CN100335881C - Test-bed for testing performance of vibration damping belt pulley wheel - Google Patents
Test-bed for testing performance of vibration damping belt pulley wheel Download PDFInfo
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- CN100335881C CN100335881C CNB2004100610028A CN200410061002A CN100335881C CN 100335881 C CN100335881 C CN 100335881C CN B2004100610028 A CNB2004100610028 A CN B2004100610028A CN 200410061002 A CN200410061002 A CN 200410061002A CN 100335881 C CN100335881 C CN 100335881C
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- pulley
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- belt pulley
- damper pulley
- laser displacement
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Abstract
The present invention relates to a test bench for testing performance of a vibration damping belt pulley, which comprises a bench frame (1), a motor (2), a tested vibration damping belt pulley (9) on an axis of the motor, a load (3), a belt pulley (303) on an axis of the load, and a tension pulley, wherein marks (904, 903) are respectively arranged on the side walls of an outer ring (902) and an inner ring (901) of the tested vibration damping belt pulley (9); mark sensors (601, 602) for sensing the marks (903, 904), a laser displacement sensor (501) for testing the radial displacement of the tested vibration damping belt pulley (9), and a laser displacement sensor (502) for testing the axial displacement of the tested vibration damping belt pulley (9); the output end of each sensor is connected with a computer system. The test bench of the present invention can simulate the actual running condition of the vibration damping belt pulley, detect parameters, such as resonance amplitude of the pulley faces, relative torsion of the inner and the outer rings, etc., by the sensors, and output the parameters obtained by tests to the computer system for analyzing and comparing the parameters.
Description
Technical field
The present invention relates to automobile, particularly in the Automobile Design process, be used for testing equipment that the performance that the damper pulley on the automobile uses is tested.
Background technology
Automobile in the process of moving because the natural frequency difference of inner each several part, the imbalance of wheel, engine and movement system, and some other factor very easily causes car load and local judder.This vibration is affected dynamic property, economy, comfortableness and the security of automobile.
The motor car engine accessory wheel system is meant a system that drives annex work such as water pump, fan, generator, compressor of air conditioner by main shaft wheel.As the main shaft wheel of driving member, directly to join with bent axle, its smoothness of operation directly affects the duty of annex and the work quality of engine.But because of Uneven road, and the gaseous-pressure in the cylinder and the unbalance inertia force cyclical variation of movement parts all can make crankshaft system and engine complete machine produce vibration during running car.Bent axle is subjected to periodically variable perturbed force effect meeting to make engine and kinematic train produce strong torsional oscillation.This torsional oscillation is as a kind of vibrational excitation source, and the work quality and life-span of other kinematic train produced a very large impact.
The use of damper pulley, exactly for the influence of the excited vibration that reduces engine and bent axle to accessory wheel system, the impact of the generation of buffering engine when exciting.Damper pulley is a kind of combined wheels, its structure as shown in Figure 3, it is made up of the vibration isolation rubber 905 between inside and outside circle 901,902 and the inside and outside circle.Outer ring 902 is a steel spinning spare, and inner ring 901 is a stamping parts.Damper pulley the is different from common belt pulley circle vibration isolation rubber 905 that has been exactly many, it is the key of whole damper pulley, it can reduce the resonance amplitude in the belt pulley operation process, the impact when slowing down speed change.
Vibration isolation rubber is to utilize caoutchouc elasticity, and it acts on widely used metal spring (metal spring can only utilize the elasticity of a direction usually) and comparing, and has three-dimensional (vertical, horizontal, vertical) spring constant.The geomery of suitable selection vibration-proof rubber can make the spring constant of three directions reach desirable numerical value.Simultaneously, in order to reduce the amplitude that resonance is, and make by impacting the free vibration attenuation that produces and stop as early as possible, spring need possess attenuation.The interior friction ratio metal spring of vulcanized rubber is big more than 1000 times, rubber plays attenuation by interior friction, the interior friction of rubber be by between rubber molecule and the molecule and the interaction between rubber molecule and the filling agent produce, therefore, be specially adapted to dither.
