A special confluence valve for an electrically controlled lorry-mounted crane comprises a confluence valve, the two sides of the confluence valve are connected with two sets of working units respectively, a hydraulic control reversing valve is arranged in the confluence valve, the two sides of the hydraulic control reversing valve are connected with oil inlet paths and pilot oil paths of the two sets of working units respectively, and the hydraulic control end of the hydraulic control reversing valve is connected with a shuttle valve II. The two oil inlet ends of the shuttle valve II are connected with an electromagnetic reversing valve and a compensation valve element valve rear oil way of a set of working units respectively, oil at the input end of the electromagnetic reversing valve is provided by the shuttle valve I, and the two input ends of the shuttle valve I are connected to the oil inlet ways on the two sides of the hydraulic control reversing valve respectively. The two working units are connected through the confluence valve, under the action of the confluence valve, judgment is automatically made according to the pressure of pressure oil of the two working units, on-off of the electromagnetic valves in the confluence valve is controlled according to needs, hydraulic pumps of the two working units converge into one working unit to supply oil, a control oil way is simplified, and the working efficiency is improved. And the oil pumping risk caused by the shuttle valve is avoided.
一种电控随车起重机合流专用阀,包括合流阀,合流阀的两侧分别连接有两组工作联,合流阀内设有液控换向阀,液控换向阀的两侧分别连接有两组工作联的进油路和先导油路,液控换向阀的液控端连接有梭阀Ⅱ,梭阀Ⅱ的两个进油端分别连接有电磁换向阀和一组工作联的补偿阀芯阀后油路,电磁换向阀输入端油液由梭阀Ⅰ提供,梭阀Ⅰ的两个输入端分别连接在液控换向阀两侧的进油路上。本发明通过合流阀连接两组工作联,在合流阀的作用下,由两组工作联的压力油压力的大小自动做出判断,并根据需要控制合流阀内电磁阀的通断,实现两组工作联的液压泵合流为一组工作联供油,不仅简化了控制油路,避免了梭阀带来的窜油风险。
Special confluence valve for electric control lorry-mounted crane
一种电控随车起重机合流专用阀
2025-04-15
Patent
Electronic Resource
Chinese
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