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Patent Searching and Data


Matches 651 - 700 out of 2,175

Document Document Title
JP2002227203A
To obtain driving hydraulic device driving a construction device for preventing the damage of the device or the occurrence of a noise.The construction device driving hydraulic device is so constituted that a hydraulic oil is supplied and...  
JP2002227580A
To provide a means for shortening the time required for passing a core tube through a hard ground and shortening the time required for passing it through an ordinary hard ground further in boring execution work.In a boring method by util...  
JP3333930B2
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....  
JP2002213172A
To provide a boring device adaptable to soft ground and firm ground.In the boring device 1 for a pile foundation, an excavating tool 8 is provided at a lower end mounted in such a manner as to be freely ascendable/descendable along an ax...  
JP3333822B2
To provide an excavating device capable of shunting an excavating shaft without cutting off a driving transmission mechanism from a driving motor. An excavating rod 77 is connected in series to an excavating shaft 50. An excavating head ...  
JP2002206387A
To facilitate the disconnecting/connecting work of a hydraulic hose without generating an internal pressure in hydraulic thruster cylinders by fixing a Kelly drive when mounting a bucket drive device on a frame.A fixing metal fixture 15 ...  
JP2002168079A
To provide a boring machine which can readily have a vibration generator added thereto by making a simple modification to an existing drill head, dispenses with a special weight, etc., and is high in excavating power, simple in structure...  
JP3295522B2
PURPOSE: To easily connect and fix an auger screw to a driving device that drives the auger screw into rotary motion. CONSTITUTION: A driving device 106 that drives an auger screw of an earth auger into rotary motion is equipped with a m...  
JP2002097882A
To provide a rotary driving device for tool capable of working with the high torque and working with the high-speed rotation.This rotary driving device for tool is provided with an inner shaft driving source 34 for rotating an inner shaf...  
JP3292398B2
PURPOSE: To prevent dispersion of moved earth drilled by means of a drilling device, and improve the strength of drilling members. CONSTITUTION: A cylindrical member 20 covering the outer circumference of the upper part of a casing 6 con...  
JP3260766B2  
JP2002504199A
(57) The control method of rock drilling performed by the rock drill which formed the summary pressure drive hammer and the rotary motor. In this method, the revolving speed of a drill rod is determined based on the value of the control ...  
JP2002030883A
To provide a control device for machine tool easy to control the number of revolution.A hydraulic motor 16 has a variable displacement volume corresponding to the pilot pressure P2 to be led in. A pilot pressure sensor 40 for detecting t...  
JP2002013598A
To form a carrier and an output shaft in a planet gear type speed reduction mechanism as a separate member to be combined together, to make possible a independent replacement and so on thereof, and to reduce costs for dies and workings f...  
JP2002013378A
To prevent a pressure plate from coming into contact with an upper face of a clutch disc to prevent the wear of mutual contact faces when a clutch is not operated.A plurality of engaging pieces 21 are protrudedly provided at outer periph...  
JP3266234B2
To prevent an erroneous operation for selecting a travel mode by forming an electric circuit for exciting a solenoid at the time of closing a circuit of micro switches detecting both neutral positions of a selector lever and a pump laver...  
JP3264394B2
PURPOSE: To improve excavating workability by generating a rotation force and thrust by means of one and the same device. CONSTITUTION: When a drive ring 5 is rotated counterclockwise, a driven gear 7 geared with a ring gear 6 is rotated...  
JP2001342788A
To provide a rod for rock drill having a hard surface layer portion by surface hardening treatment and also having a high internal toughness that is, a decrease in the hardness is gentle from the surface layer to which surface hardening ...  
JP2001336377A
To provide a hydraulic pressure circuit for a foundation work executing machine, which necessarily synchronizes working apparatuses of the machine with each other when they are simultaneously elevated/lowered by two independent plunger p...  
JP2001336378A
To provide a rocking-type all-casing excavator which can sufficiently carry out excavation even into hard ground, and is light in weight and simple in structure.A vertically moving frame 2 is arranged on a base frame 1 via a vertically m...  
JP2001329774A
To provide a rotary table with a lock release confirmation device for easily recognizing from the outside whether lock is released or not when releasing lock between a kelly-bar 3 and the rotary table 6 for driving the kelly-bar 3, in un...  
JP3253896B2
To drill slits smoothly and efficiently while giving uniform revolving torque and striking force to all juxtaposed rods in a drilling machine, in which a plurality of the rods, in which drilling bits are protruded at front ends, are juxt...  
JP2001317283A
To provide an earth drill enabling execution of excavation without lifting of a boom even when the thrust-in force of a thrustor cylinder is the maximum.A boom 2 is erected on a base machine 1 by holding it in stretch from the rear by a ...  
JP2001295574A
To perform boring without adding another rod, by making a guide shell of a boring machine shorter than a rod for boring and by using a long length of rod. A rotating-driving device 5 of the rod 7 gives rotation to the rod 7 for boring an...  
JP3215435B2  
