CN116147869B - Coupling device and vertical four-integration system - Google Patents
Coupling device and vertical four-integration system Download PDFInfo
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- CN116147869B CN116147869B CN202310170765.9A CN202310170765A CN116147869B CN 116147869 B CN116147869 B CN 116147869B CN 202310170765 A CN202310170765 A CN 202310170765A CN 116147869 B CN116147869 B CN 116147869B
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- 230000008878 coupling Effects 0.000 title claims abstract description 25
- 238000010168 coupling process Methods 0.000 title claims abstract description 25
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 25
- 230000007704 transition Effects 0.000 claims abstract description 82
- 230000007246 mechanism Effects 0.000 claims abstract description 77
- 230000008093 supporting effect Effects 0.000 claims abstract description 43
- 230000001105 regulatory effect Effects 0.000 claims abstract description 11
- 239000000523 sample Substances 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract 1
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000012945 sealing adhesive Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- G—PHYSICS
- 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
-
- G—PHYSICS
- 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
-
- G—PHYSICS
- 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
- G01M7/022—Vibration control arrangements, e.g. for generating random vibrations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention relates to the technical field of vibration tests, in particular to a coupling device and a vertical four-in-one system. The coupling device comprises a transition head, a supporting mechanism and a centering mechanism. The transition head is connected with the supporting mechanism, and the centering mechanism and the supporting mechanism are connected with the test box. The supporting mechanism is used for supporting the transition head and balancing the vertical upward suction force of the transition head. The centering mechanism is used for monitoring the air pressure of the transition head and adjusting the position of the transition head in the vertical direction. The transition head is connected with the supporting mechanism, the supporting mechanism supports the transition head and balances the vertical upward suction force of the transition head, so that the problem of excessive deviation of the position caused by unbalanced pressure on the upper surface and the lower surface of the transition head under the low air pressure state is solved. The air pressure of the transition head is fed back and regulated in real time through the centering mechanism, so that the test under different air pressures can be realized, and the air pressure changing test can be realized, thereby ensuring that the vibration system can effectively operate under any low air pressure and variable pressure environment.
Description
Technical Field
The invention relates to the technical field of vibration tests, in particular to a coupling device and a vertical four-in-one system.
Background
The four-integrated vibration test system refers to vibration test equipment capable of completing four environments of vibration, temperature, humidity and air pressure simultaneously. Conventional vibration test systems are classified as water-cooled and air-cooled; the water-cooled vibration generator dissipates heat through the independent and airtight water inlet pipeline, so that the balance state is not influenced by the method of synchronously changing the air pressure in the test box and the vibration generator. The pressure difference between the test box and the vibration generator does not affect the natural frequency of the system, but affects the initial balance position of the system, and for a vibration test system with displacement of 100mm at maximum, the normal operation of the equipment is affected.
Considering that the comprehensive environment test box is mostly low-pressure, the vibration generator is connected with the test table surface through a transition head, the atmosphere is arranged below the transition head, the transition head moves upwards under the action of pressure difference, and the moving coil is pulled to move upwards, so that the moving coil is separated from the balance position. In the prior art, the tension spring is used for connecting the vibration generator and the transition head, so that the vibration generator and the transition head always keep the balance position under certain air pressure, but the scheme is only suitable for a fixed-value low-air pressure test, and the air pressure in the test cannot be changed. For tests in which the air pressure value is constantly changing, this solution is not applicable. In consideration of the air pressure change caused by the real-time change of the height of aerospace equipment such as an airplane and the like during operation, a comprehensive test system capable of realizing a variable pressure environment needs to be designed, but the current system on the market can only meet the constant pressure test and cannot meet the variable pressure test.
There is a need for a coupling device and a vertical four-in-one system that solve the above problems.
Disclosure of Invention
The invention aims to provide a coupling device which can meet the requirement of a variable pressure test, can automatically adjust to a balance position according to any fixed value low air pressure in a test box, can realize the coupling of a vibrating table and an environment test box under the variable air pressure condition, and ensures the effective operation of environment test equipment.
To achieve the purpose, the invention adopts the following scheme:
The coupling device comprises a transition head, a supporting mechanism and a centering mechanism, wherein the transition head is connected with the supporting mechanism, the centering mechanism and the supporting mechanism are connected with the test box, the supporting mechanism is configured to support the transition head and balance the vertical upward suction force of the transition head, and the centering mechanism is configured to monitor the air pressure of the transition head and adjust the position of the transition head in the vertical direction.
