The invention relates to a rescue carriage winch operation hydraulic system which comprises a self-rescue winch, a dragging and rescuing winch, a control valve set, a load-sensitive multi-way valve and a load-sensitive variable displacement piston pump, the self-rescue winch and the dragging and rescuing winch are connected with the load-sensitive variable displacement piston pump, and the load-sensitive variable displacement piston pump supplies oil to the self-rescue winch and the dragging and rescuing winch. One end of the load-sensitive multi-way valve is connected with the load-sensitive variable plunger pump, the other end of the load-sensitive multi-way valve is connected with the self-rescue winch and the dragging and rescuing winch, and independent operation of the self-rescue winch or the dragging and rescuing winch is controlled by controlling the load-sensitive multi-way valve; the control valve group is mounted among the load-sensitive multi-way valve, the self-rescue winch and the dragging and rescuing winch, an oil path of the self-rescue winch and an oil path of the dragging and rescuing winch are communicated through the control valve group, and then control during combined operation of the self-rescue winch and the dragging and rescuing winch is achieved by controlling the opening degree of the load-sensitive multi-way valve. The independent or combined operation state of the two winches on the rescue vehicle can be switched according to actual needs, and sufficient hydraulic driving force is provided for the two winches.
本发明涉及一种抢救车绞盘作业液压系统,包括自救绞盘、拖救绞盘、控制阀组、负载敏感多路阀和负载敏感变量柱塞泵,自救绞盘和拖救绞盘与负载敏感变量柱塞泵连接,由负载敏感变量柱塞泵为自救绞盘和拖救绞盘供油,并接收系统的回油,负载敏感多路阀一端与负载敏感变量柱塞泵连接,另一端与自救绞盘、拖救绞盘连接,通过分别控制负载敏感多路阀实现自救绞盘或拖救绞盘独立作业的控制;控制阀组安装在负载敏感多路阀与自救绞盘及拖救绞盘之间,通过控制阀组将自救绞盘和拖救绞盘的油路导通,进而通过控制负载敏感多路阀的开度以实现自救绞盘和拖救绞盘联合作业时的控制。本发明能够根据实际需要切换抢救车上两个绞盘独立或联合作业的状态,并为其提供充足的液压驱动力。
Rescue carriage winch operation hydraulic system
抢救车绞盘作业液压系统
2022-05-06
Patent
Electronic Resource
Chinese