Railway wagon bogie and side frame cross bar mechanism connection method and railway wagon bogie and side frame cross bar mechanism connection device

Abstract

The invention relates to a railway wagon bogie and side frame cross bar mechanism connection method. The railway wagon bogie and side frame cross bar mechanism connection method is characterized in that the relative motion between two side frames within the horizontal plane is eliminated by a five-bar mechanism, so that a stable structure is achieved. The five-bar mechanism comprises three connecting bars and two bars formed by the two side frames, the two side frames are connected with both ends of the three connecting bars, so that the five-bar mechanism is formed in the horizontal plane, and the relative motion between the two side frames within the horizontal plane is eliminated by the five-bar mechanism assembly. Since the railway wagon bogie and side frame cross bar mechanism connection method adopts the five-bar mechanism side frame control principle and the five-bar mechanism side frame control mechanism on the basis of a conventional three-major part type bogie, the defects of poor performance stability and structural stability existing in currently used four-cross bar connection bogies are overcome, the structural fatigue reliability of vehicles and the critical speed of vehicle running are increased effectively, the dynamic acting force between wheels and rails is decreased, and thereby the purpose of increasing the running speed and running quality of wagons and reducing operation and maintenance costs is achieved.

Description

technical field [0001] The invention relates to a method and device for connecting parts of railway freight cars, in particular to a method and device for connecting railway freight car bogies and side frame cross bar mechanisms, which are mainly used for fast and heavy-duty railway freight cars to prevent the gap between the two side frames. The invention relates to relative motion generated in a horizontal plane, which belongs to the technical field of railway wagon manufacturing. Background technique: [0002] Railway freight car bogie refers to a running device of railway freight cars. At present, according to the structure type, there are mainly two types of cast steel three-piece bogies and frame bogies. Among them, the three-piece railway freight car bogie has the advantages of simple structure and good load balancing performance, so it can be widely used in railway freight cars. The bogie is mainly composed of side frames, bolsters, damping devices, wheelsets, bea...

AI Technical Summary

Problems solved by technology

However, after adding a fixing device between the two connecting rods, the stress state of the two connecting rods is changed, and the additional bending moment generated by the mutual movement of the side frames along the longitudinal direction (track direction) will be transmitted to the cross rod, resulting in the or fixture fatigue failure

[0009]The main problem of the second side frame connection method is: this connection method, there is no direct connection between the two connecting rods, and the connecting rod itself only bears the side frame Transmitted tensile and compressive effects, thus easy to achieve good structural fatigue reliability

But obviously, when the side frames rotate with each other, this part will generate a large additional bending moment, which will lead to the fatigue failure of the cross bar

[0012] 2. Patent No. CN200910017141.3 published, titled "A Crossbar Mechanism for Railway Freight Car Bogie", which eliminates the The movement between the two sides of the frame, but when the force generated between the two sides of the frame is transmitted through the two parallel bars, an additional bending moment will still be generated, which will affect its fatigue strength, and the structure is more complicated

[0014] So although the above-mentioned patents all relate to the crossbar device of the railway freight car bogie, and also propose some structural improvements, they do not fundamentally change the existing The cross bar device still has the deficiencies in the two aspects mentioned above, so it still needs to be further improved

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