Anti-loose connecting pair

Abstract

The invention provides an anti-loose connecting pair. The anti-loose connecting pair comprises a bolt. The bolt can be sequentially sleeved with a nut, a sleeve body and a ring body. A thread part isarranged at the middle portion of a rod body of the bolt. The nut is in threaded fit with the thread part of the bolt. The inner wall, with a concave-convex structure, of the sleeve body is matched and engaged with the peripheral face, similarly with a concave-convex structure, of the nut. A section of smooth wall is further arranged on the inner wall of the sleeve body. A positioning shoulder isarranged between the smooth wall on the inner wall of the sleeve body and the concave-convex structure. The end face of the sleeve body and the end face of the ring body are provided with meshing faces capable of being mutually engaged. The ring body is further provided with a pin body in the radial direction, wherein the pin body can penetrate through the bolt and the ring body. The anti-loose connecting pair can be used in high vibration occasions and achieves heavy load mechanical structure connection, convenient dismounting and mounting can be achieved, the powerful vibration resisting capability is good, the anti-loose connecting pair can bear large axial stretching load and longitudinal shearing load heavy load alternating complex stress fields, the fatigue life is long, and the anti-loose capability is high.

Description

technical field [0001] The invention belongs to the technical field of fasteners, and in particular relates to the structure, function, installation and use of a novel anti-loosening connection pair. Background technique [0002] The connection of strong vibration and heavy-duty mechanical structures usually uses bolt-nut threaded connection or welded connection, but the conventional bolt-nut connection has low resistance to strong vibration, is easy to loosen, has a short service life cycle, and high maintenance costs in the later period, while welded connections It is not easy to disassemble and is not suitable for periodic disassembly and inspection. It is time-consuming and laborious, and it is easy to damage the body, causing inconvenience to both installation and use. [0003] In order to achieve convenient disassembly and assembly, it can be used safely in strong vibration occasions, can realize the safe connection of heavy-duty mechanical structures, can withstand mu...

AI Technical Summary

Problems solved by technology

[0002] The connection of strong vibration and heavy-duty mechanical structures usually uses bolt-nut threaded connection or welded connection, but the conventional bolt-nut connection has low resistance to strong vibration, is easy to loosen, has a short service life cycle, and high maintenance costs in the later period, while welded connections Not easy to disassemble, not suitable for periodic disassembly and inspection, time-consuming and labor-intensive, and easy to damage the body, causing inconvenience to both installation and use

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