Three-way valve based novel electric control energy storage hydraulic cylinder and control loop thereof

A technology of control circuit and hydraulic cylinder, which is applied in the direction of fluid pressure actuation device, fluid pressure actuation system components, servo motor components, etc., can solve the problems of unstable internal pressure, uncontrollable hydraulic oil, low energy recovery and utilization efficiency, etc. , to achieve the effect of reducing internal pressure loss and overcoming energy loss

CN113864255AInactive Publication Date: 2021-12-31CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY

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Patent Information

Authority / Receiving Office: CN · China
Current Assignee / Owner: CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
Publication Date: 2021-12-31
Estimated Expiration: Not applicable · inactive patent

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Abstract

The invention provides a three-way valve based novel electric control energy storage hydraulic cylinder and a control loop thereof. The novel electric control energy storage hydraulic cylinder comprises hydraulic cylinders, the control loop, an air bag, air cylinder pistons, electromagnetic valves and the like. Bottom air cylinders and the air bag are used as an energy storage unit, and hydraulic energy generated when the hydraulic cylinders retract is recycled according to the electromagnetic valve principle; and when the electromagnetic valves are powered on, stored hydraulic oil is released to assist an oil cylinder in extending outwards, and energy recycling is achieved. Energy losses caused by recycling by taking control valves as a principle are overcome, internal pressure losses are also greatly reduced, the flow direction of hydraulic oil is well in a controllable state, the three-way valve based novel electric control energy storage hydraulic cylinder can be directly applied to various kinds of hydraulic drive engineering application, and the energy efficiency of a hydraulic transmission system is improved.

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Description

technical field

[0001] The invention relates to a novel electronically controlled energy storage hydraulic cylinder based on a three-way valve and a control circuit thereof. Background technique

[0002] The hydraulic cylinder is a linear actuator in the hydraulic transmission system, mainly including: hydraulic cylinder piston, hydraulic cylinder piston rod, hydraulic cylinder body, hydraulic cylinder sealing cover and other parts.

[0003] Resource shortage and environmental pollution are increasingly pressing global issues, prompting the development of energy saving and emission reduction technologies. Hydraulic excavators are typical construction machinery with the characteristics of wide application, high energy consumption and low emission. Energy recovery and regeneration (ERR) technology and hybrid control technology are important energy-saving technologies in off-road machinery. core part. However, both the hydraulic cylinder and the accumulator are independent p...

Claims

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