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Method and system for testing brake pressure without dismantling rail transit brake system

A braking system and rail transit technology, applied in railway vehicle testing, measuring the force applied to the control element, etc., can solve the problems of heavy weight, cumbersome detection, cumbersome and other problems, improve the accuracy of test results, and reduce the amount of preparation work , the effect of easy detection

Inactive Publication Date: 2010-10-06
CHONGQING UNIV
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  • Abstract
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Problems solved by technology

The existing detection method obtains the input-output ratio of the air-to-oil converter, and there are some shortcomings in consideration of the actual situation: 1. The intervention of the pressure sensor changes the characteristic system parameters of the original hydraulic oil circuit
3. The detection is cumbersome. The air-oil converter in the brake system needs to be disassembled from the vehicle chassis and the oil circuit needs to be disassembled. All decomposed seals need to be replaced during installation, and the brake system itself is bulky and heavy. Quite inconvenient; since the performance test of the brake system is a routine work, this cumbersome operation shows its shortcomings

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  • Method and system for testing brake pressure without dismantling rail transit brake system
  • Method and system for testing brake pressure without dismantling rail transit brake system
  • Method and system for testing brake pressure without dismantling rail transit brake system

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Embodiment Construction

[0022] In order to conveniently provide reliable and accurate pressure output values ​​for comprehensive performance testing of rail transit brake systems, so as to facilitate obtaining a more valuable brake system input-output ratio, the main improvement of the present invention lies in the selection of test points. As mentioned in the background art, the basis of the test of the present invention—the rail transit brake system is mainly composed of an air-fuel converter and a brake caliper. The traditional test point is selected at the liquid end of the air-fuel converter, and the pressure output test of this test method Click on the brake caliper shoe. In this way, during the test, the brake system can be tested without disassembling it from the track, and the on-track test can be realized. At this time, the working state of the brake system is completely consistent with the actual use state, which is not only practical, but also convenient. In addition, the shoe pressure at ...

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Abstract

The invention discloses a method and a system for testing the brake pressure without dismantling a rail transit brake system. In the test method, a test point is selected at brake shoes of a brake clamp, the positive pressure value on a brake disc acted by the brake shoes is directly measured, and the pressure value can be directly used for evaluating the performance of the brake system. The test system comprises a signal acquisition module, a signal processing module and a display module, wherein the signal acquisition module is arranged on the brake clamp instead of one brake shoe and used for acquiring a piston thrust signal of the brake clamp. Compared with the conventional detection method, the invention has reliability and availability, small preparation workload before detection, easier and more convenient detection as well as higher efficiency. The brake system is not separated from a rail in the test process so that the influence of retesting on a test result is avoided and the accuracy of the test result is further improved.

Description

Technical field [0001] The invention relates to a method for testing the performance of a rail transit brake system, where the performance specifically refers to the pressure output to the shoe through the air-fuel converter and the brake caliper. This method does not need to disassemble the rail transit brake system from the vehicle chassis, nor does it need to disassemble the original hydraulic system, but can directly measure the final positive pressure value output to the brake shoe, which is the track The comprehensive performance test of the traffic brake system provides the most reliable and direct performance parameters. The present invention also designs a set of corresponding test system without disassembly according to the method. Background technique [0002] Rail transit (such as light rail and subway) has gradually become an important means of transportation in cities, carrying a large number of citizens for daily travel. The detection of rail transit safety perfo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/22G01M17/08
Inventor 杨昌棋任光胜马希钦唐亮梁惺
Owner CHONGQING UNIV
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