CN201331377Y - Mechanical impedance testboard for vibration isolator - Google Patents
Mechanical impedance testboard for vibration isolator Download PDFInfo
- Publication number
- CN201331377Y CN201331377Y CNU2008201583337U CN200820158333U CN201331377Y CN 201331377 Y CN201331377 Y CN 201331377Y CN U2008201583337 U CNU2008201583337 U CN U2008201583337U CN 200820158333 U CN200820158333 U CN 200820158333U CN 201331377 Y CN201331377 Y CN 201331377Y
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- vibration isolator
- excitation
- hydraulic cylinder
- impedance
- mechanical impedance
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Abstract
A mechanical impedance testboard for a vibration isolator comprises a supporting device, an input point measuring device, an output point measuring device, a movable cross beam and an excitation set, wherein, the supporting device is used for placing a vibration isolator to be tested; the input point measuring device is arranged on the upper surface of the vibration isolator so as to collect the excitation and response signals of the input point and measure the input impedance of the vibration isolator; the output point measuring device is arranged on the lower surface of the vibration isolator so as to collect the excitation and response signals of the output point and calculate the transmission impedance of the vibration isolator; the movable cross beam can be positioned in a vertical upward range; a loading hydraulic cylinder is arranged in the movable cross beam so as to load the vibration isolator when the movable cross beam is positioned; and the excitation set is provided with an excitation rod and exerts excitation on the vibration isolator through the loading hydraulic cylinder. The impedance testboard can measure the input impedance and the transmission impedance at the same time through once clamping, and can measure the impedances of the vibration isolator under different loads; the change of the load is convenient and simple; the measuring efficiency is high; and the error in measurement is little.
Description
Technical field
The utility model belongs to the noise reduction technology field of power machinery system and equipment, relates in particular to a kind of vibration isolator mechanical impedance test board.
Background technology
In the design of power-equipment vibration and noise reducing device, the impedance analysis method is a kind of effective ways of labyrinth linear dynamics specificity analysis, and recent two decades comes, and has obtained good development in structural vibration analysis.The impedance analysis method is based on analogy and each parts mechanical impedance property of physical construction network, analyzes and the dynamics of computing system.Vibration isolator is the key of vibrating isolation system performance quality as main vibrational energy attenuation part, and the quality of its dynamic perfromance coupling directly influences vibration isolating effect.Vibrating isolation system is carried out impedance analysis, the mechanical impedance of at first necessary correct measurement vibration isolator, also unsound about the method and the standard of the measurement of vibration isolator mechanical impedance at present, need carry out particular study, set up method of testing and proving installation, the test procedure of formation standard and data processing method, thus lay the foundation for the vibration and noise reducing system design and the performance optimization of mechanical system and equipment.
Vibration isolator is as vitals in the vibration and noise reducing system, effect of vibration and noise reduction to total system plays a part very important, it is key and the precondition of understanding and grasping vibrating isolation system performance and optimal design that the performance of vibration isolator own is furtherd investigate, the performance of vibration isolator comprises static characteristics and dynamic perfromance, static characteristics is generally as the vibration isolator examination and test of products, the main means of quality supervision, dynamic perfromance then is that system performance is calculated, the key parameter that vibration isolating effect is optimized, but domestic dynamic perfromance is the natural frequency of measuring sensor at present, and calculate dynamic stiffness in view of the above, do not comprise impedance behavior.Therefore, wish to have a kind of method and apparatus of measuring the impedance behavior of vibration isolator.
The utility model content
The purpose of this utility model is to provide a kind of vibration isolator mechanical impedance test board, and dynamic perfromance that can full test vibration isolator itself is grasped the key of vibrating isolation system performance computation, for the estimation of vibrating isolation system vibration isolating effect provides data.
For this reason, the utility model proposes a kind of vibration isolator mechanical impedance test board, comprising:
Bracing or strutting arrangement is in order to place tested vibration isolator;
The input point measurement mechanism is arranged in the upper surface of vibration isolator, to gather the excitation and the response signal of input point, is used to measure vibration isolator input impedance;
The output point measurement mechanism is arranged in the lower surface of vibration isolator, gathers the excitation and the response signal of output point, is used to calculate the vibration isolator transfer impedance;
Moving beam is suitable for locating in a vertical distance range, is provided with loading hydraulic cylinder in the moving beam, in order in back, moving beam location vibration isolator is loaded; And
Excitation set has an exciting rod, and this exciting rod passes this loading hydraulic cylinder this vibration isolator is applied excitation.
In above-mentioned vibration isolator mechanical impedance test board, also comprise the driving hydraulic cylinder, this driving hydraulic cylinder is installed on a fixed cross beam and the above-mentioned moving beam, drives moving beam and do the catenary motion location in above-mentioned distance range.
In above-mentioned vibration isolator mechanical impedance test board, also comprise column, wherein above-mentioned moving beam is done the catenary motion location along this column in above-mentioned distance range.