Damper pulley can be used for water pump wheel, fan wheel, main shaft wheel, compressor of air conditioner tensioner belt wheel, vibration damper, sensor belt wheel, automobile brake sheet of automobile etc.From present manufacturing enterprise's applicable cases, damper pulley then because technology and process conditions restriction still are in the stage of fumbling, and main cause is the similar shock-absorbing spring of the damping mechanism of rubber, guarantee optimum efficiency, needs to select suitable ratio of damping C
P, and lack ratio of damping C before design at present and the production unit
PMeans of testing can't detect the damper pulley performance of design.
Summary of the invention
Technical matters to be solved by this invention is: a kind of damper pulley property test platform is provided, this testing table can be simulated the actual operating state of damper pulley, and will be, and measured parameter be exported to the computer system that is used for parameter is analyzed comparison by parameters such as sensor wheel face resonance amplitude, Internal and external cycle reverse relatively.
The present invention solves the problems of the technologies described above the technical scheme that is adopted:
The damper pulley property test platform, it comprises belt pulley, stretching pulley on tested damper pulley, load and the axle thereof on stand, motor and the axle thereof; Tested damper pulley, belt pulley, stretching pulley are formed train by belt; Be respectively equipped with second sign, first sign on the outer ring of tested damper pulley and the sidewall of inner ring; Stand is provided with first index transducer, second index transducer that is used for second sign on the sensing outer ring, first laser displacement sensor that is used to measure tested damper pulley radial displacement that are used on the sensing inner ring first sign, is used to measure second laser displacement sensor of tested damper pulley axial displacement; The output terminal of each sensor is connected with computer system.
In the such scheme, also be provided with the infrared temperature-test sensor that is used to measure tested damper pulley temperature on the stand, the output terminal of infrared temperature-test sensor is connected with computer system.
In the such scheme, load is made up of generator and resistance box, and the output terminal of generator is connected with the input end of resistance box.
In the such scheme, stand comprises panel, and motor, generator, resistance box are arranged on the below of panel; Train and each sensor are arranged on the top of panel.
In the such scheme, first index transducer, second index transducer, first laser displacement sensor, second laser displacement sensor, infrared temperature-test sensor are arranged on the stand by support; Support is made up of pole and cantilever, and the upper end of pole is connected with cantilever, and the lower end of pole is connected with stand.
In the such scheme, first laser displacement sensor, second laser displacement sensor are arranged on the support, first laser displacement sensor that is used to measure tested damper pulley radial displacement is arranged on pole, and second laser displacement sensor that is used to measure tested damper pulley axial displacement is arranged on the cantilever below.
In the such scheme, first index transducer, second index transducer are separately positioned on two supports, and they all are arranged on the cantilever below.
In the such scheme, infrared temperature-test sensor is arranged on the cantilever below.
In the such scheme, motor is a frequency control motor, and frequency control motor is by computer control.
Because it is a lot of to influence the parameter of belt pulley performance, the present invention mainly need to select the parameter of measurement based on the consideration of following several aspects:
1) amplitude versus frequency characte of damper pulley in operation process and the stationarity of engine running, the serviceable life of damper pulley and the noise of engine are closely related.So must detect the vibration frequency and the amplitude of belt pulley.
2) because vibration isolation rubber is an elastomeric objects, when the damper pulley rotating speed arrives certain value, will produces between the Internal and external cycle and reverse or relatively rotate, promptly phase differential appears in Internal and external cycle.Suitable reverses relatively to reducing the vibration of belt pulley, shock absorbing is good, but windup-degree is excessive, perhaps in the process of running up, occur continuously between the Internal and external cycle relatively rotating, to the safety of belt pulley and even engine be made a big impact, must detect the phase differential between the damper pulley Internal and external cycle for this reason.
3) because damper pulley is to run up, so, certainly will cause the belt pulley temperature to raise along with the lengthening of working time.Too high temperature will cause the aging of internal layer rubber ring, also can influence the serviceable life of polywedge bet.So take certain way to detect the temperature of belt pulley, with convenient operating condition and temperature and temperature and a series of relations between serviceable life of analyzing belt pulley.
Therefore, the present invention selects to measure the frequency of the excited vibration of belt pulley when operation and amplitude, the phase differential of belt pulley Internal and external cycle, the temperature of belt pulley, and certainly, testing table of the present invention also can be used to measure other parameter.
