Subway and bogie thereof

Abstract

The invention discloses a subway and a bogie of the subway. The bogie comprises a frame of an H type structure, two wheel set axle boxes, driving devices, foundation braking devices, a brake pad, a primary suspension system, an auxiliary suspension system, a traction device, a rim lubricating device and a tread friction adjusting device. Each wheel set axle box comprises a wheel, an axle and an axle box body, and the axle box bodies are arranged on the frame. Each driving device comprises a traction motor and a gearbox, wherein the traction motor is rigidly suspended on the frame, and the gearbox is connected with the traction motor through a gear coupling in a transmission mode. Half of each gearbox is suspended on the corresponding axle, and the other half of each gearbox is suspended on the frame through a gearbox suspender. The wheel set axle boxes are connected with the frame through the primary suspension system, and the primary suspension system comprises four sets of multiply rubber springs. According to the arrangement, the bogie meets the requirement for the speed grade of 80 km / h, the maximum axle weight can reach 17 t, and the bogie can ensure that rim abrasion is small, and noise generated in wheel rail operation is low.

Description

technical field [0001] The invention relates to the technical field of railway vehicles, more specifically, to a subway and its bogie. Background technique [0002] Rail transit vehicles are widely used. The car body structure is mainly made of aluminum alloy and stainless steel, while the load-carrying car body structure is made of stainless steel. The weight of the car body is relatively large, so the bogie must consider weight reduction to adapt to the heavy car body . [0003] In the prior art, the axle load of the 80km / h speed class subway vehicle bogie at home and abroad, that is, the load on the axle is not more than 16 tons, generally adopts tread braking, and the subway vehicle bogie in the prior art has poor bearing capacity . In addition, if the axle load of the bogie of the subway car in the prior art is increased, the wear of the rim of the wheel will be relatively large, and the noise of the wheel and rail will be relatively large during operation. [0004] ...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the axle load of the 80km / h speed class subway vehicle bogie at home and abroad, that is, the load on the axle is not more than 16 tons, generally adopts tread braking, and the subway vehicle bogie in the prior art has poor bearing capacity

In addition, if the axle load of the subway vehicle bogie in the prior art is increased, the rim wear of the wheel will be relatively large, and the wheel-rail noise will be relatively large during operation.

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