CN201488923U - Equipment used for testing vibration property of air spring - Google Patents
Equipment used for testing vibration property of air spring Download PDFInfo
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- CN201488923U CN201488923U CN2009201947253U CN200920194725U CN201488923U CN 201488923 U CN201488923 U CN 201488923U CN 2009201947253 U CN2009201947253 U CN 2009201947253U CN 200920194725 U CN200920194725 U CN 200920194725U CN 201488923 U CN201488923 U CN 201488923U
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- air spring
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Abstract
The utility model discloses equipment used for testing the vibration property of an air spring. The utility model aims to solve the technical problem by providing the equipment used for testing the vibration property of an air spring which has wide working frequency and exciting force ranges, is convenient for flexibly selecting testing places and can calibrate parameters before an experiment. The utility model adopts the technical scheme that the equipment used for testing the vibration property of an air spring comprises an electrodynamic vibration exciter, a laser displacement sensor, an acceleration sensor and a force sensor; a signal generator and a power amplifier are connected with the electrodynamic vibration exciter through electrical signals in sequence; the laser displacement sensor, the acceleration sensor and the force sensor transmit the signals to a charge amplifier to perform amplification, then the signals are stored in a computer; the electrodynamic vibration exciter is arranged in a hanging way; and the signals of the charge amplifier enter a data acquisition system and then enter the computer through the data acquisition system.
Description
Technical field
The utility model relates to a kind of vibration characteristics testing tool, particularly a kind of equipment of testing vibration performance of air spring.
Background technology
Present testing of materials testing table industrialization, supporting test macro is also fairly perfect simultaneously, and also there are tens families in the producer and the R﹠D institution that produce resiliometer both at home and abroad.Its schematic diagram as shown in Figure 1.
Position up till now, air spring are detected the test exciting mode and are mainly comprised: mechanical vibration mode, electric liquid mode of vibration, electric vibrating mode.
Electrodynamic type vibration is according to the electromagnetic induction principle design, when electrical conductor is in the effect of the power that will be subjected in the stationary magnetic field, will produce vibration when passing to exchange current in the conductor.The drive coil of shaking table formally is in the space of a high magnetic flux density, when the vibration signal of needs produces and leads on the drive coil after power amplifier amplifies from signal generator or vibration controller, at this moment shaking table will produce the vibrational waveform that needs.The electric vibration table frequency is wide, acceleration is big, is easy to realize STOCHASTIC CONTROL, can realize big displacement, high thrust, thereby has obtained widespread use on civilian industries such as science and techniques of defence, aeronautical and space technology, weaponry development and automobile, electronics, building.The electric vibrating mode is to use the most a kind of mode of vibration in the market.Its wide frequency range, operating frequency range is about 2Hz～2KHz, is easy to realize automatically and manually control that the acceleration waveform is good, is fit to produce random wave, can obtain very big acceleration.Electric vibrating can provide the exciting force of 1～40000kg at present.
The vibrator of existing various proving installations is to be installed on the ground by support, and vibrator is in vibration processes, and exciting force is bound to be delivered on the installation basis of vibrator.For fear of the vibration on the basis influence to vibrator, the basis must have sizable retroaction quality and rigidity.On the other hand, to house architectural structure, this installation basis must be an anti-seismic foundation for fear of the vibration transfer on basis, and can only test area be not more than the material of work top.As shown in Figure 3, this tester comprises by adjusting screw rod 02 and is installed in sensor 03 on the crossbeam 01, aforementioned each parts are installed on the worktable 05 by column 04, and worktable 05 is positioned on the block assembly 08, and worktable 05 bottom is equipped with servo vibration measuring device 07 and displacement transducer 06.
Referring to shown in Figure 2, be the Yuan Chunyuan of Jiangsu automobile and traffic engineering institute, high a slice article--" emulation of air spring for automobile mechanical property and the experimental study " that waits on the Transactions of the Chinese Society of Agricultural Engineering that the people is published in the third phase in March, 2008 the 24th volume in week hole, the test philosophy figure of the test that provides in the article.In the existing various proving installation, test can't prevent the demarcation of the eccentric loading and the parameter that all cannot experimentize before test in vibration processes.The precision of each sensor has sizable relation in the accuracy of test system and the test, select high-precision sensor can improve test accuracy, in addition, the calibration coefficient of sensor also is the principal element of decision sensor accuracy, therefore, all to demarcate before the test, with validity and the accuracy that guarantees this time test the sensor that uses in the test.
