ROTATIONAL REACTION TAKE-OFF METHOD FOR ROTARY CASING DRIVER

PROBLEM TO BE SOLVED: To press-in a casing into the ground, in a closest possible position to a site boundary by bringing a crawler of a working machine into contact with a reaction receiving part of a beam provided at a casing driver, so as to catch rotational reaction by the own weight of the work...

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Bibliographic Details
Main Author KUSUMI HIROSHI
Format Patent
LanguageEnglish
Published 06.10.1998
Edition6
Subjects
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
EMBANKMENTS
EXCAVATIONS
FIXED CONSTRUCTIONS
FOUNDATIONS
HYDRAULIC ENGINEERING
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
SOIL SHIFTING
UNDERGROUND OR UNDERWATER STRUCTURES
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Summary:PROBLEM TO BE SOLVED: To press-in a casing into the ground, in a closest possible position to a site boundary by bringing a crawler of a working machine into contact with a reaction receiving part of a beam provided at a casing driver, so as to catch rotational reaction by the own weight of the working machine. SOLUTION: A reaction receiving bracket 21 of a rotational reaction take-off device 3 is rotated counterclockwise around an inner pin 20 as a fulcrum. A piston rod of a hydraulic cylidner 25 is elongated to rotate a beam 19 counterclockwise around a pin 17 as a fulcrum and to bring the side face of a reaction receiving part 18 into contact with the side face of a crawler 5. After the bracket 21 is rotated clockwise and set back to the original state, the pin 20 on the tip side is inserted to fix the bracket 21 to the reaction receiving part 18. When a casing 1 is pressed-in the ground while being rotated by a casing driver 2, rotational reaction is generated, and the reaction receiving part 18 is moved in the direction of an arrow mark A. The movement of the reaction receiving part 18 in the direction of the arrow mark A is caught by the crawler 5. The casing 1 can thereby be pressed-in the ground close to a boundary.
Bibliography:Application Number: JP19970300046