CN101852665B - Method and system for testing brake pressure without dismantling rail transit brake system - Google Patents
Method and system for testing brake pressure without dismantling rail transit brake system Download PDFInfo
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- CN101852665B CN101852665B CN2010101998290A CN201010199829A CN101852665B CN 101852665 B CN101852665 B CN 101852665B CN 2010101998290 A CN2010101998290 A CN 2010101998290A CN 201010199829 A CN201010199829 A CN 201010199829A CN 101852665 B CN101852665 B CN 101852665B
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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
The present invention relates to a kind of method that is used for test tracks traffic brake system performance, the performance here specially refers to output to the brake jaw through the oily transducer of sky the pressure of shoe plate.This method neither needs the brake system of track traffic is disassembled from vehicle chassis, do not need original hydraulic system is disassembled yet, and can directly record the final positive pressure value size that outputs on the brake shoes, for detecting, track traffic brake system combination property provides reliable, the most direct performance parameter.The present invention has also designed the corresponding nothing of a cover according to this method and has disassembled test macro.
Background technology
Track traffic (as light rail and subway etc.) progressively becomes the vehicles important in the city, is carrying a large amount of citizen's go off dailys.The detection of track traffic security performance is natural becomes the problem of significant, and wherein to detect be the problem of overriding concern to the combination property of brake system.Current track traffic brake system generally adopts empty oily transducer (or gas-liquid transducer) by oil circuit and brake clip clipper joint, by friction force the brake flange on the wheel hub is held tightly when braking by the shoe brake that is installed on the braking clamp.Its ultimate principle is: empty oily transducer is converted to hydraulic pressure with the air pressure of input, hydraulic pressure promotes to brake the piston of clamp both sides more simultaneously by oil circuit, piston is released, thereby produces the pressure to shoe plate, shoe brake and brake flange are held tightly, produced moment of friction and realize brake.
Existing brake system combination property detects input and output ratio and the close property of airtight liquid that leading indicator is empty oily transducer, and input and output are than the ratio of the hydraulic pressure of air pressure that is meant empty oily transducer input and output.The air pressure of input becomes more readily available, and the pressure transducer of at present measurement of the hydraulic pressure of output being settled by the oily transducer liquid of sky end obtains.What existing detection mode obtained is the input and output ratio of empty oily transducer, and consider with practical conditions to come with some shortcomings: 1, the intervention of pressure transducer has changed original hydraulic circuit tag system parameter.2, pressure transducer detects the hydraulic pressure obtain and braking clamp piston the relation of the pressure of shoe plate is comprised some uncertain factors, as friction, minute leakage and microbubble etc., what directly play braking action in the braking procedure is the normal pressure that outputs on the braking clamp shoe plate, this is only the data that various researchs really need be known, is necessary to improve existing evaluation method.3, detection is loaded down with trivial details, the empty oily transducer in the brake system need be disassembled and need to decompose oil circuit from vehicle chassis, and the seal that all decomposed during installation all needs to change again, and huge, the Heavy Weight of brake system own vol, quite inconvenience; Because the test of brake system performance is the work of a routine, therefore this loaded down with trivial details operation more demonstrates its deficiency.
Summary of the invention
At the prior art above shortcomings, the nothing that the purpose of this invention is to provide a kind of convenient test, special test tracks traffic brake system brake pressure value that accuracy is high is disassembled method of testing.
The present invention provides a kind of track traffic brake system brake pressure not have the test macro of disassembling also based on this method of testing simultaneously.
Technical scheme of the present invention is achieved in that a kind of track traffic brake system brake pressure does not have the method for testing of disassembling, this track traffic brake system mainly is made of oily transducer of sky and braking clamp, be selected in empty oily transducer liquid end with respect to traditional test point, the test point of this method of testing is selected in braking clamp brake shoes place, directly measures shoe plate and acts on positive pressure value on the brake flange.This force value not only can be directly used in estimates brake system performance (the present invention has proposed a kind of new track traffic brake system method of evaluating performance thus), and also can obtain brake system hydraulic pressure size and be used for docking or comparing with the method for having now by calculating.
