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JP2833864B2 |
PCT No. PCT/GB93/02499 Sec. 371 Date Aug. 9, 1995 Sec. 102(e) Date Aug. 9, 1995 PCT Filed Dec. 3, 1993 PCT Pub. No. WO94/13926 PCT Pub. Date Jun. 23, 1994A mole launcher which has a hydraulically powered, double-acting piston and cylinde...
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To make it possible to control operation mechanism of a drill in succession. A drill controlling device is equipped with a detection device 18 for detecting an operation condition of an operation mechanism in a drill mounted on a guide s...
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To perform an efficient work even in a work wherein an excavation depth and a press-fit length of a pile are different. A leader is constituted to be expandable through a base part leader 4a and a tip leader 4b and expansion and contract...
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To improve the execution by expanding/contracting a leader in the vertical direction through a wire rope. An expandable leader comprises a base leader 4a, and a tip leader which is slidably provided with a fitting bracket 6 for an auger-...
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To miniaturize a mast supporter, and to improve safety by installing a sliding base to an upper machine body in a freely horizontally movable manner, rotatably supporting a swivel base to the sliding base and supporting a mast to the swi...
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To set a boring machine in a prescribed boring position in a short time and easily and safely by mounting the boring machine on a wheeled carriage, and supporting and controlling the boring machine in a manner that allows the change of t...
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JPH10205269A |
To simplify boring work on slope. A slope boring system is constituted of a drill 1, a rail 2 slid by mounting the drill 1 and a cable crane.
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To accurately detect that a suspended excavator has reaches the bottom of an objective hole to be excavated for a hole excavator with the handing up and down of the excavator. A moving sieve 11 is interlocked with a second excavator, and...
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JP2767228B2 |
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JPH10148089A |
To acquire a method of construction, in which a shaft can be excavated safely and efficiently. A drilling device 1 with a rotary table 15 capable of being rotated in a horizontal plane, a plurality of legs 5 lifting and bearing the rotar...
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To install and hold a body horizontally on a slope or a ground surface with irregularities simply and accurately. The horizontal bearing device has a base frame 2, on which a body is placed, a plurality of legs 5 being downwards mounted ...
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To prevent break of a rack tooth in a lifting drive device of a rack chain system by a method wherein a rack for engagement with chain is formed so that the ridge of a tooth of rack outside a reference pitch line is formed into a square ...
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JPH10140963A |
To prevent a gap from arising in the connection part of racks. Divided racks 8a, 8b are arranged on a leader, in this connection device of the racks. A connecting rack member 13 is put between the mutual divided ends of respective racks ...
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JPH10140964A |
To provide a leader which can instantaneously cope with the variation of a limited height in an excavating site. A leader 4 is held in this excavating equipment body 1 and a lifter 5 for excavation is supported to be vertically movable. ...
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To prevent a leader from moving up and down during the rotation of a bit in a ground improving machine in which a bit fixedly atttached to a rod. In the leader luffing device of a ground improving machine, an open/closure valve 33 is pro...
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To enable an operator to easily recognize the drilling work situation at the face and correct the drilling at early time in the case of shifting of the drilling position. This device has a detector detecting the motion of joint part of a...
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To make it possible to widen a preferable range in the case when a perforating apparatus is mounted on a construction vehicle, such as a hydraulic shovel. A top bracket 11 is turnable supported on the tip of an arm 1 of a hydraulic shove...
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