Title:
PULLING DEVICE
Document Type and Number:
Japanese Patent JP2020020370
Kind Code:
A
Abstract:
To have a pulling device screwed to a portion different from the shank of a bolt and pulling the bolt, thereby reducing an error in axial force detection, etc.SOLUTION: Provided is a pulling device 1 for pulling upward a bolt 10, with a washer 11 inserted through, that is fastened to an object H to be fastened, characterized by comprising: a connection member 2 having a first female thread part 21a1 to which a first male thread part 11a is screwed, the first male thread part 11a being formed on the outer circumferential surface of the washer 11; a pulling mechanism 3 for pulling the connection member 2 while the first male thread part 11a is screwed to the first female thread part 21a1; and a tension receiving part 4 arranged around the outer circumference of the connection member 2, for receiving a reaction force acting from the object H to be fastened when pulled by the pulling mechanism 3.SELECTED DRAWING: Figure 1
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Inventors:
KOMATSU KYOICHI
TSUJI HIROSHI
TSUJI OSAMU
ITO SEIJI
TSUJI HIROSHI
TSUJI OSAMU
ITO SEIJI
Application Number:
JP2018143188A
Publication Date:
February 06, 2020
Filing Date:
July 31, 2018
Export Citation:
Assignee:
TOHNICHI MFG CO LTD
International Classes:
F16B31/02; G01L5/00
Domestic Patent References:
| JPH08166299A | 1996-06-25 | |||
| JPS5639612U | 1981-04-13 | |||
| JP4028254B2 | 2007-12-26 | |||
| JPH10170362A | 1998-06-26 | |||
| JP2014214454A | 2014-11-17 | |||
| JP2011021989A | 2011-02-03 | |||
| JP2014149043A | 2014-08-21 |
Foreign References:
| US20090084197A1 | 2009-04-02 | |||
| US4246810A | 1981-01-27 |
Attorney, Agent or Firm:
Mizuno Katsufumi
Makoto Ide
Hiroshi Suzawa
Hisamatsu Yosuke
Makoto Ide
Hiroshi Suzawa
Hisamatsu Yosuke