The concrete testing procedure of this method is:
1) will brake shoe brake on the piston of clamp both sides and appoint and get one, change force transducer; The force transducer shape is identical with the shape of shoe brake, and force transducer is simulated former shoe brake emulation and installed, and directly acts on the actual vehicle brake flange; Do not change the real system duty;
2) brake system of online startup tested vehicle makes former car brake system directly act on force transducer and power output information to actual shoe brake pressure;
3) can obtain the size of the power of piston action on force transducer according to the force transducer output signal, the size of this power is the normal pressure of shoe brake to brake flange; This positive pressure value can be directly used in the braking quality evaluation.
If the 3rd) size of the normal pressure that obtains of step combines the size that can calculate the brake system output pressure with braking the clamp piston area, is used for docking or comparing with existing method.
The present invention has also designed a kind of portable railway traffic brake system brake pressure based on above-mentioned method of testing does not have the test macro of disassembling, this system comprises signal acquisition module, signal processing module and the display module that connects successively, described signal acquisition module replaces one of them shoe brake to be installed on the braking clamp, be used for gathering braking clamp piston thrust signal, described thrust signal is input to signal processing module, by obtaining the size of shoe plate normal pressure and brake system output pressure after the signal processing module processing and showing by display module.
Described signal acquisition module comprises force transducer, signal amplifier and the data acquisition unit that connects successively, and force transducer substitutes original brake shoes and is installed on the braking clamp, and the output of data acquisition unit connects the input of signal processing module.
The shape of described force transducer is identical with the shoe brake shape.
Compared to existing technology, the present invention has following beneficial effect:
1, the present invention directly measures the normal pressure between brake shoes and brake flange, it can reflect that brake system is finally to the action effect of brake flange, therefore under same test condition, the present invention detects than existing brake system combination property and has more reliability, practicality.
Do not need when 2, the present invention detects brake system is decomposed from vehicle chassis dismounting and oil circuit, just there is not the problem of installing and resealing in nature, can whenever testing that vehicle is stopped transport; And test macro provided by the invention can be connected with brake system easily, the testing staff only need take off one of them shoe brake, promptly realized being connected of native system and brake system according to shoe brake installation steps installing force sensor again, force value can directly be read from display module, also can generate form by computing machine and read; Preliminary work amount before detecting is little, and it is easier, convenient to detect, and efficient is higher.
Brake system did not de-orbit when 3, the present invention tested, and it is in full accord to be in rail state and duty, avoided testing after the dismounting influence to test result, so the test result accuracy was further enhanced again.
4, the invention provides a kind of brand-new brake system evaluation index, promptly with the brake pressure of the normal pressure size between brake shoes and brake flange as brake system output.
Description of drawings
Fig. 1-test system structure block scheme of the present invention.
Fig. 2-force transducer outside drawing of the present invention.
Embodiment
Provide reliably and accurately pressure output value in order to detect for easily track traffic brake system combination property, be beneficial to obtain more valuable brake system input and output ratio, the present invention mainly improves and is choosing test point.As stated in the Background Art, basis-track traffic the brake system of the present invention's test mainly is made of oily transducer of sky and braking clamp, traditional test point is selected in empty oily transducer liquid end, and the test point of this method of testing pressure output then is selected on the braking clamp shoe plate.In test, just brake system can be disassembled from track like this, can be implemented in the rail test, this moment, the brake system duty was in full accord with actual user mode, and is not only practical, and convenient.In addition, the shoe plate pressure of this test point best embodies out the pressure that acts on the brake flange, and this pressure also is an important parameter that really embodies braking quality, and whether can also detect oil circuit in addition has problems such as leakage, loss.
