Title:
PULLING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/167328
Kind Code:
A1
Abstract:
[Problem] The purpose of the present invention is to improve the engagement between a pulling device and a bolt-nut assembly while limiting increases to the number of components. [Solution] A pulling device 1 which is for pulling upward a bolt-nut assembly provided with a bolt 10 inserted in a fastening target H and a nut 14 fastened to the shaft portion 11 of the bolt 10 protruding from the fastening target, and which is characterized in that: a first male thread portion 14a is formed on the outer circumferential surface of the nut 14; and the device is provided with a connecting member 2 having a first female thread portion 21a1 to which the first male thread portion 14a screws, a pulling mechanism 3 for pulling the nut 14 via the connecting member 2 in a state in which the first male thread portion 14a is screwed to the first female thread portion 21a1, and a tension receiving portion 4 disposed around the outer periphery of the connecting member 2 and for receiving a reaction force acting from the fastening target H during pulling by the pulling mechanism 3.
Inventors:
KOMATSU KYOICHI (JP)
TSUJI HIROSHI (JP)
TSUJI OSAMU (JP)
ITO SEIJI (JP)
TSUJI HIROSHI (JP)
TSUJI OSAMU (JP)
ITO SEIJI (JP)
Application Number:
PCT/JP2018/037744
Publication Date:
September 06, 2019
Filing Date:
October 10, 2018
Export Citation:
Assignee:
TOHNICHI MFG CO LTD (JP)
International Classes:
G01L5/00; F16B39/12
Foreign References:
| JPH08166299A | 1996-06-25 | |||
| JPS6426013A | 1989-01-27 | |||
| JP4028254B2 | 2007-12-26 | |||
| JPH10170362A | 1998-06-26 | |||
| US20090084197A1 | 2009-04-02 | |||
| JP4028254B2 | 2007-12-26 |
Other References:
See also references of EP 3557209A4
Attorney, Agent or Firm:
MIZUNO, Katsufumi et al. (JP)
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