Three-jaw piston ring disassembling and assembling pliers

Abstract

The invention discloses a pair of three-jaw piston ring disassembling and assembling pliers. The pair of three-jaw piston ring disassembling and assembling pliers comprises a left plier arm, a right plier arm hinged to the left plier arm, a telescopic supporting rod rotationally connected with a hinge joint part of the plier arms, a supporting arm which sleeves the telescopic supporting rod and is slidably matched with the telescopic supporting rod, a tension spring, and a supporting plier jaw which is arranged at the end of the supporting arm and used for clamping a piston ring, wherein the tension spring sleeves the telescopic supporting rod, one end of the tension spring is fixedly connected with the telescopic supporting rod, and the other end of the tension spring is fixedly connected with the supporting arm. Each plier arm is composed of a handle part, a connection part and a clamping part, the end of each clamping part is provided with a limiting plier jaw for fixing the end face of the piston ring, and the limiting plier jaws and the supporting plier jaw are located on the same plane. According to the three-jaw piston ring disassembling and assembling pliers, the piston ring is subjected to three-point positioning through the three plier jaws, expansion is achieved through the telescopic supporting rod and the tension spring, the effect that the supporting arm is automatically adjusted to adapt to the size of the piston ring so that the requirements for disassembling and assembling of piston rings with different sizes can be met is achieved, the disassembling and assembling processes are convenient and reliable, and the three-jaw piston ring disassembling and assembling pliers is suitable for disassembling and assembling of piston rings with different sizes in a wide range.

Description

Technical field [0001] The invention belongs to the field of engine maintenance tools, and specifically relates to a three-jaw type piston ring dismounting pliers. Background technique [0002] Piston ring is a metal elastic ring with large outward expansion and deformation. It is the core component of the engine. It completes the fuel gas seal together with the cylinder, piston, and cylinder wall. [0003] In the current engine maintenance process, most of the piston ring replacement and installation are performed with bare hands, and the installation is not standardized enough, which may easily cause machine damage or personal injury. Although there are some piston ring installation devices, most of them are fixed installation devices, which are only suitable for factory installation and are inconvenient to carry, and there are defects such as the inability to remove the piston ring. In addition, there are some piston ring pliers, but these piston ring pliers have certain restri...

AI Technical Summary

Problems solved by technology

[0003] At present, in the process of engine maintenance, the replacement and installation of piston rings are mostly operated by hand, and the installation is not standardized enough, which may easily cause machine damage or personal injury

Although there are some piston ring installation devices, most of them are fixed installation devices, which are only suitable for factory installation and are not convenient to carry, and there are defects such as the inability to remove the piston ring.

There are also some piston ring removal pliers, but these piston ring pliers have certain restrictions on the size of the piston rings

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