The invention discloses an aerial work platform and a hydraulic control system thereof. The system comprises a telescopic oil cylinder and a main reversing valve. The one-way balance valve is arranged in the rod cavity working oil way, and a balance valve pilot oil way of the one-way balance valve is connected to the rodless cavity working oil way; the hydraulic control one-way valve is arranged in the rodless cavity working oil way, enables hydraulic oil to flow to the rodless cavity through the hydraulic control one-way valve and is reversely cut off, the hydraulic control one-way valve comprises a one-way valve pilot oil way used for reversely opening the one-way valve, and the one-way valve pilot oil way is connected to a rod cavity working oil way between the one-way balance valve and the main reversing valve; the oil cylinder is communicated with the oil way, the rodless cavity and the rod cavity are communicated, and a communication control valve used for controlling the on-off of the oil way is arranged in the communication oil way. According to the novel hydraulic balance valve, the pressure is detected through the pilot oil way in the balance valve, the flow is automatically adjusted, and the running speed of the hydraulic oil cylinder can be automatically controlled.
本申请公开了一种高空作业平台及其液压控制系统,系统包括伸缩油缸和主换向阀;单向平衡阀,设置在有杆腔工作油路中,单向平衡阀的平衡阀先导油路连接于无杆腔工作油路;液控单向阀,设置在无杆腔工作油路中并使得液压油能够通过液控单向阀流向无杆腔且反向截止,液控单向阀包括用于反向开启单向阀的单向阀先导油路,单向阀先导油路连接于单向平衡阀与主换向阀之间的有杆腔工作油路上;油缸连通油路,连通无杆腔与有杆腔并且连通油路中设有用于控制油路通断的连通控制阀。本申请通过使用新型的液压平衡阀,在平衡阀内部通过先导油路检测压力,完成自动调节流量,可自动控制液压油缸的运行速度。
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
Elektronische Ressource
Chinesisch
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 |
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