Secondary suspension device of railway vehicle bogie

Abstract

The invention relates to a secondary suspension device of a railway vehicle bogie. A plurality of steel circular springs are arranged between a vehicle body and the bogie, an upper base plate and a lower base plate are arranged at the upper end and the lower end of each steel circular spring respectively, and the upper base plates and the vehicle body are fixedly connected. The lower base plates are fixedly connected with the bogie, each upper base plate and each lower base plate are respectively composed of two layers of steel plates and a rubber layer in the middle, and the upper base plates and the lower base plates are provided with stopping protrusions which extend to the inner rings of the steel circular springs. According to the secondary suspension device of the railway vehicle bogie, the steel circular springs are used, the bearing capacity is improved, when a vehicle needs to pass through a small curve, namely when the springs make large displacement, two inward annular stopping protrusions can be used for achieving a good stopping effect, spring strips on the end portions of the springs are stopped, instability of the springs is effectively avoided, and therefore the fact that the vehicle passes through the curve smoothly is guaranteed.

Description

technical field [0001] The invention relates to a secondary suspension device of a rail vehicle bogie, belonging to the technical field of rail vehicle manufacturing. Background technique [0002] With the rapid development of high-speed rail vehicles, higher design requirements are put forward for the bogie structure and performance. The suspension device of the bogie of the usual structure includes a primary suspension and a secondary suspension, wherein the primary suspension is arranged between the bogie and the wheel set, the secondary suspension is arranged between the bogie and the car body, and the secondary suspension is used for Carry the vertical load of the car body to improve the stability of the vehicle at high speed. [0003] Air springs are generally used in the secondary suspension devices of existing bogies, but for rail vehicles operating in harsh weather conditions or with large axle loads, simply using air springs can no longer meet the requirements of ...

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Problems solved by technology

[0003] Air springs are generally used in the secondary suspension devices of existing bogies, but for rail vehicles operating in harsh weather conditions or with large axle loads, simply using air springs can no longer meet the requirements of vehicle dynamic performance, especially When the vehicle passes through a small curve, the vehicle body and the bogie produce a large turning angle, resulting in a large horizontal displacement of the secondary springs, which can easily cause the vehicle to become laterally unstable.

In the primary suspension device, in order to improve the running stability of the vehicle, a composite structure of steel circular spring and rubber spring is used. The rubber spring is either arranged at the center of the steel circular spring or surrounded by the periphery of the steel circular spring, but this composite Complex structure, inconvenient manufacturing and installation, and high cost

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