Title:
DRILLING MACHINE
Document Type and Number:
Japanese Patent JP2954510
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To carry out both the excavation and the taking-out of cuttings by one drilling machine by circularly drilling the ground by a cylindrical drilling member, and by grasping the cuttings by means of a cuttings grasping member inside a cylindrical drilling member.
SOLUTION: When a cylindrical drilling member 7 is apart from the ground E, a bucket body part 12a is oscillatedly moved inside making a center of a pin 13 to close the lower part thereof to form a conical vessel. In this condition, when a turning support shaft 2 is lowered, first, the diamond cutter 9 of the cylindrical drilling member 7 is brought into contact with the ground E, and then the arm parts 12c of a bucket 12 are oscillated downward by link members 6, so that the bucket body parts 12a are opened right and left. In this condition, the turning support shaft 2 is turned for rotating the cylindrical cutting member 7 through a square shaft 3, so that the ground E is circularly drilled by the turning of the diamond cutter 9. The outer circumferential part of the debris of cuttings formed inside the cylindrical cutting member 7 is cut in a prescribed thickness by the turning of an inside cutter 10 that has been projectedly provided to the inner circumferential lower end of the cylindrical side wall 7a.
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| JPH04501446 | [Title of the Invention] Drill machine |
Inventors:
MURAMOTO NORIO
Application Number:
JP24396395A
Publication Date:
September 27, 1999
Filing Date:
August 30, 1995
Export Citation:
Assignee:
KYOWA KENKI KOGYO KK
International Classes:
E21B3/02; E21B11/04; (IPC1-7): E21B11/04
Domestic Patent References:
| JP51148904A | ||||
| JP523204A | ||||
| JP552085A |
Attorney, Agent or Firm:
Nozomi Ehara (2 outside)