Height self-adjusting device of railway wagon

Abstract

The invention discloses a height self-adjusting device of a railway wagon. The height self-adjusting device of the railway wagon comprises a bearing support plate installed on a central square frame through bearing springs, struts are arranged on the two sides of the bearing support plate, each strut is sleeved with a tapper sleeve assembly, a middle support plate is installed on the bearing support plate in a stacking mode, the two sides of the middle support plate are installed on outer taper sleeves of the tapper sleeve assembly in a sleeved mode, a limiting frame is arranged on the upper portion of the middle support plate, the two sides of the limiting frame are arranged on the struts in a sleeved mode respectively, convex rings are arranged on the bottom face of the limiting frame, through holes are formed in the center of the middle support plate and the center of the bearing support plate respectively, a pull rod is installed in the through holes, the upper end of the pull rod is hinged to the hinge end of a left crank throw and the hinge end of a right crank throw, the free ends of the left crank throw and the free ends of the right crank throw are each provided with upper rolling wheels and lower rolling wheels, limiting rolling shafts which can form limiting with the limiting frame are arranged in the middle of the left crank throw and the middle of the right crank throw, the left crank throw and the right crank throw are located on the upper portion of the middle support plate, a return spring is arranged below the middle support plate, and the upper surface of the middle support plate abuts against the lower rolling wheels. The height self-adjusting device of the railway wagon is suitable for railway wagons.

Description

Technical field [0001] The invention relates to the field of height adjustment of railway freight cars, in particular to a self-adjustment device for railway freight cars. 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 differ...

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 there is an urgent need to develop a self-levelling device that can automatically adjust the height of the bogies.

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