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JP2965771B2 |
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JP2963066B2 |
To bury an embedding pipe having a larger diameter by using a compressor of the same capacity with a compressor for a smaller diameter pipe. A drilling rod 8 provided with a drilling bit 13 is inserted into the front end of the inside of...
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JP2960032B2 |
To obtain a crushing device for crushing a hard subsoil with light vibration and light noises by means of a drill and the crushing device. A crushing device is so constituted that a drill shaft 5 is extended from a drill driving source 4...
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JP2954510B2 |
To carry out both the excavation and the taking-out of cuttings by one drilling machine by circularly drilling the ground by a cylindrical drilling member, and by grasping the cuttings by means of a cuttings grasping member inside a cyli...
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JP2599757Y2 |
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JPH11247573A |
To bore a pit hole with a firm pit peripheral-wall, in which there is no possibility of collapse, easily in a ground surely while realizing complete earth no-removal in the boring construction method and device of the foundation ground. ...
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JP2947726B2 |
PURPOSE: To provide an image system for supporting remote operation for which a fish-eye lens is used. CONSTITUTION: Two units of a pair of image pickup machines 6a, 6b which photograph a pair of omnidirection images with the fish-eye le...
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JP2943836B2 |
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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JP2943845B2 |
PURPOSE: To maintain an efficient excavation work by providing an auger drill within a freely rotatable drum easing formed to be dividable along a lengthwise direction and fitted with a cutting tooth at the forward end, and excavating an...
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JP2938347B2 |
PURPOSE: To provide a torque limiter for a construction machine devised to protect a tool. CONSTITUTION: Engagement grooves 58, 60 are formed on a cylindrical sliding contact surface around a rotation center formed on a case member 30 in...
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JP2936143B2 |
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JP2935076B2 |
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JPH11219743A |
To improve the reliability of cable connection by making the connecting element group of a system for transmitting data and currents to a horizontal boring machine installing and destructing/replacing a feed line movable in the relative ...
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JP2933245B2 |
PURPOSE: To immediately detect the contact of a metal boring rod of a boring machine with a metal pipe buried in the ground when the ground is digged by the metal boring rod. CONSTITUTION: Voltage from a DC powre supply 6 is applied betw...
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JP2929469B2 |
To prevent an earth auger from deformation even if it is hung up by one-point hanging when the auger after completion of boring work is to be collected back. An earth auger 10 includes a shaft split in a plurality of segments 11, 11 and ...
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JP2930532B2 |
PURPOSE: To deal with various inclination angles by supporting a rotary table on the surface of a slope in such a way that it is freely raised and lowered, and placing an upper lift means above a lower lift means. CONSTITUTION: To instal...
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JPH11200760A |
To improve the efficiency of shaft excavation. The excavation unit 10 is equipped with a support base 12, upper and lower cylinders 14, 16, an excavator 18, a suction pipe 20 (20a), and a mortar pressure feed pipe 22. The support base 12...
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JP2915029B2 |
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JPH11173047A |
To provide a boring machine capable of modifying the pushing force of a reaction force-receiving mechanism for pushing the wall face of the hole of a ground in response to the state of the excavated ground. The boring machine is provided...
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JPH11173060A |
To improve a deaerating function by closing the tip of a pipe driven into the ground before a hardener is injected into the pipe and inserting a deaeration hose having an opening at the side into the pipe. An outer pipe having a specifie...
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JPH11173059A |
To make it easy to pull out and recover a drilling bit and a inner pipe rod when removing slime deposited in an outer pipe in the double pipe drilling method. In a drilling method, an inner pipe rod equipped with drilling bits and an out...
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JP2909006B2 |
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JP2908378B2 |
There is provided a guided drilling system and an in-the-hole shock absorber adapted therein. The guided drilling system includes a drill string configured to continuously and accurately bore a hole into the ground without the need to pe...
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JP2908682B2 |
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JP2907739B2 |
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JP2899240B2 |
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JP2897870B2 |
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JPH11125092A |
To eliminate the need for exchange of even a bit holder and a cutter drum for exchanging a flat bit and a round bit, to improve workability and excavation efficiency at an excavation site and also to reduce the cost of the whole cutter d...
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JPH11107670A |
To reduce a percussion sound by screwing a plug member, to which an elastic material is fitted, to the percussed-side end section of a shank rod while the size of both members is specified. One end of a plug-shaped member 3 is screwed to...
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JP2882937B2 |
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JP2876181B2 |
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JP2870943B2 |
The device comprises a set of rods comprising a number of rods (6) which are journalled in a surrounding set of tubes (7) by means of elastic bushings (52,53). One of the bushings is provided with a lip (54) which sealingly rests against...
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JP2870942B2 |
Device in impact machines. The device comprises a number of rods (6) provided with projections (51). The rods are journalled in a surrounding set of tubes (7) by means of elastic bushings (52,53) which are provided with grooves (57) thou...
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JPH1171984A |
To obtain a sound proof structure capable of being mounted and dismounted with ease, and also installed on a ready-made machine by closely fitting detachably a cylindrical vibration attenuating member comprising a high hysteresis elastic...
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JP2867232B2 |
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JP2859816B2 |
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JPH1130203A |
To provide a driving system for a rotary type fluid pressure equipment, capable of thoroughly avoiding foreign matter for entering from outside even under adverse conditions. This device is provided with 1st and 2nd cylinders 1, 2, a pip...
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JPH1122357A |
To reduce the possibility of transmitting vibration caused by excavation to a casing pipe and curb cost by making the casing pipe thin-walled. Advancing guide holes A, B are excavated with an excavator equipped with a guide pipe 24. Afte...
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JPH1113774A |
To drive both hexagonal and circular drive shafts so as to reduce the required number of driving bodies by providing an adapter capable of the drive shaft being adapted so as to drive a hexagonal socket or a circular socket of a rotating...
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JP2846148B2 |
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JP2836809B2 |
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JP2832452B2 |
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JPH10317865A |
To excavate a pit having high accuracy by sufficiently utilizing the original excavation capacity of a pit excavator regarding the pit excavator excavating a vertical shaft having comparatively large pit diameter and depth to a ground. T...
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JP2829525B2 |
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JPH10311192A |
To make it possible to surely and easily carry out inspection work for an automatic drill without using any instruction book. An automatic drill is equipped with a detection device 18 for detecting a working condition of an operating sec...
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JPH10311193A |
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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JP2827020B2 |
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JP2822683B2 |
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JP2585165Y2 |
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JP2816749B2 |
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