CN101403656A - Double-moving endurance experiment apparatus of vibration damper - Google Patents
Double-moving endurance experiment apparatus of vibration damper Download PDFInfo
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- CN101403656A CN101403656A CNA2007101253801A CN200710125380A CN101403656A CN 101403656 A CN101403656 A CN 101403656A CN A2007101253801 A CNA2007101253801 A CN A2007101253801A CN 200710125380 A CN200710125380 A CN 200710125380A CN 101403656 A CN101403656 A CN 101403656A
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- 238000002474 experimental method Methods 0.000 title claims description 37
- 238000001816 cooling Methods 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 238000009434 installation Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 17
- 230000009471 action Effects 0.000 abstract description 7
- 239000006096 absorbing agent Substances 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The invention discloses a vehicle shock-absorber double-acting endurance test apparatus, comprising a hydraulic servo actuator, a hydraulic servo controller and a test bracket. The hydraulic servo controller comprises a system controlling a waveform formed by folding two sine waves with the different frequencies and swings; the hydraulic servo controller is connected with the hydraulic servo actuator; the test bracket comprises a gantry and the hydraulic servo actuator is fixed on a beam of the gantry; and the hydraulic cylinder of the hydraulic servo actuator is arranged downward and a power output shaft is fixed with the upper end of the shock-absorber to be tested and the lower end of the tested shock-absorber is fixed under the gantry. The invention can respectively brings an action with different frequencies and swings to the upper and lower ends of the shock-absorber to respectively simulate the movement of wheels and vehicle body; and the control precision is high and the noise is lower.
Description
Technical field
The invention belongs to a kind of vibration testing device, be used for the vibration damper on the automotive suspension is tested, be meant the double-moving endurance experiment apparatus that the two ends up and down of vehicle shock absorber is applied the action of a different frequency and amplitude respectively especially.
Background technology
Vibration damper is one of important parts of automotive suspension, its endurance quality is must verify in the vehicle development process, according to domestic vibration damper industry standard QC/T 545-1999, the vibration damper long duration test has two kinds of methods, a kind of is the single action method, it is action under the single amplitude of single-frequency, this method is about to eliminate in new vibration damper national standard, another kind is two moving methods, promptly apply the action of a different frequency and amplitude respectively, simulate the motion of wheel and vehicle body respectively to two ends about the vibration damper.Corresponding domestic vibration damper testing equipment also has two kinds at present: a kind of is that a motor and an eccentric wheel apparatus carry out single end driver, and this can not satisfy new vibration damper test standard; A kind of is that two motors and two decentralizing devices satisfy new test standard requirement, and these mode control accuracies are poor, and noise is very big, can reach more than the 85dB, and adjust inconvenience, vibrates also big especially.It is vehicle shock absorber test-bed that prior art such as China Patent No. 95226272.X propose, and adopts motor to drive toggle through belt gear, and with toggle as the reciprocating topworks of push-and-pull.The vertical installation of tested vibration damper, the slide block on the connecting rod of its lower end and toggle connects, and the upper end connects with the crossbeam of a tower structure.The tested vibration damper that adapts to different length with the mode that changes the upper beam height.Testing table all can only be realized the single action long duration test, and belt gear difference in response, control accuracy are low, and noise is very big, and particularly slide block secondary motion noise can reach more than the 85dBA, and adjust the stroke inconvenience, vibration is big especially.
Summary of the invention
The purpose of this invention is to provide a kind of double-moving endurance experiment apparatus of vibration damper, utilize this test unit can finish the action that applies a different frequency and amplitude to two ends about the vibration damper respectively, simulate the motion of wheel and vehicle body respectively, and control accuracy height, noise are little.
For solving the problems of the technologies described above, technical scheme of the present invention comprises:
Double-moving endurance experiment apparatus of vibration damper comprises hydraulic servo actuator, hydraulic servo controller, stand for experiment.Wherein, described hydraulic servo controller comprises the system that the waveform after a sine wave to two kinds of different frequencies and amplitude superposes is controlled, hydraulic servo controller is electrically connected with the hydraulic servo actuator, described stand for experiment comprises a portal frame, the hydraulic servo actuator is fixed on the crossbeam of portal frame, the hydraulic cylinder of hydraulic servo actuator is downward, and the upper end of power output shaft and tested vibration damper is fixed, and tested vibration damper is fixed under the portal frame.