The principle of work of testing table of the present invention is: testing table drives tested damper pulley by the motor outputting power, tested damper pulley is formed train by belt with stretching pulley, load driven wheel, drive load operation, the operation of simulation damper pulley, laser displacement sensor is used for measuring amplitude, frequency characteristic and the stationarity of damper pulley in operation process.Index transducer is measured reversing or relatively rotating of producing between the Internal and external cycle, and promptly phase differential appears in Internal and external cycle.The output terminal of each sensor is connected with computer system, provides parameter to computer system, carries out data analysis for computing machine and handles.
The present invention be advantageous in that:
1, because belt pulley is to run up, and the thermometric mode that adopt contact is the comparison difficulty, so the present invention adopts the contactless infrared temperature-test sensor with degree of precision to measure the temperature of damper pulley.
2, motor adopts frequency control motor, computing machine can change output speed and moment of torsion by the frequency that changes motor, the running of control motor comes the different operating conditions such as startup, acceleration, deceleration and normal operation of simulated engine, the ruuning situation of simulated engine very truly, it is more accurate so just to make that various kinds of sensors detects the damper pulley performance parameter, and, the servo buncher running accuracy of frequency conversion height, running is steadily.
3, load is made up of generator and resistance box, can change by the resistance that changes resistance box load size, the ruuning situation of simulated automotive truly.
4, the present invention is simple in structure, and cost is low.
Description of drawings
Fig. 1 is an embodiment of the invention structural front view
Fig. 2 is an embodiment of the invention structure vertical view
Fig. 3 is the location diagram of tested damper pulley and sensor
Fig. 4 is the location diagram of tested damper pulley and sensor
Fig. 5 is the vertical view of tested damper pulley
Fig. 6 is a computer system signal Processing theory diagram
Embodiment
As shown in Figure 1, 2, embodiment of the invention testing table comprises belt pulley 303, the stretching pulley 4 on tested damper pulley 9, load 3 and the axle thereof on stand 1, motor 2 and the axle thereof.Motor 2 is a frequency control motor, and frequency control motor is by computer control.Tested damper pulley 9, belt pulley 303, stretching pulley 4 are formed train by belt 10.As shown in Figure 5, draw white line second sign 904, first sign 903 at the tested damper pulley of a mistake center on the wheel face of the outer ring 902 of tested damper pulley 9 and inner ring 901; Stand 1 is provided with first index transducer 601, second index transducer 602 that is used for second sign 904 on the sensing outer ring 902, first laser displacement sensor 501 that is used to measure tested damper pulley 9 radial displacements, second laser displacement sensor 502 that is used to measure tested damper pulley 9 axial displacements that is used for first sign 903 on the sensing inner ring 901, the infrared temperature-test sensor 7 that is used to measure tested damper pulley 9 temperature.The output terminal of each sensor is connected with computer system.
Variable-frequency motor can be controlled by servo controller, also can control by host computer, and host computer and controller carry out two-way communication by the RS232 serial ports.The embodiment of the invention is controlled the operation of motor by host computer, like this can more convenient ruuning situation of testing engine under the different operating modes exactly.Communication between host computer and the frequency-variable controller realizes with the VC++ language.
Shown in Fig. 3,4, index transducer 601,602, laser displacement sensor 501,502, infrared temperature-test sensor 7 are arranged on the stand 1 by support 8; Support 8 is made up of pole 801 and cantilever 802, and the upper end of pole 801 is connected with cantilever 802, and the lower end of pole 801 is connected with stand 1.Two laser displacement sensors 501,502 are arranged on the support 8, the laser displacement sensor 501 that is used to measure tested damper pulley 9 radial displacements is arranged on pole 801, and the laser displacement sensor 502 that is used to measure tested damper pulley 9 axial displacements is arranged on cantilever 802 belows.Two index transducers 601,602 are separately positioned on two supports 8, and they all are arranged on cantilever 802 belows; The test beams of two index transducers 601,602 is aimed at the white line sign 903,904 on the inside and outside circle 901,902 respectively.Infrared temperature-test sensor 7 is arranged on cantilever 802 belows.
