The invention relates to the technical field of lifting machines, and discloses a hydraulic control system for a lifting machine. The hydraulic control system for the lifting machine comprises an oiltank, a main hydraulic cylinder and an auxiliary hydraulic cylinder, wherein the main hydraulic cylinder comprises a first cylinder body, a first piston rod and a first piston; the auxiliary hydrauliccylinder comprises a second cylinder body and a second piston rod; a direction control valve is arranged on the first piston in a penetrating mode; the triggering end of the direction control valve faces the bottom of the first cylinder body; the triggering end of the direction control valve is arranged on the outer side of the first piston; an oil passing groove is formed in the inner side wallof the top of the first cylinder body; the diameter of the oil passing groove is larger than the diameter of the first piston; and when the first piston moves to the highest point, a sealing ring of the first piston is located in the oil passing groove. The invention provides the hydraulic control system for the lifting machine, so that the purposes of automatically supplementing oil for the auxiliary hydraulic cylinder and automatically discharging oil are achieved.
本发明涉及举升机技术领域,公开了一种用于举升机的液压控制系统,其包括油箱、主液压缸和副液压缸,主液压缸包括第一缸体、第一活塞杆和第一活塞;副液压缸包括第二缸体和第二活塞杆;其中,第一活塞贯穿设置有方向控制阀,方向控制阀的触发端朝向第一缸体的底部设置,且方向控制阀的触发端设于第一活塞的外侧;第一缸体的顶部的内侧壁设有通油槽,通油槽的直径大于第一活塞的直径,当第一活塞移动至最高点时,第一活塞的密封圈位于通油槽内。本发明提供了一种用于举升机的液压控制系统,以达到能为副液压缸自动补油和自动卸油的目的。
Hydraulic control system for lifting machine
一种用于举升机的液压控制系统
2021-02-26
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 |
Lifting mechanism, lifting hydraulic system, control method and transfer machine thereof
European Patent Office | 2023
|European Patent Office | 2023
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