In the described double-moving endurance experiment apparatus of vibration damper, described stand for experiment also comprises a upper junction plate, is fixed on the power output shaft of hydraulic servo actuator, and the upper end of another side and tested vibration damper is fixed.
In the described double-moving endurance experiment apparatus of vibration damper, have two vibration damper fixing ports at least, preferred four vibration damper fixing ports below the described upper junction plate.Be that upper junction plate can be installed two or four vibration dampers simultaneously
In the described double-moving endurance experiment apparatus of vibration damper, also comprise the side force charger, be connected between two tested vibration dampers, this side force charger comprises volute spring, guide piece and stationary installation, the stationary installation at two is fixed two tested vibration dampers, connected by volute spring, guide piece is connected on helical spring centre.
In the described double-moving endurance experiment apparatus of vibration damper, also comprise the spring length regulator in the described side force charger.Described spring length regulator is the anti-tooth bolt of a double end, is connected between volute spring and the tested vibration damper.
In the described double-moving endurance experiment apparatus of vibration damper, under the described portal frame auxiliary mould is arranged, fix with tested vibration damper, auxiliary mould comprises L type support, rubber bushing, last connection support, following connection support and lower connecting plate, wherein go up to connect support with under be connected support and form a link joint, described rubber bushing is placed in, between the following connection support, the following of the cross bar of last connection support and L type support fixed, the vertical rod of L type support and the shell of tested vibration damper tighten up, following connection support is fixed on the lower connecting plate, lower connecting plate is the sheet material corresponding with upper junction plate, has and the corresponding support erecting bed that is connected of upper junction plate.
In the described double-moving endurance experiment apparatus of vibration damper, also comprise cooling device, place around the tested vibration damper.Described cooling device comprises cooling jacket, temperature controller, temperature sensor, water pipe, two energising magnetic water valves, cooling jacket wraps up tested vibration damper, temperature sensor places cooling jacket to link to each other with temperature controller, the joint that is connected with water pipe is arranged on the cooling jacket, and two energising magnetic water valves are installed in the water pipe and link to each other with temperature controller.
Provided by the present invention is double-moving endurance experiment apparatus of vibration damper, owing to utilized hydraulic servo actuator and hydraulic servo controller, wherein hydraulic servo controller comprises the system that the waveform after a sine wave to two kinds of different frequencies and amplitude superposes is controlled, calculating can superpose the sine wave of two kinds of different frequencies and amplitude, programming realizes the superimposed motion of two different frequencies and amplitude waveform on hydraulic servo controller then, and the sine wave of this two different frequency and amplitude simulate the motion simulation of wheel and vehicle body and finished vibration damper pair dynamic tests in real work.The direct tested vibration damper of clutch end of hydraulic actuator links to each other simultaneously, makes work noise reduce (less than 65dB) greatly.Several preference of the present invention also is designed to double-moving endurance experiment apparatus of vibration damper and can tests four vibration dampers simultaneously, has increased side force charger and cooling device.
Describe the present invention below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is an embodiment of the invention front view.
Fig. 2 is an A place partial enlarged drawing among Fig. 1.
Fig. 3 is a side force charger front view.
Fig. 4 is the cooling jacket front view.
Fig. 5 is the rubber bushing coupling configuration synoptic diagram between auxiliary mould web joint and the vibration damper.
Fig. 6 is connection support and a lower connecting plate coupling configuration front view under the auxiliary mould.
Embodiment
As shown in Figure 1, 2, a kind of double-moving endurance experiment apparatus of vibration damper comprises commercial hydraulic servo actuator 2, hydraulic servo controller, stand for experiment; Described hydraulic servo controller comprises the system that the waveform after a sine wave to two kinds of different frequencies and amplitude superposes is controlled, hydraulic servo controller is electrically connected with hydraulic servo actuator 2, described stand for experiment comprises a portal frame 1, hydraulic servo actuator 2 is fixed on the crossbeam 11 of portal frame 1, the hydraulic cylinder of hydraulic servo actuator 2 is downward, power output shaft 13 is fixed with the upper end of tested vibration damper 3, and tested vibration damper 3 is fixed on portal frame 1 time.
