Railway vehicle bogie

Abstract

The invention discloses a railway vehicle bogie. The bogie is arranged in an internal axle box manner, and frameworks are supported on the inner sides of wheel sets, so the axle length is effectivelyshortened, the unsprung mass and dead weight of the bogie are reduced, and the curve passing performance is improved; the arrangement of downward concave sections of side beams and the connection of cross beams to the downward concave sections can effectively reduce the height of the gravity center of the bogie and reserve a high longitudinal space for a vehicle body, and web plates and cover plates can be adopted to enhance the strength of the side beams and improve the bearing capacity of the side beams; two primary positioning components are adopted for positioning, so that the axle distance of the bogie can be further reduced; and a secondary suspension device is additionally arranged to improve the vertical and transverse performances of the bogie and increase the running speed of thebogie, and secondary spring sets are arranged in a centralized mode to reduce torsional deformation of the secondary spring assemblies. The bogie is compact and reasonable in structural arrangement,reliable in performances and beneficial to improving the running stability, stability and running speed of a vehicle.

Description

technical field [0001] The invention relates to the technical field of bogies, in particular to a railway vehicle bogie. Background technique [0002] The bogies of most existing railway freight cars still use the traditional three-piece bogie. Generally, the three-piece bogie has only one suspension device, and the anti-diamond stiffness is small. In addition, the unsprung mass is large, and its running speed is not fast. high. According to the arrangement of the axlebox on the outside and inside of the wheel set, the bogie can be divided into an outer axlebox bogie and an inner axlebox bogie. The inner axle box bogie has the advantages of small dead weight, low unsprung mass, low wheel-rail dynamic force, low traction energy consumption and low noise, which can better meet the economic and structural requirements of railway vehicles. [0003] But at present, China's railways actually do not have trucks with axle box built-in bogies operating at speeds exceeding 200km / h. ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the above-mentioned deficiencies in the structure design of bogies in the prior art that are not conducive to reducing the self-weight and unsprung mass, resulting in bulky structure, high quality, high operation and maintenance costs, and difficulty in improving the operating speed. , providing a railway vehicle bogie

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