Brake method and brake device of train pneumatic performance simulation dynamic model trial

A technology of aerodynamic performance and braking devices, applied in aerodynamic tests, measuring devices, railway vehicle tests, etc., can solve problems such as high cost, difficult implementation, and electromagnetic interference of on-board test systems

Inactive Publication Date: 2009-05-27
CENT SOUTH UNIV
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  • Abstract
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AI Technical Summary

Problems solved by technology

Since the train model is equipped with an on-board test system, if the tested high-speed train model is directly braked by electromagnetic braking or eddy current braking, the on-board test system will be subject to electromagnetic interference
However, the long-distance deceleration track is difficult to realize under the existing test conditions, and the cost of laying the track and building related test sites is too high. Therefore, how to realize the braking of the train model safely and in a short distance has also become an issue to be solved. important question

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  • Brake method and brake device of train pneumatic performance simulation dynamic model trial
  • Brake method and brake device of train pneumatic performance simulation dynamic model trial

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Embodiment Construction

[0025] The braking method of the train aerodynamic performance simulation dynamic model test mainly adopts two-stage deceleration and braking to realize the complete stop of the train model running in an ultra-short distance. As shown in Fig. 1 and Fig. 2, the braking device of the train aerodynamic performance simulation dynamic model test is used to make the train model traveling at high speed from the test section II of the track realize parking braking in the braking section III of the track. A wear-resistant rubber plate 14 is installed on the inner side of a section of the track 11 at the entrance of the braking section III of the track, and a brake wedge is set at the bottom of the rear wheel assembly of the train model, and the brake wedge has a hook. The part of the brake wedge squeezes between the wear-resistant rubber plates 14 to generate a large frictional braking force, which reduces the speed of the train model running at high speed.

[0026] The second level of...

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Abstract

The invention relates to a moving model test braking method and a braking system thereof for train aerodynamic performance simulation. The braking method comprises: arranging friction material on one section of running track of a train model so as to make the train model suffer a friction and decelerate when running to the track; on the running track of a train model, arranging a braking pendant connecting with a traction rope which connects to a braking wedge capable of being articulated with the braking pendant with a piston body in a braking cylinder; when the train model passes by the braking pendant, connecting the braking wedge with the braking pendant. The invention is capable of realizing safe braking in an ultrashort distance and not producing any interference to train-carried test system in the train model, and realizing safe and effective braking of high-speed train through mechanical mode, thereby being favorable to ultrashort distance arrangement of test track, reducing design cost of train aerodynamic performance simulation test, and improving safety of braking of train model.

Description

technical field [0001] The invention belongs to the technical field of train mechanics and dynamic environment tests, and in particular relates to a train aerodynamic performance simulation dynamic model test braking method and a braking device for realizing safe braking of a high-speed train model. Background technique [0002] The purpose of train aerodynamics research is mainly to reduce aerodynamic resistance, improve handling stability, improve safety and comfort and reduce its impact on the environment. The research content of train aerodynamics can be summarized as follows. (1) Study the aerodynamic force and moment acting on the train, and their influence on the performance of the train. (2) To study the influence of natural wind on train performance and the influence of train wind on people and buildings (structures) when the train is running. (3) Study the pressure wave characteristics when the train passes through the tunnel and the train meets. (4) To study th...

Claims

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Application Information

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IPC IPC(8): G01M17/08G01M9/08
Inventor 张健刘国伟田红旗鲁寨军周丹熊小慧
Owner CENT SOUTH UNIV
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