The accuracy of instrument and the validity of test findings are closely related, the test that equipment in the pilot system all will be correlated with before test is demarcated, guaranteeing that the instrument parameter that this test is used is effective and feasible, otherwise in the experimental data processing owing to the instrumental calibration coefficient brings error.
In addition, common testing equipment is not generally demarcated, and directly provide the precision of equipment by producer, but instrument can not be constant, therefore, demarcates if desired and need do experiment with a high-precision sensor.
The utility model content
The purpose of this utility model is to overcome the above-mentioned defective of prior art, provides the selection of a kind of frequency of operation and exciting force wide ranges, test site convenient, flexible, and can be before experiment the equipment of the testing vibration performance of air spring of calibrating parameters in advance.
The purpose of this utility model is achieved by the following technical programs:
The equipment of testing vibration performance of air spring comprises vibrator and rigidly fixes the mass that is connected with described vibrator that be provided with force transducer between described vibrator and the mass, described mass is provided with displacement transducer; Signal generator is connected by electric signal with described vibrator successively with power amplifier; Described force transducer and displacement transducer are delivered to charge amplifier with its signal and carry out the signal amplification, are stored in computing machine then; Described vibrator is the electrodynamic type vibrator, described mass and the unsettled setting of electrodynamic type vibrator that rigidly fixes connection; Described displacement transducer is a laser displacement sensor.
Also have additional acceleration transducer on the described mass.
Also have additional the displacement tablet on the described mass.
Described laser displacement sensor, acceleration transducer and force transducer and displacement tablet are all two and be symmetrical arranged.
Described equipment is set up data acquisition system (DAS) and is carried out communication with described computing machine and be connected.
The beneficial effects of the utility model are:
1, mode of vibration adopts up-to-date electrodynamic type vibrator to load, and frequency range is adjustable continuously from 2Hz～2KHz, and exciting force is adjustable continuously from 1～40000kg.
2, the utility model is suspended from the top with the electrodynamic type vibrator, can avoid causing the influence to the test vibration-testing because vibrator is delivered to the basis; And the selection of test site is convenient, flexible, and can test infinitely-great determinand.
3, expense 2～30,000 of a whole set of test yuan are compared cheap much than the equipment on the market, this kind equipment also is under the trade monopoly state at present, and its manufacturing cost is also higher in addition.
4, the success or failure of demarcating for test are crucial, and this pilot system can be demarcated before test, and convenient, effective.
5, whether there is off-centre for loading, this pilot system has added two laser displacement sensors and two acceleration transducers symmetrically in pilot system, the signal that two acceleration transducer measuring-signals and laser displacement sensor are measured compares mutual checking, and can prevent eccentric the loading.
6, test apparatus of the present utility model only need directly to add a weight in the above promptly can static demarcating, allow weight free vibration perhaps for an one momentum load, promptly can dynamic calibration.
Description of drawings
Below in conjunction with the drawings and the specific embodiments, the utility model is described in further detail.
Fig. 1 is a vibration table test of Vibration schematic diagram commonly used in the background technology;
Fig. 2 is another prior art test of Vibration schematic diagram in the background technology;
Fig. 3 is a proving installation sketch in the background technology;
Fig. 4 is the utility model fundamental diagram;
Fig. 5 is the utility model testing apparatus sketch;
Fig. 6 is static demarcating result curve figure;
Fig. 7 is dynamic calibration result curve figure;
Fig. 8 is two laser displacement sensor signal comparison diagrams;
Fig. 9 is two acceleration transducer signals comparison diagrams;
Figure 10 is laser displacement sensor partial data measurement result and partial enlarged drawing thereof;
Figure 11 is acceleration transducer partial data measurement result and partial enlarged drawing thereof;
Figure 12 is the lag loop figure of rubber air spring.
Accompanying drawing sign: 1, air intake opening 2, rubber air spring 3, laser displacement sensor 4, acceleration transducer 5, force transducer 6, electrodynamic type vibrator 7, mass 8, displacement tablet 01, crossbeam 02, adjustment screw rod 03, sensor 04, column 05, worktable 06, displacement transducer 07, servo vibration measuring device 08, block assembly
Embodiment
Below in conjunction with specific embodiment the utility model is further described.
