AN APPARATUS FOR MANOEUVRING MINING EQUIPMENT

The present invention relates to an apparatus for manoeuvring large equipment. In particular, an apparatus that can raise and rotate mining equipment such as excavator attachments.

Equipment for use in mining operations, including excavator buckets and other attachments, is consistently exposed to forces that wear and damage the equipment. Such equipment requires regular inspection and repair to maintain optimum functionality and safety. This equipment is large, some having dimensions up to 10 metres, and heavy, some weighing in excess of 20 tonne. Accordingly, manoeuvrability of the equipment for inspection and repair is problematic. Typically, when such equipment is being inspected or repaired it is moved by attaching the equipment to the arm of an excavator machine and raising the arm. However, using an excavator machine for this purpose is counter-productive as the machine is removed from mining operations and, where extensive repairs are required, the machine can be removed from operation for significant periods of time. Alternatively, a crane can be used to lift and manoeuvre a piece of equipment, but this is dangerous as the suspended equipment is liable to move unpredictably and, for heavy equipment, the crane could break causing the equipment to fall from height. There is therefore a requirement for a dedicated apparatus for manoeuvring mining equipment for the purpose of inspection and repair.

It is an object of the invention to mitigate or obviate the problems associated with manoeuvring large equipment, including but not limited to mining equipment, for inspection and repair.

It is a further object of the invention to mitigate or obviate the problems associated with manoeuvring excavator attachments for inspection and repair.

It is a further object of the invention to improve the safety of manoeuvring mining equipment for the purpose of inspection and repair.

According to a first aspect of the invention there is provided an apparatus for manoeuvring mining equipment to enable inspection and/or repair of the mining equipment, the apparatus comprising a support means, an equipment engagement means supported by the support means, and a means for moving the equipment engagement means.

Ideally, the apparatus is adapted to be anchorable to the ground.

Ideally, the apparatus is adapted to be set in to and/or to be anchorable to a structural support arrangement thereby anchoring the apparatus. Preferably, the structural support arrangement is disposed on or within the ground. Preferably, the apparatus is adapted to be anchorable below ground and extending above the surface of the ground, or the apparatus is adapted to be anchorable on the surface of the ground.

Advantageously, the apparatus is therefore easily accessible.

In one embodiment, the apparatus is purpose built to manoeuvre large equipment such as mining equipment to enable inspection and/or repair of the equipment.

Advantageously, the apparatus typically comprises the minimum components necessary for the purpose of manoeuvring large equipment to enable inspection and/or repair of the equipment and is thereby less complex and less costly to manufacture than an excavator, which must also have a cabin, an engine and wheels or tracks for driving the excavator, for example. A purpose-built apparatus for manoeuvring mining equipment obviates the requirement to use excavators for this purpose.

Ideally, the apparatus has no independent carriage or movement means.

Ideally, the apparatus is operable to rotate a piece of equipment about two or more axes of rotation.

Advantageously, this provides greater manipulation of equipment than an apparatus that rotates a piece of equipment about a single axis only.

Preferably, the apparatus is operable to rotate a piece of equipment by at least 90°, 180° or 270° about at least one, most preferably about at least two, axes of rotation.

Ideally, the apparatus is operable to rotate a piece of equipment by 360°.

Ideally, the apparatus is operable to rotate a piece of equipment continuously clockwise or anticlockwise.

Ideally, the equipment engagement means is couplable to a piece of equipment

Preferably, the equipment engagement means is operably couplable to a piece of equipment such that forces resulting from movement of the equipment engagement means are directly transferred to the piece of equipment that is in engagement with the equipment engagement means.

Preferably, the equipment engagement means is couplable to a piece of equipment by coupling members.

Ideally, the equipment engaging means is capable of moving a piece of equipment engaged by the equipment engaging means in multiple directions and about at least one axis as a result of directly transferring movement forces to the equipment, most preferably via the coupling members.

Advantageously, an operator can manoeuvre the equipment to gain access to the equipment whilst the equipment is operably fixed to the equipment engaging means, with little or no risk of the equipment suddenly slipping or sliding or rotating as a result of the equipment’s own weight and/or momentum. This is a huge step forward from existing cranes and/or other jigs and support structures temporarily designed and erected to deal with the support and manoeuvre of heavy equipment for repair and inspection.

Ideally, the means for moving the equipment engagement means is operable to raise a piece of equipment engaged by the equipment engagement means.

Ideally, in use, the means for moving the equipment engagement means is operable to raise a piece of equipment engaged by the equipment engagement means away from the surface of the ground or lower it to the ground.

Preferably, the means for moving the equipment engagement means is operable to apply a force to the equipment engagement means.

Preferably, the means for moving the equipment engagement means is operable to apply an upward and/or downward force to the equipment engagement means.

Ideally, the means for moving the equipment engagement means is operable to control the descent of a piece of equipment in engagement with the equipment engagement means by applying an upward force that is weaker than the downward force resulting from the weight of the equipment.

In one embodiment, the apparatus is adapted to be anchorable to a vehicle and/or a moveable platform.

In one embodiment, the support means comprises a support frame means.

Ideally, the support frame means comprises an upright support frame.

Preferably, the support means is adapted to be anchorable to a surface such as the ground.

Ideally, the support means is adapted to be at least partially subterranean.

Ideally, in use, at least part of the support means is subterranean.

In one embodiment, the support means is engageable with the surrounding substrate to anchor the apparatus.

Advantageously, when at least part of the support frame means is subterranean this conceals components of the apparatus and the surrounding earth provides additional support and strength to the apparatus.

Ideally, the apparatus, most preferably the structural support arrangement, comprises a support-means casing.

Preferably, the support-means casing is adapted to be at least partially subterranean.

Ideally, the support-means casing is a cylindrical or non-cylindrical tube.

Ideally, the support-means casing is formed at least partially from steel.

Preferably, the apparatus can be installed by lowering the support-means casing into a pit and filling the pit with surrounding material, such as soil and/or concrete and compacting the material around the support-means casing, to hold the support-means casing in place. Ideally, the surrounding material is reinforced, most preferably with concrete, for stabilising the apparatus.

Preferably, the surrounding material comprises a ground-level layer of reinforcing material such as concrete.

Ideally, the means for moving the equipment engagement means comprises a means for raising or lowering the equipment engagement means.

Preferably, the means for raising or lowering the equipment engagement means is operable to extend upwardly or downwardly thereby raising or lowering the equipment engagement means.

Preferably, the means for moving the equipment engagement means is capable of axial extension.

Ideally, the means for raising or lowering the equipment engagement means is capable of axial extension.

Ideally, the means for raising or lowering the equipment engagement means comprises a moveable column.

Preferably, the moveable column is moveable in the direction of its longitudinal axis.

Alternatively, the means for raising or lowering the equipment engagement means comprises an upright structural member and a moveable member movably coupled to the upright structural member at or about an upper end of the upright structural member.