Whole damper pulley Performance Test System comprises testing table of the present invention and computer system, as shown in Figure 6, the output signal of the infrared temperature-test sensor 7 on the testing table, laser displacement sensor 501,502 is passed through signal conditioning circuit earlier, carrying out filtering amplifies, be divided into two-way then, one the tunnel advances voltage table often shows, and the A/D conversion is done on another road, enters computing machine at last and does the related data processing and analyze.
On test-bed, the situation that the embodiment of the invention adopts the tested damper pulley 9 of German import laser displacement sensor (model OD25-05) test to vibrate in rotation process, this laser sensor measuring accuracy height, in measurement range, can reach the μ m order of magnitude, be output as analog quantity, can the various vibrational states of real time reaction belt pulley in rotation process.Laser displacement sensor is electric current output, and scope is 4-20mA.Utilize the RCV420 chip that it is transformed to 0-5V, pass through zeroing circuit then, the A/D conversion, the input computing machine is handled.
Embodiment of the invention infrared temperature-test sensor 7 adopts the infrared temperature-test sensor of model IRt/c.01-K, and it is analog quantity voltage output, scope 0-5V.For such output, can directly import the A/D card, do the A/D conversion, carry out data analysis then on computers and handle.
Will detect belt pulley Internal and external cycle phase differential accurately acquires a certain degree of difficulty, the present invention draws a white line sign 903,904 crossing tested damper pulley 9 centers on wheel face, allow the test beams of two index transducers 601,602 aim at white line sign 903,904 on the Internal and external cycle respectively.In tested like this damper pulley 9 rotating process, index transducer whenever detects markings and just sends a pulse signal (as exporting a high level).When stall or when slowly running, two index transducers produce high level simultaneously.When reversing appearred in Internal and external cycle, the time that two index transducers produce high level just had a mistiming, utilized this mistiming can calculate phase differential between the Internal and external cycle.The high-precision phase measurement circuit that the embodiment of the invention adopts phaselocked loop 4046 to form, the phase differential precision of measuring two signals can reach 0.1 degree.
The embodiment of the invention can simulated engine various operating modes, it is complete to have a measurement parameter, characteristics such as measuring accuracy height.In actual use, can react the various parameters of belt pulley very really, provide of great value data for designing and develop damper pulley later on.
Claims (9)
1, damper pulley property test platform is characterized in that: it comprises belt pulley (303), stretching pulley (4) on tested damper pulley (9), load (3) and the axle thereof on stand (1), motor (2) and the axle thereof; Tested damper pulley (9), belt pulley (303), stretching pulley (4) are formed train by belt (10); Be respectively equipped with second sign (904), first sign (903) on the outer ring (902) of tested damper pulley (9) and the sidewall of inner ring (901); Stand (1) is provided with first index transducer (601) that is used for last first sign (903) of sensing inner ring (901), be used for second index transducer (602), first laser displacement sensor (501) that is used to measure tested damper pulley (9) radial displacement that sensing outer ring (902) last second indicates (904), be used to measure second laser displacement sensor (502) of tested damper pulley (9) axial displacement; The output terminal of each sensor is connected with computer system.
2, testing table as claimed in claim 1 is characterized in that: also be provided with the infrared temperature-test sensor (7) that is used to measure tested damper pulley (9) temperature on the stand (1), the output terminal of infrared temperature-test sensor (7) is connected with computer system.
3, testing table as claimed in claim 1 is characterized in that: load (3) is made up of generator (302) and resistance box (301), and the output terminal of generator (302) is connected with the input end of resistance box (301).
4, testing table as claimed in claim 3 is characterized in that: stand (1) comprises panel (101); Motor (2), generator (302), resistance box (301) are arranged on the below of panel (101); Train and each sensor are arranged on the top of panel (101).
5, testing table as claimed in claim 2 is characterized in that: first index transducer (601), second index transducer (602), first laser displacement sensor (501), second laser displacement sensor (502), infrared temperature-test sensor (7) are arranged on the stand (1) by support (8); Support (8) is made up of pole (801) and cantilever (802), and the upper end of pole (801) is connected with cantilever (802), and the lower end of pole (801) is connected with stand (1).