The concrete testing procedure of this method is:
1) will brake shoe brake on the piston of clamp both sides and appoint and get one, change force transducer; The shape of force transducer simulating brake shoe plate;
2) brake system of vehicle on the online startup track makes the output of brake system act on the brake flange by force transducer;
3) can obtain the size of the power of piston action on force transducer according to force transducer output signal (electric signal), the size of this power is the normal pressure of shoe brake to brake flange; This positive pressure value can be directly used in the braking quality evaluation;
If the 3rd) size and the braking clamp piston area of the normal pressure that obtains of step combine the size that can calculate the brake system output pressure, be used for docking or comparing with existing method.
Below in conjunction with accompanying drawing test macro of the present invention is described further.
This test macro is a cover system that designs at detecting pressure output value in the track brake system input and output ratio specially, and this system has comprised pressure survey and the result shows.Concrete structure as shown in Figure 1, as can be seen, this test macro comprises signal acquisition module 1, signal processing module 2 and the display module 3 that connects successively from the figure.Described signal acquisition module replaces shoe brake to be installed on the braking clamp, be used for gathering braking clamp piston thrust signal, described thrust signal is input to signal processing module, by obtaining shoe plate normal pressure and brake system hydraulic pressure size after the signal processing module processing and showing by display module.
See Fig. 1, wherein signal acquisition module 1 is made up of the force transducer 4, signal amplifier 5 and data acquisition unit 6 three parts that connect successively, and the output of data acquisition unit connects the input of signal processing module.Force transducer replaces one of them shoe brake to be installed on the braking clamp, and above-mentioned signal acquisition module is finished by force transducer exactly to the collection of braking clamp piston thrust signal.
Described force transducer is a force transducer that designs according to the shape of braking the clamp shoe plate, and it is based on the force transducer of strain measurement.For can be easy for installation, force transducer shape and the actual shoe brake of mounting means complete simulation be seen Fig. 2, and this measure is to measure in order to make force transducer can replace shoe brake to be directly installed on the braking clamp piston.Force transducer changes force signal into electric signal and by signal amplifier 5 signal is amplified, and records magnitude of voltage by data acquisition unit 6 again, then the magnitude of voltage that records is input to analyzing and processing in the described signal processing module 2.The function of signal processing module 2 mainly contains two: the one, and the signal that collection is come in to force transducer is demarcated; The 2nd, calculate the shoe plate force value by the power value that records.Display module 3 is mainly used to facilitate for the testing staff, show the measured shoe plate normal pressure size or the size of brake system output pressure, form by the digital display gauge outfit is placed on the control panel, perhaps is presented on the all-round property testing control program interface for testing staff's monitoring and record.
Whole brake system all-round property testing is all finished under nothing is disassembled situation by this test macro.The testing staff only need take off shoe brake, promptly realizes being connected of test macro and brake system according to shoe brake installation steps installing force sensor again, and force value can directly be read from display module, also can generate form by computing machine and read.
Claims (5)
1. a track traffic brake system brake pressure does not have the method for testing of disassembling, this track traffic brake system mainly is made of oily transducer of sky and braking clamp, it is characterized in that: the test point of this method of testing is selected in brake clip and clamps down on moving shoe plate place, measures shoe brake and acts on the brake pressure that the positive pressure value on the brake flange is exported as brake system; Its testing procedure is:
1) will brake shoe brake on the piston of clamp both sides and appoint and get one, change force transducer;
2) brake system of vehicle on the online startup track makes the output of brake system act on the brake flange by force transducer;
3) can obtain the size of the power of piston action on force transducer according to the force transducer output signal, the size of this power is the normal pressure of shoe brake to brake flange, and this positive pressure value is the brake pressure of brake system output.
2. track traffic brake system brake pressure according to claim 1 does not have the method for testing of disassembling, and it is characterized in that: the shape of described force transducer simulating brake shoe plate.
3. the track traffic brake system brake pressure that obtains based on the described method of testing of claim 2 does not have the test macro of disassembling, it is characterized in that: this test macro comprises the signal acquisition module (1) that connects successively, signal processing module (2) and display module (3), the force transducer of described signal acquisition module (1) replaces one of them shoe brake to be installed on the braking clamp, be used for gathering braking clamp piston thrust signal, described thrust signal is input to signal processing module (2), by obtaining the shoe plate normal pressure after the signal processing module processing, this shoe plate normal pressure is brake system output pressure size and shows by display module.
