Anti-loosening thread pair and anti-loosening thread parts that can inhibit interface slippage

A technology of threaded parts and threaded pairs, applied in the field of mechanical connection, can solve the problems of fracture of threaded connection structural parts, slippage of threaded connection interface, and reduction of connecting force, etc., so as to improve the tightness, restrain the interface slippage, and moderate the tightening torque. Effect

Active Publication Date: 2020-09-29
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, under complex working conditions (vibration, shock, alternating temperature, etc.), threaded connections often produce interfacial slippage, resulting in loosening and failure
Thread looseness will not only reduce the connection force, but also induce the overall fracture of threaded structural parts (such as bolts), causing serious safety accidents

Method used

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  • Anti-loosening thread pair and anti-loosening thread parts that can inhibit interface slippage
  • Anti-loosening thread pair and anti-loosening thread parts that can inhibit interface slippage
  • Anti-loosening thread pair and anti-loosening thread parts that can inhibit interface slippage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] like figure 1 As shown, the anti-loosening thread pair 100 capable of inhibiting interface slippage is mainly composed of a first threaded member 10 and a second threaded member 20 . The first threaded member 10 may be machined with an inner hole, and the inner wall surface of the inner hole may be machined with first thread teeth extending along a helical line. The second threaded member 20 can be roughly processed into a rod shape, the outer wall surface of the second threaded member 20 can be processed with second thread teeth extending along the helical line, and at least a part between two adjacent second thread teeth can be processed with The transition surface 30, and the second thread can correspond to the first thread. In Embodiment 1, the first screw member 10 is screwed to the left relative to the second screw member 20 to form a force-bearing fitting area.

[0061] The transition surface 30 between two adjacent second thread teeth can be processed into an ...

Embodiment 2

[0063] like figure 2 and image 3 As shown, the main structure of the anti-loosening thread pair 100 that can restrain the interface slip in the second embodiment is basically the same as the above-mentioned embodiment. In the second embodiment, the first screw 10 is relative to the second screw 20 Tighten to the left to create a load bearing fit area. The transition surface 30 between two adjacent second thread teeth can be processed into a curved surface, and a limited portion, that is, a groove 50 , can be processed on the transition surface 30 .

[0064] During the tightening process of the anti-loosening thread pair 100 , the tooth crest 40 can squeeze the transition surface 30 , and can also achieve a nested fit with the groove 50 while squeezing the transition surface 30 , so as to suppress the bearing force of the anti-loosening thread pair 100 . The purpose of the radial dislocation of the mating area.

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Abstract

The invention provides an anti-loosening threaded pair capable of inhibiting interface slip and an anti-loosening threaded piece. The anti-loosening threaded pair comprises a first threaded piece anda second threaded piece. The first threaded piece is provided with an inner hole, first threaded teeth extending along a spiral line of the inner hole are arranged on the inner wall surface of the inner hole, and tooth crests are formed on the first threaded teeth. The second threaded piece has a rod-shaped structure, the outer wall surface of the second threaded piece is provided with second threaded teeth extending along a spiral line of the second threaded piece and corresponding to the first threaded teeth, a transition surface is formed by at least some part of portions between two adjacent second threaded teeth, and the second threaded piece is in threaded connection with the first threaded piece. In the direction in which the first threaded piece is tightened toward the second threaded piece, the tooth crests and the transition surfaces of the first threaded teeth are pressed against each other to form a force bearing cooperation region to limit radial dislocation between the first threaded piece and the second threaded piece. According to the embodiment of the anti-loosening threaded pair, the anti-loosening threaded pair can effectively avoid radial dislocation between thefirst threaded piece and the second threaded piece and improve the reliability of mechanical products.

Description

technical field [0001] The present invention relates to the technical field of mechanical connection, and more particularly, to an anti-loosening thread pair and an anti-loosening threaded member that can restrain interface slippage. Background technique [0002] Threaded connection is one of the most widely used connection methods in the fields of machinery, construction, transportation, aviation, aerospace, ships, and furniture. It can generate a large connection force, which is convenient for repeated disassembly and assembly, easy for mass production, and low cost. [0003] However, under complex working conditions (vibration, shock, alternating temperature, etc.), threaded connections often experience interfacial slippage, resulting in loosening failures. Loose threads will not only reduce the connection force, but also induce the overall fracture of threaded connection structural parts (such as bolts), causing serious safety accidents. SUMMARY OF THE INVENTION [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16B39/30
CPCF16B39/30
Inventor 丁晓宇熊辉刘检华
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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