The invention discloses a safety control system and method for an overhead working truck and the overhead working truck. The system comprises an oil tank, a hydraulic pump, a variable amplitude control valve group, a telescopic control valve group, a rotation control valve group, an arm support variable amplitude oil cylinder, an arm support telescopic oil cylinder, a rotary table rotation motor, a three-way flow valve, a first unloading valve, a hydraulic detection module, an arm support variable amplitude detection module, an arm support telescopic detection module and a control module. According to the safety control system for the overhead working truck, once the pressure exceeds the standard due to the fault of the hydraulic pump or the action of a cantilever crane is triggered by mistake due to the fault of the control valve group, the hydraulic pump is controlled to be closed so that pressure cannot be built at the oil port of the executing mechanism, and meanwhile, the first unloading valve is controlled to be closed to timely discharge the flow in the system; the situation that the action of the vehicle is not controlled when the reversing valve or the oil source breaks down or is abnormal is effectively prevented, and the construction safety of workers is guaranteed.
本发明公开了一种高空作业车用安全控制系统、方法及高空作业车,系统包括油箱、液压泵、变幅控制阀组、伸缩控制阀组、回转控制阀组、臂架变幅油缸、臂架伸缩油缸、转台回转马达、三通流量阀、第一卸荷阀、液压检测模块、臂架变幅检测模块、臂架伸缩检测模块、控制模块。对于本发明实施例的高空作业车用安全控制系统,一旦出现液压泵故障导致压力超标或控制阀组故障导致误触发臂架动作,则控制关闭液压泵以使得执行机构油口处无法建压,同时控制关闭第一卸荷阀来及时卸掉系统中的流量,有效地防止了当换向阀或油源出现故障或异常时所导致车辆动作不受控的情况发生,保障了工作人员的施工安全。
Safety control system and method for overhead working truck and overhead working truck
一种高空作业车用安全控制系统、方法及高空作业车
2023-06-23
Patent
Elektronische Ressource
Chinesisch
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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