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JP07189576 |
PURPOSE: To eliminate wears of a rod groove part and a rod chucking mechanism by rotating in a single piece the output shaft transmitting a torque to rod and the rod chucking mechanism. CONSTITUTION: When the cylinder 18 of a unchucking ...
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JP07189577 |
PURPOSE: To decelerate the rotation of a motor step by step to lead to its stopping finally by feeding a rotational angle position signal from a screw joint part to a programmable controller. CONSTITUTION: A disc brake 10 is coupled with...
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JP07180460 |
PURPOSE: To reduce the abrasion and breakage of a bit and efficiently do a casing excavation by controlling the pressing force applied to a casing head in a casing excavator. CONSTITUTION: An oil path (e) is branched between the expansio...
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JP07150566 |
PURPOSE: To form a large diameter pile hole without applying an excessive load to an auger motor while using conventional small diameter excavating rods and screws by rotating a main shaft and a sub-shaft by a main driving motor, and rot...
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JP07133614 |
PURPOSE: To make the effective length of an excavating shaft longer, and enhance a working efficiency by forming the excavating shaft slidably supported on a leader out of mutiple hollow pipes, letting power for an supported excavating m...
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JP07119377 |
PURPOSE: To promote efficiency by providing a rising and falling slide plate to a tower-like body formed of a fixed frame and a rod, tuning an excavation pipe loaded thereto to excavate and, at the same time, providing an additional exca...
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JP07076984 |
PURPOSE: To improve working efficiency by gearing two two-speed type hydraulic motors with a ring gear for driving an auger screw, and regulating the feed quantity of pressure oil to each hydraulic motor to switch it to three high, middl...
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JP07071181 |
PURPOSE: To facilitate processing, suppress wear, and prolong lifetime by fitting a head system to be provided on a boring rod in a head sleeve to hold a bit with the aid of a key or spline, and restraining the idle rotation. CONSTITUTIO...
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JP07042150 |
PURPOSE: To provide the driving device and driving method of a steel pipe used for earth retaining or as a stud pipe of an anchor, which is easy to carry into a site in particular, can be assembled, disassembled, and self-erected, can dr...
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JP07026864 |
PURPOSE: To perform high-efficient discharge of soil by means of comparatively low pressure feed water. CONSTITUTION: An excavating pipe 2 is coupled to a connection pipe 3 to form a spindle. A plurality of excavating bits are arranged a...
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JP07026865 |
PURPOSE: To improve excavating workability by generating a rotation force and thrust by means of one and the same device. CONSTITUTION: When a drive ring 5 is rotated counterclockwise, a driven gear 7 geared with a ring gear 6 is rotated...
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JP07026874 |
PURPOSE: To perform automatic lowering of an excavating means according to excavation during an excavating work. CONSTITUTION: An excavating device 30 is held in a state to be vertically suspended by means of a wire 12 delivered from a w...
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JP07018965 |
PURPOSE: To improve the general-purpose properties of drain construction by installing the bits of half bodies divided-into two in the vertical direction at the front end of a cylindrical section body having a spiral fin on an outer circ...
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JP06336889 |
PURPOSE: To surely perform a chucking action by rotating a chuck body at a large stroke into uniform contact with the outer periphery of a rotary shaft without enlarging a chuck mechanism. CONSTITUTION: A static chuck mechanism 13 is sup...
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JP06323077 |
PURPOSE: To make possible continuous operation of excavating work by installing a vertically movable sliding plate between upper and lower fixing frame bodies, excavating by inserting an excavating pipe in this, and arranging a pipe repl...
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JP06294271 |
PURPOSE: To make it easy to reduce the diameter of a wing pit so as to prevent clogging with sludge by projecting the end portion of the wing bit inwards to form projecting portions that overlap each other when the diameter of the bit is...