In the described double-moving endurance experiment apparatus of vibration damper, described stand for experiment also comprises a upper junction plate 10, is fixed on the power output shaft 13 of hydraulic servo actuator 2, and the upper end of another side and tested vibration damper 3 is fixed.
In the described double-moving endurance experiment apparatus of vibration damper, have two vibration damper fixing ports at least below the described upper junction plate 10.Four vibration damper fixing ports are arranged among Fig. 8.
As shown in Figure 3, in the described double-moving endurance experiment apparatus of vibration damper, also comprise the side force charger, be connected between two tested vibration dampers, this side force charger comprises volute spring 4, guide piece 15 and stationary installation 17, the stationary installation 17 at two is fixed two tested vibration dampers and is connected by volute spring 4, and guide piece 15 is connected on helical spring centre.
In the described double-moving endurance experiment apparatus of vibration damper, also comprise the spring length regulator in the described side force charger.Described spring length regulator is the anti-tooth bolt 9 of a double end, is connected between volute spring 4 and the tested vibration damper 3.
Also have auxiliary mould in the present embodiment, effect is that tested vibration damper is fixed, and the simulation vibration damper is installed in the environment on the automotive axle.Shown in Fig. 2,4,5,6, described portal frame 1 auxiliary mould 7 fixes with tested vibration damper 3, auxiliary mould comprise L type support 14, rubber bushing 6, on connect support 71, connection support 72 and lower connecting plate 73 down, wherein go up to connect support 71 and be connected support 72 down and form an activity connection, described rubber bushing 6 is placed between the upper and lower connection support, the following bolt of using of the cross bar 142 of last connection support 71 and L type support 14, the vertical rod 141 of L type support and the shell bolt tightening of tested vibration damper 3.Following connection support 72 is fixed by bolts on the lower connecting plate 73, and lower connecting plate 73 is the sheet material corresponding with upper junction plate 10, has and the upper junction plate 10 corresponding support erecting beds that are connected.Because the connection between lower connecting plate 73 and the vibration damper 3 is by rubber bushing 6 transition, well compensated the alignment error of many exemplar long duration tests, avoided producing extra side force, also the side force that is applied has been acted between the urceolus and piston rod of vibration damper accurately simultaneously; The situation of the vibration damper of two kinds of different sizes when carrying out four exemplars is simultaneously considered in the design of web joint frock, adopt an adjustable screw device to realize regulating and connect highly to come the different vibration damper of compensate for height, thus the versatility that realizes can being simultaneously two or four and can carry out the vibration damper long duration test of two kinds of specifications.
If vibration damper is two ends all is the Lifting Lug Structure pattern, be connected on the upper junction plate by hanger above then, be connected directly to down joint cover below by the hanger of activity and link and get final product.
Because when carrying out the vibration damper test, piston in the vibration damper moves up and down, oil in the vibration damper flow in another chamber through different holes from a chamber repeatedly, the intermolecular interior friction of this moment hole wall and fluid forms damping force to vibration, making the Conversion of energy that adds vibration is the heat energy of fluid, therefore test period one length will make the vibration damper temperature raise, and vibration damper requires temperature below 80 ℃, so cooling device is necessary.Shown in Fig. 1,4, cooling device is arranged around tested vibration damper, cooling device comprises cooling jacket 5, temperature controller, temperature sensor, water pipe, two energising magnetic water valves, cooling jacket wraps up tested vibration damper, at the two ends of cooling jacket 5 water jacket clip 8 is arranged, temperature sensor places chilled water to link to each other with temperature controller, has joint 16, the two energising magnetic water valves that are connected with water pipe to be installed in the water pipe on the cooling jacket and links to each other with temperature controller.When temperature sensor senses is higher to the water temperature in the cooling jacket 5, send information to temperature controller, temperature controller is accelerated water velocity by control electromagnetism water valve, the water temperature in the cooling jacket 5 is descended, otherwise also be the same.
