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Bolt-nut connecting pair comprehensive performance testing device

A comprehensive performance and test device technology, which is applied in the direction of measuring devices, mechanical devices, and mechanical parts testing, etc., can solve the problems of unsupported surface friction torque friction coefficient, thread friction coefficient, total friction coefficient detection, etc.

Active Publication Date: 2021-03-26
JINAN NAKE IND TRADE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the bolt fastener torsion testing machine in the prior art can generally detect the torque in the test, the axial pretightening force, and the torque coefficient, but cannot check the friction torque of the bearing surface, the friction coefficient of the bearing surface, the thread friction coefficient and the total Coefficient of friction is tested

Method used

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  • Bolt-nut connecting pair comprehensive performance testing device
  • Bolt-nut connecting pair comprehensive performance testing device
  • Bolt-nut connecting pair comprehensive performance testing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Attached below Figure 1-4 To further describe the present invention, a kind of bolt and nut connection pair comprehensive performance test device, such as figure 1 As shown, it includes fuselage support cabinet 1, equipment platform 2, tightening torque applying device and test tooling, the tightening torque applying device and test tooling are respectively arranged on both sides of the equipment platform 2 in the length direction, the tightening torque applying device and The upper surface of the equipment platform 2 is detachably connected, and the test tooling is slidingly connected to the upper surface of the equipment platform 2 .

[0022] like figure 1 As shown, a power device, a dynamic torque sensor 4 and a torque sleeve 3 are sequentially arranged in the tightening torque applying device, and the torque sleeve 3 can be driven by the power device to twist the nut 21 installed on the test bolt 22; the center of the test tooling The front bearing platen 5, the ...

Embodiment 2

[0048] The difference between this embodiment and Embodiment 1 is: the outer diameter of the cylinder of the load-bearing pull sleeve 18 is 0.1mm smaller than the inner diameter of the central hole of the pull-twist composite sensor 6;

[0049] The upper surface of the equipment platen 2 is provided with a lead screw guide rail 9 and a polished rod guide rail, the lead screw guide rail 9 is parallel to the polished rod guide rail, and the slide block of the test tool base plate 23 is matched with the lead screw guide rail 9 and the polished rod guide rail respectively.

Embodiment 3

[0051] The difference between this embodiment and Embodiment 1 is that the quick pressing mechanism 8 is a cam pressing mechanism.

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Abstract

The invention belongs to the technical field of fastener performance testing, and particularly relates to a bolt and nut connecting pair comprehensive performance testing device. Compared with the prior art,the testing device (1)breaks through the situation that a bolt and nut connecting pair comprehensive performance testing machine depends on foreign imports, and (2) can detect not only the fastening torque and the axial pre-tightening force of fasteners such as high-strength bolts, screws and nuts and connecting piece products, but also the friction torque, the friction coefficient, the thread friction coefficient and the total friction coefficient of the supporting surface.

Description

technical field [0001] The patent of the invention belongs to the technical field of fastener performance testing, and in particular relates to a comprehensive performance testing device for bolt and nut connection pairs. Background technique [0002] Most of the bolt fastener torsion testing machines in the existing technology are imported products, and the performance test of bolt fasteners still relies on imported equipment from abroad. It is urgent for domestic enterprises to conduct analysis and research on threaded fastener testing, independently develop measurement and control systems and software, thus having independent intellectual property rights. In addition, the bolt fastener torsion testing machine in the prior art can generally detect the torque in the test, the axial pretightening force, and the torque coefficient, but cannot check the friction torque of the bearing surface, the friction coefficient of the bearing surface, the thread friction coefficient and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/24G01M13/00G01N19/02
CPCG01L5/243G01M13/00G01N19/02
Inventor 赵圣珍
Owner JINAN NAKE IND TRADE