Stress diffusion roller

Abstract

The invention relates to a stress diffusion roller. The stress diffusion roller comprises a rolling shaft, wherein limiting plates are arranged at the two ends of the rolling shaft, a supporting column is arranged in the middle of the rolling shaft, bearings are arranged at the positions, at the two ends of the supporting column, of the rolling shaft respectively, the length of the rolling shaft is larger than the total width of the bearings, the diameter of the rolling shaft is 20 mm, the difference between the inner diameter of each bearing and the diameter of the rolling shaft ranges from 0.5 mm to 1 mm, and the height difference between the lowermost end of each bearing and the lowermost end of the corresponding limiting plate is 2 mm. The stress diffusion roller has the advantages that due to the facts that the bearings are arranged, strength of the rolling shaft is improved, and the supporting column is arranged, the bearing capacity of the whole stress diffusion roller is improved; due to the fact that the difference between the inner diameter of each bearing and the diameter of the rolling shaft and the height difference between the lowermost end of each bearing and the lowermost end of the corresponding limiting plate are limited, the friction coefficient of the stress diffusion roller is reduced; due to the fact that the sideward movement space is reserved, the sideward stress diffusion capacity of the stress diffusion roller is greatly improved, particularly in the curved section of rail change operation, tension of the lower strand of curves and surplus stress of the upper strand of the curves can be effectively reduced, it is ensured that a steel rail freely stretches out and draws back, and the steel rail is prevented from sideward inclination.

Description

technical field [0001] The invention relates to seamless railway laying and maintenance facilities, more specifically a stress relief roller. Background technique [0002] In recent years, the speed of trains has been increased many times, and several passenger dedicated lines have been built or are under construction. With the arrival of the climax of the construction of passenger dedicated lines and the acceleration of the transformation of existing lines, more seamless lines have been used. The construction of passenger dedicated lines has brought many conveniences to people, and seamless line technology is being more widely used. The welding technology requirements for long rails in the laying of seamless lines are constantly increasing. Long rail welding and stress relief are important procedures in the construction of seamless lines. stability and driving safety. [0003] Dissipating and anti-friction roller is a special tool for stress relief of seamless lines and ...

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned patent uses the same roller and is supported by multiple bearing seats, so that the strength of the roller is increased. However, if there are many rollers, more bearing seats need to be installed, which makes the structure of the equipment complicated. A roller is set between the seats, which increases the friction between the roller and the bearing seat, resulting in a larger friction coefficient of the overall equipment. The upper edge of the roller is cooked with the upper edge of the sliding bearing seat, and when the track moves sideways, it will slide off the two sides of the roller. , causing damage to equipment and personnel

[0007] Moreover, when the two patents have the functions of preventing curve rail change, rail tipping and side shifting, etc., due to the small gap between the bearing and the bearing seat / the roller and the bearing seat (as can be seen from the drawings), the track stress adjustment construction Lateral dumping, especially in the curved section of the track change operation, is not conducive to the work, and the damage to the bearing seat and bearing / roller is greater, and the service life of the equipment is lower

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