Thread anti-loosening mechanism and anti-loosening mounting method

Abstract

The invention belongs to the field of mechanical installation, and particularly relates to a thread anti-loosening mechanism and an anti-loosening installation method. The mechanism comprises an installation base, a pin shaft, a screw rod, an extension spring and a rotating arm; a threaded hole for mounting the screw rod is formed in the installation base, and a plurality of small holes are uniformly distributed along the circumferential direction of the threaded hole; the screw rod can be mounted on the installation base through the threaded hole, and two sides of the upper end of the screw rod are designed into plane structures; one end of the rotating arm is of a double-lug structure, double lugs are rotationally installed on plane structures on the two sides of the upper end of the screw rod, and the rotating arm can rotate around the screw rod; the other end of the rotating arm is further provided with a limiting protrusion capable of being inserted into a small hole in the upper surface of the installation base; pin holes are further formed in the plane structures on the two sides of the upper end of the screw rod and used for installing the pin shaft, one end of the extension spring is installed on the pin shaft, the other end is installed on the rotating arm, the length of the spring is not smaller than the distance between the threaded hole and the small hole of the installation base, and when the rotating arm rotates by any angle, the spring has a certain extension limiting effect on the rotating arm; and any screwing-in position of the screw rod is in an anti-loosening state.

Description

technical field [0001] The invention belongs to the field of mechanical installation, and in particular relates to a thread anti-loosening mechanism and an anti-loosening installation method, which is a mechanism for anti-loosening of bolts after they are installed or fixed by bolts. Background technique [0002] At present, there are roughly three anti-loosening methods commonly used for existing threaded connections. One is the mechanical locking type, that is, the form of a fuse and the form of a cotter pin on the screw and the nut. This anti-loosening method cannot be quickly disassembled; the second type It is a free-rotating type, even if it is in the form of a spring washer, this anti-loosening method is not reliable enough in a vibration environment; the third type is the bonding type, that is, apply adhesive or punching points on the threaded section. The anti-loosening method is mostly used in occasions where disassembly is infrequent. For some special application...

AI Technical Summary

Problems solved by technology

[0004] In view of the shortcomings of the existing thread anti-loosening methods that cannot be disassembled quickly, are unreliable, and cannot achieve anti-loosening at any screw position, the present invention provides a mechanism that can reliably anti-loosen the thread and realize quick disassembly

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