In above-mentioned vibration isolator mechanical impedance test board, above-mentioned excitation set hangs on a fixed cross beam by a hitch.
In above-mentioned vibration isolator mechanical impedance test board, be provided with the elasticity decoupling elements between above-mentioned loading hydraulic cylinder and the above-mentioned vibration isolator.
In above-mentioned vibration isolator mechanical impedance test board, be provided with the elasticity decoupling elements between above-mentioned bracing or strutting arrangement and the above-mentioned vibration isolator.
Testing impedance platform of the present utility model, a clamping can be finished the measurement of input impedance and transfer impedance, and can measure the impedance under the vibration isolator different loads, and load change is convenient, simple, the efficiency of measurement height, measuring error is little.
Description of drawings
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent, below in conjunction with accompanying drawing embodiment of the present utility model is elaborated, wherein:
Fig. 1 is the testing impedance platform structural drawing of the utility model one embodiment.
Embodiment
Fig. 1 is the testing impedance platform structural drawing of the utility model one embodiment.Please refer to shown in Figure 1ly, this testing impedance platform comprises input point measurement mechanism 1, moving beam 2, fixed cross beam 3, suspended structure 4, drives hydraulic cylinder 5, excitation set 6, loading hydraulic cylinder 7, a plurality of column 8, base 9, vibration isolator 10, output point measurement mechanism 11 and bracing or strutting arrangement 12.The each several part of testing table specifically describes as follows:
Input point measurement mechanism 11 comprises a plurality of sensors that are arranged in vibration isolator 10 upper surfaces, to gather the excitation and the response signal of input point, is used to measure vibration isolator input impedance.
Output point measurement mechanism 11 comprises a plurality of sensors that are arranged in vibration isolator 10 lower surfaces, gathers the excitation and the response signal of output point, is used to calculate the vibration isolator transfer impedance.Bracing or strutting arrangement 12 provides support for tested vibration isolator 10, and this bracing or strutting arrangement and vibration isolator decoupling zero to be measured for example are provided with the elasticity decoupling elements.
Fixed cross beam 3 is for test board provides support, and the lower surface of fixed cross beam 3 is installed hitch 4, and hitch 4 can up-down adjustment.Suspended structure 4 is used to hang excitation set 6, can up-down adjustment, be convenient to install the vibration isolator of different model.
The cylinder body that drives hydraulic cylinder 5 tops connects with the lower surface of fixed cross beam 3, and the piston rod of bottom connects with the upper surface of moving beam 2.
During measurement, measurand vibration isolator 10 be fixedly mounted on through careful design, fully decoupling zero by on the air-sprung bracing or strutting arrangement 12, load measurement by the 7 pairs of vibration isolators of loading hydraulic cylinder that are installed on the moving beam 2, also can adopt the elasticity of decoupling zero to be connected between loading hydraulic cylinder 7 and the vibration isolator 10, the elasticity decoupling elements for example is set.Moving beam 2 is mainly used in the running fix on a large scale of loading hydraulic cylinder 7, and loading hydraulic cylinder 7 itself has stroke location more among a small circle.Excitation set 6 is suspended on the hitch 4 under the fixed cross beam 9, and tested vibration isolator is applied exciting force, and hitch 4 can up-down adjustment.The input point measurement mechanism 1 that tested vibration isolator upper and lower surface is installed and the survey sensor of output point measurement mechanism 11 are respectively applied for the measurement of input point impedance and transfer impedance.
During measurement, adjust the output load of loading hydraulic cylinder 7, gather input, output point measuring-signal,, form a cover science, effective vibration isolator mechanical impedance measuring system by calculating input impedance and the transfer impedance that to measure more accurately under the vibration isolator different loads.
Testing impedance platform of the present utility model, a clamping can be finished the measurement of input impedance and transfer impedance simultaneously, and can measure the impedance under the vibration isolator different loads, and load change is convenient, simple, the efficiency of measurement height, measuring error is little.
Though the utility model discloses as above with preferred embodiment; right its is not in order to limit the utility model; any those skilled in the art; in not breaking away from spirit and scope of the present utility model; when doing a little modification and perfect, therefore protection domain of the present utility model is worked as with being as the criterion that claims were defined.
Claims (6)
1. vibration isolator mechanical impedance test board is characterized in that comprising:
Bracing or strutting arrangement is in order to place tested vibration isolator;
The input point measurement mechanism is arranged in the upper surface of vibration isolator, to gather the excitation and the response signal of input point, is used to measure vibration isolator input impedance;
The output point measurement mechanism is arranged in the lower surface of vibration isolator, gathers the excitation and the response signal of output point, is used to calculate the vibration isolator transfer impedance;
Moving beam is suitable for locating in a vertical distance range, is provided with loading hydraulic cylinder in the moving beam, in order in back, moving beam location vibration isolator is loaded; And
Excitation set has an exciting rod, and this exciting rod passes this loading hydraulic cylinder this vibration isolator is applied excitation.
