High-braking-performance truck wheel set and design method thereof

Abstract

The invention discloses a high-braking-performance truck wheel set and a design method thereof.The wheel set comprises an axle, wheels and axle boxes, the ends of the axle are provided with shaft necks and wheel seats, the wheels are arranged on the wheel seats, the axle boxes correspond to the shaft necks, the axle boxes are located on the outer sides of the wheels, bearings are arranged in the axle boxes, and the shaft necks are sleeved with the bearings; the bearing assembly further comprises a locking nut and a bearing check ring, the bearing check ring is arranged on the shaft neck in a sleeving mode to position the outer side of the bearing, bearing positioning threads matched with internal threads of the locking nut are arranged on the outer edge of the end of the shaft neck, and the inner side of the locking nut is attached to the outer side of the bearing check ring. The outer end face of the locking nut is connected with the end face of the axle through a fastening structure. The axle box suspension technology that the axle end nut locks the bearing is adopted, the locking torque of the end of the wheel set is large, the axial movement caused by insufficient locking force of the wheel set bearing is greatly improved, the axial displacement of the rim is small, and stability and reliability are achieved; the assembly is easy, and the wheel set assembly qualification rate is up to 99.5%.

Description

technical field [0001] The invention relates to the technical field of railways, in particular to a high braking performance freight wheel set and a design method thereof. Background technique [0002] The wheel set is an important part of the vehicle running parts that is in direct contact with the track. It is composed of two wheels that are press-fitted on the same axle through interference fit. Its function is to ensure the smooth running and steering of the vehicle on the track. By carrying all the dynamic load and static load of the vehicle, and transmitting it to the rail track, and at the same time transmitting the load caused by the unevenness of the rail track under different working conditions to other parts of the vehicle in time, the braking of the vehicle is also by wheelset. [0003] The wheel set is mainly composed of three parts: the axle, the wheel and the axle box structure. The axle refers to the cylindrical structure assembled in the hub hole of the whe...

AI Technical Summary

Problems solved by technology

[0005] The structure of the end of the existing freight wheel pair is complex and unreasonable. The bearing of the wheel set is directly fixed by the shaft end cover, and the locking torque is small. service life; and the assembly is cumbersome, and the qualified rate of wheel set assembly is low

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