Title:
CONNECTING MECHANISM FOR TUNNEL SEGMENT
Document Type and Number:
Japanese Patent JP3877390
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To make possible to display a prescribed tying force by tilting the butting portion between the first segment body and the second segment body in the longitudinal direction of a tunnel, and expanding a clearance between the first pinched portion and the butting portion and one between the second pinched portion and the butting portion toward the forward portion of the insertion direction.
SOLUTION: The butting portion 1 of the second segment body S1 is inclined toward the longitudinal direction X of a tunnel, and a clearance between the first pinched portion m1 and the butting portion 1 and one between the second pinched portion m2 and the butting portion 1 are made wider toward the forward portion of the insertion direction of a connecting device R. When the second segment body S1 is pushed toward an existing segment S3, the connecting device R moves toward the existing segment S3. The amount of protrusion of the connecting device R from the butting portion 1 increases, and by pushing the second segment body S2 to the segment S3, both segments bodies S1, S2 can be tied by a nearly fixed tying force. Therefore, reliable connections can be obtained.
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Inventors:
Katsuhiko Mukai
Kazunori Tsujimoto
Tsutomu Konno
Kazunori Tsujimoto
Tsutomu Konno
Application Number:
JP25584597A
Publication Date:
February 07, 2007
Filing Date:
September 22, 1997
Export Citation:
Assignee:
Kubota Corporation
International Classes:
E21D11/04; E21D11/08; (IPC1-7): E21D11/08; E21D11/04
Domestic Patent References:
| JP6299796A | ||||
| JP11044192A | ||||
| JP3363053B2 | ||||
| JP3753480B2 |
Attorney, Agent or Firm:
Shuichiro Kitamura