CN108534971B - Active and passive integrated vibration isolator output force testing device - Google Patents
Active and passive integrated vibration isolator output force testing device Download PDFInfo
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- CN108534971B CN108534971B CN201810191015.9A CN201810191015A CN108534971B CN 108534971 B CN108534971 B CN 108534971B CN 201810191015 A CN201810191015 A CN 201810191015A CN 108534971 B CN108534971 B CN 108534971B
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- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/025—Measuring arrangements
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Abstract
The invention discloses an active and passive integrated vibration isolator output force testing device which comprises a mounting base and a groove arranged along the width direction of the mounting base, wherein a plurality of stay rods are arranged in the groove, a force sensor mounting base is arranged on the mounting base, a plurality of force sensors are arranged on the force sensor mounting base, a vibration isolator mounting bottom plate is arranged at the top of each force sensor, the vibration isolator mounting bottom plate is connected with an active and passive integrated vibration isolator to be tested through bolts, a top supporting plate is sleeved at the top of each stay rod, and a screw mounting hole is formed in the center of the top supporting plate. The testing device provided by the invention realizes rigid connection of the active and passive integrated vibration isolator, the vibration isolator mounting bottom plate and the top support plate, and meanwhile, a plurality of force testing sensors are arranged at the bottom of the vibration isolator mounting plate to be tested, so that the active and passive integrated vibration isolator to be tested can be kept stable, and the measured data is accurate and reliable.
Description
Technical Field
The invention belongs to the technical field of vibration isolation performance testing of vibration isolators, and particularly relates to an output force testing device of an active and passive integrated vibration isolator.
Background
With the development of modern industry, the protection requirements and the vibration control level requirements of mechanical equipment, particularly precision equipment are higher and higher, and vibration isolators are widely used in the mechanical equipment to play the roles of reducing noise and vibration. Especially for military ships, the vibration of dynamic equipment of the ships can generate ship radiation noise, the sound invisibility of the ships is greatly influenced, and the possibility of discovery and attack by enemies is increased. Therefore, it is very important to effectively control the vibration of the mechanical equipment.
At present, vibration control techniques for mechanical equipment can be classified into two categories, passive and active, according to whether external energy input is required. Passive vibration control techniques do not require external energy, and typically achieve effective isolation of mechanical equipment vibrations through passive vibration isolation elements or dampen mechanical equipment vibrations through passive dynamic vibration absorbers. The active vibration control technology needs to acquire energy from the outside to drive an actuator, and the effective control of vibration is realized through the actuator and a corresponding vibration control algorithm. Although the passive vibration isolator has a simple structure and good reliability, the low-frequency vibration isolation effect is not good. If the vibration isolation effect of the passive vibration isolation system is to be greatly improved, the rigidity of the vibration isolator needs to be reduced as much as possible. However, too low a stiffness may result in a reduction in the load carrying capacity and stability of the vibration isolation system. Although the active dynamic vibration absorber can simultaneously restrain a plurality of vibration frequency spectrums, the number of the active dynamic vibration absorbers needs to be greatly increased, so that more space is occupied.
The active and passive integrated vibration isolator is generally installed between the bottom of equipment with large vibration and an equipment installation base and used for isolating and eliminating the vibration transmitted to the base by the equipment, the output force of the active and passive integrated vibration isolator can reach hundreds of newtons or even thousands of newtons, the output force of the active and passive integrated vibration isolator needs to be tested when a performance test is carried out, and the test of the output force is very difficult. The state of the active and passive integrated vibration isolator at the mounted position needs to be simulated as much as possible during the output force performance test of the active and passive integrated vibration isolator, the active and passive integrated vibration isolator needs to be rigidly fixed on a testing device as much as possible, the influence on the precision of a test result caused by non-rigid connection between the active and passive integrated vibration isolator and the testing device is avoided, meanwhile, the deviation of the output force test result caused by shaking generated by the mounting problem of the active and passive integrated vibration isolator during the test is easy, and the test precision of the output force is low. In addition, other similar products can only test for single vibration isolator product models, and adaptability is poor.
Disclosure of Invention
Aiming at the defects or improvement requirements of the prior art, the invention provides an active and passive integrated vibration isolator output force testing device, which aims to install and fix a vibration isolator mounting plate and an active and passive integrated vibration isolator to be tested through bolts, and a screw mounting hole is formed in the center of a top supporting plate, so that the active and passive integrated vibration isolator, a vibration isolator mounting bottom plate and a top supporting plate are rigidly connected, and meanwhile, a plurality of force testing sensors are arranged at the bottom of the vibration isolator mounting plate to be tested, so that the active and passive integrated vibration isolator to be tested can be kept stable, and the measured data are accurate and reliable.
