Title:
CUTTING DEVICE FOR END PART OF STEEL PIPE PILE
Document Type and Number:
Japanese Patent JP2761367
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To easily work an adding pile by the use of a rotary pile-driver in a job field by fixedly securing a blade base impossibly to rotate on the intermediate part of a guide shaft advancing and retreating along the draw hole of a holder impossibly to rotate against the steady bracing device of the rotary pile-driver.
SOLUTION: In this rotary pile-driver, a draw hole 4 of a holder 3 sandwiched with a steady bracing device 2, a shaft hole 5, a feed screw 7, a guide shaft 10, a blade base 14, and a sliding guide 13 have a center axis 15 in common. A plurality of same cutting blades 16 are unifomly arranged on the blade base 14 so as to be on the positions of equal distance from the center axis 15 on a virtual plane squarely crossing with the center axis 15. An adding pile 11 mounted on an auger of a rotary pile-driver is rotated by a hydraulic motor, and the lower end part of the adding pile 11 is worked by cutting, by gradually raising the cutting blades 16 based on the steady bracing device 2.
Inventors:
TAKADA RIICHI
Application Number:
JP20598595A
Publication Date:
June 04, 1998
Filing Date:
August 11, 1995
Export Citation:
Assignee:
KOKUDO KISO KK
International Classes:
B23B5/16; E02D5/24; (IPC1-7): B23B5/16; E02D5/24
Attorney, Agent or Firm:
Nobumichi Miyata