Ideally, the moveable member is pivotally coupled to the upright structural member.

Preferably, the moveable member is operably engaged with the equipment engagement means.

Ideally, the equipment engagement means can be moved by pivoting the moveable member about the upright structural support member.

Ideally, the means for moving the equipment engagement means comprises a means for rotating the equipment engagement means.

Advantageously, this increases the functionality of the apparatus and the manoeuvrability of the equipment engagement means.

Ideally, the means for rotating the equipment engagement means is operable to rotate the equipment engagement means about an upright or vertical axis and/or about a lateral or horizontal axis, and/or about an axis angled between a vertical axis and a horizontal axis.

Ideally, the means for rotating the equipment engagement means is disposed on the means for raising or lowering the equipment engagement means such that operating the means for raising or lowering the equipment engagement means results in raising/lowering the means for rotating the equipment engagement means.

Ideally, at least part of the means for rotating the equipment engagement means is located at or about the means for raising or lowering the equipment engagement means. Ideally, at least part of the means for rotating the equipment engagement means is located at or about an end of the means for raising or lowering the equipment engagement means.

In one embodiment, the means for rotating the equipment engagement means is located at or about an end of the means for raising or lowering the equipment engagement means.

Preferably, the means for raising or lowering the equipment engagement means comprises an upper end and a lower end.

Ideally, in use, the upper end is located above ground.

Preferably, at least part of the means for rotating the equipment engagement means is located at or about an end of the means for raising or lowering the equipment engagement means.

In one embodiment, the equipment engagement means is located at or about the upper end of the means for raising or lowering the equipment engagement means.

Preferably, in use, the equipment engagement means is located above ground.

Ideally, the means for rotating the equipment engagement means comprises a rotating component.

Preferably, at least part of the apparatus, most preferably at least part of the means for moving the equipment engagement means is hydraulically powered.

Ideally, the equipment engagement means is rotated via a gearbox.

Preferably, the gearbox is operably coupled between the equipment engagement means and the means for rotating the equipment engagement means.

Preferably, the gearbox is hydraulically powered.

Ideally, the gearbox is powered via a hydraulic motor.

Ideally, the hydraulic motor is operably coupled to a hydraulic circuit.

Preferably, the gearbox is a planetary gearbox such as those provided by Rexroth®.

Preferably, the gearbox comprises a series of gears that are operably engaged with and drive rotation of the rotating component.

Ideally, the series of gears comprises a final drive ratio of at least 1.0.

Ideally, the series of gears comprises a final drive ratio of at least 1.1.

Ideally, the series of gears comprises a final drive ratio of at least 1.2.

Ideally, the series of gears comprises a final drive ratio of at least 1.25.

Preferably the series of gears comprises a final drive ratio of about 1.296.

Alternatively, the means for rotating the equipment engagement means comprises a worm drive.

Ideally, the worm drive comprises a worm which, when rotated, drives a worm gear.

Preferably, the rotating component is a worm gear driveable by the worm of the worm drive.

Alternatively, the rotating component is in operable engagement with, and is driven by, the worm gear. Alternatively again, the means for rotating the equipment engagement means comprises at least one linear actuator in operable engagement with the rotating component to drive the rotating component.

Ideally, the rotating component is fixed such that it rotates about its centre and the linear actuator is pivotally fixed to the rotating component at an off-centre location on the rotating component.

Advantageously, when the linear actuator is operated it drives the rotating component about its centre point.

Ideally, the means for rotating the equipment engagement means comprises two linear actuators in operable engagement with the rotating component, the linear actuators operating in sequence to drive rotation of the rotating component.

Ideally, the one or more linear actuators are hydraulic rams.

Preferably, the rotating component is operable to rotate by at least 90°.

Ideally, the rotating component is operable to rotate by at least 180°.

Ideally, the rotating component is operable to rotate by at least 270°.

Ideally, the rotating component is operable to rotate by 360°.

Preferably, the rotating component is operable to rotate clockwise.

Ideally, the rotating component is operable to rotate anticlockwise.

Preferably, the rotating component is operable to rotate clockwise or anticlockwise continuously.

Ideally, the rotating component is in operable engagement with the equipment engagement means.

Preferably, the rotating component is a cylindrical rotating component.

Ideally, when the rotating component is in operable engagement with the equipment engagement means, the equipment engagement means rotates with the rotating component.

Preferably, the equipment engagement means is separable from the means for moving the equipment engagement means.

Advantageously, this enables alternative equipment engagement means to be used and enables maintenance and repair of the rotating component.

In one embodiment, the apparatus comprises a means for rotating the support means most preferably about a vertical or upright axis.

Preferably, the means for rotating the support means comprises a rotatable platform or rotatable support structure.

In one embodiment, the means for rotating the equipment engagement means comprises a rotating platform or rotatable support structure.

Preferably, the means for raising or lowering the equipment engagement means is mounted on the rotating platform or rotatable support structure. Ideally, operation of the rotating platform or rotatable support structure rotates the means for raising or lowering the equipment engagement means and correspondingly rotates the equipment engagement means.

Ideally, the rotating platform or rotatable support structure comprises at least one bearing.

Ideally, at least part of the means for rotating the equipment engagement means is driven by rotation of the rotating platform or rotatable support structure.

Alternatively, at least part of the means for rotating the equipment engagement means may be driven by applying a rotating force to a component part of the apparatus.

Ideally, at least part of the means for rotating the equipment engagement means may be driven by applying a rotating force to a component part of the apparatus distal to the rotating platform or rotatable support structure.

Preferably, the apparatus is powered at least partially by hydraulic power.

Ideally, the apparatus comprises at least one hydraulic circuit.

Preferably, at least part of the means for moving the equipment engagement means is hydraulically powered.

Ideally, at least part of the means for rotating the equipment engagement means is operably connected to the at least one hydraulic circuit.

Ideally, the means for moving the equipment engagement means comprises a means for connecting to a hydraulic circuit.

Preferably, the means for connecting to a hydraulic circuit is located at or about the means for raising or lowing the equipment engagement means.

Ideally, the means for connecting to a hydraulic circuit is located proximal to the equipment engagement means.

Advantageously, in use, the means for connecting to a hydraulic circuit is always located above ground.

Ideally, the means for raising or lowering the equipment engagement means is hydraulically powered.

Preferably, the means for raising or lowering the equipment engagement means is operably connected to the at least one hydraulic circuit.

Ideally, the means for moving the equipment engagement means comprises a hydraulic component.

Preferably, the hydraulic component is connected to the at least one hydraulic circuit.

Preferably, the means for raising or lowering the equipment engagement means comprises a hydraulic component.

Preferably, the hydraulic component is operably connected to the moveable column.

Ideally, the hydraulic component is located at least partially within the column. Preferably, the column is movable relative to the support frame means.

Ideally, the column is movable within the support frame means.

Preferably, the means for raising or lowering the equipment engagement means is situated at or about the support frame means.