Illustratively, the support mechanism includes a support plate, an adjustment bladder, and a bladder support plate, the bladder support plate being L-shaped, the support plate being connected to a vertical extension of the bladder support plate, the transition head being connected to a top surface of a lateral extension of the bladder support plate, the adjustment bladder being connected to a bottom surface of the lateral extension of the bladder support plate.
The transition head is, for example, in sealing connection with the support means.
The transition head is in sealing connection with the support means by means of a sealing film.
Illustratively, the centering mechanism includes a positioning block, a photoelectric sensor, a controller, and a fixed bracket, the positioning block being connected to the transition head, the fixed bracket being configured to fix the photoelectric sensor with a detection end of the photoelectric sensor facing the positioning block, the photoelectric sensor being in signal connection with the controller, the controller being configured to control the air pressure of the regulating air bag.
Illustratively, the photoelectric sensor is a diffuse reflection type sensor, and the positioning block is a black-and-white plate adapted for use with the diffuse reflection type sensor.
The invention further aims to provide a vertical four-in-one system which can meet the requirement of a variable pressure test, can automatically adjust to an equilibrium position according to any fixed low air pressure in a test box, can realize the coupling of a vibrating table and an environment test box under the variable air pressure condition, and ensures the effective operation of environment test equipment.
To achieve the purpose, the invention adopts the following scheme:
The vertical four-in-one system comprises a support mechanism, a vibration generator, a test box, a test table and the coupling device, wherein the vibration generator is arranged on the support mechanism, the vibration generator is configured to provide a vibration environment, the test box is configured to provide temperature, humidity and low-pressure environments for a test piece, the test table is arranged on the test box and is used for bearing the test piece, and the coupling device is connected with the vibration generator and the test box.
Illustratively, the vertical four-bar integrated system further includes a support frame assembly mounted to the support frame mechanism, the support frame assembly configured to support the test chamber.
Illustratively, the support bracket assembly is secured to the bracket mechanism by screws.
Illustratively, the bracket mechanism is provided with a mounting hole through which the vibration generator is fixedly connected to the bracket mechanism.
The beneficial effects of the invention are as follows:
In the coupling device provided by the invention, the transition head is connected with the supporting mechanism, the supporting mechanism supports the transition head and balances the vertical upward suction force of the transition head, so that the problem of excessive deviation of the position caused by unbalanced pressure of the upper surface and the lower surface of the transition head in a low-pressure state is solved. The air pressure of the transition head is fed back and regulated in real time through the centering mechanism, so that the test under different air pressures can be realized, and the air pressure changing test can be realized, thereby ensuring that the vibration system can effectively operate under any low air pressure and variable pressure environment.
According to the vertical four-in-one system, the vibration generator and the test box are connected by the coupling device, and the transition head is connected with the supporting mechanism, so that the supporting mechanism supports the transition head and balances the vertical upward suction force of the transition head, and the problem of excessive deviation of the position caused by unbalanced pressure of the upper surface and the lower surface of the transition head under the low air pressure state is solved. The air pressure of the transition head is fed back and regulated in real time through the centering mechanism, so that the test under different air pressures can be realized, and the air pressure changing test can be realized, thereby ensuring that the vibration system can effectively operate under any low air pressure and variable pressure environment.
Drawings
FIG. 1 is a schematic diagram of a vertical four-complex system provided by the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1A provided by the present invention;
FIG. 3 is a schematic view of the positioning block according to the present invention;
fig. 4 is a schematic structural diagram of a photoelectric sensor provided by the invention.
In the figure:
100. A bracket mechanism; 200. a vibration generator; 300. a test chamber; 400. a test bench; 500. a coupling device; 510. a transition head; 520. a support mechanism; 521. a support plate; 522. adjusting the air bag; 523. an airbag support plate; 530. a centering mechanism; 531. a positioning block; 532. a photoelectric sensor; 533. a fixed bracket; 540. sealing adhesive film; 600. and a support frame assembly.
Detailed Description
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the drawings related to the present invention are shown.
