Title:
ROD CHANGING DEVICE
Document Type and Number:
Japanese Patent JP3613411
Kind Code:
B2
Abstract:
PURPOSE: To minimize restriction of boring work in a narrow pit by moving a rod rectilinearly when the rod is moved between a magazine and a drilling axis.
CONSTITUTION: When a rod 3 is added, the rod 3 stored in a magazine 4 is clamped by a clamp hook 54 of a rod carrier 5, a carrier arm cylinder 55 is contracted, a carrier arm 53 is rotated to take the rod 3 from the magazine 4, and at this time, the rotation amount is few. If a carrier arm cylinder 58 is elongated and contracted at the time of turning a carrier boom 52 to the guide shell 18 side, the rod 3 is rectilinearly moved to the guide shell 18 side by the link 57a action. The moving range when the rod carrier 5 is returned and the rod 3 is recovered is the same.
Inventors:
Tsutomu Kaneko
Application Number:
JP14168495A
Publication Date:
January 26, 2005
Filing Date:
June 08, 1995
Export Citation:
Assignee:
Furukawa Metal Co., Ltd.
International Classes:
E21B19/20; (IPC1-7): E21B19/20
Domestic Patent References:
| JP6002478A | ||||
| JP5118037A | ||||
| JP59004793A | ||||
| JP63315794A | ||||
| JP62185917A |
Attorney, Agent or Firm:
Tetsuya Mori
Yoshiaki Naito
Cui Shu Tetsu
Yoshiaki Naito
Cui Shu Tetsu
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