CN101793612B - Method and system for testing parking brake performance - Google Patents
Method and system for testing parking brake performance Download PDFInfo
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- CN101793612B CN101793612B CN2010101378777A CN201010137877A CN101793612B CN 101793612 B CN101793612 B CN 101793612B CN 2010101378777 A CN2010101378777 A CN 2010101378777A CN 201010137877 A CN201010137877 A CN 201010137877A CN 101793612 B CN101793612 B CN 101793612B
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Abstract
The invention discloses a method and a system for testing parking brake performance, which overcome the defect of the method needing to build a parking slope and directly measure the traction force of a parked vehicle, a force cell is connected with the tested vehicle through a wire rope, traction force which accounts for 20 percent of the overall weight of the tested vehicle or 15 percent when the overall weight of the vehicle is less than 1.2 times as heavy as the curb weight is applied on the vehicle according to standard specifications, the parking brake performance is acceptable when the tested vehicle stays still, otherwise is unacceptable, and the acceptability or unacceptability of the parking brake performance can be judged on an on-site screen or remotely transmitted to a computer and judged in the form of reading. The testing system is small and does not require the building of a special-purposed slope, thus dispensing with land occupation and capital expenditure needed by the slope method to build the testing slope and creating favorable conditions for various vehicle testing stations to carry out the testing operation. Because the testing system adopts a zigbee wireless communication mode for the first time, the testing system reduces electricity consumption, is light, and does not have external cables.
Description
Technical field
The present invention relates to a kind of performances of motor vehicles detection method and device, especially relate to a kind of performance of parking brake method of testing and device with tractive force.
Background technology
Development and national economy be unable to do without transport by road, and transport by road must at first guarantee safe driving.With traffic safety confidential relation is arranged and the performance of parking brake of motor vehicle is whether qualified; When motor vehicle Parking performance braking ability was defective, rear-end collision particularly will take place in up and down ramp in Parking when bridge is sloping up and down; Light damaged vehicle then, heavy then car crash.Therefore, stipulate all among GB7258 " motor vehicle security of operation technical conditions " and the GB21861-2008 " motor vehicle safety inspection project and method " and will test that the qualified rear of performance is accurate sets out on a journey to the performance of parking brake of motor vehicle.
According to National Standard motor vehicle security of operation technical conditions " GB7258-2004, the performance of parking brake method of inspection has two kinds:
1,7.14.2 performance of parking brake check
When adopting the damping force of brake test bench check automobile and motor tricycle holding brake device; Motor vehicle is unloaded; Take a driver; Use holding brake device, the summation of parking braking power should be less than 20% (to gross mass is not kerb weight motor vehicle 1.2 times below for be not less than 15%) of this car at complete vehicle weight under the test mode.
2,7.13.3 performance of parking brake check
Under light condition; Holding brake device should be able to guarantee that motor vehicle is 20% in the gradient (is that the motor vehicle below 1.2 times of kerb weight is 15% to gross mass); The attachment coefficient on tire and road surface is not less than that positive and negative both direction keeps fixed on 0.7 the ramp; Its time should be less than 5min ...
For this reason, " motor vehicle safety technique inspection body routine inspection qualification licensed technology condition " regulation, inspection body requires to build the Parking ramp: the Parking performance that is used for actual measurement vehicle on the ramp.Its designing requirement, ramp are respectively 15% and 20% each one, and general design proportion is high 1.5m, wide 3.5m, long 10m to 15% ramp, is high 2m, wide 3.5m, long 10m to 20% ramp.The ramp coefficient of road adhesion is not less than 0.7.
This shows each motor vehicle safety technique inspection body except that possessing brake test bench, also must build two check ramps and be used for the performance of parking brake test, need want 300m at least by technical requirement
2Place (not comprising turning, the place of turning around), and corresponding capital cost, therefore many inspection bodies can't carry out this business, suddenly better method to be had, the proving installation more economized emerge.
Summary of the invention
The objective of the invention is for overcome need build the Parking ramp could measuring machine the method shortcoming of motor-car performance of parking brake, a kind of performance of parking brake method of testing and device thereof with the tractive force traction is provided.
Technical scheme of the present invention is that a kind of performance of parking brake method of testing is characterized in that it may further comprise the steps:
1. seized motor vehicle is sailed the assigned address to proving installation the place ahead, motor vehicle is unloaded, takes a driver, uses holding brake device, links to each other motor vehicle with force cell with wire rope, locks after making wire rope be basically parallel to ground;
2. at this moment wire rope is progressively tightened up; Tractive force is added on the seized motor vehicle; By standard code be added to this car complete vehicle weight under the test mode 20% or be that the motor vehicle of kerb weight below 1.2 times is 15% o'clock to gross mass; Be that performance of parking brake is qualified when tested motor vehicle is motionless, otherwise be defective that the performance of parking brake acceptance or rejection can be by reading differentiation or teletransmission on the on-the-spot display to computer discriminant.
