CN115165275A - Four-comprehensive test system - Google Patents
Four-comprehensive test system Download PDFInfo
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- CN115165275A CN115165275A CN202210828013.2A CN202210828013A CN115165275A CN 115165275 A CN115165275 A CN 115165275A CN 202210828013 A CN202210828013 A CN 202210828013A CN 115165275 A CN115165275 A CN 115165275A
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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
- G01M7/022—Vibration control arrangements, e.g. for generating random vibrations
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Abstract
The invention discloses a four-comprehensive test system, comprising: the test box comprises a test box body, and the test box body is provided with a first communicating part; the test bed penetrates through the first communication part, a gap exists between the test bed and the first communication part, and the test bed is used for placing a test piece; the vibration generator comprises a vibration generation box body and a vibration generation assembly, wherein the vibration generation box body is provided with a second communicating part, and the second communicating part is communicated with the first communicating part; the vibration generation assembly comprises a moving coil assembly, the test bed is connected to the moving coil assembly, and the moving coil assembly penetrates through the second communicating portion and exists a gap between the moving coil assembly and the second communicating portion. The test box can be communicated with the inside of the vibration generator, so that the consistency of the air pressure in the test box and the inside of the vibration generator is ensured, the test bed is prevented from deviating from a preset position, and a required test result can be obtained.
Description
Technical Field
The invention relates to the technical field of test systems, in particular to a four-comprehensive test system.
Background
In the current test field, a comprehensive test system considering various environmental stresses is indispensable equipment for testing the reliability in the field, and the comprehensive test system can apply comprehensive stress simulating the actual working conditions of a product to the product in the development stage so as to test the reliability of the product. The three comprehensive test systems are conventional electric vibration systems which are most widely applied at present and are suitable for general military and civil test projects. However, in the operation process of aerospace equipment and the like, positive and negative pressure environments exist, and in order to simulate different air pressure environments, the wall thickness of a test box is increased on the basis of a three-comprehensive test system, and then air in the test box is pumped out through a vacuum pump or high-pressure air is filled into the test box through an air compressor so as to perform tests in a four-comprehensive test system.
The prior art discloses a four-in-one test system that completely separates a vibration generator and a test chamber into two closed chambers by means of a transition head and a sealing rubber, and the air pressure in the vibration generator and the test chamber is controlled by means of different pressure-regulating devices. However, it is impossible to ensure that the air pressure of the vibration generator is consistent with the air pressure in the test chamber, that is, there is a pressure difference between the two, and the moving coil assembly of the vibration generator is shifted to deviate from the original equilibrium position, so that the test bed connected to the moving coil assembly is shifted from the predetermined position, and the stroke in one direction of the vibration is lost, and the standard operating stroke of the test piece in the comprehensive test system is 51 mm, 76 mm and 100 mm, and the standard operating stroke cannot be satisfied when the shift occurs, so that the required test result cannot be obtained.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defect that the required test result cannot be obtained because the test bed is deviated from the preset position and cannot meet the standard operation stroke due to the pressure difference between the air pressure of the vibration generator and the air pressure in the test box in the prior art, thereby providing a four-comprehensive test system.
A four-in-one test system comprising:
the test box comprises a test box body, and the test box body is provided with a first communicating part;
the test bed penetrates through the first communicating part, a gap exists between the test bed and the first communicating part, and the test bed is used for placing a test piece;
the vibration generator comprises a vibration generation box body and a vibration generation assembly, wherein the vibration generation box body is provided with a second communicating part, and the second communicating part is communicated with the first communicating part; the vibration generation assembly comprises a moving coil assembly, the test bed is connected to the moving coil assembly, the moving coil assembly penetrates through the second communicating portion, and a gap exists between the moving coil assembly and the second communicating portion.
Further, the vibration testing device further comprises a sealing structure, wherein the sealing structure is connected with the testing box body and the vibration generating box body, the sealing structure is provided with a third communicating portion, and the third communicating portion is communicated with the first communicating portion and the second communicating portion.
