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JPH07150566A |
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...
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JPH0753369B2 |
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JPH0754075B2 |
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JPH0724473Y2 |
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JPH0724418Y2 |
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JPH0724475Y2 |
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JPH0724474Y2 |
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JPH0749750B2 |
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JPH0720232Y2 |
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JPH0725091U |
[Purpose] It is an object of the present invention to provide a bolt gripping device that avoids collision and wear between parts when transmitting strong rotation and impact, and does not cause seizure due to breakage or friction. [Cons...
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JPH0716777Y2 |
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JPH0716756Y2 |
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JPH0715912Y2 |
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JPH0715911Y2 |
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JPH0733758B2 |
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JPH0714470Y2 |
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JPH0712430Y2 |
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JPH0771181A |
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...
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JPH077430Y2 |
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JPH076230Y2 |
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JPH0742150A |
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...
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JPH0711235B2 |
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JPH0711238B2 |
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JPH076190B2 |
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JPH076794B2 |
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JPH076342B2 |
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JPH076184B2 |
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JPH0726864A |
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...
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JPH07540Y2 |
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JPH0696844B2 |
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JPH0686789B2 |
An arrangement for supporting of an axial bearing of a drilling machine which comprises a body (1) supported by a carriage (15) and a rotation bushing (5) mounting rotatably in the body for rotation of a shank (10). An axial bearing (8) ...
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JPH0640711Y2 |
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JPH06294271A |
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...
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JPH0674587B2 |
A stopper apparatus for neutralizing rotary reaction force set up by the rotation of a casing in an all-casing driver (1), comprises a long transmission frame (300) (323) for transmitting the reaction force, including a base frame (1a) c...
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JPH0670324B2 |
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JPH0663416B2 |
A whipstock mill for milling through the casing wall which incorporates a pressure drop tattletale to signal the operator that the milling operation should be halted. The milling tool includes a longitudinal fluid passageway which commun...
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JPH06200690A |
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...
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JPH0652033B2 |
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JPH0652034B2 |
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JPH0624466Y2 |
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JPH0647902B2 |
A drilling derrick (15) is provided with two upwardly extending guide rails (17). A support frame (16) is slidably mounted on the guide rails (17). The support frame (16) supports a top drive (10), a pipe wrench (26,31), and pipe positio...
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JPH0643695B2 |
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JPH06146254A |
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...
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JPH06137056A |
PURPOSE: To make it possible to form an excavated hole whose cylinder-shaped surface is uneven by installing a large excavation blade directly connected to the main shaft of an excavation machine and a support mechanism which incorporate...
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JPH0633709B2 |
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JPH0631512B2 |
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JPH0611081Y2 |
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JPH0619139B2 |
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JPH069061Y2 |
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JPH06501881A |
System including method and apparatus for treating contaminated underwater sediment by lowering a hollow casing to an underbed, lowering a power driven Kelly bar with injecting and mixing blade fed with treatment material such as solidif...
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