three-axle bogie

bogie is one of the most important parts in the structure of rail vehicles, and its main functions are as follows:

(1) The use of bogies on vehicles is to increase the load, length and volume of vehicles, and increase the speed of trains to meet the needs of the development of railway transportation;

(2) Ensure that the car body can be reliably located on the bogie under normal operating conditions, and the rolling of the wheels along the rail is converted into the translation of the car body along the line through the bearing device;

(3) Support the car body, bear and transmit various loads and forces from the car body to the wheels or from the wheel rails to the car body, and evenly distribute the axle weight.

(4) to ensure the safe operation of the vehicle, can flexibly run along the straight line and smoothly through the curve.

(5) The structure of the bogie should facilitate the installation of the spring damping device, so that it has good damping characteristics, so as to ease the interaction between the vehicle and the line, reduce vibration and impact, reduce dynamic stress, and improve the vehicle Running stability and safety.

(6) Make full use of the adhesion between the wheels and rails, transmit traction and braking force, and amplify the braking force generated by the brake cylinder, so that the vehicle has a good braking effect to ensure parking within the specified distance.

(7) The bogie is an independent part of the vehicle, and the coupling between the bogie and the vehicle body is minimized.