Permanent magnet maglev rail transit bogie and track mechanical structure

Abstract

The present application provides a permanent magnet maglev rail transit bogie and a rail mechanical structure, the two cooperate with each other to maintain a small gap between the maglev rail train and the track during the running process under load, thereby greatly improving the driving system. Operational efficiency of linear motors. The bogie of the present application is specially designed as a "king"-shaped structure. The upper support arm, the middle support arm and the lower support arm, which are symmetrically arranged on both sides of the vertical center axis of the bogie, cooperate with the drive rails and brakes in the sky beam. Track support arm, respectively realize the installation of maglev train drive system, suspension system, guidance system, braking system and safety guarantee system. The present application separates the guiding system and the braking system of the maglev train, which can overcome the technical contradiction that the braking needs to increase the friction force and the guiding needs to reduce the friction force under the existing solution of the guide wheel taking into account the braking function. In the present application, the guiding resistance of the guide wheel set is small, and the friction force of the braking system is large, and the two are independent of each other.

Description

technical field [0001] The present application relates to the technical field of maglev rail transit, in particular to a permanent magnet maglev rail transit bogie and a rail mechanical structure. Background technique [0002] With the rapid growth of urban population and economy, the pressure on the ground transportation system is increasing, and ground road resources are becoming more and more scarce. However, with the improvement of living standards, people have higher and higher requirements for the quality of transportation. In order to solve this contradiction, underground rail transit and air rail transit are gradually developed across the country. Because underground rail transit (such as subway) has some inherent shortcomings, such as high construction cost, long construction period, large scale of demolition and reconstruction of ground buildings, and high geological requirements. However, the construction cost of air rail transit is low, the construction period ...

AI Technical Summary

Problems solved by technology

[0004] But the following problems generally exist in the bogie mechanical structure of the existing maglev rail transit system: 1. After the load of the suspended permanent maglev train changes, the suspension height of the bogie changes and causes the traveling wave magnetic field produced by the stator electromagnet coil of the linear motor , the interaction traction force on the induction plate changes, which will make the driving efficiency of the train unstable; 2. The existing vehicle traction system is driven by a long stator linear motor, which is expensive and has high requirements for the positioning accuracy of the equipment; 3. The existing braking system uses guide wheels to realize the two functions of guiding and braking. When it is used as a guiding device, the guiding resistance is expected to be as small as possible. On the other hand, when it is used as a braking device, the friction force on the wheels is expected to be as large as possible. , there are technical contradictions in the actual implementation of the equipment, so it is difficult for both the guiding and braking effects to meet the ideal requirements; 4. When the bogie is sideways, the existing guide wheels cannot be actively adjusted, which will cause pressure on the guide wheels and the inner wall of the track beam. As a result, the outer ring of the guide wheel is rubbed, and in the long run, it will cause local wear and tear on the outer ring of the guide wheel and the noise generated by the guide wheel, which will bring certain safety hazards to the operation of the maglev train, and will also reduce the stability and ride comfort of the vehicle system.

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