VEHICLE BODY TILTING DEVICE FOR RAILROAD VEHICLE

摘要

A vehicle body tilting device for a railway vehicle includes a telescopic hydraulic actuator (A) interposed between a vehicle body (D) and a bogie (W). The device includes an actuator circuit (5) that drives the actuator (A), and a damping and locking circuit (13) that damps elongation/contraction of the hydraulic actuator (A) caused by an external force. The damping and locking circuit (13) includes a shutoff mechanism (17, 18, 19, 43) that shuts off a flow of working fluid accompanying the elongation/contraction of the hydraulic actuator (A). By selectively applying the actuator circuit (5) and the damping and locking circuit (13) and operating the shutoff mechanism (17, 18, 19, 43), the vehicle body tilting device functions as an actuator that tilts the vehicle body, a damper that absorbs vibration of and impacts to the vehicle body, and an inhibiting cylinder that prevents the vehicle body from tilting.