Title:
GROUND EXCAVATION HAMMER BIT SYSTEM AND PILE DRIVING METHOD USING SAME
Document Type and Number:
WIPO Patent Application WO/2014/038798
Kind Code:
A1
Abstract:
The present invention relates to a ground excavation hammer bit system, and to a pile driving method using same, which includes a guide device inserted into a casing pipe so as to excavate the ground, a bit housing fastened to the guide device, wing bits fastened in a rotatable manner to bit grooves on both sides of the bit housing, and a casing shoe inserted inward from the end of the casing pipe. According to the excavation hammer bit system of the above described configuration, the wing bits are respectively fastened by pins to the bit grooves formed on both sides of the body of the bit housing so that the wing bits can be rotated about the pins, and the bit housing, which is fastened in such a manner that the wing bits can be rotated, is rotated in order to accomplish excavation and digging.
Inventors:
GEEY JIN-TAE (KR)
Application Number:
PCT/KR2013/007411
Publication Date:
March 13, 2014
Filing Date:
August 16, 2013
Export Citation:
Assignee:
C & P TECH (KR)
International Classes:
E21B10/32; E21B10/36
Foreign References:
| KR100919628B1 | 2009-09-30 | |||
| KR20060032905A | 2006-04-18 | |||
| KR101132704B1 | 2012-04-02 | |||
| JP2004156296A | 2004-06-03 | |||
| JPH11200750A | 1999-07-27 |
Attorney, Agent or Firm:
HONG, Byung-Eui (KR)
홍병의 (KR)
홍병의 (KR)
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