The hydraulic control system comprises a shared flow unloading valve, a fly boom control valve and a platform control valve, the fly boom control valve and the platform control valve are arranged in parallel, the shared flow unloading valve comprises a first hydraulic control end and a second hydraulic control end, and the first hydraulic control end and the second hydraulic control end are used for controlling the opening degree of a valve port. A fly boom valve LS oil port of the fly boom control valve and a platform valve LS oil port of the platform control valve are communicated with each other and connected to the first hydraulic control end, and oil inlets of the fly boom control valve and the platform control valve are connected to the second hydraulic control end. According to the aerial work platform and the hydraulic control system thereof, the functional pump can adjust the output pressure and flow according to the fly jib and the platform load, and load sensitive control is achieved. The platform control valve and the fly boom control valve share one flow unloading valve, so that the use of valves is reduced, the hydraulic principle is simplified, and the cost is saved. The stop valves are respectively arranged in the two control valves, so that when the valve core is blocked, the action of the control valve can be cut off, but the action of the other control valve is not influenced, and the safety is improved.
本申请公开了一种高空作业平台及其液压控制系统,液压控制系统包括共用流量卸荷阀以及并联设置的飞臂控制阀和平台控制阀,共用流量卸荷阀包括用于控制阀口开度的第一液控端和第二液控端,飞臂控制阀的飞臂阀LS油口与平台控制阀的平台阀LS油口彼此连通并连接至所述第一液控端,飞臂控制阀和平台控制阀的进油口连接至第二液控端。在本申请的高空作业平台及其液压控制系统中,功能泵可根据飞臂和平台负载调节输出压力和流量,实现负载敏感控制。平台控制阀和飞臂控制阀共用一个流量卸荷阀,减少阀件的使用,也简化了液压原理,节省了成本。在两个控制阀内分别设置截止阀,可在阀芯卡滞时,切断该控制阀动作,但不影响另一控制阀动作,提高安全性。
Aerial work platform and hydraulic control system thereof
高空作业平台及其液压控制系统
2024-03-26
Patent
Electronic Resource
Chinese
IPC: | F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein / B66C Krane , CRANES / 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 |
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