Hydraulic buffer

Abstract

The invention relates to a hydraulic buffer. The hydraulic buffer comprises a hydraulic cylinder, a piston and a cylinder cover fixedly connected to the hydraulic cylinder, the piston is fixedly connected to a piston rod, wherein the cylinder cover comprises a cylindrical cavity and a throttle orifice, the throttle orifice is communicated with the cavity, the piston is fixedly connected to a buffer ring; the buffer ring is fixedly connected to a blocking ring; the blocking ring is in sliding connection with the piston rod; the end part of the piston rod is fixedly connected to a baffle; the diameter of an outer ring of the baffle is smaller than the inside diameter of the hydraulic cavity. Compared with the traditional throttle buffer of a hydraulic cylinder, the hydraulic buffer provided by the invention adopts a compression structure of the buffer ring and the throttling and buffer actions of the throttle orifice, and has the advantages of good buffer effect, small hydraulic impact and stable running.

Description

technical field [0001] The invention relates to the field of hydraulic equipment, in particular to a buffer of a hydraulic cylinder. Background technique [0002] When the hydraulic cylinder moves at high speed to the end of the stroke, severe mechanical collisions often occur. In addition, the sudden stop of the piston often causes water hammer in the pipeline, resulting in great impact and noise. The above mechanical shocks not only affect the working performance of mechanical equipment, but also damage hydraulic cylinders and other components of the hydraulic system, which is very dangerous. In order to prevent or reduce this kind of impact vibration, a buffer device is installed inside the hydraulic cylinder, which can play a buffering role to a certain extent. Generally, the buffer device used is an annular throttling buffer. The disadvantages of the traditional annular throttling buffer are poor buffering effect and large hydraulic shock. Contents of the invention ...

AI Technical Summary

Problems solved by technology

The buffer device generally used is the annular gap buffer. The disadvantages of the traditional annular gap buffer are poor buffering effect and large hydraulic impact.

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