Ideally, the hydraulic component is situated at or about the support frame means.

Ideally, the means for raising or lowering the equipment engagement means is situated at least partially within the support frame means.

Preferably, the means for raising or lowering the equipment engagement means is connected to the support frame means.

Preferably, the hydraulic component is situated within the support frame means.

Ideally, the hydraulic component is an elongate hydraulic component.

Preferably, the hydraulic component is a double-acting hydraulic component.

Preferably, the means for raising or lowering the equipment engagement means is operable to extend from the support frame means.

Ideally, the column is operable to extend from the support frame means.

Ideally, the means for raising or lowering the equipment engagement means is operable to extend by an extension of at least 5 metres, at least 10 meters, at least 15 meters.

Ideally, the means for raising or lowering the equipment engagement means is operable to extend the column from the support frame means by an extension of at least 5 metres.

Preferably, the means for raising or lowering the equipment engagement means is operable to extend the column from the support frame means by an extension of at least 10 metres.

Ideally, the means for raising or lowering the equipment engagement means is operable to extend the column from the support frame means by an extension of at least 15 metres.

Advantageously, in use, this provides sufficient clearance from the ground to enable full manoeuvrability of large mining equipment having dimensions up to 10-15 metres.

Preferably, the hydraulic component is operable to extend from the support frame means.

Ideally, the means for raising or lowering the equipment engagement means is operable to retract within the support frame means.

Ideally, the column is operable to retract within the support frame means.

Preferably, the hydraulic component is operable to retract within the support frame means.

In one embodiment, in use, when the means for raising or lowering the equipment engagement means is retracted within the support frame means, the equipment engagement means is located proximal to the surface of the ground. Preferably, in use, when the means for raising or lowering the equipment engagement means is extended from the support frame means, the equipment engagement means is located away from the surface of the ground.

Advantageously, in use, extending the means for raising or lowering the equipment engagement means can raise a piece of mining equipment from the ground wherein the piece of mining equipment is connected to the equipment engagement means. The weight of the equipment is fully supported by the apparatus and is transferred to the ground beneath the piece of equipment. This avoids using any hoists or other such means for manoeuvring the piece of equipment which are prone to breakage and can cause injury or even death in the event of a breakage.

ideally, the column is coaxial with the support frame means.

Preferably, the hydraulic component is coaxial with the support frame means.

Ideally, the means for raising or lowering the equipment engagement means comprises a safety means to limit movement of the equipment engagement means.

Preferably, the means for raising or lowering the equipment engagement means comprises a safety means to limit movement of the equipment engagement means in the event of a fault.

Ideally, the safety means comprises a check valve.

Preferably, the check valve is located on the at least one hydraulic circuit.

Preferably, the check valve is located on the hydraulic component.

Ideally, the check valve is a pilot operated check valve.

Preferably, the check valve can prevent the hydraulic component from extending and/or retracting.

Preferably, the check valve prevents the hydraulic component from extending and/or retracting in the event of a hydraulic pressure drop.

Ideally, the equipment engagement means is operably connected to the means for raising or lowering the equipment engagement means.

Preferably, the equipment engagement means comprises a means for engaging with the means for moving the equipment engagement means.

Preferably, the means for engaging with the means for moving the equipment engagement means comprises teeth or crenellations.

Ideally, the means for moving the equipment engagement means comprises teeth or crenellations.

Preferably, the teeth or crenellations of the means for engaging with the means for moving the equipment engagement means are sized to correspond with, and fit around, the teeth or crenellations of the means for moving the equipment engagement means.

Preferably, the equipment engagement means comprises a body. Ideally, the body of the equipment engagement means is an elongate body.

Preferably, the body is connectable to the means for moving the equipment engagement means.

Ideally, the body has a first end and a second end.

Preferably, the first end is longitudinally distal to the second end.

Ideally, the first end and/or second end is connectable to the means for moving the equipment engagement means.

Preferably, the first end and/or second end is connectable to a piece of equipment. Advantageously, the elongate form of the body means that, in use, the piece of equipment being held by the apparatus is located distal to the means for moving the equipment engagement means. This provides further space for manoeuvring the piece of equipment relative to the means for moving the equipment engagement means.

Ideally, the means for engaging with the means for moving the equipment engagement means are located at the first end or the second end of the equipment engagement means.

Preferably, the equipment engagement means is located at or about an end of the means for raising or lowering the equipment engagement means.

Ideally, the equipment engagement means is located at or about an end of the column. Preferably, the equipment engagement means is operable to engage with mining equipment.

Ideally, the equipment engagement means is operable to engage with an excavator attachment.

Ideally, the equipment engagement means is operable to engage with an excavator bucket.

Preferably, the equipment engagement means is operable to engage with an excavator attachment for use in mining.

Ideally, the equipment engagement means is operable to engage with an excavator bucket having a capacity of at least 2 m ³ .

Ideally, the equipment engagement means is operable to engage with an excavator bucket having a capacity of at least 5 m ³ .

Preferably, the equipment engagement means is operable to engage with an excavator bucket having a capacity of at least 10 m ³ .

Preferably, the equipment engagement means is operable to engage with an excavator bucket having a capacity of at least 15 m ³ .

Preferably, the equipment engagement means is operable to engage with an excavator bucket having a capacity of at least 20 m ³ .

Preferably, the equipment engagement means is operable to engage with an excavator bucket having a capacity of at least 25 m ³ . Preferably, the equipment engagement means is operable to engage with an excavator bucket having a capacity of at least 30 m ³ .

Preferably, the equipment engagement means is operable to engage with an excavator bucket having a capacity of at least 35 m ³ .

Preferably, the equipment engagement means is operable to engage with an excavator bucket having a capacity of at least 40 m ³ .

Preferably, the apparatus is capable of supporting loads in excess of 5 tonnes.

Preferably, the apparatus is capable of supporting loads in excess of 10 tonnes.

Ideally, the apparatus is capable of supporting loads in excess of 15 tonnes.

Preferably, the apparatus is capable of supporting loads in excess of 20 tonnes.

Ideally, the apparatus is capable of supporting loads in excess of 25 tonnes.

Preferably, the apparatus is capable of supporting loads in excess of 30 tonnes.

Ideally, the apparatus is capable of supporting loads in excess of 35 tonnes.

Preferably, the apparatus is capable of supporting loads in excess of 40 tonnes.

Ideally, the equipment engagement means is operable to engage with equipment weighing in excess of 10 tonnes.

Preferably, the equipment engagement means is operable to engage with equipment weighing in excess of 15 tonnes.

Ideally, the equipment engagement means is operable to engage with equipment weighing in excess of 20 tonnes.

Preferably, the equipment engagement means is operable to engage with equipment weighing in excess of 25 tonnes.

Ideally, the equipment engagement means is operable to engage with equipment weighing in excess of 30 tonnes.

Preferably, the equipment engagement means is operable to engage with equipment weighing in excess of 35 tonnes.

