CN204422165U - A kind of linkage rigidity test bench - Google Patents
A kind of linkage rigidity test bench Download PDFInfo
- Publication number
- CN204422165U CN204422165U CN201420794063.4U CN201420794063U CN204422165U CN 204422165 U CN204422165 U CN 204422165U CN 201420794063 U CN201420794063 U CN 201420794063U CN 204422165 U CN204422165 U CN 204422165U
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- China
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- test bench
- block
- rigidity test
- parallel fixture
- linkage
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Abstract
The utility model provides a kind of linkage rigidity test bench, comprise mount pad, force snesor, back-up block, parallel fixture, web member, vibrator and acceleration sensor apparatus, linkage rigidity test bench entirety is suspended fixing, mount pad is for being connected to pressure testing machine by whole experiment table, mount pad is provided with force snesor, force snesor is connected with one end of back-up block, the other end of back-up block is connected with parallel fixture, parallel fixture is U-shaped structure, comprise two clamping parts, internal welding is connected to reinforcement plate, overall employing steel structure, two rubber testing parts can be clamped simultaneously, its installation direction can be exchanged, the centre of two clamping parts is provided with web member, by web member and vibrator and acceleration sensor apparatus.The utility model reasonable in design, low cost of manufacture, Detection results is good.
Description
Technical field
The present invention relates to mechanical vibration and impact field, especially relate to a kind of linkage rigidity test bench.
Background technology
Along with NVH technology development at home, rubber shock absorber, as the highest shock-absorption device of a kind of cost performance, is widely used by a lot of enterprise.The dynamic characteristic parameter of vibration damper is the important indicator weighing automobile suspended performance, at present the exciting condition simulating rubber mounting on experiment table is mainly passed through to the test of rubber mounting dynamic perfromance, the dynamic characteristic parameter of research rubber mounting under different excitation frequency and excitation amplitude, thus draw the dynamic stiffness value under different frequency and different amplitude.
Domestic and international existing experimental technique is complete experiment by the cooperation of hydraulic pressure tester and actuator substantially, but, current technology is all generally carry out unidirectional rigidity test by single suspending apparatus, when not considering to test, other direction is on the impact of vibration, and because fit structure is complicated, mount and dismount all pretty troublesome, be unfavorable for that use and maintenance is safeguarded.And this equipment once can only carry out the rigidity test of a rubber parts, is repeatedly clamping in process, rubber likely can be made to produce excessive bending, deform and affect dynamic stiffness test result.Because be only bear vertical vibrational excitation substantially when rubber mounting uses as vibroshock, if the problem when experiment test owing to clamping causes experimental data distortion, the data so collected just have very large error, cause test result inaccurate, thus the actual performance of product can be affected, easily to slip, make underproof product export.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of reasonable in design, low cost of manufacture, the linkage rigidity test bench that Detection results is good.
Technical scheme of the present invention is as follows
A kind of linkage rigidity test bench, be included in force snesor, back-up block, parallel fixture, web member, vibrator and acceleration transducer that straight line is installed successively, force snesor is connected with one end of back-up block, and the other end of back-up block is connected with parallel fixture.
Parallel fixture comprises about two clamping parts, and can clamp two rubber testing parts, the centre of two clamping parts is provided with web member simultaneously, and parallel fixture is connected with vibrator by web member, and vibrator is connected with acceleration sensor apparatus.
Linkage rigidity test bench also comprises mount pad, and for a whole set of experiment table is connected to pressure testing machine, mount pad can move up and down along the track of pressure testing machine.
Back-up block is rectangle frame structure, and framework inside circumference is welded with reinforcement gusset, and the other end of back-up block is connected with parallel fixture.
Parallel fixture comprises clamping part and erecting frame two parts, entirety is U-shaped structure, two U-shaped drift angle places are welded with reinforcement gusset, retained part is two, left and right clamping part, can clamp two rubber testing parts, the centre of two clamping parts is provided with web member simultaneously, is connected with vibrator and acceleration sensor apparatus by web member, parallel fixture can also adjust the side being mounted to back-up block simultaneously, conveniently carries out the dynamic stiffness test on left and right directions.
