Title:
荷重指示締結部品
Document Type and Number:
Japanese Patent JP7177478
Kind Code:
B2
Abstract:
A bolt load measuring arrangement 31 has a bolt 4 with a reference pin 10 extending from the root 12 of a hole 11 in the bolt. Shoulder 23 of a bore 22 defines a strainable portion datum shoulder located within the strainable portion 7 of the bolt 4. Strain datum sleeve 32 can have a strain datum surface 16 at its outer end. The strain datum sleeve 32 has a hole 33 to allow it to pass around the reference pin 10 which extends to the end of the strain datum sleeve. The reference datum 15 is on the outer end of the reference pin 10 and the strain datum 16 is on the outer end of the strain datum sleeve 32. The outer end of the strain datum sleeve includes an alignment protrusion 34 over which the measuring tool 40 engages. Fit between the alignment protrusion and the tool 40 is essential to achieving the alignment accuracy for accurate datum relative position measurements and therefore accurate load measurement. For the alignment of the measuring tool 40 to be sufficiently accurate, the engagement length 37 is at least 0.9 times the engagement width 38, being 0.9 times the width or diameter of the alignment protrusion.
Inventors:
Brown, Ian Warren
Application Number:
JP2018561038A
Publication Date:
November 24, 2022
Filing Date:
May 18, 2017
Export Citation:
Assignee:
Integrity Engineering Solutions P.Y.L.T.D.
International Classes:
F16B31/02; G01L5/00
Domestic Patent References:
| JP61181932A | ||||
| JP2008058321A |
Foreign References:
| US3943819 | ||||
| WO2016015092A1 | ||||
| WO2010140002A1 |
Attorney, Agent or Firm:
Kichi Toshio Kawa
Hiroshi Ichikawa
Hiroshi Ichikawa
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