Long-stroke roller-free side bearing of railway freight car and bogie

Abstract

The invention discloses a long-stroke roller-free side bearing of a railway freight car and a bogie. The side bearing comprises a wearing plate, a side bearing seat, a rubber elastomer, an outer sleeve and a cover plate; the wearing plate is mounted on the upper surface of the cover plate; the side bearing seat comprises a side bearing mounting plate and a side bearing column, a mounting hole is formed in the side bearing mounting plate, the rubber elastomer is connected between the outer sleeve and the side bearing column, the outer sleeve is supported on the lower side of the cover plate, acover plate through hole is formed in the cover plate, a wearing plate through hole is formed in the wearing plate, and the upper end of the side bearing column is slidably connected with the cover plate through hole and the wearing plate through hole. The side bearing seat has the function of a roller, and is simple in structure, light in weight, small in size, convenient to assemble and disassemble and low in maintenance and replacement cost; the side bearing cover plate and the rubber elastomer outer sleeve are connected in an interference fit mode and freely move in the vertical directionin a full-stroke mode. A gap is reserved between the metal cover plate and the side bearing seat, and enough large longitudinal and transverse rigidity can be provided.

Description

technical field [0001] The invention relates to the technical field of rail vehicles, in particular to a long-distance railway freight car without roller side bearings and a bogie. Background technique [0002] Railway freight cars generally consist of car body, bogie, brake device and coupler buffer device. The elastic side bearing is located on the upper part of the bogie, installed between the bolster and the car body, and supports the weight of the car body together with the center plate. There are mainly two types of commonly used railway freight car bogies, one is the gap type rubber body elastic side bearing, which is mainly used in low-speed vehicles (<100kM / h); the other is the constant contact rubber body elastic side bearing, Mainly used in high-speed vehicles (>100kM / h). The longitudinal and lateral rigidity of these two side bearings is generally small (about 5MN / m), and the vertical travel is generally less than 23mm. [0003] With the continuous speed...

AI Technical Summary

Problems solved by technology

[0005] 1. The main part of the side bearing and the rollers are located in different positions, the structure is complex and the cost is relatively high, which increases the cost of maintenance and replacement;

[0006] 2. There are rubber elastic bodies indirectly between the upper body and the lower body, resulting in insufficient rigidity of the upper body between the longitudinal and transverse directions

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