Further, the sealing structure comprises a soft sealing element and a hard sealing element, the soft sealing element is arranged between the first mounting wall of the hard sealing element and the test box body and is connected with the first mounting wall of the hard sealing element and the test box body through a fastening element, and the soft sealing element is arranged between the second mounting wall of the hard sealing element and the vibration generating box body and is connected with the second mounting wall of the hard sealing element and the vibration generating box body through the fastening element.
Furthermore, the test bench is provided with the first water retaining part, the test box body is provided with the second water retaining part, a gap exists between the first water retaining part and the second water retaining part, and the first water retaining part and the second water retaining part shield parts mutually.
Further, the vibration generating assembly further comprises a first air bag connected to the moving coil assembly through a guide.
Further, the test box comprises a base, the test box is arranged on the base, the vibration generation box body is arranged in the base, and a second air bag is arranged between the base and the vibration generation box body.
Further, the base is provided with a first mounting part, the vibration generation box is provided with a second mounting part, and the second air bag is arranged between the first mounting part and the second mounting part.
Further, the air inlet structure comprises an air inlet source, a first air inlet pipeline and a second air inlet pipeline, wherein the air inlet source is connected with the first air bag through the first air inlet pipeline and connected with the second air bag through the second air inlet pipeline, the first air inlet pipeline is provided with a first pressure reducing valve and a first reversing valve, and the second air inlet pipeline is provided with a second pressure reducing valve and a second reversing valve.
Furthermore, the first air bag is correspondingly provided with a first electric centering structure, the second air bag is correspondingly provided with a second electric centering structure, the air pressure of the first air bag is adjusted through the first electric centering structure, and the air pressure of the second air bag is adjusted through the second electric centering structure.
Further, the test box body is arranged in a cylindrical shape.
The technical scheme of the invention has the following advantages:
1. the invention provides a four-comprehensive test system, which comprises: the test box comprises a test box body, and the test box body is provided with a first communicating part; the test bed penetrates through the first communication part, a gap exists between the test bed and the first communication part, and the test bed is used for placing a test piece; the vibration generator comprises a vibration generating box body and a vibration generating assembly, the vibration generating box body is provided with a second communicating part, and the second communicating part is communicated with the first communicating part; the vibration generation assembly comprises a moving coil assembly, the test bed is connected to the moving coil assembly, and the moving coil assembly penetrates through the second communicating portion and exists a gap between the moving coil assembly and the second communicating portion. A four combined test system of this structure through first intercommunication portion, second intercommunication portion intercommunication setting and have the clearance between movable coil subassembly, the second intercommunication portion between test bench, the first intercommunication portion, can realize the inside intercommunication of proof box and vibration generator to guarantee the unanimity of proof box and the inside atmospheric pressure of vibration generator, avoid test bench and preset position to take place the skew, thereby can obtain required test result.
2. The invention provides a four-comprehensive test system, wherein the sealing structure comprises a soft sealing element and a hard sealing element, the soft sealing element is arranged between a first mounting wall of the hard sealing element and the test box body and is connected with the first mounting wall of the hard sealing element and the test box body through a fastening element, and the soft sealing element is arranged between a second mounting wall of the hard sealing element and the vibration generation box body and is connected with the second mounting wall of the hard sealing element and the vibration generation box body through the fastening element. The four-comprehensive test system with the structure can ensure enough rigidity and also can ensure enough elasticity by arranging the sealing structure, and reduces the vibration impact on the test box when the vibration generator has amplitude.
3. The invention provides a four-comprehensive-test system which further comprises a water retaining structure, wherein the water retaining structure comprises a first water retaining piece and a second water retaining piece, the test bench is provided with the first water retaining piece, the test box body is provided with the second water retaining piece, a gap exists between the first water retaining piece and the second water retaining piece, and the first water retaining piece and the second water retaining piece shield parts of each other. The four-comprehensive test system with the structure has the advantages that the first water retaining piece and the second water retaining piece are arranged, when the internal air pressure is adjusted by the air pressure adjusting structure such as a vacuum pump assembly or an air compressor assembly, the liquid generated by the environment adjusting structure can be prevented from entering the moving coil assembly under the condition that air can circulate, and the moving coil assembly is protected.
