Hybrid vortex rail braking system

Abstract

The invention discloses a hybrid vortex rail braking system. In the technical scheme, lifting air cylinders are symmetrically arranged on both sides of a Y-shaped rotating pivot between a side frame of a truck frame and a magnetic system of a brake, an air braked handling system is respectively connected with the two lifting air cylinders, the piston rods of the two lifting air cylinders are connected with the magnetic system of the brake, the rod-free cavities of the two lifting air cylinders are connected with the side beam of the truck frame, and a wear plate on the bottom surface of the magnetic system of the brake is arranged to be opposite to a rail. The invention can control the power and the deceleration process through positive excitation of the exciting coil and regulation of the exciting current, thereby achieving the effect of actively controlling the deceleration. The magnetic attraction between the magnetic system of the brake and the rail can be reduced through reverse excitation of the exciting coil, thereby facilitating the lifting of the magnetic system of the brake. Simultaneously, the invention has the advantages of simple structure, energy conservation, high reliability, light weight and the like, and not only can be applied in high-speed railways, but also has broad application prospects in maglev trains, urban rail transits and other fields.

Description

Technical field [0001] The invention relates to a track braking system, in particular to a hybrid eddy current track braking system. Background technique [0002] The shortage of railway transportation capacity has become one of the main contradictions restricting the development of my country's economic construction. High-speed railway has become the basic trend of railway development and the basic guarantee of national modernization due to its advantages of large transportation capacity, safety and comfort, all-weather transportation, environmental friendliness and sustainability. According to the "Medium and Long-term Railway Network Planning", during the "Eleventh Five-Year Plan" period, my country's high-speed railway construction mileage will reach 7,000 kilometers and will reach 18,000 kilometers by 2020. [0003] Braking technology is one of the nine key technologies of high-speed trains. As we all know, the braking power during braking is proportional to the third power o...

AI Technical Summary

Problems solved by technology

First of all, although the pressure release can be used to ensure that the air cylinder operates when the air system fails, when the circuit fails, the loss of excitation will directly lead to the loss of braking force

To this end, ICE3 installed a large-capacity nickel-cadmium battery as a backup power supply, and additionally installed an additional friction braking system as a cold backup redundancy, but the weakness of the eddy current track braking system itself already exists, and affects the lightness of the train. Quantify

Secondly, when the power supply is cut off when the train is parked, the natural eddy current braking system cannot work

In addition, the excessive excitation power and the resulting heat are also problems to be solved

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