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Patent Searching and Data


Matches 651 - 700 out of 2,057

Document Document Title
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...  
JPH11173057A
To provide a drilling method capable of easily securing the linearity of a pipe body to be inserted to natural ground and smoothly discharging slime. In this drilling method, an inner rod 22 coupled to a drilling bit 20 and an outer pipe...  
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...  
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...  
JP2909006B2  
JP2907739B2  
JP2908682B2  
JP2908378B2  
JPH11159465A
To provide a high and low speed switching circuit for an earth drill which is capable of revolving an earth drill bucket at high speed in air. Discharge oil of hydraulic pumps 41A, 41B is supplied to variable displacement hydraulic motor...  
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...  
JP2899240B2  
JP2897870B2  
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...  
JPH11141254A
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 ...  
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...  
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 ...  
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...  
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...  
JPH11107660A
To carry out gripping surely without damaging a casing by a chuck spacer when biassed collision against the casing of the chuck spacer is generated due to the variation of the accuracy of manufacture. The chuck is constituted so that one...  
JP2882937B2  
JP11093558A
To make load for each cutter part the most suitable, discharge drill cuttings and improve performance of a drill tool by making the main cutter and the auxiliary cutter of a drill head specific shapes. A rock drill 1 mounted on a rotatio...  
JP2876181B2  
JP11081848A
To install a frame more easily on a guide rail. To a frame 10 in which an auger drive mechanism is incorporated, a sheave block 36 on which a suspension sheave 20 is rotatably supported is detachably connected to be rotatable around a su...  
JP2870942B2  
JP2870943B2  
JP11071984A
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...  
JP2867232B2  
JPH1162454A
To heighten connecting strength and cope with unequal settlement of an outrigger and the relative position change of a tubing device and a base machine during excavating work by connecting the tubing device and the base machine with four...  
JPH1151690A
To sustain the accuracy of inclination angle of a tilting body without requiring a highly accurate control technology or a precise machining technology by applying an external force for turning around a pivot to the inclining body and tr...  
JP2859816B2  

Matches 651 - 700 out of 2,057