Title:
ANCHORING DEVICE FOR GUIDE OF BORING MACHINE
Document Type and Number:
Japanese Patent JP2934131
Kind Code:
B2
Abstract:
PURPOSE: To make it possible to efficiently bore a hole in a stable state in the case the hole is bored in a facing ground.
CONSTITUTION: A cylindrical main body 2 projecting an anchoring member 4 to the front end thereof is provided to the lower surface of a boring machine guide 20 in a slidable manner in front and rear and having a boring machine on the upper surface in a slidable manner in front and rear and fixable manner. The cylindrical main body 2 is pushed by a hydraulic cylinder 5 through coil springs 10 and 11 to bind elastically the anchoring member 4 to a facing ground and, at the same time, resistance from the facing ground in the case a hole is bored is absorbed.
Inventors:
MASUMOTO TADASHI
Application Number:
JP25228893A
Publication Date:
August 16, 1999
Filing Date:
September 14, 1993
Export Citation:
Assignee:
OKUMURAGUMI KK
International Classes:
E21B7/02; E21B15/00; E21B19/08; (IPC1-7): E21C11/00
Domestic Patent References:
| JP433789U | ||||
| JP2916103Y1 |
Attorney, Agent or Firm:
Takuya Yamamoto