Spider for goods train vehicle

Abstract

The present invention discloses a center plate used in a vehicle for railway lorry which comprises a body center plate [1] and a truck center plate [5]. A downward bulged circular arc face is arranged at the bottom of the body center plate [1] along the vehicle width direction. A concaved circular arc face which is matched with the circular arc face of the body center plate is arranged on the truck center plate [5]. The curve radius of the circular arc face of the body center plate [1] is smaller than the curve radius of the circular arc face of the truck center plate [5]. The present invention has the advantages that the friction resistance between the body center plate and the truck center plate is small when the vehicle swings which facilities to the swing of the vehicle, partly overcomes the snake-like instability when the vehicle runs and increase the speed when the train passes through a curve or a crossroad.

Description

technical field [0001] The present invention relates to center pans for railway wagon vehicles. Background technique [0002] The center plate is the part connecting the carriage and the bogie. It is composed of an upper center plate and a lower center plate. The upper center plate is fixed at the bottom of the carriage, and the lower center plate is fixed at the center of the bolster of the bogie. The upper and lower center plates are supported by the horizontal plates in contact with each other. And transfer the vertical load of the car body. At present, the trucks used in China, whether they are gondola cars, flat cars, tank cars, boxcars, or most special vehicles, all use the primary suspension system, which has a relatively simple structure, is easy to overhaul, and has low manufacturing costs. It's totally doable at low speeds. However, after the speed is increased, the contradiction between the stability, smoothness and curve passing performance of the vehicle is mo...

AI Technical Summary

Problems solved by technology

However, after the speed is increased, the contradiction between the stability, smoothness and curve passing performance of the vehicle is more prominent, mainly because the elastic force dominates when the speed is low; when the running speed is higher than 100km / h, the inertia The force dominates; the primary suspension cannot be reduced or eliminated at all. When the truck runs at high speed, it will appear snaking instability on the track, especially when the train passes through a curve or fork, it needs to slow down. High, it will lead to excessive centrifugal inertial force and affect the safety of operation

Especially when the truck is under heavy load, the load tonnage is all concentrated on the center plate, so that the center of the bolster tends to bend downward and the lower parts of the two side frames expand outward. When the vehicle runs along the track, it is subjected to various lateral forces. If the load on one side of the vehicle is reduced and the derailment is caused, if the vertical force between the wheel on one side of the vehicle and the rail is reduced to zero under the most unfavorable combination of various lateral forces, the vehicle is in danger of overturning.

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