Ideally, the equipment engagement means is operable to engage with equipment weighing in excess of 40 tonnes.

Ideally, the apparatus is operable to engage with and raise and/or rotate an excavator bucket about at least one, most preferably at least two axes of rotation, having a capacity of at least 2 m ³ , at least 5 m ³ , at least 10 m ³ , at least 15 m ³ , at least 20 m ³ , at least 25 m ³ , at least 30 m ³ , at least 35 m ³ , or at least 40 m ³ .

Ideally, the apparatus is operable to engage with and raise and/or rotate an excavator bucket about at least one, most preferably at least two axes of rotation, weighing in excess of 10 tonnes, 15 tonnes, 20 tonnes, 25 tonnes, 30 tonnes, 35 tonnes or 40 tonnes.

Preferably, the apparatus is operable to engage with, raise and/or rotate an excavator bucket about at least one, most preferably at least two axes of rotation, having a capacity of at least 2 m ³ , at least 5 m ³ , at least 10 m ³ , at least 15 m ³ , at least 20 m ³ , at least 25 m ³ , at least 30 m ³ , at least 35 m ³ , or at least 40 m ³ and hold the excavator bucket in a raised and/or rotated position.

Ideally, the apparatus is operable to engage with and raise and/or rotate an excavator bucket about at least one, most preferably at least two axes of rotation, weighing in excess of 10 tonnes, 15 tonnes, 20 tonnes, 25 tonnes, 30 tonnes, 35 tonnes or 40 tonnes and hold the excavator bucket in a raised and/or rotated position.

Advantageously, an engineer can easily access all areas of an excavator bucket when the excavator bucket is connected to the to the apparatus.

Ideally, the equipment engagement means is shaped to engage with an excavator attachment.

Preferably, the equipment engagement means can be releasably coupled with a piece of equipment.

Preferably, the equipment engagement means can be releasably coupled with an excavator attachment.

Preferably, the equipment engagement means can be releasably coupled with an excavator bucket.

Ideally, the equipment engagement means comprises a means for releasably coupling the equipment engagement means to a piece of equipment.

Ideally, the means for releasably coupling the equipment engagement means to a piece of equipment is located at the first end or second end of the body of the equipment engagement means.

Preferably, the means for releasably coupling the equipment engagement means to a piece of equipment comprises coupling members.

Ideally, the coupling members comprise at least one pin.

Ideally, the means for releasably coupling the equipment engagement means to a piece of equipment comprises at least one pin for releasably coupling the equipment engagement means to an excavator attachment such as an excavator bucket.

Ideally, the means for releasably coupling the equipment engagement means to a piece of equipment comprises a closed position for engaging a piece of equipment and an open position for releasing a piece of equipment.

Ideally, the means for releasably coupling the equipment engagement means to a piece of equipment is operable to move between the closed position and the open position.

Ideally, the equipment engagement means comprises a housing for the coupling members.

Ideally, the equipment engagement means comprises a housing for the at least one pin. Preferably, in the closed position, the means for releasably coupling the equipment engagement means to a piece of equipment is in a retracted position.

Preferably, in the dosed position, the coupling members are in a retracted position.

Ideally, in the closed position, the coupling members are located within the housing.

Ideally, In the closed position, the at least one pin is located within the housing.

Ideally, in the open position, the means for releasably coupling the equipment engagement means to a piece of equipment is in an extended position.

Ideally, in the open position, the coupling members are in an extended position.

Ideally, in the open position, the coupling members are located extending from the housing.

Ideally, in the open position, the at least one pin is located extending from the housing.

Preferably, the means for releasably coupling the equipment engagement means to a piece of equipment, most preferably the coupling members, is powered.

Preferably, the means for releasably coupling the equipment engagement means to a piece of equipment, most preferably the coupling members, is hydraulically powered and/or mechanically biased.

Ideally, the at least one pin is retractable.

Preferably, the at least one pin can be retracted to disengage with a piece of equipment.

Preferably, the at least one pin is extendable.

Ideally, the at least one pin can be extended to engage with a piece of equipment.

Preferably, the means for releasably coupling the equipment engagement means to a piece of equipment comprises two pins.

Preferably, the two pins are mutually opposing.

Ideally, the two pins are coaxial.

Ideally, the two pins are proximal to one another when in a retracted position.

Ideally, the two pins move apart from one another when the means for releasably coupling the equipment is moved from the open position to the closed position.

Ideally, the two pins move apart from one another when the means for releasably coupling the equipment is moved from the retracted position to the extended position.

Ideally, the equipment engagement means comprises a coupler for an excavator attachment.

Ideally, the equipment engagement means comprises a hydraulically-powered coupler for an excavator attachment.

Preferably, the means for releasably coupling the equipment engagement means to a piece of equipment comprises a coupler for an excavator attachment.

Preferably, the means for releasably coupling the equipment engagement means to a piece of equipment comprises a hydraulically-powered coupler for an excavator attachment. Ideally, the equipment engagement means is couplable to a piece of equipment comprising a means for receiving the means for releasably coupling the equipment engagement means to the piece of equipment.

Preferably, the means for receiving the means for releasably coupling the equipment engagement means to the piece of equipment comprises at least one lug.

Preferably, the means for receiving the means for releasably coupling the equipment engagement means to the piece of equipment comprises at least one pair of spaced apart lugs.

Ideally, the at least one pair of spaced apart lugs are mutually opposing.

Preferably, the means for receiving the means for releasably coupling the equipment engagement means to the piece of equipment comprises at least one aperture.

Preferably, the at least one lug comprises at least one aperture.

Ideally, each lug comprises an aperture.

Preferably, the at least one aperture is sized to receive the coupling members.

Ideally, the at least one aperture is positioned to receive the coupling members.

Preferably, the means for receiving the means for releasably coupling the equipment engagement means to the piece of equipment comprises at least two apertures.

Preferably, the at least two apertures are mutually opposing.

Ideally, the at least two apertures are sized to receive the coupling members.

Ideally, the at least two apertures are positioned to receive the coupling members.

In one embodiment, in use, a piece of equipment coupled to the equipment engagement means is pivotable relative to the equipment engagement means.

Ideally, in use, a piece of equipment coupled to the equipment engagement means is pivotable about the pin.

Preferably, the apparatus comprises an equipment pivot means.

Ideally, in use, operation of the equipment pivot means pivots a piece of equipment relative to the equipment engagement means.

Advantageously, this enables an operator to pivot a piece of equipment that is engaged by the equipment engagement means.

Ideally, in use, operation of the equipment pivot means pivots a piece of equipment about the means for releasably coupling the equipment engagement means to a piece of equipment.

Preferably, in use, operation of the equipment pivot means pivots a piece of equipment about the pin.

In one embodiment, the equipment pivot means comprises a pivot-means hydraulic arm.

