Clamp for vibration test of fuel cell
By incorporating a disc design with isolation grooves in the fuel cell vibration test, the problems of insufficient clamp rigidity and poor vibration resistance in the existing technology are solved, achieving stable fixation of the fuel cell in high-frequency vibration testing, and improving the accuracy of test data and experimental efficiency.
Patent Information
- Application Number
- CN202423159579.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2034-12-20
AI Technical Summary
Existing fuel cell vibration testing fixtures suffer from insufficient rigidity and poor vibration resistance, leading to deformation and loosening, which affects the accuracy of experimental data and the difficulty of operation. They also present mechanical interference and mechanical compatibility issues.
A disc design with isolation grooves is adopted. By setting a disc with isolation grooves between the end plate on one side of the fuel cell and the vibration test interface, and by setting a fixed outer ring, the position of the fuel cell is ensured to remain unchanged during high-frequency vibration testing.
It improves the accuracy of test data and experimental efficiency, reduces noise interference, simplifies the installation process, extends the service life of the fixture, and reduces maintenance costs.
Smart Images
Figure CN223685206U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to vibration test fixture technical field, especially a kind of fixture for fuel cell vibration test. BACKGROUND
[0002] The stability and reliability of fuel cell under high-frequency vibration or complex stress environment are crucial, which puts forward higher requirements on the anti-vibration performance and stability of its fixing device. However, the existing fixture is prone to deformation or loosening during the test process due to insufficient rigidity or poor anti-vibration performance, affecting the accuracy of experimental data. In addition, the traditional fixture often has compatibility problems or mechanical interference when connected with the test table, resulting in complex installation, difficult adjustment, increased operation difficulty and time cost of the experiment.
[0003] At present, commonly used vibration test fixtures include bolted fixtures, shock-absorbing fixtures with buffer materials, and fixtures with fixed rings. Although these designs can fix or dampen the fuel cell to some extent, they generally have problems such as unsatisfactory anti-vibration effect, easy fatigue damage, and complicated installation process, which cannot meet the requirements of fuel cell stability and test data accuracy under high-frequency vibration conditions. SUMMARY
[0004] In order to overcome the shortcomings of the prior art, the purpose of the utility model is to provide a fixture for fuel cell vibration test, by setting a disc with isolation groove between the end plate of one side of the fuel cell and the extension table of the vibration table, the fuel cell is stably arranged on the extension table of the vibration table, ensuring that the position of the fuel cell does not deviate during high-frequency vibration test, significantly improving the accuracy of test data and test efficiency.
[0005] In order to achieve the above purpose, the utility model adopts the technical scheme of:
[0006] A fixture for fuel cell vibration test, comprising a disc 2 with an isolation groove 1; the disc 2 comprises a fixed outer ring 21 and a fixed inner disc 22 integrally formed with the fixed outer ring 21 and located inside the fixed outer ring 21; the fixed outer ring 21 and the fixed inner disc 22 are both provided with a plurality of through holes 3; the depth of the isolation groove 1 is greater than the height of the bolt head of the bolt one 4 threaded through the through hole 3 of the fixed inner disc 22.
[0007] Further, the cross section of the fixed inner disc 22 and the isolation groove 1 is the same.
[0008] Further, the cross section of the fixed inner disc 22 and the isolation groove 1 includes but is not limited to circular, regular polygon.
[0009] Further, the material of the disc 2 is magnesium-aluminum alloy.
[0010] Compared with the prior art, the utility model has the following beneficial effects:
[0011] 1、The utility model discloses the design effectively avoided the mechanical interference that the disc 2 is installed on the extension table 6 of vibration table, reduces the noise caused by mechanical contact, and further ensures the accuracy of test data, and simultaneously also promotes the compatibility of disc 2 and the extension table 6 of vibration table, simplifies the installation and debugging process, and greatly improves experimental efficiency and operation convenience.
[0012] 2、The utility model discloses the combination use of fixed outer ring 21 and fixed inner disc 22 of disc 2, and then cooperate bolt one 4 and bolt two 5 and stably fix fuel cell 7 on extension table 6, ensure that fuel cell 7 is stable and does not shift in high-frequency vibration test, and the accuracy of test data and experimental efficiency are significantly improved.
[0013] 3、The utility model discloses the magnesium-aluminum alloy material of light high strength, avoids the resonance problem in test frequency band, reduces the load of vibration table, reduces the loss of fixture and equipment, prolongs the service life, significantly reduces maintenance cost, is suitable for long -term use in a variety of vibration test scenes.
[0014] Summarized above, through setting up a disc 2 with isolation groove 1 between the end plate 8 of fuel cell 7 side and the extension table 6 of vibration table, make fuel cell 7 stably set up on the extension table 6 of vibration table, ensure that the position of fuel cell 7 does not deviate in high-frequency vibration test process, and the accuracy of test data and test efficiency are significantly improved. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is the first embodiment structure diagram of the utility model.
[0016] Figure 2 It is the second embodiment structure diagram of the utility model.
[0017] Figure 3 It is the working schematic of the utility model in actual application scene Figure 1 .
[0018] Figure 4 It is the working schematic of the utility model in actual application scene Figure 2 .
[0019] Fig. 1, isolation groove;2, disc;21, fixed outer ring;22, fixed inner disc;3, through -hole;4, bolt one;5, bolt two;6, extension table;7, fuel cell;8, end plate. DETAILED DESCRIPTION
[0020] The utility model will be further explained in detail below with reference to the drawings.
