A hydraulic buffer sliding device and control method thereof

By setting up multiple valve blocks for use in the hydraulic main control system, a hydraulic buffer slip device is designed, which solves the problem of pressure overshoot and slow response speed of hydraulic cylinders under complex working conditions, and achieves cost reduction and system stability improvement.

CN114562488BActive Publication Date: 2025-04-01CHANGSHA ZHONGLIAN HENGTONG MACHINERY
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Patent Information

Application Number
CN202210131176.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-02-11
Publication Date
2025-04-01
Estimated Expiration
2042-02-11

AI Technical Summary

Technical Problem

In the complex operating conditions, such as ejection or instant unloading, existing hydraulic cylinders are prone to pressure overshoot and slow system response. Traditional methods solve these problems by using stronger hydraulic cylinders, resulting in a significant increase in overall production costs.

Method used

A hydraulic buffer slip device is designed. By setting up a plurality of combined valve blocks on the hydraulic main control system, including a slip cylinder, a power unit, a first control valve and a hydraulic main control system, the cooperation between these valve blocks and the system is used to realize the effective control and distribution of hydraulic oil, ensuring the stable pressure and fast response speed of the system during ejection operation.

Benefits of technology

It effectively reduces the production and use costs of hydraulic systems, and solves the problems of over-pressure and slow response speed of hydraulic cylinders during ejection operations, ensuring the stability of system branch pressure.

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Abstract

The present invention discloses a hydraulic buffer sliding device, including a sliding oil cylinder, a power unit, a first control valve and a hydraulic main control system, wherein the first control valve is connected to the power unit, and the hydraulic main control system includes a first branch arranged between a first oil port and a rodless cavity of the sliding oil cylinder, a second branch arranged between a second oil port and a rod cavity of the sliding oil cylinder, a first hydraulic logic element connected between the first branch and the second branch, the first hydraulic logic element is connected to a second control valve, the second control valve is connected to a shuttle valve, and the inlets at both ends of the shuttle valve are respectively connected to the first branch and the second branch. The present invention arranges a plurality of valve blocks for use in conjunction with each other on the hydraulic main control system, and the overall structure is simple and the layout is reasonable, which effectively reduces the production and use costs of the system, and can ensure the stability of the system branch pressure, thereby solving the problems of pressure overshoot and slow system response speed when the existing hydraulic oil cylinder is performing ejection operations.
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