In the present invention, directional terms, such as "upper", "lower", "left", "right", "inner" and "outer", are used for convenience of understanding and are not to be construed as limiting the scope of the present invention unless otherwise specified.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The present embodiment provides a vertical four-in-one system, as shown in fig. 1 to 4, including a stand mechanism 100, a vibration generator 200, a test box 300, a test bench 400, and a coupling device 500. The vibration generator 200 is provided to the bracket mechanism 100. The vibration generator 200 is used to provide a vibration environment. The test chamber 300 is used to provide temperature, humidity and low pressure environment to the test piece. The test bench 400 is disposed on the test chamber 300, and the test bench 400 is used for bearing a test piece. The coupling device 500 connects the vibration generator 200 and the test chamber 300. The test chamber 300 is mostly low-pressure, the vibration generator 200 is connected with the test table 400 through the coupling device 500, and the vibration generator 200 is connected with the test chamber 300 through the coupling device 500, and the transition head 510 is connected with the supporting mechanism 520, so that the supporting mechanism 520 supports the transition head 510 and balances the suction force of the transition head 510 vertically upwards, and the problem that the upper surface and the lower surface of the transition head 510 are unbalanced in pressure under the low-pressure state to cause excessive position deviation is solved. The air pressure of the transition head 510 is fed back and regulated in real time through the centering mechanism 530, so that tests under different air pressures can be realized, and the air pressure changing test can be realized, thereby ensuring that the vibration system can effectively operate under any low air pressure and variable pressure environment.
Further, the vertical four-in-one system of the present embodiment further includes a support frame assembly 600, the support frame assembly 600 is mounted on the support frame mechanism 100, and the support frame assembly 600 is used for supporting the test chamber 300. By disposing the support frame assembly 600 between the test chamber 300 and the rack mechanism 100, a supporting effect can be provided for the test chamber 300, and the dead weight of the test chamber 300 is borne by the support frame assembly 600.
Further, the support bracket assembly 600 in the present embodiment is fixed to the bracket mechanism 100 by screws.
Further, the bracket mechanism 100 in the present embodiment is provided with a mounting hole, and the vibration generator 200 is fixedly connected with the bracket mechanism 100 through the mounting hole.
The coupling device 500 in this embodiment includes a transition head 510, a support mechanism 520, and a centering mechanism 530. The transition head 510 is connected to the support mechanism 520, and the centering mechanism 530 and the support mechanism 520 are connected to the test chamber 300. The supporting mechanism 520 is used for supporting the transition head 510 and balancing the suction force of the transition head 510 vertically upwards. The centering mechanism 530 is used to monitor the air pressure of the transition head 510 and adjust the position of the transition head 510 in the vertical direction. The transition head 510 is used for connecting the vibration generator 200 and the test bench 400, and under the transition head 510, an atmospheric pressure is set, and under the action of a pressure difference, the transition head 510 moves vertically upwards and pulls the moving coil upwards, so that the moving coil is separated from the balance position. In order to solve this problem, the supporting mechanism 520 supports the transition head 510 by connecting the transition head 510 with the supporting mechanism 520, and balances the suction force of the transition head 510 vertically upward, thereby solving the problem that the pressure imbalance on the upper and lower surfaces of the transition head 510 causes excessive displacement in the low-pressure state. The air pressure of the transition head 510 is fed back and regulated in real time through the centering mechanism 530, so that tests under different air pressures can be realized, and the air pressure changing test can be realized, thereby ensuring that the vibration system can effectively operate under any low air pressure and variable pressure environment.
Further, the supporting mechanism 520 in this embodiment includes a supporting plate 521, an adjusting air bag 522 and an air bag supporting plate 523, the air bag supporting plate 523 is L-shaped, the supporting plate 521 is connected to a vertical extension portion of the air bag supporting plate 523, the transition head 510 is connected to a top surface of a lateral extension portion of the air bag supporting plate 523, and the adjusting air bag 522 is connected to a bottom surface of the lateral extension portion of the air bag supporting plate 523. The transition head 510 serves as a connection between the test chamber 300 and the vibration generator 200, and when the environmental chamber begins to be evacuated, the internal pressure of the environmental chamber is less than the normal atmospheric pressure, which can give the transition head 510 an upward pressure. At this point the pressure of the regulator balloon 522 will decrease and in the deflated condition the air pressure will gradually decrease. When the air is pumped to a certain state, the pressure difference at the two ends of the transition head 510 is equal to the mass of the test piece, the transition head 510 and the moving coil, and the air discharging of the regulating air bag 522 is finished. When the air suction is continued, the pressure difference between the two ends of the transition head 510 is larger than the mass of the test piece, the transition head 510 and the moving coil, and the adjusting air bag 522 needs to be inflated to offset the pressure difference between the two ends of the transition head 510. By thus setting the pressure in the regulating air bag 522 to balance the suction force of the transition head 510, the problem of imbalance in the upper and lower pressures of the transition head 510 in the low-pressure state is solved.