[0021] Referring to Figures 1-3 A kind of clamp for fuel cell vibration test, including disc 2 with isolation groove 1;The disc 2 includes fixed outer ring 21, and fixed inner disc 22 integrated with fixed outer ring 21 and located in fixed outer ring 21;The fixed outer ring 21 and fixed inner disc 22 are all provided with multiple through holes 3;The depth of the isolation groove 1 is greater than the height of bolt head of bolt one 4 threaded in the through hole 3 provided in fixed inner disc 22.
[0022] As Figure 1 , Figure 2 and Figure 4 As shown in the embodiment, the fixed outer ring 21 is the main support part of the entire disc 2;The fixed outer ring 21 is uniformly distributed with multiple through holes 3, and the entire disc 2 can be fixed on the extended table surface 6 of the vibration table by threading bolt two 5 in the through hole 3, to ensure the stability during vibration test. The connecting and fixing component between the disc 2 and the extended table surface 6 of the vibration table is not limited to bolt two 5, and other components such as pin or shaft can also play a fixing and connecting role.
[0023] As Figures 1-4 As shown, the fixed inner disc 22 of the disc 2 is also uniformly distributed with multiple through holes 3, and the two end plates 8 on both sides of the fuel cell 7 are fixed and connected by threading bolt one 4 in the through hole 3, so that the fuel cell 7 can be stably arranged on the side of the disc 2 away from the isolation groove 1, thereby ensuring that the position of the fuel cell 7 does not deviate in the high-frequency vibration test environment.
[0024] As Figure 3 and Figure 4 As shown, in order to prevent the bolt head of bolt one 4 threaded in the through hole 3 on the fixed inner disc 22 from interfering with the extended table surface 6 of the vibration table, causing the contact surface of the entire disc 2 and the extended table surface 6 of the vibration table to be uneven, the depth of the isolation groove 1 needs to be reasonably set, so the depth of the isolation groove 1 of the embodiment needs to be greater than the height of the bolt head of bolt one 4, so that the bolt head of bolt one 4 is completely embedded in the isolation groove 1, avoiding direct contact between the bolt head of bolt one 4 and the extended table surface 6 of the vibration table. Through the setting of the isolation groove 1, the stability of the entire test process can be effectively maintained, the noise caused by mechanical contact is reduced, and the accuracy of the test data is ensured. At the same time, the compatibility of the disc 2 and the extended table surface 6 of the vibration table is improved, the installation and debugging process is simplified, and the experimental efficiency and operation convenience are greatly improved.
[0025] As Figures 1-3 As shown, the fixed inner disc 22 and the isolation groove 1 have the same cross section.
[0026] The cross section of the fixed inner disc 22 and the isolation groove 1 includes but is not limited to a circle, a regular polygon, a rectangle, an ellipse and the like, which can be used as an embodiment of the utility model. Figure 1 As shown in the figure, the cross section of the fixed inner disc 22 and the isolation groove 1 is a circle. Figure 2 As shown in the figure, the cross section of the fixed inner disc 22 and the isolation groove 1 is a regular dodecagon.
[0027] The material of the disc 2 is magnesium-aluminum alloy. In this embodiment, light and high-rigidity magnesium-aluminum alloy is selected as the material, and the natural frequency is significantly higher than the maximum frequency of the test frequency band, so that the resonance phenomenon is effectively avoided, and the stability and accuracy of the test data are further ensured.
[0028] Through the optimization of the material and structure, the disc 2 of the utility model not only has strong anti-vibration ability, but also is light and convenient, and is suitable for the test environment of high-frequency vibration.
[0029] The working principle of the utility model is as follows:
[0030] In the high-frequency vibration test process of the fuel cell 7, in order to ensure the stability of the fuel cell 7, a disc 2 with an isolation groove 1 is arranged between the end plate 8 on one side of the fuel cell 7 and the extended table surface 6 of the vibration table, so that the position of the fuel cell 7 is not deviated, and the accuracy of the test data is improved.
[0031] The two end plates 8 on both sides of the fuel cell 7 are connected with the disc 2 through the bolts one 4 arranged in the multiple through holes 3 on the fixed inner disc 22 of the disc 2, so that the fuel cell 7 is stably arranged on the disc 2 away from the isolation groove 1; the multiple through holes 3 of the fixed outer ring 21 of the disc 2 are arranged with the bolts two 5, and the disc 2 with the isolation groove 1 is fixed on the extended table surface 6 of the vibration table through the bolts two 5; since the height of the bolt head of the bolt one 4 is less than the depth of the isolation groove 1, the disc 2 and the extended table surface 6 of the vibration table are connected flatly and do not interfere with each other.
Claims
1. A fixture for fuel cell vibration testing, characterized by: The application relates to a disc (2) with an isolation groove (1); the disc (2) comprises a fixed outer ring (21) and a fixed inner disc (22) which is integrally formed with the fixed outer ring (21) and located in the fixed outer ring (21); the fixed outer ring (21) and the fixed inner disc (22) are both provided with a plurality of through holes (3); the depth of the isolation groove (1) is greater than the height of a bolt head of a bolt (4) which is arranged in the through hole (3) of the fixed inner disc (22).
2. The fixture for vibration testing of a fuel cell according to claim 1, wherein: The fixed inner disc (22) and the isolation groove (1) have the same cross section.
3. The fixture for vibration testing of a fuel cell as recited in claim 2, wherein: The cross section of the fixed inner disc (22) and the isolation groove (1) includes but is not limited to a circle and a regular polygon.
4. The fixture for vibration testing of fuel cells of claim 1, wherein: The material of the disc (2) is a magnesium-aluminum alloy.