Frame for railway express freight car bogie

Abstract

The invention discloses a framework for a railway express wagon bogie. The framework comprises a pair of side beams of double-web box type structures, a pair of cross beams of round steel tubular structures, and a pair of arc-shaped longitudinal beams. Two-line rubber pile installing platforms are arranged in U-shaped cavities in the middles of the side beams, installing space is provided for swing bolsters and two-line rubber piles, and it is guaranteed that the connector dimension of the railway express wagon bogie and a wagon body can meet the use requirements of an existing railway wagon. Two side face rib plates are arranged between the side beams and the arc-shaped longitudinal beams for connection, the middles of upper cover plates of the arc-shaped longitudinal beams are connected with the side faces of the two-line rubber pile installing platforms of the side beams, it is guaranteed that transverse loads borne by first transverse stopping bases of the arc-shaped longitudinal beams can be transmitted to the side beams, stress of connecting weld joints of the arc-shaped longitudinal beams and the cross beams is reduced, and the bearing capacity of the framework to the transverse loads is improved. One of four axle box spring installing barrels in the two side beams is provided with a direct weighing valve installing base to adapt to installation of a weighing valve.

Description

technical field [0001] The invention relates to the technical field of railway freight car bogies, in particular to a frame for a railway express freight car bogie with a speed of 160km / h to 200km / h per hour. Background technique [0002] Railway freight car bogies mainly include three-piece bogies and frame bogies. Among them, the three-piece bogie has the disadvantages of low anti-diamond stiffness, large unsprung mass, and difficulty in installing disc brakes, which makes it difficult to run at a speed of more than 120km / h, while the frame-type bogie has a large anti-diamond stiffness. , small unsprung mass and other advantages, the dynamic performance of the frame bogie is obviously better than that of the three-piece bogie. The traditional fast truck bogie frame with rocking table and the bolster boom, longitudinal traction rod and other components are connected by a pin-shaft connection structure. After a period of operation, due to wear and tear, its dynamic performa...

AI Technical Summary

Problems solved by technology

[0005] The structure of the above-mentioned patents is basically similar, the side beams are relatively straight, and the air spring installation platform is provided in the middle of the side beams, which is mainly suitable for rail vehicles with no bolster air spring bearing method, and the existing maintenance conditions of railway freight cars cannot meet the requirements of air springs. Maintenance requirements. At present, railway freight cars are mainly carried by the center plate and side bearings. When the frame scheme disclosed in the above patent is adopted, there will be a problem of insufficient layout space for bolsters and secondary suspension devices, and it is impossible to ensure that the vehicle The height of the coupler meets the standard requirements;

[0006] In addition, in the above-mentioned patent, there is no connection between the longitudinal beam connecting the two beams and the side beam, and all the transverse beams are borne by the longitudinal beam, so that the joint weld between the longitudinal beam and the beam is subject to a large load, and weld crack failures are prone to occur;

[0007] Furthermore, the traction rod seat of the above-mentioned patent is set in the middle of the crossbeam, and the space cannot be adapted to the bogie with the bolster-mounted structure; and there is no direct weighing valve installation interface, which cannot meet the use requirements of railway wagons

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