Acceleration transducer is high accuracy displacement sensor; Vibrator and acceleration sensor apparatus are arranged at parallel fixture lower end, for providing vibration and the acceleration condition of test to rubber test piece.
The present invention is by the design of unique parallel clamp assembling structure, rubber test piece can be offset and bear excessive excitation due to monolateral clamping and the bending power produced, more meet the reality of automobile low-frequency vibration, thus the dynamic characteristic parameter of rubber shock absorber can be reflected more truly.
Simultaneously, parallel fixture of the present invention can clamp two rubber testing parts and test, the rigidity test of three-dimensional is carried out by the mode that clamps of two groups of suspension parallel connections, the stability of testing fixture when loading can be ensured, actuator excitation can be prevented from again excessive thus make rubber produce excessive bending distortion causing experimental precision to be affected, more traditional its precision and stability of dynamic stiffness testing apparatus is better.
Clamp structure of the present invention, convenient installation, easy to use, substantially increase the efficiency of test, can save design cost, parallel fixture can bear larger excitation load simultaneously, makes the security of testing table better.The design's structure is simple, with low cost, be easy to assembling, and the security of more single suspension test experimental bed and experimental precision better, have a wide range of applications and promotion prospect.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present invention.
Fig. 2 is that driving cab rear suspension X of the present invention is to schematic diagram.
Fig. 3 is that cabin front suspension of the present invention puts X to, Y-direction schematic diagram.
Accompanying drawing identifies: 1-mount pad, 2-force snesor, 3-back-up block, the parallel fixture of 4-, 5-web member, 6-rubber test piece, 7-vibrator, 8-acceleration transducer, 31-strengthen gusset, 41-erecting frame, 42-clamping part.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Embodiment 1
As shown in Figure 1, linkage rigidity test bench, be included in power sensing 2, back-up block 3, parallel fixture 4, web member 5, vibrator 7 and acceleration transducer 8 that straight line is installed successively, force snesor 2 is connected with one end of back-up block 3, can detect the stressed change of whole experiment table in real time, the other end of back-up block 3 is connected with parallel fixture 4.
Linkage rigidity test bench further comprises mount pad 1, and for whole experiment table is connected to pressure testing machine, mount pad 1 can move up and down along the track of pressure testing machine.
Back-up block 3 is rectangle frame structure, and framework inside circumference is welded with strengthens gusset 31, and the other end of back-up block 3 is connected with parallel fixture 4.
Parallel fixture 4 comprises erecting frame 41 and clamping part 42 two parts, erecting frame 41 is U-shaped structure, two U-shaped drift angle places are welded with and strengthen gusset 31, retained part is two, left and right clamping part 42, the centre that simultaneously can clamp two rubber test piece, 6, two clamping parts 42 is provided with web member 5, is connected with vibrator 7 and acceleration transducer 8 by web member 5, parallel fixture 4 can also adjust the side being mounted to back-up block 3 simultaneously, conveniently carries out the dynamic stiffness test on left and right directions.
Acceleration transducer 8 is high accuracy displacement sensor; Vibrator 7 and acceleration transducer 8 are arranged at parallel fixture 4 lower end, for vibration and the acceleration condition of providing test to rubber test piece 6.
In the present embodiment, rubber parts clamping direction is Z-direction.During test, carry out steady-state sine swept frequency excitation by vibrator and acceleration sensor apparatus 7, sinusoidal input is selected in the input of excitation displacement, namely
, u in formula
0for exciting amplitude, ω be exciting angular frequency, t is the time.Collected the power suspending responder and bear by force snesor 2, in acquisition software, directly show the delay signal of acceleration and power, finally carry out data processing and draw dynamic stiffness value.
