The invention relates to the technical field of active radial direction and active suspension of rail trains, in particular to a hydraulic actuator, which comprises an oil tank, a hydraulic controller and an executing mechanism; an output end of the oil tank is connected with a first one-way valve through pipelines; the end, away from the oil tank, of the first one-way valve is connected with a first two-position four-way electromagnetic valve and a second two-position four-way electromagnetic valve through pipelines; one output end of the first two-position four-way electromagnetic valve is connected with a first electromagnetic ball valve through pipelines; and an output end of the first electromagnetic ball valve is connected with a third one-way valve through pipelines. The hydraulic actuator provided by the invention has the beneficial effects that the hydraulic controller receives a control instruction issued by an upper computer and converts the control instruction into a control signal of a hydraulic power unit; and a hydraulic pump, a motor and a hydraulic valve are arranged in the hydraulic power unit, power can be provided for the executing mechanism, action of the executing mechanism is controlled through cooperation of a hydraulic valve, the executing mechanism responds to control of the hydraulic power unit, and the active control function is achieved.
本发明涉及轨道列车主动径向及主动悬挂技术领域,具体是一种液压致动器,包括油箱、液压控制器和执行机构,油箱的输出端通过管道连接有第一单向阀,且第一单向阀远离油箱的一端通过管道连接有第一二位四通电磁阀和第二二位四通电磁阀,第一二位四通电磁阀的其中一个输出端通过管道连接有第一电磁球阀,且第一电磁球阀的输出端通过管道连接有第三单向阀。本发明的有益效果为通过液压控制器接收上位机下发的控制指令并将其转化为液压动力单元的控制信号;液压动力单元内有液压泵、电机、液压阀,可以为执行机构提供动力并通过液压阀的配合控制执行机构的动作,执行机构响应液压动力单元的控制,实现主动控制功能。
Hydraulic actuator
一种液压致动器
2021-11-19
Patent
Electronic Resource
Chinese