The invention discloses an aerial work platform and a hydraulic control system thereof. A balance valve group comprises a parallel balance valve A, a first single balance valve, a first stop valve and a second single balance valve, wherein the first single balance valve and the first stop valve are arranged in a first internal oil way in a parallel connection mode, and the second single balance valve is arranged in a first bypass oil way; the first bypass oil way is connected to oil ports in the two ends of the first internal oil way in parallel. The parallel balance valve B comprises a third single balance valve, a second stop valve and a fourth single balance valve, the third single balance valve and the second stop valve are arranged in a second internal oil way in parallel, the fourth single balance valve is arranged in a second bypass oil way, and the second bypass oil way is connected to oil ports in the two ends of the second internal oil way in parallel; in the balance valve set, the first internal oil way and the second internal oil way are independent of each other, the control ratio of the second single balance valve is larger than that of the first single balance valve, and the control ratio of the third single balance valve is larger than that of the fourth single balance valve. By detecting the real-time position of the oil cylinder and selecting the single balance valve with the proper control ratio, the operation stability and low energy consumption of the oil cylinder can be considered.
本申请公开了一种高空作业平台及其液压控制系统,平衡阀组包括并联平衡阀A,包括并联设置在第一内部油路中的第一单平衡阀和第一截止阀以及设置在第一旁通油路中的第二单平衡阀,第一旁通油路并联连接于第一内部油路的两端油口;并联平衡阀B,包括并联设置在第二内部油路中的第三单平衡阀和第二截止阀以及设置在第二旁通油路中的第四单平衡阀,第二旁通油路并联连接于第二内部油路的两端油口;在平衡阀组内,第一内部油路和第二内部油路相互独立,第二单平衡阀的控制比大于第一单平衡阀的控制比,第三单平衡阀的控制比大于第四单平衡阀的控制比。本申请通过检测油缸实时位置,选择合适控制比的单平衡阀,可兼顾油缸运行稳定性和低能耗。
Balance valve group, oil cylinder control system and aerial work platform
平衡阀组、油缸控制系统和高空作业平台
2024-03-26
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 |
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