Axle box suspension device, bogie and railway wagon

Abstract

The invention discloses an axle box suspension device, a bogie and a railway wagon. The axle box suspension device comprises an axle box, guide frames and springs, wherein the guide frames are located on two sides of the axle box, the axle box is provided with spring bearing parts, and the springs are located between the guide frames and the spring bearing parts; two swing blocks and a spring damping gear are arranged between at least one guide frame and the spring; the two swing blocks are distributed side by side at intervals in the direction parallel to the axis of the axle box, an upper end of each swing block is matched with the guide frame in a rotatable mode, a lower end of each swing block is matched with the spring damping gear in a rotatable mode, and the swing blocks are obliquely arranged; an included angle is formed between the shaft box and the vertical direction, and a lower end deviates to the axle box; and a first friction surface of the spring damping gear and a second friction surface of the axle box form a friction pair capable of moving relatively. The device can improve dynamic performance of the vehicle and ensure that the dynamic performance of the vehicle is continuous and stable.

Description

technical field [0001] The invention relates to the technical field of rail vehicles, in particular to an axle box suspension device for railway freight cars. The invention also relates to a bogie provided with the axle box suspension device, and a railway freight car provided with the bogie. Background technique [0002] A railway freight car generally includes a car body, a bogie, a brake device, a coupler buffer device, etc. The function of the bogie is to support the car body, guide the vehicle along the track, and bear various loads from the car body and the line. Therefore, the bogie is an important part of the railway freight car and the core component that affects the dynamic performance of the vehicle. [0003] There are two types of railway freight car bogies: welded frame bogie and cast steel three-piece bogie. The welded frame bogie is mainly composed of frame, foundation braking device, axle box suspension vibration damping device and elastic side bearing, etc....

AI Technical Summary

Problems solved by technology

[0006] 1) The lifting ring 3' is installed on the cantilever shaft, and the cantilever shaft is a welded structure, the structural force is not ideal, and the manufacturability and reliability are poor

[0007] 2) After the friction surface that cooperates with the axle box 4' is worn, the angle of the lifting ring 3' becomes smaller, which will lead to a decrease in vibration damping performance

[0008] 3) After the suspension ring 3' and the cantilever shaft are worn out, the angle of the suspension ring 3' becomes smaller, which will also lead to a decrease in vibration damping performance

[0009] 4) The structure is complex, the number of parts is too large, and the manufacturing is difficult

Images