6, testing table as claimed in claim 5, it is characterized in that: first laser displacement sensor (501), second laser displacement sensor (502) are arranged on the support (8), first laser displacement sensor (501) that is used to measure tested damper pulley (9) radial displacement is arranged on pole (801), and second laser displacement sensor (502) that is used to measure tested damper pulley (9) axial displacement is arranged on cantilever (802) below.
7, testing table as claimed in claim 5 is characterized in that: first index transducer (601), second index transducer (602) are separately positioned on two supports (8), and they all are arranged on cantilever (802) below.
8, testing table as claimed in claim 5 is characterized in that: infrared temperature-test sensor (7) is arranged on cantilever (802) below.
9, testing table as claimed in claim 1 is characterized in that: motor (2) is a frequency control motor, and frequency control motor is by computer control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100610028A CN100335881C (en) | 2004-10-26 | 2004-10-26 | Test-bed for testing performance of vibration damping belt pulley wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100610028A CN100335881C (en) | 2004-10-26 | 2004-10-26 | Test-bed for testing performance of vibration damping belt pulley wheel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1601248A CN1601248A (en) | 2005-03-30 |
| CN100335881C true CN100335881C (en) | 2007-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100610028A Expired - Fee Related CN100335881C (en) | 2004-10-26 | 2004-10-26 | Test-bed for testing performance of vibration damping belt pulley wheel |
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| CN101963547B (en) * | 2010-09-30 | 2011-12-14 | 福建工程学院 | Special dynamic performance measuring and control system for vehicle rubber shock absorber |
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| CN104215433A (en) * | 2013-05-29 | 2014-12-17 | 纬创资通股份有限公司 | Belt pulley detection device and belt pulley detection method |
| CN103698125B (en) * | 2013-12-19 | 2016-06-22 | 孝感市宝龙电子有限公司 | Belt pulley high temperature and high speed endurance torsion test machine |
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| CN106989930B (en) * | 2017-04-21 | 2019-07-19 | 上汽通用汽车有限公司 | The belt stretcher of automobile engine wheel train part noise fest platform |
| CN108469339B (en) * | 2018-03-08 | 2019-10-25 | 武汉理工大学 | Integrated form damper pulley characteristic test apparatus |
| WO2022016319A1 (en) * | 2020-07-20 | 2022-01-27 | 宁波吉利罗佑发动机零部件有限公司 | Belt pulley apparatus, and belt pulley failure monitoring system and monitoring method |
| CN112945114B (en) * | 2021-01-15 | 2023-04-07 | 东风柳州汽车有限公司 | Belt elasticity detection mechanism and car |
| CN116481903B (en) * | 2023-04-23 | 2024-01-26 | 江苏谷瑞斯机电工程有限公司 | Comprehensive performance testing device for belt of air cushion conveyor |
| CN117074030B (en) * | 2023-10-18 | 2024-02-23 | 沈阳精锐工业科技有限公司 | Automobile engine crankshaft torsional vibration testing device |
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|---|---|---|---|---|
| DE3430298A1 (en) * | 1984-08-17 | 1986-02-27 | Goetze Ag, 5093 Burscheid | Vibration-damping belt pulley |
| JPH04151046A (en) * | 1990-10-11 | 1992-05-25 | Toyoda Mach Works Ltd | Damper pulley |
| CN2375821Y (en) * | 1998-12-21 | 2000-04-26 | 储志科 | Shock-proof crank pulley |
| CN2494894Y (en) * | 2001-08-10 | 2002-06-12 | 广元市联动机械有限责任公司 | Flexible driving leather wheel |
-
2004
- 2004-10-26 CN CNB2004100610028A patent/CN100335881C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3430298A1 (en) * | 1984-08-17 | 1986-02-27 | Goetze Ag, 5093 Burscheid | Vibration-damping belt pulley |
| JPH04151046A (en) * | 1990-10-11 | 1992-05-25 | Toyoda Mach Works Ltd | Damper pulley |
| CN2375821Y (en) * | 1998-12-21 | 2000-04-26 | 储志科 | Shock-proof crank pulley |
| CN2494894Y (en) * | 2001-08-10 | 2002-06-12 | 广元市联动机械有限责任公司 | Flexible driving leather wheel |
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| CN1601248A (en) | 2005-03-30 |
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