A side bearing of a railway freight car and a bogie of a railway freight car

Abstract

The invention discloses a railway freight car vehicle side bearing and a railway freight car bogie. The side bearing includes a wear plate, a side bearing seat, a rubber elastic body, a roller assembly and a cover plate. The wear plate is installed on the upper side of the cover plate. The component is installed on the side bearing. The rubber elastic body includes an inner core, a rubber layer and an outer jacket that are sequentially sleeved from the inside to the outside. The rubber layer is embedded with multiple metal inner sleeves. A closed gap is formed between the side bearing and the cover plate. For the sliding connection cavity, the rubber elastic body is supported on the lower side of the cover plate, and the rubber elastic body is installed in the sliding connection cavity. The rubber elastic body of the side bearing is closed, which avoids external acid and alkali pollution and sand and dust interference, and prolongs the service life of the rubber elastic body of the wearing parts.

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

Images