Railway freight car self-adjusting bogie

Abstract

A self-heightening bogie for a railway freight car, the two ends of the side frame components are placed on the wheel shaft components, and a self-height adjustment device is provided between the bolster and the side frame components, and the self-height adjustment device is installed on the central side through a load spring. The supporting plate on the frame, there are struts on both sides of the supporting plate, the taper sleeve assembly is set on the support rod, the middle supporting plate is stacked on the supporting plate, and the two sides of the middle supporting plate are respectively sleeved on the outer cone of the taper sleeve assembly. Put it on, there is a limit frame on the top of the middle supporting plate, and the two sides of the limit frame are respectively set on the support rods. There is a pull rod inside, and the upper ends of the pull rods are respectively hinged with the hinged ends of the left crank and right crank. The free ends of the left crank and right crank are respectively provided with upper rollers and lower rollers. A limit roller is provided, and a return spring is provided under the middle supporting plate. The upper surface of the middle supporting plate is offset against the lower roller, the upper roller is offset against the inner surface of the bolster, and the bolster is covered on the support rod. Suitable for railway wagons.

Description

Technical field [0001] The invention relates to the field of railway freight car bogies, in particular to a railway freight car self-adjusting bogie. Background technique [0002] At present, heavy load and fast speed are the main directions for the development of railway freight cars. With the continuous improvement of railway freight car axle load and operating speed, the operating conditions of railway freight car bogies are more complicated, and the action force between wheels and rails continues to increase and accelerate The wear of the wheels and rails. The existing bogies mainly have two forms: [0003] The first type is a frame type bogie, which mainly adopts a series axle box suspension system. This type of bogie has the advantages of low unsprung mass and high critical speed. However, this type of bogie has a small axle weight, which cannot meet the requirements of modern railways for large axles. The demand for heavy bogies, and the height difference between empty and...

AI Technical Summary

Problems solved by technology

[0003] The first is the frame bogie, which mainly adopts the primary axle box suspension system. This type of bogie has the advantages of small unsprung mass and high critical speed, but the axle load of this type of bogie is small, which cannot meet the requirements of modern railways on large axles. The demand for heavy bogies, and the height difference between the empty car and the heavy car of this type of bogie is relatively large, so the coupler height difference between the empty car and the heavy car is likely to cause a coupler fracture accident and affect driving safety;

[0004] The second type is the three-piece bogie, which mainly adopts the central suspension system. This type of bogie has the advantages of heavy axle and low cost, but the height difference between the empty car and the heavy car is relatively large. In this way, the coupler height difference between the empty car and the heavy car is likely to cause a coupler fracture accident, which affects driving safety.

[0005] Therefore, the existing bogies have been difficult to meet the needs, and it is urgent to develop a new type of bogie that can automatically adjust the height.

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