Magnetic-levitation train suspension fault weight reducing technology emergent processing auxiliary system

A maglev train and emergency treatment technology, applied in electric vehicles, vehicle components, electric traction, etc., can solve problems such as midway damage and support wheel damage, and achieve the effect of reducing wear, reducing pressure, and ensuring normal operation.

Inactive Publication Date: 2016-02-03
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the existing suspension system does not have a redundant design, when a certain suspension point fails and cannot continue to float normally, the suspension control of this suspension point can only be cut off, and the support wheel at that place is put down, and the support wheel and the track surface friction to ensure that the maglev train continues to run at a low speed
Under such working conditions, the support wheels have to bear relatively large pressure, limited to the structure of the maglev train, the maximum size of the support wheels can only be designed to about 10mm, so it is difficult to avoid the problem of premature or midway damage to the support wheels

Method used

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  • Magnetic-levitation train suspension fault weight reducing technology emergent processing auxiliary system
  • Magnetic-levitation train suspension fault weight reducing technology emergent processing auxiliary system
  • Magnetic-levitation train suspension fault weight reducing technology emergent processing auxiliary system

Examples

Experimental program
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Embodiment

[0026] use figure 1 In a suspension frame, a weight-reducing power supply module and a power switch group connected to the suspension electromagnet are arranged. The suspension frame is 3.2 meters long, self-weight G1=65000N, rated load G2=25000N, supported by four suspension points, and the component force of train gravity offset by a single suspension point is: F1=(G1+G2) / 4=22500N.

[0027] After the support wheel is laid down, the gap between the suspension electromagnet and the track is δ=8mm. The weight loss power supply is a constant current source, which outputs a constant current of 27A. Such as figure 2 The dimension H and relevant parameters of the levitation electromagnet shown are shown in the table below.

[0028]

[0029] use image 3 structure, when a certain suspension point of the suspension frame breaks down and cannot be suspended, the corresponding support wheel is laid down at that place. At this time, the pressure between the support wheel and the...

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Abstract

The invention discloses a magnetic-levitation train suspension fault weight reducing technology emergent processing auxiliary system; and the system is applied to a suction suspension type medium-low-speed magnetic-levitation train, and comprises a weight reducing power supply module, and a power supply switch unit module accessed into a suspension electromagnet. When a magnetic-levitation train cannot be suspended due to the failure of one suspension point, the suspension working conditions of the suspension point only can be canceled, support wheels are arranged, and the magnetic-levitation train continuously travels with low speed by a dragging method; and the emergent processing auxiliary system can supply weight reducing current to the faulted suspension point through the power supply switch unit module by the weight reducing power supply, so that the pressure of the support wheels and the rail surface is effectively reduced, the service life of the support wheels is prolonged, and the safe operation of the magnetic-levitation train is preferably guaranteed.

Description

technical field [0001] The invention relates to the technical field of maglev trains, in particular to a suction levitation type medium-low speed maglev train. Background technique [0002] After more than 20 years of research and testing, domestic Southwest Jiaotong University, National University of Defense Technology, and Tongji University have mastered mature levitation control technology, laying a solid technical foundation for the operation of maglev trains. [0003] At present, the suction-type medium and low-speed maglev train has entered the stage of engineering application, and the first maglev operation line has been completed in Changsha and has completed preliminary commissioning. It is expected to be put into operation in the first half of 2016. [0004] During the operation of the maglev train, it is necessary to avoid stopping the train midway. Therefore, once a failure occurs, we will try our best to achieve the goal of continuing to operate under the premi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L13/04
Inventor 刘国清张昆仑郭秀云王滢董金文张慧王涛
Owner SOUTHWEST JIAOTONG UNIV
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