For realizing the performance of parking brake proving installation of performance of parking brake method of testing, mainly form: parking braking power generating means, force cell and data presentation device by three parts; Described parking braking power generating means is mechanical type or jack type or motor drawing type; Mechanical parking braking power generating means comprises base, tripod, at described tripod up-down handwheel and dynamometry handwheel is housed; Described up-down handwheel is by forming with coaxial worm gear and the elevating endless screw engagement of up-down handwheel; Described dynamometry handwheel is by forming with coaxial worm gear and the dynamometry worm mesh of dynamometry handwheel; Force cell places the end of dynamometry worm screw, and the other end of force cell is connected with tested motor vehicle through wire rope; Force cell output is connected with data presentation device.
Described data presentation device comprises button, single-chip microcomputer, LCD, Zigbee wireless communication module; Described single-chip microcomputer adopts the FLASH low-power scm; Described FLASH low-power scm is connected with LCD and Zigbee wireless communication module respectively; And through the Zigbee wireless communication module with data remote to computing machine, described data presentation device passes through dry cell power supply.
The present invention is owing to the performance of parking brake method of testing with the tractive force traction, and it is in light weight that the used test device has volume little (need not to build special-purpose ramp), and floor area is 2m only
2, added tens square metres only of seized vehicle parkings, saved with the ramp method and need build occupation of land and the capital cost that detects the ramp.Carry out this detection business for all kinds of motor vehicle inspection stations and created advantage.Adopted the mode of zigbee wireless telecommunications in the proving installation first, made proving installation accomplish power consumptive province (only with No. 5 batteries of two joints), light, no aerial lug (easy to install).Not only can intuitively testing result be presented on the LCDs of instrument during detection, and can also through the zigbee wireless transmissioning mode with the testing result synchronized transmission to online computer to satisfy the requirement of equipment networking.The proving installation scene need not provide, power supply, source of the gas.
Description of drawings
Fig. 1 is a performance of parking brake proving installation overall block-diagram;
Fig. 2 is a mechanical type parking braking power generating means structural representation.
Embodiment
A kind of performance of parking brake method of testing is characterized in that it may further comprise the steps:
1. seized motor vehicle is sailed the assigned address to parking braking proving installation the place ahead; Motor vehicle is unloaded, takes a driver, uses holding brake device; By shown in Figure 2; Link to each other motor vehicle with force cell 1 with wire rope, regulate up-down handwheel 6, lock after making wire rope be basically parallel to ground;
2. at this moment shake dynamometry handwheel 4; Wire rope is progressively tightened up; Tractive force is added on the seized motor vehicle, by standard code be added to this car complete vehicle weight under the test mode 20% or be that the motor vehicle of kerb weight below 1.2 times is 15% o'clock to gross mass, be that performance of parking brake is qualified when tested motor vehicle is motionless; Otherwise be defective, performance of parking brake acceptance or rejection signal scene can be by reading differentiation or teletransmission on the LCD on the data presentation device 8 to computer discriminant.
The performance of parking brake proving installation mainly is made up of three parts: parking braking power generating means, force cell and data presentation device; Described parking braking power generating means is mechanical type or jack type or motor drawing type; Because the main equipment room of general motor vehicle test house all has a segment distance from this device; Therefore to supply this device power supply or source of the gas that certain difficulty is all arranged; So this instrument adopts mechanical type power generating means, can be without the energy.By shown in Figure 2; Mechanical parking braking power generating means comprises base 2, tripod 3, up-down handwheel 6 and dynamometry handwheel 4 is housed on described tripod 3; Described up-down handwheel 6 is by forming with coaxial worm gear and elevating endless screw 7 engagements of up-down handwheel; Described dynamometry handwheel 4 is by forming with 4 coaxial worm gear and 5 engagements of dynamometry worm screw of dynamometry handwheel; The up-down handwheel 6 dynamometry handwheel 4 that takes place that is used to exert all one's strength moves up and down to be suitable for the measurement of different automobile types, and dynamometry handwheel 5 is used to produce the pulling force of 0-300Kg-7t.
Force cell 1 places the end of dynamometry worm screw 5, and the other end of force cell 1 is connected with tested motor vehicle through wire rope; Force cell 1 output is connected with data presentation device 8.Force cell switches according to vehicle with 2.
Described data presentation device by shown in Figure 1, comprises button, single-chip microcomputer, LCD, Zigbee wireless communication module; Described single-chip microcomputer adopts the FLASH low-power scm; Described FLASH low-power scm is connected with LCD; The on-the-spot data that show the performance of parking brake acceptance or rejection; And through the Zigbee wireless communication module with data remote to computing machine, through the establishment of application layer software is realized exchanges data between the two.Described data presentation device passes through dry cell power supply.
Claims (2)
1. a performance of parking brake proving installation is characterized in that, it mainly is made up of three parts: parking braking power generating means, force cell and data presentation device; Described parking braking power generating means is a mechanical type; Mechanical parking braking power generating means comprises base, tripod, up-down handwheel and dynamometry handwheel is housed on described tripod; Described up-down handwheel is by forming with coaxial worm gear and the elevating endless screw engagement of up-down handwheel; Described dynamometry handwheel is by forming with coaxial worm gear and the dynamometry worm mesh of dynamometry handwheel; Force cell places the end of dynamometry worm screw, and the other end of force cell is connected with tested motor vehicle through wire rope; Force cell output is connected with data presentation device.
2. performance of parking brake proving installation according to claim 1 is characterized in that, data presentation device comprises button, single-chip microcomputer, LCD, Zigbee wireless communication module; Described single-chip microcomputer adopts the FLASH low-power scm, and described FLASH low-power scm is connected with LCD and Zigbee wireless communication module respectively, and through the Zigbee wireless communication module with data remote to computing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101378777A CN101793612B (en) | 2010-04-02 | 2010-04-02 | Method and system for testing parking brake performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101378777A CN101793612B (en) | 2010-04-02 | 2010-04-02 | Method and system for testing parking brake performance |
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| Publication Number | Publication Date |
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| CN101793612A CN101793612A (en) | 2010-08-04 |
| CN101793612B true CN101793612B (en) | 2012-07-04 |
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| CN2010101378777A Active CN101793612B (en) | 2010-04-02 | 2010-04-02 | Method and system for testing parking brake performance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107727405A (en) * | 2017-09-15 | 2018-02-23 | 张郁森 | The detection method of motor road test performance of parking brake |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305722A (en) * | 2011-05-31 | 2012-01-04 | 东南大学 | Cable force monitoring-based cable system progressive type health monitoring method during support seat generalized displacement |
| CN103712726B (en) * | 2013-12-20 | 2015-09-23 | 长春速建新技术开发有限公司 | outdoor parking force detection system |
| CN104316246A (en) * | 2014-10-28 | 2015-01-28 | 重庆御捷汽车部件有限公司 | Comprehensive detection device for parking inhaul cable stroke change and reset spring force value change |
| CN104614113A (en) * | 2014-12-25 | 2015-05-13 | 钟云亮 | Brake control force meter |
| CN105157989A (en) * | 2015-08-26 | 2015-12-16 | 南通市产品质量监督检验所 | Fully-hydraulic intelligent traction type detection equipment for detecting performance of parking brake |
| CN107021427B (en) * | 2016-06-18 | 2023-07-25 | 上海西派埃自动化仪表工程有限责任公司 | Rope follow-up feedback structure, method and application thereof |
| CN107340140A (en) * | 2016-11-15 | 2017-11-10 | 安徽江淮汽车集团股份有限公司 | Passenger car parking performance test methods and test system |
| CN106404428B (en) * | 2016-12-08 | 2019-04-02 | 芜湖全程智能科技有限公司 | A kind of method of electric parking brake performance test |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6446501B1 (en) * | 2000-09-08 | 2002-09-10 | Smithers Scientific Services, Inc. | Restrained vehicle dynamometer |
| CN2556624Y (en) * | 2002-07-30 | 2003-06-18 | 重庆宗申技术开发研究有限公司 | Parking performance detecting table for motorcycle |
| US7447585B2 (en) * | 2006-05-03 | 2008-11-04 | Tandy Engineering & Associates, Inc. | Stability enhancing system for tow-vehicle towing trailer-assembly with trailer sensors |
| CN201707165U (en) * | 2010-04-02 | 2011-01-12 | 上海西派埃自动化仪表工程有限责任公司 | Parking brake performance testing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107727405A (en) * | 2017-09-15 | 2018-02-23 | 张郁森 | The detection method of motor road test performance of parking brake |
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| CN101793612A (en) | 2010-08-04 |
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