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JP2965938B2 |
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JP2963681B2 |
To accurately drill by a rotary encoder for detecting the turning angle of a boom, installing a turning device between an arm and a drifter, and providing a control device for remote-controlling the angle of the turning device. A traveli...
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JPH11270267A |
To provide a pile-driver, in which workability can be improved by lengthening the operating radius of a lead tower while holding the lead tower in a vertical posture at all times regardless of the inclination of a travelling truck even w...
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JP2957114B2 |
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JP2956927B2 |
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JPH11510575A |
The present invention is directed to a method for breaking rock and other hard materials using small-charged blasting techniques followed by a mechanical impact breaker. In small-charge blasting techniques, a gas is released into the bot...
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JP2946202B2 |
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JP2945320B2 |
To obtain a rising and falling device facilitating the hanging adjustment of a work bench with tow work bench wires. A rising and falling device is equipped with tow winch drums 58 and 59 separately driven with two hydraulic motors 62 an...
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JP2935403B2 |
PURPOSE: To easily and accurately set an insertion angle for a drilling machine rod body having a bit mounted on the forward end thereof, so as to suit a planned tunnel excavation direction along the external surface of a tunnel facing p...
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JP2935401B2 |
PURPOSE: To enable the insertion of a rock-drill device as a rigid body member into specific depth of a large hole bored into a rock. CONSTITUTION: A flexible bar body 7 moving back and forth in a longitudinal direction with a jack 14 is...
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JP2934131B2 |
PURPOSE: To make it possible to efficiently bore a hole in a stable state in the case the hole is bored in a facing ground. CONSTITUTION: A cylindrical main body 2 projecting an anchoring member 4 to the front end thereof is provided to ...
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JP2927520B2 |
Device for positioning of a drill bit (1) at a positioning plane (2). A drill rig (3) is provided with two video cameras (9) for sensing the position of a light source (8) adjacent the drill bit. The video cameras are aligned in parallel...
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JPH11200759A |
To execute drilling work automatically in a caisson type pile construction method, etc., by a relatively simple rock drilling mechanism. Automatic drilling is executed by mounting a body frame 22 of a rock drilling device 21 detachably o...
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JP2922102B2 |
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JP2922142B2 |
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JPH11190185A |
To facilitate a work to move a boring machine, and to facilitate boring in a narrow place and a test in various holes by providing a mobile means by an engine or motor driving and a freely collapsible scaffold. A boring machine 11 has a ...
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JP2918431B2 |
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JP2597112Y2 |
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JP2596978Y2 |
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JP2909781B2 |
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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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JP2906734B2 |
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JP2899643B2 |
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JP2595348Y2 |
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JPH11141270A |
To improve the digging work efficiency and performance and improve running cost. In this free cross section excavator which is provided with an arm arranged on a base and a pulse generator 22 which applies high voltage pulses to a pair o...
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JPH11141262A |
To improve the constructing property by pressing a ground boring device body elevatably supported on a boom tip through a vertically expansible and contractible extending mechanism to the ground by the dead weight. A ground boring device...
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JPH11141263A |
To firmly hold an attitude of a support column which guides the vertical travel of an auger decelerator. When an auger device 18 as a pile member is embedded in the ground, downward load is applied to an auger decelerator 16 guided by a ...
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JPH11125085A |
To dig a perpendicular hole even on a slope face by supporting an auger support device equipped at the end of a mobile digging machine body by a post of which lower end is pivotted and of which upper part is made extensible. A columnar b...
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JP2888505B2 |
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JPH11117344A |
To easily carry out works by fixing an excavating rod by a bracket at the front end of an arm provided in a vehicle body and equipping a freely movable bucket at the inside of the excavating rod so as to make it possible to fix the bucke...
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JP2886089B2 |
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JPH11107667A |
To prevent interference between a swinging body and other machines without adding a counter-weight. A machine for foundation work comprising a traveling body 1, a swinging body 3 coupled to a predetermined shaft of the traveling body 1 i...
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JP2876099B2 |
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JP2876465B2 |
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JP2592615Y2 |
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JP2873623B2 |
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JPH1171757A |
To guide the rising and falling of a vibration exciter by a leader through a bracket, rise and fall and drive it, drive a pile held with a pile chuck loaded to the vibration exciter into the ground, improve a pulling out technique and to...
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JP2867232B2 |
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JP2866987B2 |
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JP2860746B2 |
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JPH1148164A |
To provide a drilling device wherein a drilling machine of rock drill or the like is held to a frame with drilling possible without depending on a scaffold, in this way, quickening of drilling work, reduction of labor and safety are ensu...
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JPH1150776A |
To prevent damage of a dust collecting part and crush a rock-bead in the condition of preventing generated dust or the like from being scattered by providing a drock drill so constructed that at the time of crushing a rock-bed by a rock ...
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JPH1136774A |
To facilitate the drawing work for a rod and reduce the weight of a feeding structure, by providing a structure clamping the rod of a rock drill and a cylinder drawing the clamping structure along a guide shell at the front end of the gu...
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JP2854227B2 |
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JP2852978B2 |
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JPH1130089A |
To simply perform and efficiently execute boring at a required angle, by constituting a simple scaffolding by assembling pipes on a normal face, and performing boring by means of a boring device mounting a rock drill on a guide cell prov...
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JP2847271B2 |
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JP2840074B2 |
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JPH10513517A |
PCT No. PCT/CA96/00058 Sec. 371 Date Jul. 28, 1997 Sec. 102(e) Date Jul. 28, 1997 PCT Filed Jan. 30, 1996 PCT Pub. No. WO96/24753 PCT Pub. Date Aug. 15, 1996A continuous control system for a mining or tunnelling machine having a boom (12...
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