A self-locking fastening kit

Abstract

The invention provides a self-locking fastening set which mainly solves the problem that in the prior art, a fastener is likely to get loose in the vibration environment and consequently connection looseness is caused. The self-locking fastening set comprises a bolt, an inner nut and an outer nut, wherein the outer nut is provided with a fastener locked to the lower end face of the inner nut, the outer nut is sequentially provided with a first hole, a second hole and a threaded hole from top to bottom, the fastener is arranged in the second hole, a thread column is arranged in the threaded hole, and a spiral spring is arranged between the thread column and the fastener; the thread column is rotated, so that the upper end of the fastener stretches out of the first hole and is locked to the lower end face of the inner nut in a tightly attached mode, and the outer nut is effectively prevented from getting loose, and the anti-looseness effect is improved; in combination with an accompanying drawing, optimization modes for two kinds of fasteners including steel balls and stepped cylinders are detailed. The self-locking fastening set is simple in structure, can effectively prevent the outer nut from getting loose and provides reliable fastening connection.

Description

technical field [0001] The invention relates to the technical field of fasteners, in particular to a self-locking fastening set. Background technique [0002] Fasteners are a type of mechanical parts that are widely used. Various fasteners can be seen on various machinery, equipment, vehicles, ships, railways, bridges, buildings, etc. Most of the existing fasteners are connected and fastened by ordinary bolts and nuts, that is, ordinary bolt pairs. This kind of ordinary bolts is widely used because of its convenient disassembly and assembly; Ordinary bolt pairs in equipment and building structures are prone to loosening, which poses a great safety hazard; if the maintenance is not timely, it is easy to cause the connection to be weak or the bolts and nuts to fall off, causing major safety accidents and causing immeasurable losses. [0003] The Chinese patent with application number 200820108336X discloses a double-cap anti-loosening bolt, which mainly includes a bolt, an in...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that the fasteners in the prior art are easy to loosen in a vibrating environment, resulting in loose connections, the purpose of the present invention is to provide a self-locking fastening kit, the bolts of which are provided with juxtaposed inner nuts and outer nuts , the outer nut is provided with a locking piece that locks with the lower end of the inner nut, which can effectively prevent the outer nut from loosening and provide a tight and reliable connection

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