Preferably, the pivot-means hydraulic arm is connected at one end to the equipment engagement means and is connectable at the other end to a piece of equipment which is engaged with the equipment engagement means. Ideally, in use, operation of the pivot-means hydraulic arm pivots a piece of equipment relative to the equipment engagement means.

Preferably, in use, operation of the pivot-means hydraulic arm pivots a piece of equipment about the coupling members.

In an alternative embodiment, the equipment pivot means comprises an adjustable linkage.

Ideally, in use, the adjustable linkage extends from the equipment engagement means to a piece of equipment.

Preferably, in use, the adjustable linkage can be adjusted to alter the pivot angle of a piece of equipment engaged in the equipment engagement means relative to the equipment engagement means.

Preferably, in use, the adjustable linkage can be adjusted to pivot angle of piece of equipment engaged in the equipment engagement means about the coupling members.

Ideally, the equipment pivot means is couplable to a piece of equipment comprising a means for coupling to the equipment pivot means.

Preferably, the means for coupling to the equipment pivot means comprises a coupling pin.

Preferably, the means for coupling to the equipment pivot means comprises a pair of mutually opposing flanges.

Ideally, the coupling pin extends between the pair of mutually opposing flanges.

Ideally, the coupling pin is separable form the pair of mutually opposing flanges.

Preferably, the coupling pin being operable to engage with the equipment pivot means.

Ideally, the coupling pin being operable to engage with the pivot-means hydraulic arm.

Preferably, the coupling pin being operable to engage with the adjustable linkage.

Preferably, in use, the equipment can be coupled to the apparatus by the means for receiving the means for releasably coupling the equipment engagement means to the piece of equipment to enable upward, downward and rotational movements.

Preferably, in use, the equipment can be coupled to the apparatus by the means for receiving the means for releasably coupling the equipment engagement means to the piece of equipment to enable upward, downward and rotational movements and by the means for coupling to the equipment pivot means to enable pivotable movement.

Preferably, in use, the equipment can be coupled to the apparatus by the means for receiving the means for releasably coupling the equipment engagement means to the piece of equipment to enable upward, downward and rotational movements and by the means for coupling to the equipment pivot means to enable pivotable movement about the coupling members.

In one embodiment, the equipment engagement means comprises a lock for locking an excavator attachment on the equipment engagement means. Preferably, the at least one hydraulic circuit is operable to power the means for moving the equipment engagement means.

Ideally, the at least one hydraulic circuit is operable to power the means for raising or lowering the equipment engagement means.

Preferably, the at least one hydraulic circuit is operable to power the means for rotating the equipment engagement means.

Ideally, the apparatus comprises a brake means for preventing movement of the equipment engagement means.

Advantageously, the brake means can hold the equipment engagement means in a desired position relative to the support means.

Preferably, the brake means is operable to prevent movement of the means for moving the equipment engagement means.

Ideally, the brake means is operable to prevent movement of the means for rotating the equipment engagement means.

Ideally, the brake means comprises at least one brake disc.

Ideally, the brake means comprises a plurality of brake discs.

Ideally, the brake means comprises at least one multi-disc hydraulic brake.

Preferably, the brake means comprises a plurality of multi-disc hydraulic brakes.

Ideally, the brake means comprises two multi-disc hydraulic brakes.

Preferably, at least part of the brake means is positioned proximal to the rotating component, the rotating platform and/or the rotatable support structure.

Ideally, the at least one brake disc is positioned proximal to the rotating component, the rotating platform and/or the rotatable support structure.

Ideally, the at least one brake disc is operable to slow and/or prevent movement of the rotating component, the rotating platform and/or the rotatable support structure.

Preferably, the brake means comprises a biasing means for biasing the at least one brake disc in a braking position.

Ideally, the biasing means comprises a spring.

Ideally, the brake means comprises a means for moving the at least one brake disc away from the braking position.

Ideally, the means for moving the at least one brake disc away from the braking position comprises at least one hydraulic brake arm.

Preferably, the means for moving the at least one brake disc away from the braking position comprises a plurality of hydraulic brake arms.

In one embodiment, the brake means is operable to prevent movement of the means for raising or lowering the equipment engagement means.

Preferably, the apparatus comprises a control means. Ideally, the control means is operable to control the hydraulic circuit.

Preferably, the control means is operable to control the means for moving the equipment engagement means.

Ideally, the control means is operable to control the means for raising or lowering the equipment engagement means.

Preferably, the control means is operable to control the means for rotating the equipment engagement means.

Ideally, the control means is operable to control the brake means.

Preferably, the control means is operable to control the rotating component, rotatable platform and/or rotatable support structure.

In one embodiment, the control means comprises at least one hydraulic lever.

Ideally, the at least one hydraulic lever is connected to the at least one hydraulic circuit. Preferably, the control means comprises a plurality of hydraulic levers.

Ideally, the control means comprises three hydraulic levers.

Ideally, the control means comprises at least one control valve.

Ideally, the control means comprises at least one double-acting spool.

Preferably, the control means comprises a spool valve bank.

Ideally, the control means comprises a three-spool valve bank.

Advantageously, this provides six operational modes.

In another embodiment, the control means comprises at least one switch.

In yet another embodiment, the control means comprises a user interface

Ideally, the control means comprises a central processing unit.

Preferably, the control means comprises a means for storing memory.

Ideally, the control means comprises a display.

Ideally, the support frame means comprises a support frame base.

Ideally, the support frame means comprises a top member.

Preferably, the support frame means comprises at least one elongate support member. Ideally, the at least one elongate support member extend between the support frame base and top member.

Preferably, the support frame means comprises a plurality of elongate support members. Ideally, the support frame means comprises four elongate support members.

Ideally, the plurality of elongate support members are arranged spaced apart from one another.

Preferably, the plurality of elongate support members are arranged parallel to one another.

Ideally, the plurality of elongate support members extend between the support frame base and top member. Ideally, the plurality of elongate support members are connected by a plurality of joining members.

Advantageously, this provides additional structural strength to the support frame means. Ideally, the joining members extending between the plurality of elongate support members.

Preferably, at least one of the joining members is arranged diagonally.

Ideally, the plurality of joining members are arranged diagonally.

Alternatively, at least one of the joining members is arranged laterally.

Ideally, the plurality of joining member are arranged laterally.

Alternatively again, at least one of the joining members is arranged diagonally and at least one of the other joining members is arranged laterally.

Ideally, the support frame means having a length of at least 10 metres.

Preferably, the support frame means having a length of at least 15 metres.

Ideally, the support frame means having a length of at least 20 metres.

Preferably, in use, the surrounding terrain provides support to the support frame means. Ideally, in use, the surrounding terrain compacts around the support frame means to provide support.

In one embodiment, the support frame means comprises a grip means for gripping surrounding terrain.

Advantageously, the provides additional structural support.

Ideally, the grip means comprises at least one grip member.

Ideally, the grip means comprises a plurality of grip members.

