Title:
BOLT TENSIONER
Document Type and Number:
WIPO Patent Application WO/2012/105411
Kind Code:
A1
Abstract:
This bolt tensioner is provided with: a housing (201); a puller bar (202) disposed at the center axis within the housing (201); an oil pump unit (115) that enables the movement of the puller bar (202) in the axial direction; a puller bar socket (203) that couples the puller bar (202) and a stud bolt (65) relatively immovably in the axial direction; a locking ring (205) that operates the puller bar socket (203); a nut socket (207) that is supported rotatably within the housing (201) on the tip side from the puller bar (202) and at the center axis; and a nut rotation device (209) that can rotate the nut socket (207) in the forward and reverse directions and is mounted to the outer periphery of the housing (201). The housing (201) is configured by integrally joining a first housing (231), wherein the puller bar (202) is housed, and a second housing (232), wherein the nut socket (207) is housed. As a result, the fastening and loosening of a nut with respect to a stud bolt is appropriately enabled regardless of the shape of the member to be fastened.
Inventors:
IMI KATSUMI
Application Number:
PCT/JP2012/051688
Publication Date:
August 09, 2012
Filing Date:
January 26, 2012
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
IMI KATSUMI
IMI KATSUMI
International Classes:
B25B21/00; G21C13/02; G21C19/02
Foreign References:
| JPH10180571A | 1998-07-07 | |||
| JPS5457598U | 1979-04-20 | |||
| JPS57201175A | 1982-12-09 | |||
| JPS63172994A | 1988-07-16 | |||
| JPH05312985A | 1993-11-26 | |||
| JPH10227888A | 1998-08-25 | |||
| JPS6057996B2 | 1985-12-18 |
Other References:
See also references of EP 2671678A4
Attorney, Agent or Firm:
SAKAI, Hiroaki et al. (JP)
Hiroaki Sakai (JP)
Hiroaki Sakai (JP)
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Claims: