Bidirectional symmetrical balanced damping safety control combination valve

By adopting a bidirectional symmetric balanced damping safety control combination valve in the hydraulic damping system, the problems of high flow usage requirements and high structural compactness in the prior art are solved, and a combination valve with high degree of integration, good sealing and large overflow capability are achieved, and vibration resistance, impact resistance and bidirectional symmetric damping functions are provided.

CN113931964BActive Publication Date: 2025-04-01SICHUAN LINGFENG AVIATION HYDRAULIC MACHINERY
1 Cites 0 Cited by

Patent Information

Application Number
CN202111341761.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-11-12
Publication Date
2025-04-01
Estimated Expiration
2041-11-12

AI Technical Summary

Technical Problem

The safety valves and damping valves in existing hydraulic damping systems and hydraulic accessories have a single structure, which cannot meet the needs of large flow rates. The compactness and sealing requirements are high, making it prone to self-excitation and inconvenient parameter adjustment problems.

Method used

A two-way symmetric balanced damping safety control combination valve is adopted. The safety control combination valve and the downstream safety control combination valve are connected in parallel in the closed-loop circulation hydraulic circuit to form an equivalent matching bidirectional symmetric balanced damping safety control combination valve system, and the damping buffering function is achieved using the small-hole throttling principle, and the circulation of large flow oil is realized through the fan-shaped runner.

Benefits of technology

It realizes a combination valve with high integration, small size, compact structure, good sealing, large overcurrent capability and long service life. It has vibration resistance and impact resistance, can work smoothly under large speed operating conditions, and achieve bidirectional symmetric damping under high frequency and wide range working conditions, replacing the traditional single safety valve and damping valve.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention discloses a bidirectional symmetrical balanced damping safety control combination valve, which has a high degree of integration, a small volume and a compact structure. The invention is realized by the following technical scheme: in a closed-loop circulation hydraulic circuit of a controlled fluid channel, a safety control combination valve and a lower combination valve assembly are provided, which are interconnected and opposite to each other. In a free state, the conical valve chamber cooperates with the conical surface to be in a closed state, cutting off the control fluid source from the damping cylinder. The high-pressure fluid flows into the left chamber of the damping cylinder through a fan-shaped flow channel, and the other way flows through the fan-shaped flow channel on the valve seat of the safety control combination valve, opens the valve cone check valve, and flows to the right chamber of the damping cylinder, forming a compression spring to actuate and absorb external impact energy, thereby achieving pressure relief, and vice versa. The safety control combination valve and the downstream safety control combination valve are connected to each other through the hydraulic oil circuit of the spring seat inflection point groove in the valve cavity, and are combined into a double-valve combination linkage control valve at the rod cavity end, forming an equivalent matching bidirectional symmetrical balanced damping safety control combination valve system.
Need to check novelty before this filing date? Find Prior Art