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JP06257363 |
PURPOSE: To prevent dispersion of moved earth drilled by means of a drilling device, and improve the strength of drilling members. CONSTITUTION: A cylindrical member 20 covering the outer circumference of the upper part of a casing 6 con...
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JP06229182 |
PURPOSE: To construct a shaft having a large diameter accurately while also reducing an outbreak by small energy by inserting a hollow guide pipe into a pilot hole having a small diameter and pushing down the hollow guide pipe while rota...
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JP06229183 |
PURPOSE: To cope with a plurality of methods of construction by the same device by juxtaposing a planet gear row to the rotary driving device of a casing tube and installing a kelly-bar and a torque transmission gear, which can be engage...
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JP06200690 |
PURPOSE: To promote the removal of each section of a pipe once drilling is completed. CONSTITUTION: Using slides 18 and 20 being mounted to a saver-sub 16 of a drill unit 12, a drill pipe 14 is locked so that it can be rotated along with...
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JP06173565 |
PURPOSE: To decrease the number of extension, and to improve workability by installing driving gears simultaneously giving revolving torque and thrust to the lower sections of a pair of posts disposed in upright into the working tunnel o...
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JP06158968 |
PURPOSE: To avoid the defect of possibility that turning moment is increased suddenly by the sudden lowering of the number of revolution of a drill and the gluing of the drill when the drill collides with a resistor in a bored hole, and ...
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JP06146762 |
PURPOSE: To easily drill a large-sized shaft with an excavation service arm by drilling the shaft after having discharged water collected in a guide hole and discharging excavated earth and sand with a bucket without using water required...
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JP06146254 |
PURPOSE: To embody such a conception that sampling is made while a condition of the foundation is confirmed, for a normal boring machine in a dry foundation boring process, and to carry out efficient penetration of pressure air mixed cem...
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JP06137056 |
PURPOSE: To make it possible to form an excavated hole whose cylinder-shaped surface is uneven by installing a large excavation blade directly connected to the main shaft of an excavation machine and a support mechanism which incorporate...
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JP06041959 |
PURPOSE: To improve withdrawing efficiency by fittedly inserting the tip of a screw blade attached to the tip of an auger shaft into the hollow hole of a concrete pile, and rotating and lowering it, and applying centrifugal pressing forc...
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JP06033463 |
PURPOSE: To form a continuous wall having excellent linearity by installing a guide shaft to one side on a line of an excavator provided with a plurality of excavation shafts whose shaft core is laid out on the line. CONSTITUTION: A plur...
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JP06026066 |
PURPOSE: To prevent a bucket from being damaged due to erroneous setting of an excavating torque in an earth drill. CONSTITUTION: An excavating torque change-over device comprises a computing device 25 for selecting one of bucket torques...
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JP05321554 |
PURPOSE: To make a straight horizontal hole in orderly manner by deviating to center of a drilling bit from the center of a sleeve pipe and rotating a rotary shaft supported rotatively in the sleeve pipe and shielding forward. CONSTITUTI...
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JP05321569 |
PURPOSE: To make it possible to promote reliability of a boring machine, to enable the replacing of a dust seal and to make it possible to easily change the existing boring machine into a waterproof one. CONSTITUTION: The rear end of a h...
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JP05287975 |
PURPOSE: To simplify the equipment and increase the workability, by forcing the joint of a kelly rod sub and a hammer and also the joint of a kelly rod sub and a kelly rod to face to each other. CONSTITUTION: Female joints 149, 149 are f...
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JP05280033 |
PURPOSE: To place a screen pipe having a high degree of water correcting efficiency simultaneously with drilling in a screen pipe placing process. CONSTITUTION: A rotary percussion drill 2 in a device for placing a screen pipe 6 is compo...
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JP05280053 |
PURPOSE: To construct an excavation shaft penetrating device small and light while torque concentration on any particular shaft is avoided. CONSTITUTION: With excavation shafts 11-15, excavating motors 31-35 are coupled to drive them ind...
