Flexible bogies for rail vehicles

Abstract

The invention relates to a railway vehicle flexible bogie, wherein the middle of a left side frame and a right side frame are fixedly connected in an integral mode through a flexible crossbeam formed by four steel plates; gaps are reserved between the four steel plates; the left side frame and the right side frame are respectively provided with an elastic bumper block in a mounted mode; and a rubber pad which is used as single stage suspension is arranged between each elastic bumper block and a shaft housing. According to the railway vehicle flexible bogie, flexibility of a framework is achieved, the left side frame and the right side frame can easily nod relatively so that the framework can be adapted to a triangle pit with big railways; thus flexibility of the framework is achieved, the single stage suspension is a thin layer of rubber pad, production cost is reduced, and the railway vehicle flexible bogie is well adapted to unsmooth lines.

Description

technical field [0001] The invention relates to a rail vehicle flexible bogie, belonging to the technical field of rail vehicle bogies. Background technique [0002] Traditional bogies generally use H-shaped frames, rigid beams, and rely on a series of vertical flexible suspensions to overcome the twisting and unevenness of the line. When the wheelset travels to a gentle curve, due to the superelevation of the curved track, the rigid frame locally bears a large torque effect, and when the vehicle speed is high, the connection between the frame and a series of vertically flexible suspensions will also receive a large impact force; in the structural design of the traditional bogie, the motor is installed on the frame, in order to allow the motor and the wheel The dynamic disturbance and transfer torque between the bogies need to be equipped with complicated mechanisms such as couplings and gear boxes. It is difficult to significantly improve performance indicators such as per...

AI Technical Summary

Problems solved by technology

It can be seen that the comparison document realizes the flexibility of the bogie through the rubber joints at the hinges. Different rubber joints are designed according to the bogies of different models. This structure uses rubber joints to realize the torsion. Due to temperature changes, the performance parameters of the rubber joints often differ greatly from the design values. At the same time, the rubber is prone to aging and cracking, with poor reliability and relatively short service life.

Moreover, the motor is still installed on the bogie, and the wheelbase has a large wheelbase, which fails to significantly improve the performance of the bogie

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