Quick dismounting device and method for cotter pin

Abstract

The invention discloses a quick dismounting device and method for a cotter pin, and belongs to the field of assembly. The quick dismounting device comprises two clamping parts which are movably riveted with each other. Each clamping part comprises a clamping area and a holding area connected with the clamping area, each clamping area comprises a clamping piece and a supporting piece, and the clamping pieces and the supporting pieces are located on the same horizontal plane. Each clamping piece comprises a clamping end, wherein a clamping cutting edge is arranged at the end portion of the clamping end, and each supporting piece comprises an arc-shaped supporting end. The clamping cutting edges are additionally arranged at the end portions of the clamping parts, the clamping cutting edges are partially sunken into the tail of the cotter pin under the action of clamping force, the cotter pin can be effectively clamped, deformation and dislocation of the cotter pin in the disassembling process are avoided, and the cotter pin is prevented from sliding and loosening in the clamping process. A jaw is additionally arranged and can pinch off the tail part of the opened cotter pin, so that the residual cotter pin forms a barrier-free pin, the cotter pin is conveniently pulled out, a nut and a bolt are not damaged, and the disassembly is quicker after direct pulling.

Description

technical field [0001] The invention relates to the field of assembly, in particular to a quick disassembly device and method for a cotter pin, which is mainly used in the disassembly process of cotter pins in various electromechanical equipment and systems. Background technique [0002] Cotter pin is a kind of metal hardware, commonly known as spring pin, safety pin, and also a mechanical part, mainly used for threaded connection and anti-loosening. After tightening the nut, insert the split pin into the nut groove and the hole at the end of the bolt, and pull the tail of the split pin apart to prevent the relative rotation between the nut and the bolt. [0003] For ordinary use occasions, it is enough to open the cotter pin to 60°, which can meet the anti-loosening requirements, and the installation work can be completed by using ordinary screwdrivers and wrenches. However, for fields with high reliability requirements such as aviation and aerospace equipment, it is neces...

AI Technical Summary

Problems solved by technology

However, after the cotter pin is installed, it is tightly connected with the nut, so it is difficult to disassemble it with ordinary tools

When repairing or reinstalling the cotter pin is required, the original cotter pin is difficult to disassemble safely, and the nut and other parts are easily damaged during the disassembly process

[0004] At the same time, due to the current general-purpose tools such as needle-nose pliers and flat-nose pliers, in order not to damage the parts, although the clamping area is provided with anti-skid lines, the lines are relatively shallow, especially the cotter pins are semicircular, and the force-bearing area is narrow. , so it is more difficult to clamp, easy to slide, fall off, and cause damage to the nut

[0005] To sum up, in the field of cotter pin installation and disassembly, there is still a lack of a small size, simple structure, easy to operate, easy to carry disassembly device and corresponding quick disassembly method

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