Further, the transition head 510 in the present embodiment is sealingly connected to the supporting mechanism 520. Since the transition head 510 moves up and down and the supporting mechanism 520 is stationary during the experiment, the sealing reliability between the transition head 510 and the supporting mechanism 520 can be enhanced by this arrangement.
Further, the transition head 510 and the supporting mechanism 520 in this embodiment are in sealing connection through the sealant film 540. The sealing adhesive film 540 can be made of silicon rubber, and has good air tightness and heat resistance, and the long-term working temperature is minus 100 ℃ to plus 250 ℃.
Further, the centering mechanism 530 in this embodiment includes a positioning block 531, a photoelectric sensor 532, a controller and a fixed support 533, the positioning block 531 is connected to the transition head 510, the fixed support 533 is used for fixing the photoelectric sensor 532, a detection end of the photoelectric sensor 532 is opposite to the positioning block 531, the photoelectric sensor 532 is in signal connection with the controller, and the controller is used for controlling and adjusting the air pressure of the air bag 522. By doing so, the photoelectric sensor 532 detects whether the position of the positioning block 531 is in the equilibrium position, and if so, transmits a signal to the controller to adjust the air pressure of the adjusting air bag 522, thereby ensuring that the transition head 510 is in the offset position.
Further, the photoelectric sensor 532 in the present embodiment is a diffuse reflection type sensor, and the positioning block 531 is a black-and-white plate adapted to the diffuse reflection type sensor. Specifically, the black-and-white board comprises a first area, a second area, a third area and a fourth area from left to right from top to bottom, wherein the first area comprises a large black area and a small white area from top to bottom, the second area is full white, the third area is full white, and the fourth area comprises a small white area and a large black area from top to bottom. The diffuse reflection type photoelectric sensor cannot monitor a signal when moving to a black area, and can monitor a signal when moving to a white area. The diffuse reflection type photoelectric sensor comprises a left probe and a right probe. If the left probe has no signal and the right probe has a signal, the vibration source is indicated to move downwards, and at the moment, the air inlet component of the adjusting air bag 522 is controlled by the controller, so that the air supply pump charges air into the adjusting air bag 522; if the left probe has a signal and the right probe has no signal, the vibration source moves upwards, and at the moment, the air inlet component of the regulating air bag 522 is controlled by the controller, so that the air pressure in the regulating air bag 522 is reduced, and the vibration source is balanced. Both probes monitor the signal simultaneously, which indicates equilibrium, without adjustment. Through the real-time feedback adjustment of the centering mechanism 530, not only can the environment tests under different low air pressures be realized, but also the variable air pressure test can be realized.
It is to be understood that the above-described embodiments of the present invention are provided by way of illustration only and not limitation of the embodiments thereof. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (7)
1. Coupling device, characterized by comprising a transition head (510), a support mechanism (520) and a centering mechanism (530), the transition head (510) being connected to the support mechanism (520), the centering mechanism (530) and the support mechanism (520) being connected to a test chamber (300), the support mechanism (520) being configured to support the transition head (510) and balance the vertical upward suction force of the transition head (510), the centering mechanism (530) being configured to monitor the air pressure of the transition head (510) and adjust the position of the transition head (510) in the vertical direction;
The supporting mechanism (520) comprises a supporting plate (521), an adjusting air bag (522) and an air bag supporting plate (523), wherein the air bag supporting plate (523) is L-shaped, the supporting plate (521) is connected to a vertical extension part of the air bag supporting plate (523), the transition head (510) is connected to the top surface of a transverse extension part of the air bag supporting plate (523), and the adjusting air bag (522) is connected to the bottom surface of the transverse extension part of the air bag supporting plate (523);
The centering mechanism (530) comprises a positioning block (531), a photoelectric sensor (532), a controller and a fixed support (533), wherein the positioning block (531) is connected to the transition head (510), the fixed support (533) is configured to fix the photoelectric sensor (532), the detection end of the photoelectric sensor (532) is opposite to the positioning block (531), the photoelectric sensor (532) is in signal connection with the controller, and the controller is configured to control the air pressure of the regulating air bag (522);
the photoelectric sensor (532) is a diffuse reflection type photoelectric sensor, and the positioning block (531) is a black-and-white plate which is matched with the diffuse reflection type photoelectric sensor for use;
The diffuse reflection type photoelectric sensor can not monitor signals when moving to a black area, and can monitor signals when moving to a white area; the diffuse reflection type photoelectric sensor comprises a left probe and a right probe; when the left probe has no signal and the right probe has a signal, the vibration source moves downwards, and the adjusting air bag (522) is inflated at the moment; when the left probe has a signal and the right probe has no signal, the vibration source moves upwards, and the air pressure in the adjusting air bag (522) is reduced at the moment so as to balance the vibration source; when the left and right probes simultaneously monitor signals, there is no need to adjust the air pressure in the regulator balloon (522).