4. The invention provides a four-comprehensive test system, which further comprises a base, wherein the test box is arranged on the base, the vibration generation box body is arranged in the base, and a second air bag is arranged between the base and the vibration generation box body. The four-comprehensive test system with the structure can reduce vibration and reduce the influence on the surrounding environment by arranging the second air bag.
5. The invention provides a four-comprehensive-test system which further comprises an air inlet structure, wherein the air inlet structure comprises an air inlet source, a first air inlet pipeline and a second air inlet pipeline, the air inlet source is connected to the first air bag through the first air inlet pipeline and connected to the second air bag through the second air inlet pipeline, the first air inlet pipeline is provided with a first reducing valve and a first reversing valve, and the second air inlet pipeline is provided with a second reducing valve and a second reversing valve. The four-comprehensive test system with the structure can realize the air pressure regulation of the first air bag and the second air bag through the same air inlet source, simplifies the system and saves the cost.
6. The invention provides a four-comprehensive test system. The four-comprehensive test system with the structure is cylindrical through the test box body, so that the stress of the test box body is ensured to be uniform, and the stress concentration is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of a four-integrated test system provided in an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of the seal structure and water dam structure shown in FIG. 1;
FIG. 3 is a schematic structural view of the hard seal shown in FIG. 1;
FIG. 4 is a simplified gas circuit view of the four-in-one test system shown in FIG. 1;
description of reference numerals:
11-a test box body, 12-a first communicating part, 13-a cylindrical bulge part, 2-a test bed, 31-a vibration generating box body, 311-a second communicating part, 312-a second mounting part, 321-a moving coil component, 322-a first air bag, 323-a containing part, 324-a guide part, 325-a first electric centering structure, 4-a sealing structure, 41-a soft sealing part, 42-a hard sealing part, 5-a water retaining structure, 51-a first water retaining part, 52-a second water retaining part, 6-a base, 61-a first mounting part, 62-a second air bag, 63-a second electric centering structure, 71-an air inlet source, 72-a first reducing valve, 73-a first reversing valve, 74-a second reducing valve, 75-a second reversing valve, 8-a supporting structure, 91-an environment adjusting structure, 92-an air pressure adjusting structure, 93-a water draining structure and 100-a controller.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Examples
A four-in-one test system as shown in fig. 1 to 4 comprises a test box, a test bed 2, a vibration generator, a sealing structure 4, a water blocking structure 5, a base 6, an air inlet structure, a supporting structure 8, an environment adjusting structure 91, an air pressure adjusting structure 92 and a drainage structure 93. The supporting structure 8 comprises a supporting frame, an air spring and a guide bearing assembly, the air spring is sleeved outside the guide bearing assembly, the guide bearing assembly is arranged between the test box and the supporting frame, and the supporting frame is arranged on the base 6 to realize that the test box is arranged on the base 6; the environment adjusting structure 91 is connected to the test chamber, is used for adjusting the temperature and the humidity in the test chamber, and can adopt a structure for adjusting the temperature and the humidity in the prior art; the air pressure adjusting structure 92 can be a vacuum pump assembly or an air compressor assembly, and is used for adjusting the air pressure in the test chamber; the drain structure 93 communicates with the test chamber.
As shown in fig. 1, the test box includes a test box body 11, the test box body 11 is provided with a first communicating portion 12, the test box body 11 is arranged in a cylindrical shape, the interior of the test box body 11 can be filled with a heat insulating material, and the bottom of the test box body 11 is provided with a cylindrical boss portion 13 corresponding to the vibration generator; and the test bed 2 is arranged in the first communication part 12 in a penetrating mode, a gap exists between the test bed 2 and the first communication part 12, and the test bed 2 is used for arranging a test piece. The cylindrical test box body 11 ensures that the test box body 11 is uniformly stressed and avoids the stress concentration; by providing the cylindrical boss 13, the flow rate of the nearby gas can be reduced, and the sealing efficiency of the sealing structure 4 can be improved.
