Railway freight car side bearing and railway freight car bogie

Abstract

The invention discloses a railway freight car side bearing and a railway freight car bogie. The side bearing comprises a wearing plate, a side bearing seat, a rubber elastomer, a roller assembly and acover plate; the wearing plate is mounted on the upper side of the cover plate; the roller assembly is installed on the side bearing seat; the rubber elastomer comprises an inner core, a rubber layerand an outer sleeve which are sequentially connected in a sleeved mode from inside to outside; a plurality of metal inner sleeves are fixedly embedded in the rubber layer; a closed sliding cavity isformed between the side bearing seat and the cover plate; the rubber elastomer is supported on the lower side face of the cover plate; and the rubber elastomer is installed in the sliding cavity. Therubber elastomer of the side bearing is arranged in a closed mode, external acid-base pollution and gravel dust interference are avoided, and the service life of the rubber elastomer which is a vulnerable part is prolonged.

Description

technical field [0001] The invention relates to the technical field of rail vehicles, in particular to a side bearing of a railway freight car and a bogie of a railway freight car. 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] Existing side bearing str...

AI Technical Summary

Problems solved by technology

[0004] 1. The structure is complicated and the loading and unloading is troublesome, which increases the cost of maintenance and replacement;

[0005] 2. The rubber elastic body in the side bearing is partially exposed, which is easily polluted by the external acid and alkali environment and accelerates aging;

[0006] 3. The open structure of the side bearing cannot effectively avoid sand and dust, which will affect its working performance;

[0007] 4. Larger size and heavier weight

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