Preferably, the grip means is located one on or more sides of the support frame means. Ideally, the grip means is located on two sides of the support frame means.

Preferably, the at least one grip member comprises a protrusion.

Ideally, the at least one grip member comprises a lateral protrusion.

Ideally, the at least one grip member is formed with the support frame means.

Ideally, the support frame means comprises steel.

Preferably, in use, at least 50% of the support frame means is subterranean.

Ideally, in use, at least 75% of the support frame means is subterranean.

Preferably, in use, at least 95% of the support frame means is subterranean.

Advantageously, this provides optimal concealment and support.

Ideally, the support frame means comprises an upper support-frame end and a lower support-frame end.

Preferably, in use, the upper support-frame end is flush or near-flush with the surface of the ground.

In an alternative embodiment, the support means comprises a support base. Ideally, the support base is a platform.

Preferably, the support base is a raised platform.

Ideally, the means for moving the equipment engagement means is at least partially anchored within the support base.

Ideally, the means for moving the equipment engagement means is at least partially anchored within the platform.

Preferably, the support base is formed from concrete or other composite material.

According to a second aspect of the invention there is a provided an equipment engagement means for use with an apparatus for manoeuvring large equipment, the equipment engagement means comprising a means for engaging with a means for moving the equipment engagement means.

Ideally, the means for engaging with a means for moving the equipment engagement means comprises a lock.

Preferably, the means for engaging with a means for moving the equipment engagement means comprises teeth or crenellations.

Ideally, the means for engaging with a means for moving the equipment engagement means is operable to engage with a rotating component.

In another embodiment, the means for engaging with a means for moving the equipment engagement means is operable to engage with a means for raising or lowering the equipment engagement means.

According to a third aspect of the invention there is provided a method of inspecting and/or repairing large equipment, the method comprising using an apparatus for manoeuvring large equipment to enable inspection and/or repair of the large equipment, the apparatus comprising a support means, an equipment engagement means and a means for moving the equipment engagement means, wherein the means for moving the equipment engagement means is supported by the support means, the method comprising the step of attaching a piece of equipment to the apparatus.

Preferably, the apparatus is anchored on or within and extending out of a surface, such as the ground.

Ideally, the method comprises the step of locating a piece of equipment proximal to the equipment engagement means such that it can be engaged by the equipment engagement means.

Preferably, the method comprises opening the means for releasably coupling the equipment engagement means to a piece of equipment.

Preferably, the method comprises opening the at least one pin. Ideally, the method comprises locating the piece of equipment within the equipment engagement means such that the means for releasably coupling the equipment engagement means to a piece of equipment can engage the equipment.

Ideally, the method comprises closing the means for releasably coupling the equipment engagement means to a piece of equipment.

Preferably, the method comprises operating the control means.

Ideally, the method comprises operating the means for moving the equipment engagement means.

Preferably, the method comprises operating the means for raising or lowering the equipment engagement means.

Preferably, the method comprises operating the means for raising or lowering the equipment engagement means to raise the equipment away from the surface of the ground.

Ideally, the method comprises inspecting and/or repairing the underside of the equipment when the equipment is in a raised position

Ideally, the method comprises operating the means for rotating the equipment engagement means.

Ideally, the method comprises operating the means for rotating the equipment engagement means to rotate the equipment.

Ideally, the method comprises operating the means for rotating the equipment engagement means to rotate the equipment about an upright or vertical axis, a lateral or horizontal axis, and/or an axis angled between a vertical and horizontal axis.

Preferably, the method comprises inspecting the equipment as it is rotated.

Ideally, the method comprises operating the brake means.

Ideally, the method comprises inspecting and/or repairing the equipment when the equipment is in a rotated position.

Preferably, the method comprises operating the means for raising or lowering the equipment engagement means to lower the equipment.

Preferably, the method comprises operating the means for raising or lowering the equipment engagement means to lower the equipment following inspection and/or repair.

Preferably, the method comprises operating the means for raising or lowering the equipment engagement means to lower the equipment to the ground.

ideally, the method comprises opening the pin.

Preferably, the method comprises inspecting and/or repairing equipment weighing in excess of 10 tonnes.

Preferably, the method comprises inspecting and/or repairing equipment weighing in excess of 15 tonnes. Preferably, the method comprises inspecting and/or repairing equipment weighing in excess of 20 tonnes.

Preferably, the method comprises inspecting and/or repairing equipment weighing in excess of 25 tonnes.

Preferably, the method comprises inspecting and/or repairing equipment weighing in excess of 30 tonnes.

Preferably, the method comprises inspecting and/or repairing equipment weighing in excess of 35 tonnes.

Preferably, the method comprises inspecting and/or repairing equipment weighing in excess of 40 tonnes.

Ideally, the method comprises inspecting and/or repairing an excavator bucket with a capacity of at least 2 m ³ .

Ideally, the method comprises inspecting and/or repairing an excavator bucket with a capacity of at least 5 m ³ .

Ideally, the method comprises inspecting and/or repairing an excavator bucket with a capacity of at least 10 m ³ .

Ideally, the method comprises inspecting and/or repairing an excavator bucket with a capacity of at least 15 m ³ .

Ideally, the method comprises inspecting and/or repairing an excavator bucket with a capacity of at least 20 m ³ .

Ideally, the method comprises inspecting and/or repairing an excavator bucket with a capacity of at least 25 m ³ .

Ideally, the method comprises inspecting and/or repairing an excavator bucket with a capacity of at least 30 m ³ .

Ideally, the method comprises inspecting and/or repairing an excavator bucket with a capacity of at least 35 m ³ .

Ideally, the method comprises inspecting and/or repairing an excavator bucket with a capacity of at least 40 m ³ .

It will be appreciated that optional features applicable to one aspect of the invention can be used in any combination, and in any number. Moreover, they can also be used with any of the other aspects of the invention in any combination and in any number. This includes, but is not limited to, the dependent claims from any claim is used as dependent claims for any other claim in the claims of this application.

The invention will now be described with reference to the accompanying drawings which shows by way of example only three embodiments of an apparatus in accordance with the invention. Figure 1 is a side elevation view of an apparatus according to the invention in use, the surface of the ground is illustrated at the top of the upright support frame, the movable column is extended from the upright support frame.

Figure 2 is a side elevation view of the apparatus in Figure 1 , the column is retracted within the upright support frame.

Figure 3 is a side elevation view of an equipment engagement arrangement according to the invention in engagement with an excavator bucket.

Figure 4 is an alternative side elevation view of the equipment engagement arrangement in Figure 3.

Figure 5 is a front perspective view of the equipment engagement arrangement shown in Figure 3.

Figure 6 is a side elevation view of an upright support frame and an arrangement for rotating the equipment engagement arrangement.

Figure 7 is an alternative side elevation view of the upright support frame and arrangement for rotating the equipment engagement arrangement shown in Figure 6.