As shown in fig. 1, the vibration generator includes a vibration generating case 31 and a vibration generating unit, the vibration generating case 31 is provided with a second communicating portion 311, the second communicating portion 311 and the first communicating portion 12 are provided in communication, and the vibration generating case 31 is provided in the base 6 with the second air bag 62 provided between the base 6 and the vibration generating case 31. Referring specifically to fig. 1, the base 6 is provided with a first mounting member 61, the vibration generating case 31 is provided with a second mounting member 312, and a second air bag 62 is provided between the first mounting member 61 and the second mounting member 312. A gap is formed between the first mounting member 61 and the vibration generating case 31, and a gap is formed between the second mounting member 312 and the base 6. By providing the second air bag 62, the vibration can be reduced, and the influence on the surrounding environment can be reduced.
As shown in fig. 1, the vibration generating assembly includes a moving coil assembly 321, a first air cell 322, a magnet assembly, and a receiving member 323. The test bed 2 is connected to the moving coil assembly 321, the moving coil assembly 321 is arranged in the second communicating portion 311 in a penetrating manner, and a gap exists between the moving coil assembly 321 and the second communicating portion 311; the first air bag 322 is connected to the moving coil assembly 321 through a guide 324; the magnet assembly is arranged on the inner wall of the vibration generation box 31, and the moving coil assembly 321 can move in a magnetic field to form vibration through the magnetic effect of current; the accommodating member 323 is disposed in the vibration generating case 31, the first air bag 322 is disposed in the accommodating member 323, and the guide member 324 is disposed through the accommodating member 323 to be connected to the moving coil assembly 321.
As shown in fig. 1 to 3, the seal structure 4 connects the test case 11 and the vibration generating case 31, and the seal structure 4 has a third communicating portion provided to communicate with the first communicating portion 12 and the second communicating portion 311. Referring specifically to fig. 2 and 3, seal structure 4 includes a soft seal 41 and a hard seal 42, soft seal 41 being provided between a first mounting wall of hard seal 42 and test case 11 and connected by a fastener such as a screw, and soft seal 41 being provided between a second mounting wall of hard seal 42 and vibration generation case 31 and connected by a fastener such as a screw. Wherein, the soft sealing element 41 can be a sealing gasket or other, and the hard sealing element 42 can be an expansion joint or other. Through being provided with seal structure 4, can guarantee to have sufficient rigidity again can guarantee to have sufficient elasticity, when vibration generator appeared the amplitude, reduce the vibration impact to the proof box.
As shown in fig. 1 and 2, the water-blocking structure 5 includes a first water-blocking member 51 and a second water-blocking member 52, the test bed 2 is provided with the first water-blocking member 51, the test box 11 is provided with the second water-blocking member 52, a gap exists between the first water-blocking member 51 and the second water-blocking member 52, and the first water-blocking member 51 and the second water-blocking member 52 block parts of each other. The first water blocking member 51 and the second water blocking member 52 block parts of each other, that is, an end part of the first water blocking member 51 blocks part of the second water blocking member 52, and an end part of the second water blocking member 52 blocks part of the first water blocking member 51. By providing the first water blocking member 51 and the second water blocking member 52, when the air pressure adjusting structure 92 such as a vacuum pump assembly or an air compressor assembly adjusts the internal air pressure, the liquid generated by the environment adjusting structure 91 can be prevented from entering the moving coil assembly 321 under the condition that the air can circulate, so as to protect the moving coil assembly 321.
