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Patent Searching and Data


Matches 651 - 700 out of 2,121

Document Document Title
JP2001098870A
To provide method for determining a non-circular figure for excavating a hole having a regular polygonal cross section, without marring the advantage of rotary movement. There is provided a method for excavating a hole H, in a shape of a...  
JP2001083224A
To accurately measure a magnetic flux density even during rotating. The apparatus for measuring a magnetic field comprises a three-axis magnetic sensor TMM having sensitivity axes in directions x, y and z, a two-axis acceleration sensor ...  
JP2001073661A
To provide an earth auger capable of performing efficient excavation according to various types of ground conditions without causing power loss and lowering excavating speed. This earth auger 1 is formed so that an excavating head 8 with...  
JP3151608B2
To synchronously turn an auger driving device and a lower swing preventive device by hydraulic circuits having the simple constitution. An auger driving device arranged in a leader of a pile driver so as to be ascendable/descendable, is ...  
JP2001020648A
To provide a hydraulic driving device operating a diameter-expanding blade mechanism in an undercut driving drilling device forming a diametral expanding section in its midway to a hole drilled in concrete or soil.The undercut drilling d...  
JP2001012178A
To provide an electric earth auger capable of eliminating a power generation device mounted in a rear part of a base machine and driving a power generator by an engine of the base machine.In an electric earth auger in which a leader erec...  
JP2001011855A
To provide pile installation by inner excavator capable of synchronizing with expansion control of a forced cylinder to drive a risng and falling hydraulic motor and making simply earth-moving operaion.An auger driving device 10 for driv...  
JP2000356089A
To provide a method and device for excavating a vertical shaft that can easily collect and discharge the excavated soil for enhanced efficiency of excavation by avoiding the use of a hollow pipe that penetrates the ground to be excavated...  
JP2000320282A
To provide a drilling device requiring no installation work as well as withdrawal work or the like for a rotational reaction force holding pedestal. This drilling device is directly or indirectly suspended by a crane, and it is constitut...  
JP2000320281A
To transmit a torque of a single auger to an output coupling to obtain a reverse torque against the output coupling from a reversal output coupling by connecting the input coupling of an output changeover device to the output coupling of...  
JP3127307B2
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...  
JP3119467B2
PURPOSE: To eliminate loss of soil discharge quantity due to reverse rotation of a screw in the case of carrying out foundation improvement by way of injecting a solidifying agent and to certainly carry out soil discharge in required qua...  
JP2000265770A
To provide accurate synchronous rotation by connecting hydraulic motors in series and compensating internal leakage through a refilling circuit and also to enable switching over an arbitrary hydraulic motor easily to an independent drive...  
JP2000265769A
To eliminate the fluctuation of the number of revolution of respective ahydraulic motors due to oil leakage brought when a plurality of hydraulic motors are connected by transmission means to give an interlocking mition and connected in ...  
JP3088097B2  
JP2000226978A
To supply electric power to an auger without providing a control board and without enlarging the size of a generator. In the power generation device of an earth auger machine driven by an electric motor such as an auger screw, an open ph...  
JP2000220372A
To provide a reverse-type shaft-excavating machine having a means which prevents drill pipe or the like from being clogged with gravels and prevents the working efficiency from decreasing. A control part 15 preventing gravels from passin...  
JP2000204877A
To provide a method of placing a reinforcement into a soil mortar forepoling capable of rapidly placing the core material in tunneling. A method of placing a reinforcement into a soil mortar forepoling comprises a preparation work stage ...  
JP3067236B2  
JP3066772B2  
JP3067237B2  
JP3067627B2  
JP3064460B2  
JP3055072B2  
JP2000154691A
To provide a hard-rock layer excavator capable of excavating a hard rock layer by a simple facility.The hard-rock layer excavator has a roll-drive mechanism having a kelly-bar 10 inserted into a pit hole excavated up to a hard rock layer...  
JP2000145347A
To provide a guide device for preventing the bending of kelly-bar of earth drill, which has a simple construction and is low in cost. A reel table is attached to the lower part of a kelley drive device 5 through a center joint 9. A joint...  
JP2604528Y2  
JP2000130067A
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 ...  
JP2000120363A
To smoothly perform supplementary lifting work following excavating work, accurately and safely execute excavation by sufficiently supporting reaction force of excavation, and simplify a structure.Each base end of a front frame 38, a der...  
JP2000096971A
To make the structure compact and lightweight and to improve workability in installation and operability in execution of excavation work for an apparatus and a method for excavating vertical shaft.With the present vertical shaft excavati...  
JP3050523B2
To provide a device for sufficiently removing a rotational reaction force even through the ground is weak. Reaction force removing members 64, 66 are coupled to opposite sides of a tubing device for pushing and rotating a casing tube so ...  
JP3049177B2
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 ...  
JP2000080876A
To increase the construction efficiency of an excavating device having an inner rod inserted in an outer casing and to excavate a hole as designed so that it is good in straightness with no hole curving, by imparting rotary action also t...  
JP3046249B2
To permit an unmanned operation in a vertical hole by mechanizing the work of drilling a noncircular vertical hole. Moving rails 7 are laid parallel to each other over a drilling range where a vertical hole is to be drilled, a gate-shape...  
JP3019110B2  
JP2000064755A
To provide an excavating bucket drive equipment capable of performing an optimum control for a drive torque acting on a hydraulic motor with a simple circuit configuration. In a drive circuit of a hydraulic motor 2, provided are an elect...  
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...  
JP2999717B2  
JP2999711B2  
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...  

Matches 651 - 700 out of 2,121