Static pressure bearing and vibration test tooling applied to battery vibration test

Abstract

The application belongs to the technical field of battery testing, and discloses a static pressure bearing applied to battery vibration testing and a vibration test tool. The static pressure bearing comprises a bearing main body and a connecting piece. Multiple bearing main bodies are arranged at intervals, and adjacent bearing main bodies are connected by the connecting piece. The top of the bearing main body is provided with a support surface buffer zone, the side of the bearing main body is provided with a fixed connection zone, and a partial area between the support surface and the fixed connection zone is provided with a buffer zone. The stiffness of the buffer zone is smaller than the stiffness of the fixed connection zone and the support surface. Multiple bearing main bodies can be fixedly connected to form an integrated structure, so that it is not necessary to adjust the clearances, parallelism and coaxiality of multiple bearing main bodies one by one, the debugging difficulty is reduced, the cumulative assembly error and the complicated debugging process are eliminated, and the anti-overturning capability is improved. The setting of the buffer zone can avoid fatigue cracking or permanent deformation of the connection between the static pressure bearing and the workpiece, so that the stability and service life of the static pressure bearing are effectively improved.

Description

Technical Field

[0001] This invention relates to the field of battery testing technology, and in particular to a hydrostatic bearing and vibration testing fixture for battery vibration testing. Background Technology

[0002] Battery vibration testing is one type of mechanical safety testing in battery safety testing. It uses vibration and shock tests to evaluate battery products, such as energy storage battery cabinets, battery clusters, and airborne equipment, to simulate the vibration and shock environments that the product may experience throughout its entire lifespan, ensuring the stability and safety of the product during use.

[0003] Currently, vibration testing fixtures for horizontal vibration testing generally utilize a testing system composed of a vibration table, drive components, and other related auxiliary parts. Existing technologies commonly employ segmented, split-type T-shaped hydrostatic bearing structures for vibration tables, where multiple independent T-shaped hydrostatic bearings are installed and fixed to form the product's support platform. However, this approach has the following drawbacks: the split structure requires individual adjustment of the clearance, parallelism, and coaxiality between the hydrostatic bearings during assembly, which is not only difficult to adjust but also leads to mutual constraints on precision, easily accumulating assembly errors. Furthermore, the segmented support results in lower overall platform stiffness, making it prone to bending deformation under the overturning moment generated by a high-center-of-gravity product, leading to uneven bearing loads, localized overloads, and potentially causing jamming or seizure. Simultaneously, the rigid fixation of the split bearings lacks a stress release mechanism, causing internal stress generated by alternating vibration to concentrate at the connection point with the platform, easily leading to structural fatigue cracking. This ultimately creates a vicious cycle of platform deformation, bearing imbalance, and seizure, severely impacting the equipment's accuracy, stability, and service life.

[0004] In summary, there is an urgent need for a hydrostatic bearing and vibration testing fixture for battery vibration testing to improve the shortcomings of existing related technologies. Summary of the Invention

[0005] One objective of this invention is to provide a hydrostatic bearing for battery vibration testing, which can eliminate the accumulation of assembly errors and cumbersome debugging process, improve anti-overturning capability, prevent bearing overload and jamming from the source, and improve the bearing's accuracy, stability and service life.

[0006] To achieve this objective, the present invention adopts the following technical solution: A hydrostatic bearing for battery vibration testing includes a bearing body and a connecting member. Multiple bearing bodies are spaced apart, and adjacent bearing bodies are connected by the connecting member. The top of the bearing body is provided with a support surface for limiting and supporting the workpiece, and the side of the bearing body is provided with a fixed connection area for connecting the connecting member. A buffer zone is provided in a portion of the bearing body between the support surface and the fixed connection area, and the stiffness of the buffer zone is less than the stiffness of the fixed connection area and the support surface.

[0007] Preferably, the bearing body includes a vertically arranged wing plate and a web plate. The wing plate is connected to the bottom of the web plate and forms the fixed connection area. The side of the wing plate facing the adjacent bearing body is fixedly connected to the connector. The top of the web plate forms the support surface, and a local area of ​​the web plate forms the buffer zone.

[0008] Preferably, the web has slots that form the buffer zone.

[0009] Preferably, along the length extension direction of the web, at least one end of the web has a variable cross-section structure to form the buffer zone.

[0010] Preferably, along the length extension direction of the web, the end cross-sectional area of ​​at least one end of the web continuously decreases from the middle of the web to the end of the web, and the portion with the continuously decreasing cross-sectional area forms the buffer zone.

[0011] Preferably, the web is provided with a step along its length, and the cross-sectional area of ​​at least one end of the web decreases sequentially from the middle of the web to the end of the web, with the smaller cross-sectional area forming the buffer zone.

[0012] Preferably, the bearing body and the connecting member are integrally formed.

[0013] Preferably, the support surface is provided with a plurality of threaded holes, and the workpiece is provided with a plurality of through holes, with the threaded holes and the through holes corresponding one to one; the hydrostatic bearing also includes a plurality of threaded fasteners, which are inserted through the corresponding through holes and threadedly connected to the threaded holes.