As shown in Figure 5, the equipment of testing vibration performance of air spring comprises vibrator and rigidly fixes the mass 7 that is connected with described vibrator that be provided with force transducer 7 between described vibrator and the mass 7, described mass 7 is provided with displacement transducer; Signal generator is connected by electric signal with described vibrator successively with power amplifier; Described force transducer 5 and displacement transducer are delivered to charge amplifier with its signal and carry out the signal amplification, are stored in computing machine then; Described vibrator is an electrodynamic type vibrator 6, described mass 7 and the 6 unsettled settings of electrodynamic type vibrator that rigidly fix connection; Described displacement transducer is a laser displacement sensor 3; Also be provided with acceleration transducer 4 and displacement tablet 8 on the described mass 7; Described equipment is set up data acquisition system (DAS) and is carried out communication with described computing machine and be connected; Described laser displacement sensor 3, acceleration transducer 4 and force transducer 5 and displacement tablet 8 are all two and be symmetrical arranged.
Referring to Fig. 4, signal generator is connected by electric signal with described electrodynamic type vibrator successively with power amplifier; Described laser displacement sensor 3, acceleration transducer 4 and force transducer 5 are delivered to charge amplifier with its signal to carry out being stored in computing machine then after signal amplifies; The signal of described charge amplifier is introduced into described data acquisition system (DAS), enters described computing machine through described data acquisition system (DAS) again.
After the said equipment installed, be used for test that rubber air spring 2 is carried out, test condition: air spring is two bent capsules, pressure 0.6MPa, and pressure adds by air intake opening 1; Frequency 2Hz, step is as follows:
1, the demarcation of sensor
Static demarcating
After installing test unit, mass 7 is installed on the rubber air spring 2, measure the signal of static condition lower sensor this moment, and allow signal continue for some time, can calculate loading force F according to the mass that is carried in the top, and collect the voltage signal of sensor by acquisition system, the signal that continues can judge whether sensor is stable, for stable signal, can read the magnitude of voltage V of its pressure signal, then the static demarcating coefficient of sensor is:
Tracing analysis from Fig. 6, can draw in the whole static(al) loading and unloading process, the transducer calibration result is stable, only initial period (stressed＜20N), sensor is unsettled, be a stationary value afterwards, the shake of intermediate portion causes owing to increasing and reduce static load load, but very fast stable.
Dynamic calibration
Give mass m one excitation, discharge then, measure the acceleration signal of vibrating isolation system under free vibration
Displacement signal, then the power that loads on the force transducer is
The voltage signal of force transducer is V, then can calculate the dynamic calibration coefficient of force transducer
From the tracing analysis of Fig. 7, can draw in the whole power loading procedure, the transducer calibration coefficient is not a stable value, and its coefficient slightly raises along with the increase of load, and its coefficient slightly reduces along with reducing of load in uninstall process.
2, precompressed
In the test to rubber air spring 2, precompressed realizes by the mass 7 of its top, realizes the different sizes values of precompressed by adjusting top mass 7.
3, balance adjustment
This test method is to be applicable to measure the axial dynamic characteristic test of material, for axially being loaded with certain requirement, therefore adopted two acceleration transducers and two laser displacement gauges in the test, can recognize by the comparison of two measuring-signals whether test unit is eccentric.Fig. 8 and Fig. 9 show two laser displacement sensor signal comparison diagrams and two acceleration transducer signals comparison diagrams respectively.Figure 10 and Figure 11 show laser displacement sensor partial data measurement result and partial enlarged drawing and acceleration transducer partial data measurement result and partial enlarged drawing thereof respectively.
Tracing analysis from Fig. 8, can draw two laser displacement sensors and measure the displacement of two symmetric positions, from scheming to go up the data contrast as can be seen, two data coincide better, show that pilot system is axial loading, avoid owing to the eccentric error that causes that loads.And two data are averaged and can reduce measuring error.
From the tracing analysis of Fig. 9, the data that can draw the displacement sensors that two symmetries place are coincide better, show that once more pilot system is axial loading, and two data are averaged and can reduce measuring error.
From the tracing analysis of Figure 10 and Figure 11, the displacement and the acceleration information that can draw the measurement of this pilot system are effectively stable.
4, the dynamic characteristic test of material
Tracing analysis from Figure 12, can draw testing tool and method of testing by the utility model proposes, be applied in the air spring isolation mounting, measured its mechanical property under dynamically, for the foundation and the parameter recognition of next step vibration isolator model are laid a good foundation.
Claims (6)
1. the equipment of testing vibration performance of air spring comprises vibrator and rigidly fixes the mass (7) that is connected with described vibrator, and be provided with force transducer (5) between described vibrator and the mass (7), described mass (7) is provided with displacement transducer; Signal generator is connected by electric signal with described vibrator successively with power amplifier; Described force transducer (5) and displacement transducer are delivered to charge amplifier with its signal and carry out the signal amplification, are stored in computing machine then; It is characterized in that: described vibrator is electrodynamic type vibrator (6), described mass (7) and the unsettled setting of electrodynamic type vibrator (6) that rigidly fixes connection; Described displacement transducer is laser displacement sensor (3).
