A lateral and longitudinal stiffness adjustment method and structure of a primary suspension device

Abstract

The invention discloses a transverse and longitudinal rigidity adjusting method and structure of a primary suspension device. The primary suspension device comprises a base, a top plate, conical springs and a limiting stopper; cavities are formed in the conical springs; and the two conical springs are arranged between the base and the top plate side by side in the longitudinal direction. A limiting stopper is arranged in the cavity of each conical spring; the lower end of the limiting stopper is connected with the base; an axle box seat is arranged on an axle box, the base is installed in theaxle box seat, a stop hole is formed in the lower end of a bogie, the upper end of each conical spring further penetrates through the top plate to extend into the stop hole of the bogie, and when thebogie moves relative to the axle box in the transverse direction or the longitudinal direction and the limiting stop abuts against the inner sides of the conical springs, the primary suspension devicecan generate variable rigidity. According to the invention, the capacity of a vehicle for passing through a small-curvature-radius curve can be remarkably improved, the primary suspension space is greatly saved, and the weight of the bogie is reduced.

Description

technical field [0001] The invention relates to the field of rail vehicles, in particular to a method and structure for adjusting the stiffness in the transverse direction and the longitudinal direction of a primary suspension device. Background technique [0002] The axlebox built-in bogie is a railway vehicle bogie with the axlebox placed inside the wheel set. This type of bogie effectively reduces the size of the frame space. The minimum curve passing radius of this type of bogie is significantly smaller than that of ordinary bogies. The turning maneuverability and flexibility of this type of bogie are greatly improved. In addition, this type of bogie also satisfies the lightweight design requirements of the bogie to the greatest extent. In order to adapt to the mountainous and curved geographical environment of some European countries, the vehicle often needs to make small turns during driving, which requires the vehicle to have a strong ability to pass through a small ...

AI Technical Summary

Problems solved by technology

[0003] However, the existing primary suspension devices are all arranged on both sides of the axle box. When the vehicle turns with a small curvature, the rotation angle of the bogie will be restricted by the primary suspension devices on both sides of the axle box, so it is difficult to adapt to multiple The geographical environment of some European countries with mountains and many curves

[0004] If the existing conical springs are directly arranged above the axle box, although small curvature turning can be well realized, but because the space above the axle box is extremely limited, especially the space in the lateral direction is very tight, the primary suspension device realizes Various complex technical requirements are difficult

The stiffness of the conical spring in the vertical, horizontal, and longitudinal directions will be too small, and it is difficult to meet the actual requirements for the stiffness of the vehicle, and there will be safety hazards in the vehicle.

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