Figure 8 is a rear elevation view of a second embodiment of an apparatus according to the invention wherein the arrangement for rotating the equipment engagement arrangement is rotated by 90° relative to the upright support frame when compared with the apparatus in Figures 6 and 7.

Figure 9 is a perspective view of a worm gear.

Figure 10 is a top view of a schematic of an alternative rotating mechanism.

Figure 1 1 is a front view of the rotating mechanism of Figure 10.

Figure 12 is a side view of a schematic of a third embodiment according to the invention.

Figure 13 is a cross sectional, top view of a schematic of an equipment engagement arrangement according to the invention in a first configuration.

Figure 14 is the equipment engagement arrangement of Figure 13 in a second configuration.

Figure 15 is a perspective view of a steel casing for a support arrangement.

In Figures 1 to 7 there is shown an apparatus for manoeuvring mining equipment indicated generally by reference numeral 1. The apparatus 1 enables inspection and repair of large mining equipment and excavator attachments. The apparatus 1 can engage with mining equipment, vertically raise the equipment and rotate the equipment. The apparatus 1 has an upright support frame 2, an equipment engagement arrangement 3, and an arrangement 4 for moving the equipment engagement arrangement 3, The equipment engagement arrangement 3 and the arrangement 4 for moving the equipment engagement arrangement 3 is supported by the support frame 2. The apparatus 1 is adapted to be anchored to a surface as shown in Figure 1 wherein the surface is indicated by reference numeral 5. The support frame 2 has a length of 10 metres; in use, over 95% of the support frame 2 is located below the surface of the ground as shown in Figure 1. The apparatus 1 can be installed by first lowering a structural support arrangement, such as a steel casing 80 as shown in Figure 15 into a pit, compacting soil or other material around the casing and casting the casing in to a top layer, approximately 300 m thick, of concrete. The surrounding earth and concrete compacts around the casing and provides additional structural strength. The support frame 2 is then lowered into the casing. The support frame 2 has a squared support frame base 8, a squared top member 7 which, in use, is flush with the surface of the surrounding ground as shown in Figure 1. The support frame 2 further has four elongate support members 8a, 8b, 8c, 8d extending from each corner of the support frame base 6 to the top member 7 in a parallel, spaced apart relation.

The elongate support members 8a, 8b, 8c, 8d are further connected to each other by a first series of diagonal joining members 10a connecting elongate support member 8a to elongate support member 8b and a second series of diagonal support members 10b connecting elongate support member 8c to elongate support member 8d. The elongate support members 8a, 8b, 8c, 8d are further connected to each other by a first series of lateral joining members 11 a connecting elongate support member 8a to elongate support member 8d and a second series of lateral support members 11 b connecting elongate support member 8b to elongate support member 8c.

The arrangement 4 for moving the equipment engagement arrangement 3 has an arrangement 12 for raising or lowering the equipment engagement arrangement 3. The arrangement 12 for raising or lowering the equipment engagement arrangement 3 has a column 13 which is moveable through operation of a double-acting hydraulic cylinder 14. The apparatus

1 is powered by a hydraulic circuit (not shown) and the arrangement 4 for moving the equipment engagement arrangement 3 has a series of ports 15 for connecting to a hydraulic circuit and enabling hydraulic operation of the apparatus 1. The double-acting hydraulic cylinder 14 is located within the column 13 and is fixed at an upper end to the column 13 and at a lower end to the support frame base 6 of the support frame 2. The column 13 is located within the support frame 2. The double-acting hydraulic cylinder 14, the column 13 and the support frame 2 are co-axial. The double-acting hydraulic cylinder 14 and the column 13 are movable within the support frame

2 and can extend from the support frame 2. The double-acting hydraulic cylinder 14 is connected to the column 13 and when the double-acting hydraulic cylinder 14 is extended it engages with the column 13 and raises it up through the support frame 2.

The arrangement 12 for raising or lowering the equipment engagement arrangement 3 is operable to extend the column 13 from the support frame 2 by an extension of 10 metres. When the column 13 is in an extended position, the double-acting hydraulic cylinder 14 can be operated to retract the column 13 into the support frame 2 to locate the equipment engagement arrangement 3 proximal to the ground. The arrangement 12 for raising or lowering the equipment engagement arrangement 3 further has a check valve (not shown) located on the double-acting hydraulic cylinder 14. The check valve prevents the double-acting hydraulic cylinder 14 from extending or retracting in the event of a hydraulic pressure drop.

The equipment engagement arrangement 3 is operably connected to the arrangement 12 for raising or lowering the equipment engagement arrangement 3 and is located at the upper end of the column 13. The arrangement 4 for moving the equipment engagement arrangement 3 has an arrangement 16 for rotating the equipment engagement arrangement 3. The arrangement 16 for rotating the equipment engagement arrangement 3 is located at the upper end of the column 13 and is connected to the column 13. The arrangement 16 for rotating the equipment engagement arrangement 3 has a cylindrical, hydraulically-powered rotating component 17 which is connected to the hydraulic circuit via the ports 15. The arrangement 16 for rotating the equipment engagement arrangement 3 has a hydraulically driven planetary gearbox (not shown) with a final drive ratio of about 1.296 and is operable to rotate by 360°. Alternatively, the rotating component 17 may be driven by a worm drive as indicated generally by reference numeral 216 in Figure 9. The worm drive 216 has a linear worm 230 which is engaged with a worm gear 231. When the worm 230 is rotated about its axis it drives rotation of the worm gear 231. In one arrangement (not shown), the worm drive 216 can be operably engaged with the rotating component 17 to drive rotation of the rotating component. Yet another arrangement 316 shown in Figures 10 and 1 1 for rotating the equipment engagement arrangement 3 is provided by two hydraulic rams 340a, 340b connected to the face of a driven wheel 341 which is in turn connected/connectable via a drive shaft 342 to the rotating component 17. The rams 340a, 340b are on mutually opposing sides of the wheel 341 but each extend across the face of the wheel 341 to a shared pivotal fixing point 343. The driven wheel 341 is fixed about a central axis and as one ram 340a extends, the other ram 340b retracts and vice versa, and this sequenced operation controls rotation of the rotating component 17. The rams 340a, 340b are controlled by encoders (not shown) and sequencing valves (not shown). The rams 340a 340b can thereby drive the rotating component through 360° and in either clockwise or anticlockwise direction. The rotating component 17 is in operable engagement with the equipment engagement arrangement 3 and when the rotating component 17 is rotated the equipment engagement arrangement 3 correspondingly rotates.

