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Patent Searching and Data


Matches 651 - 700 out of 832

Document Document Title
JP08086198
PURPOSE: To eliminate the need of mortar filling to the back so as to reduce work by rotating a projected part provided in the center of a roller bit at the forward end of an arm, taking a drilled hole of a PS steel wire as a guide, and ...  
JP08082183
PURPOSE: To reduce installation area and to promote mechanical efficiency. CONSTITUTION: A power source 5 and a rotary drive 12 are provided to the inside of a sub-structure 2 under a drum 6 provided on the sub-structure 2 and a cat shaf...  
JP2500003
PURPOSE: To provide a rotational speed change-over device for an oil motor, which can remote-control a rotational speed change-over valve disposed on the body side from a control panel part without increasing the number of lines such as ...  
JP08053987
PURPOSE: To enhance workability by inserting a guide body in guide holes beforehand bored in a rock, regulating a lateral directional movement of a bit fitted and installed in the guide body, and boring a desired hole along the guide hol...  
JP08049485
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...  
JP08028169
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...  
JP08013491
PURPOSE: To prevent a chuck band from being deformed and protect a chuck cylinder and a stationary band from being damaged as well and further enhance the excavation efficiency of a casing tube. CONSTITUTION: In a casing excavator based ...  
JP08004464
PURPOSE: To prevent the distorsion of a rotary shaft in the radial direction and efficiently stirring-mix the excavated soil and a sill feature stabilizing gent, in an auger machine. CONSTITUTION: A supporting member 32 is installed in a...  
JP08004011
PURPOSE: To enable stable work without loosing weight balance of an excavator even if a user changes the interval between excavation shafts. CONSTITUTION: In a multishaft excavator, which excavates a plurality of holes at the same time w...  
JP07324582
PURPOSE: To make automatic boring by mechanizing labor works such as the connection and disconnection of rods made using a pipe wrench or a winch. CONSTITUTION: A leader 1 is installed at the center of a body, and a rod stand 3.1 is arra...  
JP07324581
PURPOSE: To prevent concrete milk, etc., adhered to a rod from being splashed. CONSTITUTION: A swing stop mechanism 18 which is installed on a leader located on the underside of a rotating drive mechanism to rotate a rod 14 at the tip of...  
JP07317475
PURPOSE: To bore the exhaust port of an ash melting furnace without damaging a furnace wall and deteriorating work environment when molten metals and slag in the ash melting furnace, in which the incinerated ash of refuge is melted, are ...  
JP07317478
PURPOSE: To improve the operating efficiency of excavation operation by enabling excavation even to a hard bedrock, etc. CONSTITUTION: A pair of casings 21, 22 in a manner that the casings 21, 22 are freely inserted and detached are moun...  
JP07310489
PURPOSE: To increase efficiency of drilling work and to improve workability by drilling the inside of a casing by a drilling bucket by way of rotating a kelly-bar and drawing up the drilling bucket by way of shrinking retreating the kell...  
JP07301082
PURPOSE: To reduce the sound propagation of high frequency to the surrounding by a percussion type drilling device which is excellent in sound-proofing performance. CONSTITUTION: The outside of a guide cell 22 of a device main body 7 of ...  
JP07301074
PURPOSE: To provide a method and a device for building a foundation pile, by which the upper-side section of an excavated well does not crumble down. CONSTITUTION: The device for building a foundation pile comprising concrete or a simila...  
JP07269259
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...  
JP07269263
PURPOSE: To form a different-sized portion in a single drilled hole. CONSTITUTION: There are provided a muck discharge blade 3 in which a spiral blade 25 is installed to its outer periphery and which is connected to a rotary drive unit 1...  
JP07259076
PURPOSE: To provide a stirring mechanism of rectangular form which has a high working efficiency. CONSTITUTION: A rod 7a rotating in the E-direction is fitted with stirring blades 21a and a stirring head 23a and furnished with a bevel ge...  
JP07259464
PURPOSE: To provide a small sized strong casing auger device which can freely select drilling due to the dead weight of a casing auger or forced drilling, and can efficiently remove underground obstacles. CONSTITUTION: An intermediate el...  
JP07259469
PURPOSE: To facilitate analysis a lithology data by way of saving labour of formation of the lithology data by providing a detection means to detect each actuation of a machine drill and a rod changer of a drilling device and a drilling ...  
JP07247778
PURPOSE: To perform boring operation at a small space simply and easily. CONSTITUTION: A gearing for rotary power and a rotary mechanism for a boring rod 1 are set in a main body box 2 through which the boring rod 1 is passed, which is s...  
JP07208058
PURPOSE: To easily fit a frame to a guide rail. CONSTITUTION: A lifter is provided with an upper frame 34 rotatably supporting a suspended sheave and a lower frame 36 equipped with an auger driving mechanism. Guide gibs 14-17 are arrange...  
JP07208051
