The disclosure relates to a valve assembly and a method for controlling the air suspension level of a rail vehicle. A system is provided, which is constructionally simple to build and easy to parameterise, for controlling the air suspension level of a rail vehicle. The object of the disclosure is achieved by a valve assembly for controlling the air suspension level of a rail vehicle, comprising a proportional directional valve, a sensor means for continuously detecting a distance variable representing the distance of a carriage body from a chassis or bogie of the rail vehicle, and a digital control device, wherein the control device is designed to be programmable for determining a control deviation based on the actual distance detected by the sensor means and a comparison with a predefinable target distance, and for continuously generating control variables as a linear function of the determined control deviation and the carriage body travelling speed. The object is also achieved by a method for controlling the air suspension level of a rail vehicle with a proportional directional valve, a sensor means for continuously detecting a distance variable representing the distance of the carriage body from a chassis or bogie, and a digital control device, wherein a control deviation is determined by the control device based on a comparison of the actual distances detected by the sensor means with a predefinable target distance, and a control variable is generated continuously as a linear function of the determined control deviation and the carriage body travelling speed.

A bogie for a high-speed railway vehicle includes a wheel set, an axle box, a primary spring suspension device, a frame, a secondary spring suspension device and a foundation braking device. A wheel of the wheel set has an LMA wheel tread. The foundation braking device is mounted by a three-point hitch structure. The axle box is a structure which is separatable in a vertical direction, and an off-line safety protecting device is mounted at a lower portion of the axle box. A traction rod of the secondary spring suspension device is a single traction rod. A center pin is provided with an integral hoisting device. Two anti-yaw dampers, as a group, are arranged at either side of the secondary spring suspension device, and the two anti-yaw dampers have the same damping coefficient.

A bogie for a high-speed railway vehicle includes a wheel set, an axle box, a primary spring suspension device, a frame, a secondary spring suspension device and a foundation braking device. A wheel of the wheel set has an LMA wheel tread. The foundation braking device is mounted by a three-point hitch structure. The axle box is a structure which is separatable in a vertical direction, and an off-line safety protecting device is mounted at a lower portion of the axle box. A traction rod of the secondary spring suspension device is a single traction rod. A center pin is provided with an integral hoisting device. Two anti-yaw dampers, as a group, are arranged at either side of the secondary spring suspension device, and the two anti-yaw dampers have the same damping coefficient.

There is provided a railway vehicle vibration control apparatus that can reduce the amount of power consumed. A railway vehicle vibration control apparatus (1) of the present invention includes a first semi-active damper (D1) that functions as a semi-active damper under normal control and enters an unloaded state upon non-energization, and a second semi-active damper (D2) that functions as a semi-active damper under normal control and as a passive damper in a non-energized state or an actuator (A) that functions as an actuator under normal control and as a passive damper in the non-energized state.

There is provided an actuator control device and an actuator unit capable of returning to control of the actuator even when a power failure occurs. The actuator control device (C) of the present invention includes: a voltage sensor (40) that detects a voltage input to a drive circuit (D) that controls a motor (15) for driving an actuator (A), and a controller (41) that stops the motor (15) when the voltage detected by the voltage sensor (40) is equal to or less than a predetermined voltage threshold.

There is provided an actuator control device and an actuator unit capable of returning to control of the actuator even when a power failure occurs. The actuator control device (C) of the present invention includes: a voltage sensor (40) that detects a voltage input to a drive circuit (D) that controls a motor (15) for driving an actuator (A), and a controller (41) that stops the motor (15) when the voltage detected by the voltage sensor (40) is equal to or less than a predetermined voltage threshold.

The invention relates to a cross member for articulating a body of a rail vehicle to the bogie thereof; the upper face of the cross member is connected to the body, and a bogie pin-supporting plate comprising a bogie pin is secured to the lower face of the cross member with the aid of fastening means, the bogie pin being movably mounted in a bogie pin receptacle on the bogie in order to transmit pulling and braking forces.

The invention relates to a cross member for articulating a body of a rail vehicle to the bogie thereof; the upper face of the cross member is connected to the body, and a bogie pin-supporting plate comprising a bogie pin is secured to the lower face of the cross member with the aid of fastening means, the bogie pin being movably mounted in a bogie pin receptacle on the bogie in order to transmit pulling and braking forces.

A cylinder device includes a recess provided on either one of the piston and the cylinder, the recess facing the other one of the piston and the cylinder; an extension-side discharge passage configured to permit only a flow of liquid from the extension-side chamber toward the recess; a compression-side discharge passage configured to permit only a flow of liquid from the compression-side chamber toward the recess; a tank-side discharge passage configured to allow the extension-side discharge passage and the compression-side discharge passage to communicate with the tank through the recess; an extension-side damping force generation passage configured to apply a resistance to a flow of liquid passing therethrough so as to exert a damping force during extension; and a compression-side damping force generation passage configured to apply a resistance to a flow of liquid passing therethrough so as to exert a damping force during contraction.

A cylinder device includes a recess provided on either one of the piston and the cylinder, the recess facing the other one of the piston and the cylinder; an extension-side discharge passage configured to permit only a flow of liquid from the extension-side chamber toward the recess; a compression-side discharge passage configured to permit only a flow of liquid from the compression-side chamber toward the recess; a tank-side discharge passage configured to allow the extension-side discharge passage and the compression-side discharge passage to communicate with the tank through the recess; an extension-side damping force generation passage configured to apply a resistance to a flow of liquid passing therethrough so as to exert a damping force during extension; and a compression-side damping force generation passage configured to apply a resistance to a flow of liquid passing therethrough so as to exert a damping force during contraction.