In order to achieve the aim, the invention provides a device for testing the output force of a driving and driven integrated vibration isolator, which comprises a mounting base and a groove arranged along the width direction of the mounting base,
a plurality of stay rods are arranged in the groove, a force sensor mounting base is arranged on the mounting base, the force sensor mounting base is fixed with the mounting base through a third clamp, and is rigidly connected with the mounting base through bolts;
a plurality of force sensors are arranged on the force sensor mounting base, and vibration isolator mounting bottom plates are arranged at the tops of the force sensors;
the vibration isolator mounting bottom plate is provided with a bolt hole for mounting and fixing the active and passive integrated vibration isolator to be tested, and the active and passive integrated vibration isolator is fixed through a bolt;
the top of the stay rod is sleeved with a top supporting plate, a mounting and fixing screw is arranged in the center of the top supporting plate, the active and passive integrated vibration isolator to be tested is placed on the vibration isolator mounting bottom plate, and the vibration isolator to be tested is rigidly connected with the active and passive integrated vibration isolator through a bolt;
the force sensors are used for simultaneously testing the output force of the active and passive integrated vibration isolator and outputting data, and the average value of the data is the output force of the active and passive integrated vibration isolator.
Furthermore, the force sensor mounting base is symmetrically provided with a plurality of force sensor mounting holes by taking the center of the force sensor mounting base as a symmetric center, and the force sensor mounting holes are used for mounting the force sensors.
Furthermore, the bottom of the stay rod is provided with a first clamp which is used for being fixedly connected with the force sensor mounting base.
Furthermore, the number of the stay rods is four, and the number of the force sensor mounting holes and the number of the force sensors are matched with the number of the stay rods.
Furthermore, four corners of the top supporting plate are provided with through holes, so that the supporting pull rod can penetrate through the through holes to be connected with the top supporting plate.
Furthermore, the outer circumference of the stay rod is provided with a thread, the top of the stay rod is provided with a second clamp, the bottom of the stay rod is provided with a third clamp, and the second clamp and the third clamp can rotate along the thread to adjust the height and the posture of the top support plate.
Further, the second clamp and the third clamp are nut groups consisting of two nuts respectively.
In general, compared with the prior art, the above technical solution contemplated by the present invention can achieve the following beneficial effects:
(1) according to the device for testing the output force of the active-passive integrated vibration isolator, the baffle matched with the appearance of the active-passive integrated vibration isolator to be tested is arranged on the vibration isolator mounting plate, the top plate is arranged in the center of the top supporting plate, the active-passive integrated vibration isolator, the vibration isolator mounting bottom plate and the top supporting plate are rigidly connected, and meanwhile, a plurality of force testing sensors are arranged at the bottom of the vibration isolator mounting plate to be tested, so that the active-passive integrated vibration isolator to be tested can be kept stable, and the tested data are accurate and reliable.
(2) According to the output force testing device of the active and passive integrated vibration isolator, the stress balance of the 4 force sensors is adjusted by measuring the heights of the four corners of the top supporting plate, and the horizontal posture of the top supporting plate is adjusted by measuring data through the 4 force sensors, so that the active and passive integrated vibration isolator to be tested is ensured not to shake, and the testing precision is further improved.
(3) According to the device for testing the output force of the active-passive integrated vibration isolator, the second clamp with the lead screw consists of the middle lead screw and 4 nuts which are arranged up and down, the second nut and the third nut are used for adjusting the height and the horizontal posture of the top supporting plate, and the first nut and the fourth nut are used for preventing the second nut and the third nut from loosening.
(4) According to the device for testing the output force of the active-passive integrated vibration isolator, the four corners of the upper mounting plate and the lower mounting plate for fixing the vibration isolator to be tested are connected with the screw through the nuts, so that the device can meet the testing requirements of the vibration isolators to be tested in different shapes, the testing postures of the vibration isolators to be tested can be conveniently and rapidly adjusted, and the adaptability is stronger.
(5) The device for testing the output force of the active-passive integrated vibration isolator adopts the support pull rod to connect the top support plate and the mounting base, and has the advantages of simple structure and convenience in mounting.
Drawings
Fig. 1 is a schematic three-dimensional structure diagram of an output force testing device of an active-passive integrated vibration isolator according to an embodiment of the invention;
fig. 2 is a schematic structural view of a force sensor mounting base of the device for testing the output force of the active and passive integrated vibration isolator according to the embodiment of the invention;
fig. 3 is a schematic structural view of a stay rod of the output force testing device of the active-passive integrated vibration isolator according to the embodiment of the invention;
fig. 4 is a schematic three-dimensional structure diagram of a clamp 2 of the active-passive integrated vibration isolator output force testing device according to the embodiment of the invention.