JP2001262969A
To smoothen supply of a cooling fluid to an excavating position to keep satisfactory excavation efficiency.A direct motor 2 is formed of a cylindrical rotor 17 having a cylindrical rotating shaft 11 extending through, a cylindrical stato...  
JP3233710B2
PURPOSE: To construct a shaft having a large diameter accurately while also reducing an outbreak by small energy by inserting a hollow guide pipe into a pilot hole having a small diameter and pushing down the hollow guide pipe while rota...  
JP2001254583A
To provide an excavation construction method for miniaturizing a device and nearly fully preventing excavation force from being transmitted to the device.In the excavation construction method, the excavation device where a crushed body 9...  
JP2001241284A
To provide an efficient excavation device that has fewer troubles, low noise, and excellent cooling efficiency.A direct motor 2 is composed of a cylindrical rotor 17 which a cylindrical rotary shaft 11 penetrates, a cylindrical stator 18...  
JP2001241283A
To miniaturize an excavation device and reduce its weight, and to reduce drilling time and noise.A direct motor 2 is composed of a cylindrical rotor 17 which a cylindrical rotary shaft 11 penetrates, and a cylindrical stator 18 that is p...  
JP2001227273A
To provide a chuck device capable of easily detaching a chuck even when it is hard to detach due to firm clamping of a shaft by the chuck.This chuck device is composed of a chuck holder 41 with an external thread 46 formed at the outer p...  
JP2001227275A
To provide an excavating device capable of shunting an excavating shaft without cutting off a driving transmission mechanism from a driving motor.An excavating rod 77 is connected in series to an excavating shaft 50. An excavating head i...  
JP2001220978A
To perform vertical hole boring work at a job site limited in an upper space, for example, the inside of a tunnel.This vertical hole boring device is provided with a guide casing fastened and fixed to an upper part of the ground to be ex...  
JP2001214683A
To provide a drill rod capable of being used for a long time by preventing the abrasion in a screw section.The surface of a joint screw is provided with a hardening layer prescribed as follows. 1) The hardening layer has 0.2 to 2.5 mm in...  
JP3217997B2
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...  
JP2001207435A
To load and unload a boring rod, and to collect an inner tube of a wire line sampler in a state that a drive head device equipped with vibrators is left in a boring center.A hollow section 25, passing through from up to down, is provided...  
JP2001200684A
To provide a casing auger device and a casing auger construction method capable of excavating the hard ground efficiently with a simple structure. This casing auger device comprises a casing 11 storing a built-in auger 18 and a tubular c...  
JP2001193819A
To provide a rotary driving device which is possibly variable and used for underground or rock-bed boring device. Gears are connected to motor spindles 34 to 36 by respective clutch devices 4 to 6, and composed of a plurality of pinions ...  
JP3205869B2
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...  
JP2001182067A
To improve safety and work efficiency by using an improved rock drill in a method of boring a water retaining hole for vegetation on a face of slope. A handle of a rock drill A is improved to get safety and work efficiency, and an operat...  
JP2001173350A
To provide and excavator capable of being finely made to cool a bit and to eject chip by making air flow toward the front end side of a rotary shaft at a high speed to compress the air.A turbo-blower section 21 is constituted by fitting ...  
JP2001173349A
To compactly constitute a lubricating mechanism for lubricating a change gear provided in an excavating apparatus driving device for a ground excavator by means of an appropriate lubricant and to obtain sufficient efficiency of a space.T...  
JP2001164860A
To provide a double pipe type drilling tool capable of preventing the damage of a connection section caused by striking force and reducing the impact force, vibration, and noise at a strike even when a polyvinyl chloride pipe or a thin s...  
JP2001164859A
To use one type of an excavator driving device supporting and rotatively driving a kelly bar at a low cost in a ground excavator selectively using combinations of an excavation bucket or an excavation auger and soil kelly bars according ...  
JP2001164866A
To provide a ground excavator improving the efficiency of the excavation left work without making two actions with the right land and preventing an erroneous action.This ground excavator is provided with a kelly bar winding/ unwinding le...  
JP3198087B2
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...  
JP3193985B2
To increase efficiency in excavation by forming a boring rod as a double tube structure forming a slime discharge space, and arranging a gathering part in the middle of slime discharge passages. When a boring rod is driven into the groun...  
JP2001140571A
To provide a drill mechanism for a blasting rock drill capable of safely conducting the work and sharply reducing the cost. This drill mechanism for the blasting rock drill is provided with a rod base 16 moved and driven in the longitudi...  
JP2001115762A
To increase the efficiency in handling an operation oil supply hose. Connection outlets 4 are provided on both side surfaces of the hydraulic auger equipment 1, and hose holding arms 5 are made mountable on both side surfaces.  
JP2001115763A
To reduce the sizes and weights of soundproof covers or the like and provide a soundproof apparatus for a rotary percussion drill having good operability, excellent safety and high soundproof effect. A drill head 4 and a cleaning swivel ...  

Matches 651 - 700 out of 2,175