PURPOSE: To make it possible to drive excavation rods in the position very close to an existing building or a boundary line, by leaving only a small space at the forehead of an insertion hole of the excavation rod. CONSTITUTION: Three in...  
JP07208053
PURPOSE: To facilitate the interchanging worm of a driving motor. CONSTITUTION: A frame is provided with a lower frame 34 in which the body of a reducer 56 is fixed so that the driving motor 66 can be detached by releasing the flange con...  
JP07208054
PURPOSE: To secure a necessary torque for excavation without over loading true driving motor of an excavator and increase the revolution as high as possible to carry out efficient excavation. CONSTITUTION: A driving controller of an exca...  
JP07189576
PURPOSE: To eliminate wears of a rod groove part and a rod chucking mechanism by rotating in a single piece the output shaft transmitting a torque to rod and the rod chucking mechanism. CONSTITUTION: When the cylinder 18 of a unchucking ...  
JP07189577
PURPOSE: To decelerate the rotation of a motor step by step to lead to its stopping finally by feeding a rotational angle position signal from a screw joint part to a programmable controller. CONSTITUTION: A disc brake 10 is coupled with...  
JP07180460
PURPOSE: To reduce the abrasion and breakage of a bit and efficiently do a casing excavation by controlling the pressing force applied to a casing head in a casing excavator. CONSTITUTION: An oil path (e) is branched between the expansio...  
JP07150566
PURPOSE: To form a large diameter pile hole without applying an excessive load to an auger motor while using conventional small diameter excavating rods and screws by rotating a main shaft and a sub-shaft by a main driving motor, and rot...  
JP07133614
PURPOSE: To make the effective length of an excavating shaft longer, and enhance a working efficiency by forming the excavating shaft slidably supported on a leader out of mutiple hollow pipes, letting power for an supported excavating m...  
JP07119377
PURPOSE: To promote efficiency by providing a rising and falling slide plate to a tower-like body formed of a fixed frame and a rod, tuning an excavation pipe loaded thereto to excavate and, at the same time, providing an additional exca...  
JP07076984
PURPOSE: To improve working efficiency by gearing two two-speed type hydraulic motors with a ring gear for driving an auger screw, and regulating the feed quantity of pressure oil to each hydraulic motor to switch it to three high, middl...  
JP07071181
PURPOSE: To facilitate processing, suppress wear, and prolong lifetime by fitting a head system to be provided on a boring rod in a head sleeve to hold a bit with the aid of a key or spline, and restraining the idle rotation. CONSTITUTIO...  
JP07042150
PURPOSE: To provide the driving device and driving method of a steel pipe used for earth retaining or as a stud pipe of an anchor, which is easy to carry into a site in particular, can be assembled, disassembled, and self-erected, can dr...  
JP07026864
PURPOSE: To perform high-efficient discharge of soil by means of comparatively low pressure feed water. CONSTITUTION: An excavating pipe 2 is coupled to a connection pipe 3 to form a spindle. A plurality of excavating bits are arranged a...  
JP07026865
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...  
JP07026874
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...  
JP07018965
PURPOSE: To improve the general-purpose properties of drain construction by installing the bits of half bodies divided-into two in the vertical direction at the front end of a cylindrical section body having a spiral fin on an outer circ...  
JP06336889
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...  
JP06323077
PURPOSE: To make possible continuous operation of excavating work by installing a vertically movable sliding plate between upper and lower fixing frame bodies, excavating by inserting an excavating pipe in this, and arranging a pipe repl...  
JP06294271
PURPOSE: To make it easy to reduce the diameter of a wing pit so as to prevent clogging with sludge by projecting the end portion of the wing bit inwards to form projecting portions that overlap each other when the diameter of the bit is...  
JP06257363
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...  
JP06229182
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...  
JP06229183
PURPOSE: To cope with a plurality of methods of construction by the same device by juxtaposing a planet gear row to the rotary driving device of a casing tube and installing a kelly-bar and a torque transmission gear, which can be engage...  
JP06200690
PURPOSE: To promote the removal of each section of a pipe once drilling is completed. CONSTITUTION: Using slides 18 and 20 being mounted to a saver-sub 16 of a drill unit 12, a drill pipe 14 is locked so that it can be rotated along with...  
JP06173565
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...  
JP06158968
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 ...  
JP06146762
PURPOSE: To easily drill a large-sized shaft with an excavation service arm by drilling the shaft after having discharged water collected in a guide hole and discharging excavated earth and sand with a bucket without using water required...  
JP06146254
PURPOSE: To embody such a conception that sampling is made while a condition of the foundation is confirmed, for a normal boring machine in a dry foundation boring process, and to carry out efficient penetration of pressure air mixed cem...  

Matches 651 - 700 out of 832