The invention discloses an integrated valve block of a hydraulic system, the hydraulic system and a forklift. The integrated valve block comprises a steering priority valve, a sequence control valve, a prefill valve and an electromagnetic valve. The hydraulic oil inlet is respectively communicated with an inlet of the steering priority valve and an inlet of the sequence control valve; a feedback port of the steering gear is respectively connected with a control port of the steering priority valve, a control port of the sequence control valve and a control port of the prefill valve; an output port of the steering priority valve is communicated with an oil supply port of the steering gear; an outlet of the sequence control valve is respectively communicated with an inlet of the prefill valve and an oil supply port of the multi-way valve; a pressurizing opening of the energy accumulator is respectively communicated with an outlet of the prefill valve and an inlet of the electromagnetic valve; and an outlet of the electromagnetic valve is communicated with the parking braking oil supply port. The priority valve, the prefill valve, the electromagnetic valve and the pressure reducing valve are integrated on one valve block, so that the space required by installation is greatly reduced, pipeline connection and leakage points are reduced, and meanwhile, detection and maintenance are facilitated.
本发明公开了一种液压系统的集成阀块、液压系统及叉车,包括:转向优先阀、顺序控制阀、充液阀和电磁阀;液压油进油口与转向优先阀的进口和顺序控制阀的进口分别相连通;转向器反馈口与转向优先阀的控制口、顺序控制阀的控制口和充液阀的控制口分别相连接;转向优先阀的输出口与转向器供油口相连通;顺序控制阀的出口与充液阀的进口和多路阀供油口分别相连通;蓄能器充压口与充液阀的出口和电磁阀的进口分别相连通;电磁阀的出口与驻车制动供油口相连通。本发明通过把优先阀、充液阀、电磁阀和减压阀集成到一个阀块上,极大地缩小了安装所需空间,减少了管路连接和泄露点,同时方便检测和维修。
Integrated valve block of hydraulic system, hydraulic system and forklift
一种液压系统的集成阀块、液压系统及叉车
2023-04-21
Patent
Electronic Resource
Chinese
IPC: | F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein / 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 |
Forklift and integrated hydraulic control system thereof
European Patent Office | 2022
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