2. The coupling device according to claim 1, wherein the transition head (510) is sealingly connected to the support means (520).
3. The coupling device according to claim 2, wherein the transition head (510) is in sealing connection with the support mechanism (520) by means of a sealing film (540).
4. A vertical four-in-one system comprising a support mechanism (100), a vibration generator (200), a test chamber (300), a test bench (400) and a coupling device according to any of claims 1-3, said vibration generator (200) being arranged in said support mechanism (100), said vibration generator (200) being configured to provide a vibration environment, said test chamber (300) being configured to provide a test piece with a temperature, humidity and low air pressure environment, said test bench (400) being arranged on said test chamber (300), said test bench (400) being arranged to carry said test piece, said coupling device (500) being connected to said vibration generator (200) and said test chamber (300).
5. The vertical four-in-one system of claim 4, further comprising a support frame assembly (600), the support frame assembly (600) mounted to the support frame mechanism (100), the support frame assembly (600) configured to support the test chamber (300).
6. The vertical four-in-one system according to claim 5, wherein the support bracket assembly (600) is secured to the bracket mechanism (100) by screws.
7. The vertical four-in-one system according to claim 4, wherein the bracket mechanism (100) is provided with a mounting hole, and the vibration generator (200) is fixedly connected with the bracket mechanism (100) through the mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310170765.9A CN116147869B (en) | 2023-02-27 | 2023-02-27 | Coupling device and vertical four-integration system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310170765.9A CN116147869B (en) | 2023-02-27 | 2023-02-27 | Coupling device and vertical four-integration system |
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| CN116147869A CN116147869A (en) | 2023-05-23 |
| CN116147869B true CN116147869B (en) | 2024-09-06 |
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| CN118687795B (en) * | 2024-08-22 | 2024-12-20 | 苏州东菱振动试验仪器有限公司 | Vibration test coupling device and four-in-one vibration test system |
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| JPH0812124B2 (en) * | 1993-05-26 | 1996-02-07 | 日本電気株式会社 | Excited object holder for exciter |
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| CN105246284A (en) * | 2015-10-27 | 2016-01-13 | 中国电子科技集团公司第五十四研究所 | Sealing cabinet capable of balancing pressure in self-manner |
| CN114001775B (en) * | 2021-10-18 | 2022-07-12 | 重庆阿泰可科技股份有限公司 | Comprehensive test box for simulating temperature, air pressure, humidity and vibration |
| CN217006274U (en) * | 2022-04-06 | 2022-07-19 | 苏州东菱振动试验仪器有限公司 | Centering device and shaking table system |
| CN115165275A (en) * | 2022-07-13 | 2022-10-11 | 苏州东菱振动试验仪器有限公司 | Four-comprehensive test system |
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| CN105277329A (en) * | 2015-11-24 | 2016-01-27 | 苏州长菱测试技术有限公司 | Vibration testing system under low air pressure environment |
| CN210347041U (en) * | 2019-08-30 | 2020-04-17 | 品为众创(苏州)试验设备有限公司 | Electric vibration test device |
| CN113721451A (en) * | 2021-08-17 | 2021-11-30 | 北京航天希尔测试技术有限公司 | Automatic centering device for moving part of digital vibration table |
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