4. there is not the test macro of disassembling according to the described track traffic brake system of claim 3 brake pressure, it is characterized in that: described signal acquisition module comprises force transducer (4), signal amplifier (5) and the data acquisition unit (6) that connects successively, force transducer (4) replaces one of them shoe brake to be installed on the braking clamp, and the output of data acquisition unit (6) connects the input of signal processing module (2).
5. do not have the test macro of disassembling according to the described track traffic brake system of claim 4 brake pressure, it is characterized in that: described force transducer is a strain force sensor, and the shape of force transducer is identical with the shoe brake shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101998290A CN101852665B (en) | 2010-06-13 | 2010-06-13 | Method and system for testing brake pressure without dismantling rail transit brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101998290A CN101852665B (en) | 2010-06-13 | 2010-06-13 | Method and system for testing brake pressure without dismantling rail transit brake system |
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| Publication Number | Publication Date |
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| CN101852665A CN101852665A (en) | 2010-10-06 |
| CN101852665B true CN101852665B (en) | 2011-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101998290A Expired - Fee Related CN101852665B (en) | 2010-06-13 | 2010-06-13 | Method and system for testing brake pressure without dismantling rail transit brake system |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607736B (en) * | 2011-12-30 | 2016-12-21 | 武汉康特圣思光电技术有限公司 | A kind of fiber grating combines the sensing arrangement of brillouin scattering signal detection |
| CN102840973B (en) * | 2012-09-07 | 2015-03-11 | 太原鹏跃电子科技有限公司 | Stress testing device for brake adjuster |
| CN105043791B (en) * | 2015-09-10 | 2018-01-26 | 常州信息职业技术学院 | A kind of pneumatic gripping testing stand |
| CN113212254B (en) * | 2021-06-10 | 2023-06-20 | 贵州电网有限责任公司 | Method for reducing urban rail transit track potential by considering train stop time |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5038605A (en) * | 1990-08-16 | 1991-08-13 | Trinity Industries, Inc. | Railcar brake tester |
| CN2117601U (en) * | 1991-12-03 | 1992-09-30 | 赵铁 | Automobile brake tester |
| CN201184844Y (en) * | 2007-12-11 | 2009-01-21 | 上海西派埃自动化仪表工程有限责任公司 | Portable braking property tester |
| JP2010071854A (en) * | 2008-09-19 | 2010-04-02 | Central Japan Railway Co | Device for detecting pressing force of foundation brake device and device for calculating efficiency of foundation brake |
| CN101788387A (en) * | 2010-03-17 | 2010-07-28 | 中国测试技术研究院声学研究所 | Dynamic detecting method and device of portable brake performance tester |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4773916B2 (en) * | 2006-03-30 | 2011-09-14 | 本田技研工業株式会社 | Brake force detection device |
-
2010
- 2010-06-13 CN CN2010101998290A patent/CN101852665B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5038605A (en) * | 1990-08-16 | 1991-08-13 | Trinity Industries, Inc. | Railcar brake tester |
| CN2117601U (en) * | 1991-12-03 | 1992-09-30 | 赵铁 | Automobile brake tester |
| CN201184844Y (en) * | 2007-12-11 | 2009-01-21 | 上海西派埃自动化仪表工程有限责任公司 | Portable braking property tester |
| JP2010071854A (en) * | 2008-09-19 | 2010-04-02 | Central Japan Railway Co | Device for detecting pressing force of foundation brake device and device for calculating efficiency of foundation brake |
| CN101788387A (en) * | 2010-03-17 | 2010-07-28 | 中国测试技术研究院声学研究所 | Dynamic detecting method and device of portable brake performance tester |
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| CN101852665A (en) | 2010-10-06 |
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