Flexible axle boxes and assembling method thereof, and bogie

Abstract

The invention discloses flexible axle boxes and an assembling method thereof, and a bogie. The bogie comprises two sets of wheel pairs; the flexible axle boxes are symmetrically arranged on the two sides of each set of wheel pair; each flexible axle box comprises a flexible axle box body, side beam compositions are arranged on the two flexible axle box bodies on the same sides, and cross beam compositions perpendicular to the side beam compositions are arranged between the side beam compositions on the two sides; the two ends of the cross beam compositions are arranged in the middles of the side beam compositions through central damping suspension devices; X-shaped connecting rods are arranged below the cross beam compositions; and the two axial ends of the X-shaped connecting rods penetrate through webs on the two sides of the cross beam compositions correspondingly to be fixedly connected with the side beam compositions. According to the flexible axle boxes and the assembling methodthereof, and the bogie, the X-shaped connecting rods are arranged below the cross beam compositions, the two axial ends of the X-shaped connecting rods penetrate through webs on the two sides of the cross beam compositions correspondingly to be fixedly connected with the side beam compositions, and in the running process of a vehicle, the X-shaped connecting rods can effectively control mutual movement of the two side beam compositions on the left and the right, thus the purpose of inhibiting hunting movement of the bogie is achieved, and the instability critical speed of hunting movement is increased.

Description

technical field [0001] The invention relates to the technical field of bogies, in particular to a flexible axle box, an assembly method thereof, and a bogie. Background technique [0002] A railway vehicle is a vehicle that runs on a specially designed track. The railway vehicle bogie supports the weight of the entire cargo and the weight of the car body itself, runs along the specially designed track, and guides itself without controlling the direction. The bogie is an important part of a railway vehicle. Most railway freight car bogies are mainly three-piece structure including two side beams and a cross beam. The advantages of the three-piece bogie are simple structure, good wheel load uniformity, and low manufacturing and maintenance costs. However, because the device connection between the wheel set and the side beam is too loose or too tight, it is not conducive to the positioning of the wheel set, which is easy to cause the instability of the wheel set, and because ...

AI Technical Summary

Problems solved by technology

Anyone with a little knowledge of vehicles knows that the critical running speed of vehicles in a straight line and the performance of vehicles passing through curves are a pair of contradictions, and it is often difficult to balance them in bogie design.

[0005] However, the existing axle box suspension devices generally adopt rigid positioning or one-level longitudinal rigidity positioning in the longitudinal direction. The rigid positioning between the bearing saddle and the side beam pedestal is dry friction, and the friction force increases linearly, which cannot adapt to high-speed operation. The wheel-rail lateral force is relatively large, which increases the risk of train derailment; some bogie schemes achieve elastic positioning, but the number of accessories is large. Due to structural limitations, the installation method is cumbersome and the effect is limited. The performance requirements of the vehicle passing through the curve greatly reduce the effect of the elastic suspension of the axle box

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