2. vibration isolator mechanical impedance test board as claimed in claim 1 is characterized in that, also comprises the driving hydraulic cylinder, and described driving hydraulic cylinder is installed on a fixed cross beam and the described moving beam, drives moving beam and do the catenary motion location in described distance range.
3. vibration isolator mechanical impedance test board as claimed in claim 2 is characterized in that, also comprises column, and wherein said moving beam is done the catenary motion location along this column in described distance range.
4. vibration isolator mechanical impedance test board as claimed in claim 1 is characterized in that,
Described excitation set hangs on a fixed cross beam by a hitch.
5. vibration isolator mechanical impedance test board as claimed in claim 1 is characterized in that,
Be provided with the elasticity decoupling elements between described loading hydraulic cylinder and the described vibration isolator.
6. vibration isolator mechanical impedance test board as claimed in claim 1 is characterized in that,
Be provided with the elasticity decoupling elements between described bracing or strutting arrangement and the described vibration isolator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201583337U CN201331377Y (en) | 2008-12-30 | 2008-12-30 | Mechanical impedance testboard for vibration isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201583337U CN201331377Y (en) | 2008-12-30 | 2008-12-30 | Mechanical impedance testboard for vibration isolator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201331377Y true CN201331377Y (en) | 2009-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201583337U Expired - Lifetime CN201331377Y (en) | 2008-12-30 | 2008-12-30 | Mechanical impedance testboard for vibration isolator |
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| CN (1) | CN201331377Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735373A (en) * | 2012-07-11 | 2012-10-17 | 哈尔滨工程大学 | Indirect measurement method of transmission force of vibration isolator |
| CN103308333A (en) * | 2013-05-17 | 2013-09-18 | 同济大学 | Method for testing dynamic stiffness of vibration isolator |
| 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 |
| CN105115690A (en) * | 2015-08-18 | 2015-12-02 | 上海交通大学 | Test device and test method for testing multidirectional impedance matrix and rigidity of vibration isolator |
| CN106679956A (en) * | 2017-01-04 | 2017-05-17 | 中国船舶重工集团公司第七0四研究所 | Vibration-isolation element impedance characteristic testing platform |
| CN110132516A (en) * | 2019-05-20 | 2019-08-16 | 中国舰船研究设计中心 | Impedance test device and test method under a kind of vibration isolator stress state |
| CN110470380A (en) * | 2019-04-13 | 2019-11-19 | 西北工业大学 | A kind of vibration isolator mechanical impedance test method for considering pedestal and influencing |
| CN111060273A (en) * | 2019-12-30 | 2020-04-24 | 武昌船舶重工集团有限公司 | Testing device and testing method for translational direct impedance of vibration isolator |
-
2008
- 2008-12-30 CN CNU2008201583337U patent/CN201331377Y/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735373A (en) * | 2012-07-11 | 2012-10-17 | 哈尔滨工程大学 | Indirect measurement method of transmission force of vibration isolator |
| CN103308333A (en) * | 2013-05-17 | 2013-09-18 | 同济大学 | Method for testing dynamic stiffness of vibration isolator |
| 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 |
| CN104713721B (en) * | 2015-04-10 | 2017-06-16 | 株洲时代新材料科技股份有限公司 | Vibration isolator dynamic performance testing experiment platform and its method of testing |
| CN105115690A (en) * | 2015-08-18 | 2015-12-02 | 上海交通大学 | Test device and test method for testing multidirectional impedance matrix and rigidity of vibration isolator |
| CN105115690B (en) * | 2015-08-18 | 2017-10-31 | 上海交通大学 | A kind of multidirectional impedance matrix of vibration isolator and rigidity test experimental rig and test method |
| CN106679956A (en) * | 2017-01-04 | 2017-05-17 | 中国船舶重工集团公司第七0四研究所 | Vibration-isolation element impedance characteristic testing platform |
| CN110470380A (en) * | 2019-04-13 | 2019-11-19 | 西北工业大学 | A kind of vibration isolator mechanical impedance test method for considering pedestal and influencing |
| CN110132516A (en) * | 2019-05-20 | 2019-08-16 | 中国舰船研究设计中心 | Impedance test device and test method under a kind of vibration isolator stress state |
| CN111060273A (en) * | 2019-12-30 | 2020-04-24 | 武昌船舶重工集团有限公司 | Testing device and testing method for translational direct impedance of vibration isolator |
| CN111060273B (en) * | 2019-12-30 | 2021-08-24 | 武昌船舶重工集团有限公司 | Testing device and testing method for translational direct impedance of vibration isolator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151204 Address after: 201108 Shanghai city Minhang District Huaning Road No. 3111 Building 1 room 629 Patentee after: Shanghai shine Heavy Industry Co., Ltd. Address before: 201108 Shanghai city Minhang District Huaning Road No. 3111 Patentee before: The 711th Research Institute of China Shipbuilding Industrial Corporation(CSIC) |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091021 |