The test of vibration damper dynamic stiffness is carried out by linkage rigidity test bench of the present invention, rubber test piece 6 in prior art can be offset and bear excessive excitation due to monolateral clamping and the bending power produced, more meet the reality of automobile low-frequency vibration, thus the dynamic characteristic parameter of rubber shock absorber can be reflected more really, simultaneously, parallel fixture 4 of the present invention can clamp two rubber testing parts and test, the rigidity test of three-dimensional is carried out by the mode that clamps of two groups of suspension parallel connections, the stability of testing fixture when loading can be ensured, actuator excitation can be prevented from again excessive thus make rubber produce excessive bending distortion causing experimental precision to be affected, more traditional its precision and stability of dynamic stiffness testing apparatus is better.
Clamp structure of the present invention is convenient to be installed, easy to use, and substantially increase the efficiency of test, can save design cost, parallel fixture 4 can bear larger excitation load simultaneously, makes the security of testing table better.The design's structure is simple, with low cost, be easy to assembling, and the security of more single suspension test experimental bed and experimental precision better, have a wide range of applications and promotion prospect.
Embodiment 2
As shown in Fig. 2-Fig. 3, difference from Example 1 is: what have employed front-suspension or rear-suspending clamps mode, by two clamping parts 42 in left and right in parallel fixture 4, the installation site of adjustment rubber parts, test other rubber parts both direction X to the dynamic stiffness with Y-direction, extend the scope of application of experiment table.
Principle of work and test method identical with embodiment 1.
Claims (7)
1. a linkage rigidity test bench, is included in force snesor (2), back-up block (3), parallel fixture (4), web member (5), vibrator (7) and acceleration transducer (8) that straight line is installed successively, it is characterized in that:
Described force snesor (2) is connected with one end of back-up block (3), and the other end of described back-up block (3) is connected with parallel fixture (4);
Described parallel fixture (4) comprises about two clamping parts (42), two rubber testing parts (6) can be clamped simultaneously, the centre of two clamping parts (42) is provided with web member (5), described parallel fixture (4) is connected with vibrator (7) by web member (5), and described vibrator (7) is connected with acceleration sensor apparatus (8).
2. a kind of linkage rigidity test bench according to claim 1, it is characterized in that: also comprise mount pad (1), described mount pad (1) is for being connected to pressure testing machine by a whole set of experiment table, and mount pad (1) can carry out moving up and down
along the track of pressure testing machine.
3. a kind of linkage rigidity test bench according to claim 1, is characterized in that: described back-up block (3) is rectangle frame structure, and the inner corner of framework is welded with strengthens gusset (31).
4. a kind of linkage rigidity test bench according to claim 1, it is characterized in that: described parallel fixture (4) comprises erecting frame (41) and clamping part (42), described erecting frame (41) is connected with back-up block (3), erecting frame (41) is installed in parallel two clamping parts (42).
5. a kind of linkage rigidity test bench according to claim 4, is characterized in that: described erecting frame (41) is U-shaped structure, and two U-shaped drift angle places are welded with reinforcement gusset.
6. a kind of linkage rigidity test bench according to claim 1, is characterized in that: described parallel fixture (4) can adjust the side being mounted to back-up block (3), conveniently carries out the dynamic stiffness test on left and right directions.
7. a kind of linkage rigidity test bench according to claim 1, is characterized in that: described acceleration transducer (8) is high accuracy displacement sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420794063.4U CN204422165U (en) | 2014-12-16 | 2014-12-16 | A kind of linkage rigidity test bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420794063.4U CN204422165U (en) | 2014-12-16 | 2014-12-16 | A kind of linkage rigidity test bench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204422165U true CN204422165U (en) | 2015-06-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420794063.4U Withdrawn - After Issue CN204422165U (en) | 2014-12-16 | 2014-12-16 | A kind of linkage rigidity test bench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204422165U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535284A (en) * | 2014-12-16 | 2015-04-22 | 广西科技大学 | Parallel dynamic stiffness experiment table |
-
2014
- 2014-12-16 CN CN201420794063.4U patent/CN204422165U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535284A (en) * | 2014-12-16 | 2015-04-22 | 广西科技大学 | Parallel dynamic stiffness experiment table |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150624 Effective date of abandoning: 20180529 |