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JP05272286 |
PURPOSE: To supply a large number of drilling shafts in a simultaneous and stabilized manner and embody extension penetration, avoiding an increase in the weight and size of a shaft penetration device. CONSTITUTION: There is provided a s...
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JP05209490 |
PURPOSE: To facilitate separation of a rod by a method wherein all thread connections of a rod are effected in the same kind and separation of the rod is facilitated. CONSTITUTION: A rock drilling device comprises a drilling tool with on...
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JP05209487 |
PURPOSE: To smoothly excavate the ground by clearly removing soil in a casing tube as well as greatly reducing noise and vibration during the excavation of the underground. CONSTITUTION: While injecting a soil-gelling agent through a tub...
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JP05195680 |
PURPOSE: To efficiently perform deep boring by providing a girder above a vertical shaft, providing a rod rotating/driving device and a work station at the bottom section, and providing the stock device of a lengthy rod in the vertical s...
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JP05195681 |
PURPOSE: To obtain a mobile boring device in which an erection device is simple and a mast can be extended. CONSTITUTION: A mast 20 of a boring device is supported by an erection hinge 18 that is fitted onto a vehicle 10. The erection bi...
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JP05187176 |
PURPOSE: To improve the function by providing opening/closing moving excavating edges at the lower end of a rotary cylinder for excavation and soil discharge, and arranging earth retaining outer frames on the outer periphery of the cylin...
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JP05187407 |
PURPOSE: To provide a rotational speed change-over device for an oil motor, which can remote-control a rotational speed change-over valve disposed on the body side from a control panel part without increasing the number of lines such as ...
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JP05179884 |
PURPOSE: To enable a collet chuck for gripping a rod pierced therein to grip and release the grip rapidly with strong force in a through type striking hammer device. CONSTITUTION: In a collet chuck 5, a collet 25 is provided at the outer...
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JP05141167 |
PURPOSE: To provide a shaft sinking machine capable of obtaining sufficient directional corrective force in addition to be capable of performing earth cutting in a manner, while it is only enough to set the extent of strength in a drill ...
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JP05141173 |
PURPOSE: To make a drill hole formable so efficiently without entailing any damage to an inner wall of the hole. CONSTITUTION: In drilling formation, a punch drill 12 is set up there, and a cutter 22 is rotated by a driving motor 18, thu...
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JP05133178 |
PURPOSE: To detect the position of rotational stoppage accurately, and to adjust the position of rotational stoppage easily regarding a rotational stopping position detector for an automatic rotational stop device automatically aligning ...
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JP05118185 |
PURPOSE: To prolong the service life of a cutter bit, and achieve the promotion of miniaturization and robotization of a excavator as well as to increase a drilling rate yet speedier. CONSTITUTION: A laser beam is applied to a rock bed i...
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JP05118184 |
PURPOSE: To keep off any damage to a sealing member as the extent of internal pressure at the side of a lower casing becomes heightened by a temperature rise in lubricating oil at a time when an earth auger device is operated. CONSTITUTI...
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JP05106385 |
PURPOSE: To facilitate movement by providing a driving means vertically movable while fitted to a conveying means, an excavating means connected to the output shaft of the driving means, and a guiding means restricting the horizontal mov...
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JP05098879 |
PURPOSE: To facilitate the connection and disconnection of a piece block without using welding by fitting a plurality of piece blocks so as to cover both side walls of respective square grooves. CONSTITUTION: The inner and outer circumfe...
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JP05098878 |
PURPOSE: To simplify the handling of an operator by covering the entire circumference of a boring device with a cylindrical shielding member, so that the cover body of the shielding member can be opened or closed by the operation of a dr...
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JP05098885 |
PURPOSE: To avoid the jamming of a double pipe, and to enable the boring of a long hole even in any condition of the ground by using a device that is made up of a center-hole drifter or the like, when boring is carried out by giving a ro...
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