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Matches 651 - 700 out of 2,087

Document Document Title
JP3012900B2  
JP2000054769A
To readily cope with even a kelly-bar having diverse sizes and manufactured by different makers by providing an adapter that can drive a kelly-bar having diverse sizes such as an outer diameter or a rib by one driving unit. The adaptor 9...  
JP2000038890A
To fix, in a boom type earth drill mounted on a crawler crane, a rotary frame carrying a rotary table for driving a kelly-bar and a front frame in such a manner that both the frames can be fixed at any angles, that is within any work rad...  
JP3027135B2
To ensure the excavating stroke in a low space area by supporting an auger in such a manner as to be capable of being positioned in vertically different positions to a rotation driving means. In excavation, an auger driving device 14 is ...  
JP2000027577A
To reduce a time required for construction by a method wherein flushing water including slime is satisfactorily discharged without regard to the diameter and the full length of an insertion bore with an inexpensive outer casing employed....  
JP2000017979A
To easily and rapidly drill a plurality of holes. This drilling machine includes a first slide table 3 supported by a support frame 2, a drill head 5 mounted on the first slide table 3 to impart a drilling force to a drill rod 7, a secon...  
JP2000017980A
To facilitate disassembly and assembly without any deterioration in boring performance so as to improve portability by comprising freely attachable/detachable skid units, which can be freely attached/detached to/from specific end parts o...  
JP2999711B2  
JP2999717B2  
JP3022314B2
To facilitate assembly by connecting two auger drive mechanisms in parallel by an upper connecting member and a lower connecting member and installing a lock pin controlling the revolution of the upper connecting member and a control lev...  
JP2000008754A
To provide a high torque in a wide rotation speed range by changing a pole based on a frequency in an intersection point of the maximum output torques of respective poles according to frequencies in driving an inverter of a pole-change e...  
JP2000500201A  
JP2993763B2  
JPH11350864A
To provide an all-casing excavator having high general-purpose property, excelling in tightening performance (holding performance), and having a casing tube tightening device of high performance. A condition in which a casing tube 3 is o...  
JPH11343787A
To provide the supplement rod of a high service life with good heat conduction efficiency by integrally providing a screw cylindrical part making an outside diameter equal to an intermediate part and cutting a female screw on an inner fa...  
JPH11336456A
To obtain an auger driving device having large excavation capacity in spite of small size. The auger driving device has an electric motor 32 and a hydraulic motor 36 simultaneously driving an auger screw 14 while having a pressure contro...  
JP2981164B2  
JP3004133B2
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...  
JP2974670B1  
JPH11311080A
To provide an excavation control device for a construction machine that can obtain optimum excavation efficiency. A hydraulic motor 16 is used such type as a variable displacement type according to led-in pilot pressure. This excavation ...  
JP2972853B2  
JPH11294054A
To miniaturize a tube holding device, and to improve the safety of the work in the tube holding device to hold the tube and transmit the rotational force of a rotational drive source. A tube holding device 1 is provided with a rotary sha...  
JPH11294062A
To enhance excavating force by generating a crack in rock-bed by a laser beam, by installing an excavating blade in the tip part, and irradiating the laser beam forward more than the excavating blade by rotating the excavating blade. A t...  
JP2967924B2  
JP2965771B2  
JP2989350B2
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 ...  
JP2983001B2
PURPOSE: To improve safety and securely transmit a driving power, by fitting a plurality of power transmission members provided in the inside of a power transmission pipe of an excavating machine and pads provided in the outer periphery ...  
JP2599757Y2  
JPH11247575A
To facilitate drilling control, and to lighten the fatigue of a worker by arranging a pressure sensor to the intermediate section of the conveying passage of a cutting collector, comparing a detecting pressure value with a cutting proper...  
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. ...  
JP2947726B2  
JP2974881B2
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...  
JP2974670B2
To take in sediment easily in casing pipe in the excavation of a relatively large-diameter well. A plurality of wings 30 are provided in a rotary casing pipe 2, at the lower plane of the wings, provided are a plurality of sediment guide ...  
JP2936143B2  
JP2935076B2  
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 ...  
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...  
JPH11210366A
To enhance the operational performance in removing the excavated earth produced by an excavating device which forms a hole in the ground and drives a plate into the hole. An excavating device is equipped with a holder 3 in a cylindrical ...  
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...  
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...  
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...  
JPH11508009A  
JP2915029B2  
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...  
JPH11173063A
To adequately respond even when there is any change in lithology or the like during drilling operation of a hydraulic rock drill for drilling rock base. Provided are a electromagnetic proportional discharge and pressure control valve V1 ...  
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...  
JPH11173061A
To provide a dewatering method capable of greatly enhancing the working efficiency. When installing an apertured outer pipe 24 in ground, the thrust, rotation and impact from a drifter 42 are transmitted to a drilling bit 20 through an i...  
JPH11173058A
To provide a drilling method capable of smoothly discharging slime. In this drilling method, an inner rod 22 coupled to a drilling bit 20 and an outer pipe 24 for housing the inner pipe rod 22 inside the pipe are used. The inner pipe rod...  
JPH11173062A
To automatically cope with rock qualities even if they vary, by changing over the flow rate of a rotary device according as the differential pressure of a percussion device, changing over the flow rate of a feeding device according as th...  
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...  

Matches 651 - 700 out of 2,087