2. the equipment of testing vibration performance of air spring according to claim 1 is characterized in that, also has additional acceleration transducer (4) on the described mass (7).
3. the equipment of testing vibration performance of air spring according to claim 1 is characterized in that, also has additional displacement tablet (8) on the described mass (7).
4. according to the equipment of claim 1 or 2 or 3 described testing vibration performance of air spring, it is characterized in that: described laser displacement sensor (3), acceleration transducer (4) and force transducer (5) and displacement tablet (8) are all two and be symmetrical arranged.
5. according to the equipment of claim 1 or 2 or 3 described testing vibration performance of air spring, it is characterized in that described equipment is set up data acquisition system (DAS) and carried out communication with described computing machine and be connected.
6. the equipment of testing vibration performance of air spring according to claim 4 is characterized in that, described equipment is set up data acquisition system (DAS) and carried out communication with described computing machine and be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201947253U CN201488923U (en) | 2009-09-14 | 2009-09-14 | Equipment used for testing vibration property of air spring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201947253U CN201488923U (en) | 2009-09-14 | 2009-09-14 | Equipment used for testing vibration property of air spring |
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| Publication Number | Publication Date |
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| CN201488923U true CN201488923U (en) | 2010-05-26 |
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| CN2009201947253U Expired - Fee Related CN201488923U (en) | 2009-09-14 | 2009-09-14 | Equipment used for testing vibration property of air spring |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101666730B (en) * | 2009-09-14 | 2012-07-11 | 中国人民解放军海军工程大学 | Equipment for testing vibration performance of air spring and method of using the same for testing |
| CN103558017A (en) * | 2013-10-25 | 2014-02-05 | 贵州航天天马机电科技有限公司 | Spring acceleration motion track testing device and testing method thereof |
| CN104535258A (en) * | 2015-01-05 | 2015-04-22 | 广州赛宝计量检测中心服务有限公司 | Automatic calibration device for dynamic force sensor |
| CN105115545A (en) * | 2015-09-15 | 2015-12-02 | 绍兴文理学院 | Supersonic wave ridge buster test board |
| CN107870089A (en) * | 2016-09-28 | 2018-04-03 | 广西大学 | A kind of product vibration testing analysis device |
| CN108195276A (en) * | 2018-03-13 | 2018-06-22 | 吉林大学 | The check device and method of air spring wire loop position |
| CN109458960A (en) * | 2018-12-18 | 2019-03-12 | 长安大学 | A kind of device and measurement method based on signal correlation measurement bolt elongate amount |
-
2009
- 2009-09-14 CN CN2009201947253U patent/CN201488923U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101666730B (en) * | 2009-09-14 | 2012-07-11 | 中国人民解放军海军工程大学 | Equipment for testing vibration performance of air spring and method of using the same for testing |
| CN103558017A (en) * | 2013-10-25 | 2014-02-05 | 贵州航天天马机电科技有限公司 | Spring acceleration motion track testing device and testing method thereof |
| CN103558017B (en) * | 2013-10-25 | 2015-10-14 | 贵州航天天马机电科技有限公司 | A kind of spring acceleration operation track testing device and method of testing thereof |
| CN104535258A (en) * | 2015-01-05 | 2015-04-22 | 广州赛宝计量检测中心服务有限公司 | Automatic calibration device for dynamic force sensor |
| CN105115545A (en) * | 2015-09-15 | 2015-12-02 | 绍兴文理学院 | Supersonic wave ridge buster test board |
| CN107870089A (en) * | 2016-09-28 | 2018-04-03 | 广西大学 | A kind of product vibration testing analysis device |
| CN108195276A (en) * | 2018-03-13 | 2018-06-22 | 吉林大学 | The check device and method of air spring wire loop position |
| CN108195276B (en) * | 2018-03-13 | 2023-04-07 | 吉林大学 | Device and method for checking position of air spring steel wire ring |
| CN109458960A (en) * | 2018-12-18 | 2019-03-12 | 长安大学 | A kind of device and measurement method based on signal correlation measurement bolt elongate amount |
| CN109458960B (en) * | 2018-12-18 | 2023-05-02 | 长安大学 | Device and method for measuring bolt elongation based on signal correlation |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100526 Termination date: 20130914 |