In this experimental example, sine-wave superimposed with frequency 1Hz, amplitude 100mm and frequency 12Hz, amplitude 20mm, in hydraulic servo controller, calculate each peak-to-valley value of stack back waveform, can finish the control that following pair of fold adds waveform by the input of the Waveform Editor in the hydraulic servo controller.
Claims (10)
1, a kind of double-moving endurance experiment apparatus of vibration damper comprises actuator, controller, stand for experiment, it is characterized in that: described controller comprises the system that the waveform after a sine wave to two kinds of different frequencies and amplitude superposes is controlled; Described stand for experiment comprises a portal frame, and actuator is fixed on the crossbeam of portal frame, and the upper end of actuator clutch end and tested vibration damper is fixed, and tested vibration damper lower end is fixed under the portal frame.
2, double-moving endurance experiment apparatus of vibration damper according to claim 1 is characterized in that: described actuator is the hydraulic servo actuator, and described controller is a hydraulic servo controller.
3, double-moving endurance experiment apparatus of vibration damper according to claim 2 is characterized in that: described stand for experiment also comprises a upper junction plate, is fixed on the power output shaft of hydraulic servo actuator, and the upper end of another side and tested vibration damper is fixed; Have two vibration damper fixing ports below the upper junction plate at least.
4, double-moving endurance experiment apparatus of vibration damper according to claim 3 is characterized in that: four vibration damper fixing ports are arranged below the described upper junction plate.
5, double-moving endurance experiment apparatus of vibration damper according to claim 1, it is characterized in that: also comprise the side force charger, be connected between two tested vibration dampers, this side force charger comprises volute spring, guide piece and stationary installation, the stationary installation at two is fixed two tested vibration dampers and is connected by volute spring, and guide piece is connected on helical spring centre.。
6, double-moving endurance experiment apparatus of vibration damper according to claim 5 is characterized in that: also comprise the spring length regulator in the described side force charger.
7, double-moving endurance experiment apparatus of vibration damper according to claim 6 is characterized in that: described spring length regulator is the anti-tooth bolt of a double end, is connected between volute spring and the tested vibration damper.
8, double-moving endurance experiment apparatus of vibration damper according to claim 1, it is characterized in that: under the described portal frame auxiliary mould is arranged, fix with tested vibration damper, auxiliary mould comprises L type support, rubber bushing, last connection support, following connection support and lower connecting plate, wherein go up to connect support and be connected support down and form an activity connection, described rubber bushing is placed in, between the following connection support, the following of the cross bar of last connection support and L type support fixed, the vertical rod of L type support and the shell of tested vibration damper tighten up, following connection support is fixed on the lower connecting plate, lower connecting plate is the sheet material corresponding with upper junction plate, has and the corresponding support erecting bed that is connected of upper junction plate.
9, according to the described arbitrary double-moving endurance experiment apparatus of vibration damper of claim 1 to 8, it is characterized in that: also comprise cooling device, place around the tested vibration damper.
10, double-moving endurance experiment apparatus of vibration damper according to claim 9, it is characterized in that: described cooling device comprises cooling jacket, temperature controller, temperature sensor, water pipe, two energising magnetic water valves, cooling jacket wraps up tested vibration damper, temperature sensor places cooling jacket to link to each other with temperature controller, the joint that is connected with water pipe is arranged on the cooling jacket, and two energising magnetic water valves are installed in the water pipe and link to each other with temperature controller.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101253801A CN101403656B (en) | 2007-12-19 | 2007-12-19 | Double-moving endurance experiment apparatus of vibration damper |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101253801A CN101403656B (en) | 2007-12-19 | 2007-12-19 | Double-moving endurance experiment apparatus of vibration damper |
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| CN101403656A true CN101403656A (en) | 2009-04-08 |
| CN101403656B CN101403656B (en) | 2011-02-16 |
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| CN2007101253801A Expired - Fee Related CN101403656B (en) | 2007-12-19 | 2007-12-19 | Double-moving endurance experiment apparatus of vibration damper |
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| CN101793613A (en) * | 2010-03-11 | 2010-08-04 | 浙江工业大学 | Vehicle shock absorber test-bed by adopting sine transmission device |
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