The equipment engagement arrangement 3 is operable to engage with mining equipment, such as an excavator bucket, as shown in Figures 1 to 5. The equipment engagement arrangement 3 is operable to engage with a range of excavator attachments, for example, an excavator bucket with a capacity of 17 m ³ and weighing 20 tonnes, or an excavator bucket with a capacity of 40 m ³ and weighing 40 tonnes. The equipment engagement arrangement 3 is shaped to engage with and be releasably coupled with an excavator bucket. The equipment engagement arrangement 3 is conical in shape, with the support frame base engaging with the rotating component 17, narrowing to the point of attachment to a piece of mining equipment. The equipment engagement arrangement 3 has a series of teeth 21 that engage with a corresponding series of teeth 22 on the rotating component 17 being the gearbox, and a lock 70 for locking the equipment engagement arrangement 3 to the rotating component 17 The equipment engagement arrangement 3 has an elongate body 23, and the teeth 21 are located at one end of the elongate body 23 The equipment engagement arrangement 3 has two mutually opposing pins 18a, 18b located at the opposing end that is engaged with the rotating component 17, and at the opposing end of the elongate body 23 from the teeth 21. The two mutually opposing pins 18a, 18b are longitudinally mutually opposing and are extendable and retractable via hydraulic power. The pins 18a, 18b are operated to releasably couple the equipment engagement arrangement 3 to a piece of mining equipment, such as an excavator bucket, as shown in Figures 1 to 5 The pins 18a, 18b can retract within the equipment engagement arrangement 3, as shown in Figure 13, to release a piece of equipment that is held by the equipment engagement arrangement 3 and can extend from the equipment engagement arrangement 3, as shown in Figure 14, to engage with a piece of equipment. A piece of equipment that is coupled via the pins 18a, 18b to the apparatus is pivotable about the pin and the equipment can be manually pivoted.

The apparatus 1 has a brake arrangement for preventing movement of the equipment engagement arrangement 3. The brake arrangement involves two multi-disc hydraulic brakes located proximal to the rotating component 17 which are operable to slow and prevent movement of the rotating component 17. The multi-disc hydraulic brakes are spring operated and hydraulically released. The apparatus 1 further has a control arrangement (not shown) involving a three-spool valve bank with double-acting spools, providing six operational moves for raising, lowering and rotating the equipment engagement arrangement 3.

In use, as shown in Figures 1 to 5, a piece of mining equipment such as an excavator bucket 20, which has a capacity of 17 m ³ and weighs in excess of 20 tonnes, is first set at a location where it can be engaged by the equipment engagement arrangement 3. The control arrangement is operated, if required, to open the pins 18a, 18b and move them to a retracted position where they are housed within the equipment engagement arrangement 3. The equipment engagement arrangement 3 is lowered into position proximal to the apertures 21 a, 21 b of the excavator bucket 20. The control arrangement is again operated to cause the pins 18a, 18b to extend through the apertures 21 a, 21 b thereby engaging the excavator bucket 20. The arrangement 12 for raising or lowering the equipment engagement arrangement 3 is then operated to raise the excavator bucket 20 away from the ground 5. This enables inspection and repair of the underside of the excavator bucket 20. The arrangement 16 for rotating the equipment engagement arrangement 3, being the planetary gearbox, worm drive 216, or alternative rotating arrangement 316, is then operated to rotate the equipment engagement arrangement 3 and the excavator bucket 20, enabling a full 360° inspection of the excavator bucket 20. The brake arrangement can be operated to halt rotation of the excavator bucket 20 and hold the excavator bucket 20 in a position for a prolonged period of time to enable extensive repairs to be carried out. When inspection and repair is complete the arrangement 4 for moving the equipment engagement arrangement 3 can be operated to return the excavator bucket 20 to the ground 5. The pins 18a, 18b are then operated to move from the closed position to the open position and to release the excavator bucket 20. The arrangement 4 for moving the equipment engagement arrangement 3 is then operated again to move the equipment engagement arrangement 3 out of the way of the excavator bucket 20. A machine can then attach to the excavator bucket 20 and continue mining operations.

In the embodiment shown in Figure 8 there is an apparatus for manoeuvring mining equipment indicated generally by reference numeral 101 having a support frame 102 and an arrangement 1 16 for rotating an equipment engagement arrangement. The arrangement 1 16 for rotating an equipment engagement arrangement is rotated by 90° relative to the support frame when compared with the embodiment of the invention illustrated in Figures 6 and 7.

Various modifications will be apparent to those skilled in the art. For example, a pivot arrangement could be included to pivot a piece of equipment that is engaged by the equipment engagement arrangement 3 relative to the equipment engagement arrangement 3. The pivot arrangement may include a hydraulic arm that is connected at one end to the equipment engagement arrangement 3 and is connectable at the other end to a coupling pin 22 of a piece of equipment which is engaged with the equipment engagement arrangement 3. Operation of the hydraulic arm would cause the equipment engagement arrangement 3 to pivot about the pins 18a, 18b. Alternatively, an adjustable linkage extending from the from the equipment engagement arrangement 3 to a coupling pin 22 a piece of equipment in engagement with the equipment engagement arrangement 3 could be adjusted to alter the angle of pivot of the equipment relative to the equipment engagement arrangement 3. In a further variation the equipment engagement arrangement 3 could have a lock for locking pivotable movement of a piece of equipment in engagement with the equipment engagement arrangement 3 about the pins 18a, 18b. In a further variation the control arrangement could have a series of switches or a computer user interface to operate the apparatus 1. In a further variation, the column 13 is rotatable relative to the support frame 2. This could be done by installing a bearing at the support frame base of the column 13 and rotating the column 13 about the bearing using a gear system or other means for applying a rotating force to the column 13.

An alternative, above-ground apparatus is illustrated in Figure 12 and indicated generally by reference numeral 401. The apparatus 401 has an equipment engagement arrangement 403 that is connected to a moveable member 450 that is in turn pivotally connected to an upright structural support member 451. A hydraulic ram 452 extends from the upright structural support member 451 to the moveable member 450 and when the ram 452 extends the moveable member 450 pivots about the upright structural support member 451 and it raises the equipment engagement arrangement 403 away from the surface. When the ram 452 retracts, the equipment engagement arrangement 403 is lowered to the surface. The upright structural support member 451 is disposed on a rotating platform 453 for improved manoeuvrability of the equipment engagement arrangement 403.

In relation to the detailed description of the different embodiments of the invention, it will be understood that one or more technical features of one embodiment can be used in combination with one or more technical features of any other embodiment where the transferred use of the one or more technical features would be immediately apparent to a person of ordinary skill in the art to carry out a similar function in a similar way on the other embodiment.

In the preceding discussion of the invention, unless stated to the contrary, the disclosure of alternative values for the upper or lower limit of the permitted range of a parameter, coupled with an indication that one of the values is more highly preferred than the other, is to be construed as an implied statement that each intermediate value of the parameter, lying between the more preferred and the less preferred of the alternatives, is itself preferred to the less preferred value and also to each value lying between the less preferred value and the intermediate value.

The features disclosed in the foregoing description or the following drawings, expressed in their specific forms or in terms of a means for performing a disclosed function, or a method or a process of attaining the disclosed result, as appropriate, may separately, or in any combination of such features be utilised for realising the invention in diverse forms thereof as defined in the appended claims.