In all the figures, the same reference numerals denote the same features, in particular: 1-a mounting base, 2-a force sensor mounting base, 3-a first clamp, 4-a force sensor, 5-a vibration isolator mounting base plate, 6-an active and passive integrated vibration isolator to be tested, 7-a top support plate, 8-a second clamp, 9-a stay rod and 10-a third clamp, wherein 801, 802, 803 and 804 are standard nuts, and 801-a first nut, 802-a first nut, 803-a third nut and 804-a fourth nut.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Fig. 1 is a schematic three-dimensional structure diagram of an output force testing device of an active-passive integrated vibration isolator according to an embodiment of the invention. As shown in fig. 1, the device comprises a mounting base 1, a force sensor mounting base 2, a first clamp 3, a force sensor 4, a vibration isolator mounting base plate 5, a top support plate 7, a second clamp 8, a support pull rod 9 and a third clamp 10. Wherein, mounting base 1 arranges in bottommost portion in, has seted up the recess on it, is equipped with four and props pull rod 9 in this recess, from up setting gradually force sensor installation base 2, force sensor 4, isolator mounting plate 5 and top backup pad 7 down.
In a preferred embodiment of the present invention, as shown in fig. 1, the force sensor mounting base 2 is fixed to the mounting base 1 by 4 third clamps 10, and is rigidly fixed to the mounting base 1 by means of bolt mounting.
Fig. 2 is a schematic structural view of a force sensor mounting base of the device for testing the output force of the active-passive integrated vibration isolator according to the embodiment of the invention, and as shown in fig. 2, 4 force sensor mounting holes are symmetrically arranged in the center of the force sensor mounting base 2, so that the accuracy of the mounting position of the force sensor 4 is ensured. The force sensors 4 are in turn mounted in force sensor mounting holes fastened to the force sensor mounting base 2. The 4 force sensor mounting holes are arranged in a central symmetry mode, so that the tested active and passive integrated vibration isolator is stable and firm and is not prone to shaking, exciting currents with different frequencies and different amplitudes are supplied to the active and passive integrated vibration isolator through the controller, output signals of the four force sensors 4 are collected simultaneously, then the four sensor signals 4 are averaged, output force under the frequency to be tested and the current is obtained, and the measured data are accurate and reliable.
In the preferred embodiment of the present invention, the heights of the active and passive integrated vibration isolators 6 of different models may be different, so the top support plate is fixed to the mounting base 1 by using the second clamp 8 with a lead screw, the stay rod 9 and the third clamp 10, as shown in fig. 3, the bottom of the stay rod 9 is fixedly connected to the force sensor mounting base 2 by the first clamp 3. The top supporting plate and the mounting base are connected by the support pull rod, so that the mounting is simpler and more convenient. The four corners of the mounting plates for fixing the vibration isolators to be tested are connected with the screw rod through nuts, so that the testing requirements of the vibration isolators to be tested in different shapes can be met, the testing posture of the vibration isolators to be tested can be conveniently and quickly adjusted, and the adaptability is stronger.
As shown in fig. 4, the second fixture 8 with lead screw is composed of a middle lead screw and 4 nuts of upper and lower sets, wherein 801 is a first nut, 802 is a first nut, 803 is a third nut, 804 is a fourth nut, and 801, 802, 803 and 804 are all standard nuts. The second nut 802 and the third nut 803 are used to adjust the height and horizontal posture of the top support plate 7, and the first nut 801 and the fourth nut 804 are used to prevent the second nut 802 and the third nut 803 from loosening. Two ends of the stay rod 10 are provided with screw holes for connecting the screw rods of the second clamp 8 and the third clamp 10. After the actual installation is completed, the stress balance of the 4 force sensors can be adjusted by measuring the heights of the four corners of the top support plate 7. The horizontal attitude of the top support plate can also be adjusted by measuring data through 4 force sensors. The height of the corners of the top support plate 4 may be adjusted by means of nuts in the second clamp 8.
Before testing, the top support plate 7 and the vibration isolator mounting bottom plate 5 which correspond to the mounting holes of the to-be-tested active and passive integrated vibration isolators 6 of different models and specifications are replaced. Under different working conditions, the testing data receiving and displaying device of the force sensor is connected, the position of the nut in the second clamp 8 is adjusted according to the data result of the four force sensors 4 measured in real time, and the stress uniformity is ensured.
