The invention provides a hydraulic system of a bolt type lifting device. The hydraulic system comprises a first pump set and a first control valve set, the first control valve set is connected with a rod cavity of the first set of jacking oil cylinders and a rod cavity of the second set of jacking oil cylinders, and a rodless cavity of the first set of jacking oil cylinders is connected with a rodless cavity of the second set of jacking oil cylinders. The first control valve group is configured to supply oil to a rod cavity of the first group of jacking oil cylinders so as to drive the first group of jacking oil cylinders to retract and drive the second group of jacking oil cylinders to extend at the same time, and oil in a rod cavity of the second group of jacking oil cylinders flows back to the first pump group, or oil in a rod cavity of the second group of jacking oil cylinders flows back to the second pump group; oil is supplied to a rod cavity of the second group of jacking oil cylinders so as to drive the second group of jacking oil cylinders to retract and drive the first group of jacking oil cylinders to extend at the same time, and oil in a rod cavity of the first group of jacking oil cylinders flows back to the first pump set. The control precision of the hydraulic system can be improved.
本公开提供了一种插销式升降装置的液压系统。所述液压系统包括第一泵组和第一控制阀组,所述第一控制阀组分别与所述第一组顶升油缸的有杆腔以及所述第二组顶升油缸的有杆腔相连,且第一组顶升油缸的无杆腔以及所述第二组顶升油缸的无杆腔相连;第一控制阀组被配置为:向所述第一组顶升油缸的有杆腔供油以驱动所述第一组顶升油缸回缩同时驱动所述第二组顶升油缸伸长,以及将所述第二组顶升油缸的有杆腔的油液回流到所述第一泵组中,或者,向所述第二组顶升油缸的有杆腔供油以驱动所述第二组顶升油缸回缩同时驱动所述第一组顶升油缸伸长,以及将所述第一组顶升油缸的有杆腔的油液回流到所述第一泵组中。本公开可以提高液压系统的控制精度。
Hydraulic system of bolt type lifting device
插销式升降装置的液压系统
2024-11-12
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 |
Automatic lubricating oil distribution device of hydraulic bolt lifting system
European Patent Office | 2020
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