[0014] Another objective of this invention is to provide a vibration testing fixture that, while maintaining compatibility with the existing lubrication system, solves the vicious coupling problem existing in the debugging process of existing testing fixtures, thereby significantly improving the fixture's lifespan and testing stability.

[0015] To achieve this objective, the present invention adopts the following technical solution: The vibration testing fixture includes a bearing base, a vibration assembly, and the aforementioned hydrostatic bearing used for battery vibration testing. The hydrostatic bearing is mounted on the bearing base and is used to limit and support the workpiece to be vibrated. The vibration assembly is driven to the workpiece so that the hydrostatic bearing is movably mounted on the bearing base.

[0016] Preferably, the bearing base has a hydrostatic oil chamber inside, the cross-sectional area of ​​the hydrostatic oil chamber is larger than the cross-sectional area of ​​the hydrostatic bearing, and an ink zone is provided between the inner wall of the hydrostatic oil chamber and the hydrostatic bearing; a plurality of oil spray nozzles are uniformly provided on the bearing base along the length extension direction of the hydrostatic oil chamber, one end of the oil spray nozzle is connected to the ink zone, and the other end of the oil spray nozzle is used to connect to an oil supply device.

[0017] Beneficial effects: The hydrostatic bearing for battery vibration testing provided by this invention uses connectors to fix multiple bearing bodies together, forming a single integrated structure. Compared to the split-type hydrostatic bearing structures commonly used in existing related technologies, this structure eliminates the need to individually adjust the clearance, parallelism, and coaxiality of multiple bearing bodies, thus reducing debugging difficulty and eliminating the accumulation of assembly errors and cumbersome debugging processes. Furthermore, this hydrostatic bearing directly improves the bending stiffness of the workpiece platform along its length. Under high overturning moments or alternating vibrations, the high-stiffness combined platform can resist bending deformation, ensuring uniform load distribution along the length of the hydrostatic bearing and preventing localized overload that could hinder movement. In addition, by introducing a buffer zone on the bearing body, the internal stress generated by the workpiece during vibration can be released at the buffer zone, preventing stress concentration on the support surface and avoiding fatigue cracking or permanent deformation at the connection between the support surface and the workpiece. This effectively improves the stability and service life of the hydrostatic bearing.

[0018] This invention also provides a vibration testing fixture. In this fixture, the hydrostatic bearing can form a stable and reliable limiting support for the workpiece through the support surface on its upper part. In addition, since multiple bearing bodies are fixedly connected in the hydrostatic bearing and a buffer zone is provided on the bearing body, the hydrostatic bearing not only has high straightness and bending stiffness, but also is not prone to bending deformation after being subjected to the overturning moment generated by high center of gravity workpieces such as battery clusters, and has strong anti-overturning ability. Moreover, when the vibration component drives the workpiece to vibrate, the buffer zone can also accurately receive the internal stress generated by the vibration, so that the internal stress can only be dissipated and released from the buffer zone, avoiding fatigue cracking caused by the internal stress spreading to the support surface or fixed connection area. This prevents deformation at the connection between the workpiece and the support surface or the bearing body from being unbalanced or jammed, thereby effectively improving the overall service life and testing stability of the fixture. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the hydrostatic bearing used for battery vibration testing provided by the present invention; Figure 2 This is a front view of the hydrostatic bearing used for battery vibration testing provided by the present invention; Figure 3 This is a side view of the hydrostatic bearing used for battery vibration testing provided by the present invention; Figure 4 This is a schematic diagram of the structure of the hydrostatic bearing used in battery vibration testing provided by the present invention, when the buffer zone is a strip hole; Figure 5 This is a schematic diagram of the structure of the hydrostatic bearing used in battery vibration testing provided by the present invention, when the buffer zone is an elliptical hole; Figure 6 This is a schematic diagram of the structure of the hydrostatic bearing used for battery vibration testing provided by the present invention, when the buffer zone is one of the variable cross-section structures; Figure 7 This is a schematic diagram of the structure of the hydrostatic bearing used in battery vibration testing provided by the present invention, when the buffer zone is another variable cross-section structure; Figure 8 This is a schematic diagram of the vibration testing fixture provided by the present invention; Figure 9 This is an exploded view of the vibration testing fixture provided by the present invention; Figure 10 This is an assembly diagram of the hydrostatic bearing and bearing base provided by the present invention.

[0020] In the picture: 100. Workpiece; 10. Hydrostatic bearing; 20. Bearing base; 21. Hydrostatic oil chamber; 22. Ink zone; 30. Vibration assembly; 40. Mounting base; 41. Receiving groove; 11. Bearing body; 1101. Buffer zone; 111. Web plate; 1111. Threaded hole; 112. Wing plate; 12. Connectors. Detailed Implementation

[0021] To make the technical problems solved by this invention, the technical solutions adopted, and the technical effects achieved clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without inventive effort are within the scope of protection of this invention. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to this invention, not the entire structure.

