A method controls the height of a floor of a car of a vehicle relative to a platform. The car includes a body provided with a distance sensor, at least one bogie and at least one secondary suspension between the bogie and the body. The method includes measuring the distance between the distance sensor and the platform via the distance sensor, calculating the difference between the height of the platform and the height of the floor from the measured distance, and adjusting the height of the secondary suspension based on the difference.

A method controls the height of a floor of a car of a vehicle relative to a platform. The car includes a body provided with a distance sensor, at least one bogie and at least one secondary suspension between the bogie and the body. The method includes measuring the distance between the distance sensor and the platform via the distance sensor, calculating the difference between the height of the platform and the height of the floor from the measured distance, and adjusting the height of the secondary suspension based on the difference.

A level control system adjusting the level of a vehicle, in particular a rail vehicle, and includes at least one level control cylinder and a level control piston, which is at least partially movably accommodated in the level control cylinder. Accordingly, the level control piston may have a substantially continuous outer diameter.

A level control system adjusting the level of a vehicle, in particular a rail vehicle, and includes at least one level control cylinder and a level control piston, which is at least partially movably accommodated in the level control cylinder. Accordingly, the level control piston may have a substantially continuous outer diameter.

Disclosed is a rail vehicle including at least one car and at least one bogie carrying the car. The bogie includes a chassis and a secondary suspension system between the chassis and the car. The secondary suspension system includes a spring assembly mounted between the chassis and the car.The secondary suspension system includes a actuator, provided with a piston extending at least partially between an upper stop secured to the car and a lower stop secured to the chassis, and a supply device of the actuator.The supply device of the actuator is able to supply the actuator such that the distance between the upper and lower stops is kept constant by the actuator.

An abnormality detection method for a vehicle body tilt control device makes it possible to determine which air spring has an air supply/exhaust abnormality. A model creation step prepares a state estimation model for each of the front and rear vehicle halves into which a vehicle is divided, and an abnormality detection step applies a state estimation technique to the state estimation model to detect which one of the air springs has an air supply/exhaust abnormality. When flow rate command values for air supplied to/exhausted from the air springs included in each vehicle half are input, each of the input flow rate command values for air supplied to/exhausted from the air springs is multiplied by a virtual gain and the results are averaged. Based on the averages, the average of the heights of the air springs is output, where each virtual gain is included as a state variable.

An abnormality detection method for a vehicle body tilt control device makes it possible to determine which air spring has an air supply/exhaust abnormality. A model creation step prepares a state estimation model for each of the front and rear vehicle halves into which a vehicle is divided, and an abnormality detection step applies a state estimation technique to the state estimation model to detect which one of the air springs has an air supply/exhaust abnormality. When flow rate command values for air supplied to/exhausted from the air springs included in each vehicle half are input, each of the input flow rate command values for air supplied to/exhausted from the air springs is multiplied by a virtual gain and the results are averaged. Based on the averages, the average of the heights of the air springs is output, where each virtual gain is included as a state variable.

The present disclosure provides a bogie assembly and a straddle-type monorail vehicle with the same. The bogie assembly comprises: a bogie frame; an electric assembly which is mounted on the bogie frame and comprises a traction motor, a gear reducer and a planetary wheel-side reducer, wherein the traction motor is connected with an input shaft of the gear reducer, and an output shaft of the gear reducer is connected with an input end of the planetary wheel-side reducer; and a running wheel which is mounted on the bogie frame, wherein an output end of the planetary wheel-side reducer is connected with a hub of the running wheel.

The present disclosure provides a bogie assembly and a straddle-type monorail vehicle with the same. The bogie assembly comprises: a bogie frame; an electric assembly which is mounted on the bogie frame and comprises a traction motor, a gear reducer and a planetary wheel-side reducer, wherein the traction motor is connected with an input shaft of the gear reducer, and an output shaft of the gear reducer is connected with an input end of the planetary wheel-side reducer; and a running wheel which is mounted on the bogie frame, wherein an output end of the planetary wheel-side reducer is connected with a hub of the running wheel.

A traction rod assembly for a bogie system includes a body extending between first and second ends. A bush assembly is coupled with the first end and includes a first component having a passage, and a second component disposed within the passage of the first component. The bush assembly includes an eccentric offset such that a center of the first component is offset from a center of the second component. A bearing assembly is coupled with the second end of the body and includes cylindrical bearings and spacers that are concentric with a passage disposed at the second end of the body. The bush assembly is coupled with a frame of the bogie system and the bearing assembly is operably with an axle assembly of the bogie system. The bearing assembly allows rotation of the body relative to the axle assembly of the bogie system.