During testing, the four force sensors 4 are externally connected with a signal acquisition device, and the active and passive integrated vibration isolator 6 to be tested is externally connected with a controller. Exciting currents with different frequencies and different amplitudes are fed to the active-passive integrated vibration isolator through the controller, output signals of the four force sensors 4 are collected simultaneously, and then the output force under the frequency to be measured and the current is obtained by averaging the four sensor signals 4.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (5)
1. The utility model provides an active passive integration isolator output power testing arrangement, includes mounting base and edge the recess that mounting base's width direction set up, its characterized in that:
a plurality of stay rods are arranged in the grooves, a force sensor mounting base is arranged on the mounting base, the force sensor mounting base is fixed with the mounting base through a third clamp and is in rigid connection with the mounting base through a bolt, threads are arranged on the outer circumference of each stay rod, a second clamp is arranged at the top of each stay rod, a third clamp is arranged at the bottom of each stay rod, and the second clamp and the third clamp can rotate along the threads to adjust the height and the posture of a top supporting plate and ensure that the active-passive integrated vibration isolator to be tested does not shake;
the force sensor mounting base is provided with a plurality of force sensors, a plurality of force sensor mounting holes are symmetrically formed in the force sensor mounting base by taking the center of the force sensor mounting base as a symmetric center, the force sensor mounting holes are used for mounting the force sensors, and the top of each force sensor is provided with a vibration isolator mounting bottom plate;
the vibration isolator mounting bottom plate is provided with a bolt hole for mounting and fixing the active and passive integrated vibration isolator to be tested, and the active and passive integrated vibration isolator is fixed through a bolt;
the top of the stay rod is sleeved with a top supporting plate, a mounting and fixing screw is arranged in the center of the top supporting plate, the active and passive integrated vibration isolator to be tested is placed on the vibration isolator mounting bottom plate, and the vibration isolator to be tested is rigidly connected with the active and passive integrated vibration isolator through a bolt;
the force sensors are used for simultaneously testing the output force of the active and passive integrated vibration isolator and outputting data, and the average value of the data is the output force of the active and passive integrated vibration isolator.
2. The device for testing the output force of the active-passive integrated vibration isolator according to claim 1, wherein a first clamp is arranged at the bottom of the stay rod and is used for being fixedly connected with the force sensor mounting base.
3. The device for testing output force of the active-passive integrated vibration isolator according to claim 2, wherein the number of the stay rods is four, and the number of the force sensor mounting holes and the number of the force sensors are matched with the number of the stay rods.
4. The device for testing the output force of the active-passive integrated vibration isolator according to any one of claims 1-3, wherein through holes are formed in four corners of the top support plate, so that the stay rods can be connected with the top support plate through the through holes.
5. The device for testing output force of the active-passive integrated vibration isolator according to claim 4, wherein the second clamp and the third clamp are respectively a nut group consisting of two nuts.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810191015.9A CN108534971B (en) | 2018-03-08 | 2018-03-08 | Active and passive integrated vibration isolator output force testing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810191015.9A CN108534971B (en) | 2018-03-08 | 2018-03-08 | Active and passive integrated vibration isolator output force testing device |
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| CN108534971B true CN108534971B (en) | 2020-01-14 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109520566B (en) * | 2018-11-23 | 2023-12-08 | 中国船舶重工集团公司第七一九研究所 | Vibration isolator capable of displaying stress and deformation |
| CN111693265A (en) * | 2020-06-22 | 2020-09-22 | 中国核动力研究设计院 | Transverse loading device for vibration isolator and dynamic characteristic parameter obtaining method |
| CN112556957B (en) * | 2020-12-04 | 2022-09-09 | 中国直升机设计研究所 | Transmission characteristic test device for liquid elastic vibration isolation system |
| CN114061876A (en) * | 2021-10-29 | 2022-02-18 | 哈尔滨工业大学（深圳） | Damping characteristic measuring device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060075143A (en) * | 2004-12-28 | 2006-07-04 | 주식회사 한국가스기술공사 | Device for measuring sensitivity of a vibration sensor |
| CN104713721A (en) * | 2015-04-10 | 2015-06-17 | 株洲时代新材料科技股份有限公司 | Dynamic performance test platform of vibration isolator system and test method thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060075143A (en) * | 2004-12-28 | 2006-07-04 | 주식회사 한국가스기술공사 | Device for measuring sensitivity of a vibration sensor |
| CN104713721A (en) * | 2015-04-10 | 2015-06-17 | 株洲时代新材料科技股份有限公司 | Dynamic performance test platform of vibration isolator system and test method thereof |
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