Jig for testing notch sensitivity of bolt

A test fixture and sensitivity technology, applied in measuring devices, strength characteristics, instruments, etc., can solve the problem of only axial load test, etc., and achieve the effect of convenient installation, convenient test operation and high measurement accuracy

Inactive Publication Date: 2013-05-22
NO 5711 FACTORY OF CHINA AVIATION IND NO 1 GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the notch sensitivity test is carried out in the production of special material bolts. The common method is to connect the bolt between two clamping parts and do the tensile test on the tensile machine. The disadvantage is that only the shaft Axial load test requires special tensile equipment

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  • Jig for testing notch sensitivity of bolt
  • Jig for testing notch sensitivity of bolt
  • Jig for testing notch sensitivity of bolt

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Embodiment Construction

[0019] see figure 1 , 2 , 4, 5, 10, the bolt notch sensitivity test fixture includes upper and lower tensile plates 1 and 2, and there is a central hole between the upper and lower tensile plates 1 and 2 for connecting the test bolt 3; the upper and lower tensile plates 1 and 2 A test bolt 3 is connected between , 2 (connected during the test, and the nut is tightened); the upper pressure plate 4 is connected to the upper and lower tensile plates 1 and 2 through the two bolt ejectors 5 at intervals, that is, the bolt ejector 5 is two There is a stop 9 (reduced diameter) at the end, which clamps the upper pressing plate 4 and the lower pressing plate 6.

[0020] see figure 1 , 3 , the lower pressing plate 6 is connected to the lower and upper tensile plates 2 and 1 at intervals through the other two bolt push rods 7 . There are four bolt jacks in total, the two bolt jacks 5 connected with the upper pressure plate 4 are arranged in parallel, and the two bolt jacks 7 connec...

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PUM

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Abstract

The invention relates to bolt testing tools and particularly relates to a jig for testing the notch sensitivity of a bolt. The jig comprises an upper stretching plate and a lower stretching plate, wherein center holes which are used for being connected with a tested bolt are formed in the middles of the upper and lower stretching plates and are used for connecting a tested bolt between the upper stretching plate and the lower stretching plate; an upper pressing plate is in spacing connection with the upper stretching plate and the lower stretching plate through more than two bolt push rods; and a lower pressing plate is in spacing connection with the lower stretching plate and the upper stretching plate through another more than two bolt push rods. According to testing requirements, test clamp blocks with different shapes can be prepared simultaneously so as to change the stress of the tested bolt, and the then requirements on multiple test indicators are met. The jig has the advantages that the performances of the bolts can be determined by applying pressing-type axial loads, the tested bolt and the testing jig can be mounted conveniently and fast, the testing operation is convenient, and the test accuracy is high.

Description

[0001] technical field [0002] The invention relates to a bolt test fixture, that is, a bolt notch sensitivity test fixture. Background technique [0003] In the prior art, the notch sensitivity test is carried out in the production of special material bolts. The common method is to connect the bolt between two clamping parts and do the tensile test on the tensile machine. The disadvantage is that only the shaft Axial load tests require specialized tensile equipment. Contents of the invention [0004] The object of the present invention is to provide a bolt notch sensitivity test fixture that meets the test index requirements and can be used for compression axial load tests in view of the above-mentioned deficiencies. [0005] The technical solution of the present invention is: a bolt notch sensitivity test fixture includes upper and lower tensile plates, and there is a central hole for connecting the test bolts in the middle of the upper and lower tensile plates, which is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/04
Inventor 张守良李航
Owner NO 5711 FACTORY OF CHINA AVIATION IND NO 1 GRP
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