The air inlet structure in this embodiment includes an air inlet source 71, a first air inlet pipeline, and a second air inlet pipeline, where the air inlet source 71 is connected to the first air bag 322 through the first air inlet pipeline and connected to the second air bag 62 through the second air inlet pipeline, the first air inlet pipeline is provided with a first pressure reducing valve 72 and a first direction changing valve 73, and the second air inlet pipeline is provided with a second pressure reducing valve 74 and a second direction changing valve 75. The air pressure regulation of the first air bag 322 and the second air bag 62 can be realized through the same air inlet source 71, the system is simplified, and the cost is saved.
The first air bag 322 is correspondingly provided with a first electric centering structure 325, the second air bag 62 is correspondingly provided with a second electric centering structure 63, the air pressure of the first air bag 322 is adjusted through the first electric centering structure 325, and the air pressure of the second air bag 62 is adjusted through the second electric centering structure 63. Wherein the first electrical centering structure 325 includes a first sensor and a first sensing block and the second electrical centering structure 63 includes a second sensor and a second sensing block, and the positions can be determined by the cooperation of the corresponding sensors and sensing blocks to adjust the air pressure of the corresponding air bags. It should be noted that the first electrical centering structure 325, the second electrical centering structure 63, and the air inlet source 71 are all connected to the controller 100.
The four comprehensive test system can be assembled and debugged under normal pressure, the air pressure of the first air bag 322 can be adjusted through the first electric centering structure 325 so that the test bed 2 is located at a preset position, and the air pressure of the second air bag 62 can be adjusted through the second electric centering structure 63 so that the second air bag 62 is located at a preset position, wherein when different test pieces are replaced, the air pressure of the first air bag 322 can be adjusted according to requirements so that the test bed 2 is located at a preset position.
Under normal pressure, the air pressures of the first air bag 322 and the second air bag 62 are constant values, so that the larger value of the two air pressures can be set as the pressure of the air inlet source 71, and the lower air pressures corresponding to the two air pressures are obtained through decompression, so that the air pressure regulation can be realized through the same air inlet source 71. Specifically, the relative values of the operating pressures of first and second airbags 322 and 62 are constantly changing at different test pressures, and therefore, the source pressure of intake source 71 is set to the theoretical maximum operating pressure in both first and second airbags 322 and 62, and is adjusted by first and second pressure reducing valves 72 and 74 to obtain the operating pressures of first and second airbags 322 and 62. Wherein the corresponding directional valve is adjustable when the desired working pressure increases.
In the four-comprehensive test system in this embodiment, the first communicating part 12 and the second communicating part 311 are communicated with each other, a gap exists between the test bed 2 and the first communicating part 12, a gap exists between the moving coil assembly 321 and the second communicating part 311, the communication between the test box and the inside of the vibration generator can be realized, the consistency of the air pressure inside the test box and the inside of the vibration generator can be ensured, the test bed 2 is prevented from deviating from a preset position, and a required test result can be obtained.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. A four-up test system, comprising:
the test box comprises a test box body, and the test box body is provided with a first communicating part;
the test bed penetrates through the first communication part, a gap exists between the test bed and the first communication part, and the test bed is used for placing a test piece;
the vibration generator comprises a vibration generation box body and a vibration generation assembly, wherein the vibration generation box body is provided with a second communicating part, and the second communicating part is communicated with the first communicating part; the vibration generation assembly comprises a moving coil assembly, the test bed is connected to the moving coil assembly, and the moving coil assembly penetrates through the second communicating portion and exists a gap between the moving coil assembly and the second communicating portion.
2. The four-in-one test system according to claim 1, further comprising a sealing structure connecting the test chamber and the vibration generating chamber, the sealing structure having a third communicating portion, the third communicating portion being in communication with the first communicating portion and the second communicating portion.
3. A four-in-one test system as set forth in claim 2 wherein said seal structure includes a soft seal and a hard seal, said soft seal being disposed between said first mounting wall of said hard seal and said test housing and being connected by fasteners, said soft seal being disposed between said second mounting wall of said hard seal and said vibration-generating housing and being connected by said fasteners.
