Quick-assembling anti-drop nut structure and assembling method thereof

Abstract

The invention provides a quick-assembling anti-drop nut structure and an assembling method thereof, and belongs to the field of mechanical fasteners. The problems of poor universality and troublesomeoperation of an existing locknut structure are solved. The quick-assembling anti-drop nut structure comprises a nut sleeve and a screwing sleeve which sleeves the nut sleeve in a clearance fit mode, asliding groove is formed in the inner wall of the bottom end of the screwing sleeve, a sliding sleeve is fixed on the outer wall of the nut sleeve, a return spring is arranged in the sliding groove,and the end surface of the top end of the sliding sleeve and the groove wall of the top end of the sliding groove are each of a unidirectional sawtooth structure; and the inner wall of the top end ofthe nut sleeve is provided with an anti-drop groove, an inner anti-drop sleeve and an outer anti-drop sleeve sleeving the inner anti-drop sleeve are further involved, the outer anti-drop sleeve is arranged in the anti-drop groove in a matched mode, the wall of the anti-drop groove is provided with a spiral limiting groove, a limiting block is fixed on the outer wall of the outer anti-drop sleeve,an anti-drop ring is fixed on the inner wall of the bottom end of the outer anti-drop sleeve, and an anti-drop ring is arranged in the anti-drop groove. The nut structure can be used for a common connected piece, so that the universality is better, only normal rotation is needed, and the construction efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of mechanical fasteners, and relates to a quick-install anti-loosening nut structure and an assembly method thereof. Background technique [0002] When the fasteners formed by the screw connection method are subjected to vibration, the screw connection parts will loosen and fail, and then cause serious consequences. Therefore, preventing the loosening of screw joints is one of the tasks of designing fasteners. [0003] The existing application number is 201510033943.9, which is a Chinese invention patent titled "a bolt anti-loosening structure and anti-loosening method". Counterbore holes are respectively provided on the connected part A and the connected part B, so that the bolt head is embedded in the In the countersunk hole of the connected part A, the outer side of the anti-loose sleeve set outside the fastening nut is embedded in the counterbore hole of the connected part B; and the spring washer 2 is ...

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Problems solved by technology

[0004] 1. If only the structure of the fastener is changed, it is not very difficult, but the structure also needs to set countersunk holes on the connected part A and the connected part B respectively, which is extremely difficult to modify, and if the fastener is used For ordinary connected parts, it cannot achieve the anti-loosening effect, so the versatility is poor;

[0005] 2. This structure needs to embed the bolt head in the countersunk hole of the connected part A, then screw the fastening nut, then insert the anti-loosening sleeve, and then insert the anti-loosening sleeve into the countersunk hole of the connected part B In the middle, install the second spring washer, and then screw the nut to lock; the construction process is extremely complicated and troublesome, so the construction efficiency is low

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