A piston vibration reduction structure for a hydraulic breaker

Abstract

This utility model relates to a vibration damping structure for a hydraulic breaker piston, including a cylinder and a piston disposed within the cylinder, and a damping ring disposed between the piston and the cylinder. The damping ring is made of polyimide or aromatic polyamide. By placing a damping ring between the piston and the cylinder, the piston amplitude can be limited, thereby solving the problem of scoring of the cylinder and piston and improving the service life of the hydraulic breaker. By using polyimide or aromatic polyamide as the material for the damping ring, these two materials have advantages such as high temperature resistance, high strength, chemical stability, and low coefficient of thermal expansion. This makes the damping ring less prone to breakage under high-frequency vibration or cyclic load, and it can withstand repeated impacts for a long time, improving the service life of the damping ring. Furthermore, the deformation of the damping ring under long-term load is small, thereby effectively limiting the piston amplitude, solving the problem of scoring of the piston and cylinder, and improving the service life of the hydraulic breaker.

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