The invention discloses an internal expansion type mechanical locking hydraulic supporting leg based on EHA and an operation method of the internal expansion type mechanical locking hydraulic supporting leg. Comprising an EHA driving assembly and a hydraulic supporting leg assembly. The EHA driving assembly is integrated on the upper portion of the supporting leg, and the working principle of pressure loss self-locking and internal expansion unlocking under the condition that no external oil supply exists can be achieved. Through control over an EHA driving system, when high-pressure oil is input into an upper cavity oil guide pipe, the logic relation that the unlocking pressure p1 of a spiral groove is equal to the minimum opening pressure p2 of an external control sequence valve, is smaller than or equal to the load pressure p3 of an upper cavity of an oil cylinder and is smaller than the set overflow opening pressure p4 of an overflow valve is formed, and the function that the supporting leg oil cylinder is unlocked firstly and then stretched is guaranteed; when high-pressure oil is input into the lower cavity oil guide pipe, the logic relation that the unlocking pressure p1 of the spiral groove is equal to the minimum opening pressure p5 of the external control sequence valve, is smaller than or equal to the energy storage pressure p6 of the energy accumulator and is smaller than the set overflow opening pressure p7 of the overflow valve is formed, and the function that the supporting leg oil cylinder is unlocked firstly and then retracts is guaranteed.
本发明公开了一种基于EHA的内胀式机械锁紧液压支腿及其运行方法;包括EHA驱动组件和液压支腿组件;EHA驱动组件集成在支腿的上部,可实现无外部供油条件下失压自锁、内胀解锁的工作原理。通过对EHA驱动系统的控制,可在上腔导油管输入高压油时,形成螺旋槽解锁压力p1=外控顺序阀最低开启压力p2≤油缸上腔负载压力p3<溢流阀设定溢流开启压力p4的逻辑关系,保证支腿油缸先解锁、后伸长的功能;也可在下腔导油管输入高压油时,形成螺旋槽解锁压力p1=外控顺序阀最低开启压力p5≤蓄能器蓄能压力p6<溢流阀设定溢流开启压力p7的逻辑关系,保证支腿油缸先解锁、后回缩的功能。
Internal expansion type mechanical locking hydraulic supporting leg based on EHA and operation method of internal expansion type mechanical locking hydraulic supporting leg
一种基于EHA的内胀式机械锁紧液压支腿及其运行方法
2025-05-13
Patent
Electronic Resource
Chinese
IPC: | B60S SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR , Warten, Reinigen, Instandsetzen, Unterstützen, Anheben oder Rangieren von Fahrzeugen, soweit nicht anderweitig vorgesehen |
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