The invention relates to a hydraulic system for realizing energy recovery in a main and auxiliary simultaneous double-lifting forklift, comprising: a hydraulic drive assembly comprising a gear pump, when oil is fed, power supply electric energy drives the gear pump to rotate forward as a hydraulic pump to supply oil to the system, and when oil is returned, oil return potential energy drives the gear pump to rotate backward as a hydraulic motor to convert potential energy into electric energy for recovery; according to the oil supply oil way, the oil way is at least divided into a first oil supply oil way body and a second oil supply oil way body through the flow dividing control valve, and the first oil supply oil way body and the second oil supply oil way body control the lifting action of the main execution assembly and the auxiliary execution assembly respectively. The oil return oil way comprises a first oil return oil way and a second oil return oil way, at least one oil return oil way is connected with the gear pump through the pilot-operated sequence valve, and oil flows back into the oil tank through the gear pump and drives the gear pump to rotate. According to the invention, the function of synchronous lifting of main and auxiliary lifting is realized, energy recovery is realized, and the operating requirement for long endurance is met while the working efficiency is improved.
本发明涉及一种主副同时双起升叉车中实现能量回收的液压系统,包括:液压驱动组件,包括齿轮泵,在进油时,供电电能驱动齿轮泵正转作为液压泵为系统供油,在回油时,回油势能带动齿轮泵反转作为液压马达将势能转化为电能回收;供油油路,包括:流量分流控制阀将油路至少分为第一供油油路和第二供油油路,第一供油油路和第二供油油路分别控制主副执行组件的起升动作;回油油路,包括:第一回油油路和第二回油油路,其中至少有一回油油路通过先导式顺序阀与齿轮泵连接,油液经过齿轮泵回流到油箱中,并带动齿轮泵转动。本发明既满足主副起升同步升降的功能,又实现了能量的回收,在提高了工作效率的同时,满足了对长续航的使用要求。
Hydraulic system for realizing energy recovery in main and auxiliary simultaneous double-lifting forklift
一种主副同时双起升叉车中实现能量回收的液压系统
2024-03-29
Patent
Electronic Resource
Chinese
IPC: | B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein / H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES |