CN103196612B - Automobile brake drum grinding and braking performance detection device - Google Patents
Automobile brake drum grinding and braking performance detection device Download PDFInfo
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- CN103196612B CN103196612B CN201310098623.2A CN201310098623A CN103196612B CN 103196612 B CN103196612 B CN 103196612B CN 201310098623 A CN201310098623 A CN 201310098623A CN 103196612 B CN103196612 B CN 103196612B
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- 238000001514 detection method Methods 0.000 title claims abstract description 12
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- 238000012360 testing method Methods 0.000 abstract description 18
- 239000003638 chemical reducing agent Substances 0.000 abstract description 7
- 238000013016 damping Methods 0.000 description 22
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000007306 turnover Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 206010039509 Scab Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000013523 data management Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000036651 mood Effects 0.000 description 1
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- 238000012163 sequencing technique Methods 0.000 description 1
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Abstract
The invention discloses an automobile brake drum grinding and braking performance detection device and belongs to the field of automobile testing. The automobile brake drum grinding and braking performance detection device comprises two rotary drums which are arranged in parallel, the heads of the rotary drums align at the tails of the rotary drums, end portions of the rotary drums are supported on a frame through bearings, a lifting jack is arranged between the two rotary drums, a center shaft of one rotary drum is connected with a motor through a reducer, a pressure sensor is installed on the reducer, and the motor is connected with a frequency changer. By means of the automobile brake drum grinding and braking performance detection device, braking efficiency of an automobile drum brake can be improved, and work efficiency of brake drum grinding and braking force detection can be improved.
Description
Technical field
The present invention relates to a kind of checkout equipment of automobile brake, belong to vehicle testing field, especially a kind ofly for new car, dispatch from the factory or the automobile of changing braking rotary drum carries out the device that break-in and car load, braking ability that each is taken turns detect.
Background technology
In automobile safety performance, braking ability, as the leading indicator detecting, has clear and definite requirement and detection method in GB21861 standard.
The quality of automobile brake perfrmance is main relevant to automotive brake usefulness, and brake bush is the bigger the better with the contact area of braking rotary drum (dish).In < < vehicle repair technical standard > > JT3101-81, stipulate that its contact area should be no less than 5O%, newly dispatch from the factory and brake the automobile of rotary drum automobile or maintenance renewal drum brake, except adjusting the position of friction parts in detent, mutually outside gap, also must force break-in, to increase its contact area, improve contact condition, bring into play to greatest extent the braking ability of wheel drag.
At present, the detent break-in of automobile is by setting out on a journey or in frame, detent being forced to break-in, damping force test is generally used anti-force rolling brake testing platform or dull and stereotyped braking to carry out damping force test, the break-in of setting out on a journey is subject to the factors such as road, weather, human pilot mood to affect larger, and tens kilometers or kilometer up to a hundred travel, spend a large amount of oil plant, time and manpower, and the size of break-in power, running-in effect all cannot quantitatively be controlled and can only carry out by rule of thumb, frame break-in is to improve one of effectively the most most economical means of automobile brake perfrmance.General motor vehicle, after break-in, needs in addition upper braking rack to detect its braking ability, to determine that it reaches the requirement of dispatching from the factory.
Summary of the invention
The technical problem to be solved in the present invention is to provide the break-in of a kind of automobile brake rotary drum and braking performance detector, utilize this device can brake rotary drum break-in, guarantee detent brake efficiency, and can carry out braking ability detection, greatly improve the work efficiency of the break-in of braking rotary drum, braking forces measuring.
For solving the problems of the technologies described above, the technical solution used in the present invention is: the break-in of a kind of automobile brake rotary drum and braking performance detector, it is characterized in that comprising two cylinders that are set up in parallel, the head and the tail alignment of cylinder, end all by bearings in frame, between two cylinders, be provided with lifting jack, the central shaft of one of them cylinder is connected with motor by speed reduction unit, on described speed reduction unit, pressure transducer is installed
Said structure is described further, and described motor is connected with frequency converter.Frequency converter is used for controlling motor speed, realizes the detection of many rotating speeds, improves applicability of the present invention.
Said structure is described further, and the cylinder outside being connected with speed reduction unit is provided with the gear that can rotate along this drum central axis and rolls.Described gear rolls in cylinder arranged outside, plays the effect that stops wheel, prevents that, in break-in test process, automobile flies away from because drum rotation speed is too high, and protection automobile is gone out equipment because of accident.
Said structure is described further, between described lifting jack and gear roll, is provided with link gear.Described link gear can connect or linkage assembly for lever, also can realize by hydraulic mechanism both interlocks.
Said structure is described further, described link gear is comprised of master connecting-rod, first connecting rod, second connecting rod and third connecting rod, one end and the holder of described master connecting-rod are hinged, the other end is connected with second connecting rod and third connecting rod, one end of first connecting rod and the middle part of master connecting-rod are hinged, the bottom-hinged of the other end and lifting jack, third connecting rod and gear roll as being rigidly connected.Lifting jack is for car assisted turnover monitor station, during break-in, gear rolls and prevents that automobile from leaving frame, lifting jack rolls and links with gear, when falling, lifting jack drive second connecting rod around holder bearing pin, to rotate downwards by first connecting rod, second connecting rod makes third connecting rod rotate around drum central axis by master connecting-rod, wherein gear rolls with third connecting rod relative position constantly, and now gear rolls rise; During Lifter Raised, in like manner keep off rolling automatically and fall, the present invention rolls interlock by link gear lifting jack and gear, realizes the lifting that lifting jack and gear roll.
Said structure is described further, between described speed reduction unit and pressure transducer, by dynamometry lever, connects.In the present invention, dynamometry lever and pressure transducer have formed braking force test device, that pressure transducer transmits dynamometry lever, be transformed into electric signal to the proportional power of damping force (or displacement) and be transported to acquisition system and obtain damping force data, realize damping force test.
Said structure is described further, and the end face of described lifting jack is the concave face of " V " font.In the present invention, during Lifter Raised, contact with automotive wheel, realize the full contact jack-up of automotive wheel, facilitate automobile turnover monitor station.
Said structure is described further, and the break-in of described automobile brake rotary drum and braking performance detector are 2 covers, are symmetrical set, and its intermediate roll mates with automobile double trailing wheel, form the braking rotary drum break-in of automobile double trailing wheel and braking ability detection system.This technical scheme is the optimum embodiment of the present invention, and current automobile back wheel braking ability is carried out break-in, detects one and carry out.
The beneficial effect that adopts technique scheme to produce is: in the present invention, two cylinders of available Frequency Converter Control driven by motor rotate, realize simulation road examination condition automobile front and back wheel detent is forced to break-in, add damping force size by instrument feedback information, can intuitively determine, with best damping force, carry out break-in, and can real-time implementation break-in function and the switching of damping force test function.After break-in, handoff functionality directly carries out damping force test, to determine its running-in effect, without moving machine motor-car.Break-in power, running-in time all can accurately be controlled, and damping force is directly tested, and work efficiency is high.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is structure connection diagram of the present invention;
Fig. 2 is the structural representation of mechanical stand part in Fig. 1;
Fig. 3 keeps off the lower view of roll-offing in link gear;
Fig. 4 is that in link gear, gear rolls rise view;
Fig. 5 is the data acquisition and processing (DAP) system of damping force;
Fig. 6 is the structural representation (arrow is for entering car direction) of the braking rotary drum break-in of automobile double trailing wheel and braking ability detection system;
Wherein: 1, cylinder, 2, lifting jack, 3, speed reduction unit, 4, pressure transducer, 5, motor, 6, frequency converter, 7, gear rolls, and 8, frame, 9, link gear, 9-1, master connecting-rod, 9-2, first connecting rod, 9-3, second connecting rod, 9-4, third connecting rod, 10, holder, 11, automotive wheel.
Embodiment
1 is known with reference to the accompanying drawings, and the present invention is specifically related to the break-in of a kind of automobile brake rotary drum and braking performance detector, and this device is comprised of mechanical stand and electric software two parts.Wherein mechanical stand by cylinder 1, lifting jack 2, speed reduction unit 3, motor 5, shelves roll 7, frame 8 forms, the left and right sides is symmetrical, cylinder 1 surface adopts scab technique or groove to process, and improves attachment coefficient; Pressure transducer 4 is housed on reducer shell, for the monitoring of break-in power and damping force test.
Electrical system is comprised of frequency converter 6, control system, computer software etc.By frequency converter 6, can adjust drum rotation speed, the speed while testing to adapt to break-in speed, the damping force of different vehicle; Control system complete motor rotation and stop, the collection of lifting jack lifting, damping force signal; Computer software completes the functions such as sequencing control, break-in power and damping force demonstration, report printing, the detection data management of whole system.
Fig. 2 is mechanical stage shelf structure schematic diagram, on two cylinders 1, is provided with automotive wheel 11, and lifting jack 2 leaves automotive wheel 11 surfaces, and under the drive of link gear 9, gear rolls 7 rises simultaneously, in the process of break-in, guarantees that gear rolls 7 and do not leave cylinder 1 surface.
In accompanying drawing 3 and 4, can find out the composition of link gear 9, lifting jack 2 is for car assisted turnover monitor station, during break-in, gear rolls 7 and prevents that automobile from leaving frame 8, lifting jack 2 rolls 7 with gear and links, and when lifting jack 7 is fallen, by first connecting rod 9-2, drives second connecting rod 9-3 around the bearing pin of holder 10, to rotate downwards, and second connecting rod 9-3 makes third connecting rod 9-3 rotate around cylinder 1 axle center by master connecting-rod 9-1, wherein gear rolls 1 constantly with third connecting rod 9-3 relative position, and gear rolls 1 rise; Lifting jack 2 in like manner keeps off while rising and rolls 7 and automatically fall, and accompanying drawing 3 and accompanying drawing 4 have provided respectively gear and rolled 7 view of falling and rising.
The present invention in use, that two covering devices are placed side by side, two trailing wheels of testing automobile, as shown in Figure 6, automobile along the direction of arrow by driving into frame 8 on gradient plate, vehicle puts in place, lifting jack 2 is fallen, starting frequency converter 6 operates under power frequency state, motor 5 drives cylinder 1 by belt pulley, speed reduction unit 3, and cylinder 1 rotates with linear resonance surface velocity 10km/h～15km/h, suitably steps on automobile brake pedal, make to brake pad and inner cylinder face grinding mutually in relative motion of braking rotary drum, its contact area is increased.Its mill platform time can according to circumstances preset, and break-in is complete, enters damping force test pattern, Frequency Converter Control cylinder rotates with linear resonance surface velocity 2.5km/h, draw car person and carry out damping force test according to prompting, be completed, according to result, judge whether to carry out the test of break-in again.
The collection of damping force generally adopts pressure-strain sensor, and power supply is+l2V, and foil gauge pressurized produces voltage signal, and range of signal is 0～24mv.Signal voltage size is directly proportional to pressure, and linear.Because of the electric signal that pressure transducer 4 directly sends more weak, easily distortion in circuit transmitting procedure.Therefore the signal in pressure transducer 4 outputs need be through amplifying, amplifying signal is inputted via main frame conditioning plate, after hardware filtering, send into the A/D plate in computing machine, by A/D plate, convert digital signal to, by software, be converted to voltage signal again and be convenient to demonstration directly perceived, the voltage that software basis has been demarcated in advance and the relation between value solve and obtain damping force value.The data acquisition and processing (DAP) of damping force is shown in shown in accompanying drawing 5.
Braking force test device is mainly comprised of dynamometry lever and pressure transducer 4.Dynamometry lever one end contacts with pressure transducer 4, the other end is connected with reducer shell, when tested wheel braking or break-in, motor reducer starts, and drives cylinder to rotate, and cylinder 1 driving automobile wheel 11 rotates, when break-in or braking test, draw car person and step on brake pedal, the friction force along cylinder surface that produce to stop cylinder to rotate between wheel and cylinder, this power make dynamometry lever and reducer shell will together with around drive roll (or around reducer output shaft, motor shaft) axis oscillating.That sensor transmits dynamometry lever, be transformed into electric signal to the proportional power of damping force (or displacement) and be transported to acquisition system and obtain damping force data.
Claims (5)
1. automobile brake rotary drum break-in and braking performance detector, it is characterized in that comprising two cylinders that are set up in parallel (1), the head and the tail alignment of cylinder (1), end all by bearings in frame (8), between two cylinders (1), be provided with lifting jack (2), the central shaft of one of them cylinder (1) is connected with motor (5) by speed reduction unit (3), pressure transducer (4) is installed on described speed reduction unit (3), cylinder (1) outside being connected with speed reduction unit (3) is provided with the gear that can rotate along this drum central axis and rolls (7), described lifting jack (2) and gear roll and between (7), are provided with link gear (9),
Described link gear (9) is comprised of master connecting-rod (9-1), first connecting rod (9-2), second connecting rod (9-3) and third connecting rod (9-4), one end of described master connecting-rod (9-1) and holder (10) are hinged, the other end is connected with second connecting rod (9-3) and third connecting rod (9-4), the middle part of one end of first connecting rod (9-2) and master connecting-rod (9-1) is hinged, the bottom-hinged of the other end and lifting jack (2), third connecting rod (9-4) rolls (7) for being rigidly connected with gear.
2. automobile brake rotary drum according to claim 1 break-in and braking performance detector, is characterized in that described motor (5) is connected with frequency converter (6).
3. automobile brake rotary drum according to claim 1 break-in and braking performance detector, is characterized in that by dynamometry lever, connecting between described speed reduction unit (3) and pressure transducer (4).
4. automobile brake rotary drum according to claim 1 break-in and braking performance detector, is characterized in that the concave face that the end face of described lifting jack (2) is " V " font.
5. according to the break-in of automobile brake rotary drum and braking performance detector described in any one in claim 1-4, it is characterized in that the break-in of described automobile brake rotary drum and braking performance detector are 2 covers, be symmetrical set, its intermediate roll (1) mates with automobile double trailing wheel, forms the braking rotary drum break-in of automobile double trailing wheel and braking ability detection system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310098623.2A CN103196612B (en) | 2013-03-26 | 2013-03-26 | Automobile brake drum grinding and braking performance detection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310098623.2A CN103196612B (en) | 2013-03-26 | 2013-03-26 | Automobile brake drum grinding and braking performance detection device |
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| CN103196612A CN103196612A (en) | 2013-07-10 |
| CN103196612B true CN103196612B (en) | 2014-12-10 |
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| CN201310098623.2A Expired - Fee Related CN103196612B (en) | 2013-03-26 | 2013-03-26 | Automobile brake drum grinding and braking performance detection device |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108318259B (en) * | 2018-05-17 | 2023-09-22 | 吉林大学 | Performance test stand for automatic emergency braking system of commercial and passenger dual-purpose vehicle |
| CN110031144B (en) * | 2019-05-20 | 2023-11-17 | 江苏省特种设备安全监督检验研究院 | Multifunctional static braking torque testing device and testing method |
| CN110954430A (en) * | 2019-12-27 | 2020-04-03 | 合肥青冠机电科技有限公司 | Brake abrasive disc performance detection device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2376625Y (en) * | 1999-05-06 | 2000-05-03 | 济南微机应用研究所 | Brake property test platform for motor vehicle |
| KR20020094217A (en) * | 2001-06-04 | 2002-12-18 | 주식회사 만도 | Unity brake performance tester |
| CN101701875A (en) * | 2009-11-23 | 2010-05-05 | 浙江大学 | Composite detecting platform for combination property of motor vehicle |
| CN101907503A (en) * | 2010-06-29 | 2010-12-08 | 浙江大学 | Hydraulic motor driven drum-type braking test device |
| CN202229735U (en) * | 2011-08-23 | 2012-05-23 | 北京新联铁科技发展有限公司 | Automatic size measuring machine of journal of high power locomotive |
| CN102901636A (en) * | 2012-09-24 | 2013-01-30 | 中国人民解放军总后勤部军事交通运输研究所 | Single-shaft counter-force type double-rotary-drum detecting and testing platform of inertia braking system of trailer |
| CN203132756U (en) * | 2013-03-26 | 2013-08-14 | 石家庄华燕交通科技有限公司 | Automobile brake rotary drum running-in and brake performance testing apparatus |
-
2013
- 2013-03-26 CN CN201310098623.2A patent/CN103196612B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2376625Y (en) * | 1999-05-06 | 2000-05-03 | 济南微机应用研究所 | Brake property test platform for motor vehicle |
| KR20020094217A (en) * | 2001-06-04 | 2002-12-18 | 주식회사 만도 | Unity brake performance tester |
| CN101701875A (en) * | 2009-11-23 | 2010-05-05 | 浙江大学 | Composite detecting platform for combination property of motor vehicle |
| CN101907503A (en) * | 2010-06-29 | 2010-12-08 | 浙江大学 | Hydraulic motor driven drum-type braking test device |
| CN202229735U (en) * | 2011-08-23 | 2012-05-23 | 北京新联铁科技发展有限公司 | Automatic size measuring machine of journal of high power locomotive |
| CN102901636A (en) * | 2012-09-24 | 2013-01-30 | 中国人民解放军总后勤部军事交通运输研究所 | Single-shaft counter-force type double-rotary-drum detecting and testing platform of inertia braking system of trailer |
| CN203132756U (en) * | 2013-03-26 | 2013-08-14 | 石家庄华燕交通科技有限公司 | Automobile brake rotary drum running-in and brake performance testing apparatus |
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| CN103196612A (en) | 2013-07-10 |
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