4. A four-in-one test system according to any one of claims 1 to 3, further comprising a water retaining structure, wherein the water retaining structure comprises a first water retaining member and a second water retaining member, the test bed is provided with the first water retaining member, the test box body is provided with the second water retaining member, a gap exists between the first water retaining member and the second water retaining member, and the first water retaining member and the second water retaining member shield parts of each other.
5. A four-in-one test system according to any one of claims 1 to 3, wherein the vibration generating assembly further comprises a first air bladder, the first air bladder being connected to the moving coil assembly by a guide.
6. The four-in-one test system according to claim 5, further comprising a base, wherein said test chamber is disposed on said base, said vibration generating chamber is disposed in said base and a second air bag is disposed between said base and said vibration generating chamber.
7. A four-in-one testing system according to claim 6, wherein said base is provided with a first mounting member and said vibration generating housing is provided with a second mounting member, said second air bag being provided between said first mounting member and said second mounting member.
8. The four-in-one test system according to claim 6, further comprising an air inlet structure, wherein the air inlet structure comprises an air inlet source, a first air inlet pipeline and a second air inlet pipeline, the air inlet source is connected to the first air bag through the first air inlet pipeline and connected to the second air bag through the second air inlet pipeline, the first air inlet pipeline is provided with a first pressure reducing valve and a first reversing valve, and the second air inlet pipeline is provided with a second pressure reducing valve and a second reversing valve.
9. The comprehensive testing system of claim 6, wherein said first air cell is correspondingly provided with a first electric centering structure, said second air cell is correspondingly provided with a second electric centering structure, and air pressure of said first air cell is adjusted by said first electric centering structure, and air pressure of said second air cell is adjusted by said second electric centering structure.
10. A four-in-one test system according to any one of claims 1 to 3, wherein the test housing is cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210828013.2A CN115165275A (en) | 2022-07-13 | 2022-07-13 | Four-comprehensive test system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210828013.2A CN115165275A (en) | 2022-07-13 | 2022-07-13 | Four-comprehensive test system |
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| CN115165275A true CN115165275A (en) | 2022-10-11 |
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| CN202210828013.2A Pending CN115165275A (en) | 2022-07-13 | 2022-07-13 | Four-comprehensive test system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115389148A (en) * | 2022-10-27 | 2022-11-25 | 苏州东菱振动试验仪器有限公司 | Four-comprehensive vibration test system |
| CN116147869A (en) * | 2023-02-27 | 2023-05-23 | 苏州东菱振动试验仪器有限公司 | Coupling device and vertical four-integration system |
-
2022
- 2022-07-13 CN CN202210828013.2A patent/CN115165275A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115389148A (en) * | 2022-10-27 | 2022-11-25 | 苏州东菱振动试验仪器有限公司 | Four-comprehensive vibration test system |
| CN115389148B (en) * | 2022-10-27 | 2023-02-10 | 苏州东菱振动试验仪器有限公司 | Four-comprehensive vibration test system |
| CN116147869A (en) * | 2023-02-27 | 2023-05-23 | 苏州东菱振动试验仪器有限公司 | Coupling device and vertical four-integration system |
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Inventor after: Ye Tengbo Inventor after: Tang Jinlong Inventor after: Zhang Zhuang Inventor after: Ding Yan Inventor after: Xu Changde Inventor after: Shi Chunyu Inventor after: Jin Kai Inventor before: Ye Tengbo Inventor before: Tang Jinlong Inventor before: Ding Yan Inventor before: Xu Changde Inventor before: Shi Chunyu Inventor before: Zhang Zhuang Inventor before: Jin Kai |
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Effective date of registration: 20221208 Address after: 215163 No. 2 Longshan Road, hi tech Zone, Jiangsu, Suzhou Applicant after: Suzhou Dongling Vibration Test Instrument Co.,Ltd. Applicant after: AECC AERO ENGINE CONTROL SYSTEM INSTITUTE Address before: 215163 No. 2 Longshan Road, hi tech Zone, Jiangsu, Suzhou Applicant before: Suzhou Dongling Vibration Test Instrument Co.,Ltd. |