[0022] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0025] The technical solution provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] It should be noted in advance that in the accompanying drawings provided in this application, wherein... Figure 1 This is a schematic diagram of the hydrostatic bearing used for battery vibration testing provided by the present invention; Figure 2 This is a front view of the hydrostatic bearing used for battery vibration testing provided by the present invention; Figure 3 This is a side view of the hydrostatic bearing used for battery vibration testing provided by the present invention; Figure 4 This is a schematic diagram of the structure of the hydrostatic bearing used in battery vibration testing provided by the present invention, when the buffer zone is a strip hole; Figure 5 This is a schematic diagram of the structure of the hydrostatic bearing used in battery vibration testing provided by the present invention, when the buffer zone is an elliptical hole; Figure 6 This is a schematic diagram of the structure of the hydrostatic bearing used for battery vibration testing provided by the present invention, when the buffer zone is one of the variable cross-section structures; Figure 7 This is a schematic diagram of the structure of the hydrostatic bearing used in battery vibration testing provided by the present invention, when the buffer zone is another variable cross-section structure; Figure 8 This is a schematic diagram of the vibration testing fixture provided by the present invention; Figure 9 This is an exploded view of the vibration testing fixture provided by the present invention; Figure 10 This is an assembly diagram of the hydrostatic bearing and bearing base provided by the present invention.

[0027] Combination Figures 1 to 7 As shown, the present invention provides a hydrostatic bearing 10 for battery vibration testing, comprising a bearing body 11 and a connecting member 12. Multiple bearing bodies 11 are arranged and spaced apart along their length extension direction, and adjacent bearing bodies 11 are connected by the connecting member 12. The top of the bearing body 11 has a support surface for limiting and supporting the workpiece 100, and the side of the bearing body 11 has a fixed connection area for connecting the connecting member 12. A buffer zone 1101 is provided in the portion of the bearing body 11 between the support surface and the fixed connection area, and the stiffness of the buffer zone 1101 is less than the stiffness of the fixed connection area and the support surface.

[0028] In the above configuration, the bearing body 11 is fixedly connected to the connector 12 through the fixed connection area, so that multiple bearing bodies 11 can be constructed into an integral elongated structure. Compared with the split hydrostatic bearing structure commonly used in existing related technologies, this structure has the advantage that the hydrostatic bearing 10 provided in this embodiment has already ensured straightness, so there is no need to adjust the gap, parallelism and coaxiality of multiple bearing bodies 11 one by one. Therefore, the adjustment can be completed in one go, reducing the difficulty of adjustment and eliminating the accumulation of assembly errors and the tedious adjustment process. In addition, the integrally formed hydrostatic bearing 10 is equivalent to adding a long and uninterrupted reinforcing rib to the bottom of the workpiece 100 platform, which directly improves the bending stiffness of the workpiece 100 platform in the length direction. Under the action of high overturning moment or alternating vibration, the high-rigidity combined platform can resist bending deformation, ensuring that the hydrostatic bearing 10 is uniformly loaded in the elongation direction and avoiding local overload that would cause movement obstruction.

[0029] In addition, by introducing a buffer zone 1101 on the bearing body 11, the stiffness of the part of the bearing body 11 located at the buffer zone 1101 is designed to be the lowest stiffness part of the bearing body 11, and its stiffness (including bending stiffness and tensile stiffness) is strictly less than that of the support surface. When the workpiece 100 is constrained and supported on the support surface, there is usually an installation tolerance between the two. When the workpiece 100 is subjected to alternating vibration, the generated internal stress will preferentially seek to be released at the weakest point in the structure. Since the stiffness of the buffer zone 1101 is significantly lower than that of other locations such as the support surface and the fixed connection area, the buffer zone 1101 becomes the release area for this internal stress, thereby dissipating the concentrated stress. This setting can avoid the concentration of internal stress generated by alternating vibration on the support surface, fundamentally avoiding fatigue cracking or permanent deformation at the connection, and effectively improving the stability and service life of the hydrostatic bearing 10.

[0030] It should be further noted that when the internal stress is released in the buffer zone 1101, the internal stress will drive a small amount of elastic deformation in that area, such as a slight bend or a small twist, thereby dissipating the internal stress. This deformation is always controlled within the elastic limit of the material and can automatically recover after the stress is dissipated.

[0031] Preferably, in this embodiment, the bearing body 11 and the connecting member 12 are integrally formed and connected by die casting, stamping, or forging, which further simplifies the manufacturing process of the hydrostatic bearing 10 and further improves the overall structural strength and reliability of the hydrostatic bearing 10. Furthermore, the present invention does not limit the specific number of bearing bodies 11 and connecting members 12. For example, in this embodiment, there are three bearing bodies 11 and two corresponding connecting members 12, so that the overall length of the formed hydrostatic bearing 10 can match the required support length of the workpiece 100.

[0032] Preferably, in this embodiment, both the bearing body 11 and the connecting member 12 are made of high-strength metal materials, such as ductile iron or alloy steel.

[0033] Specifically, refer to Figure 2 , Figure 3As shown, in this embodiment, the bearing body 11 has an inverted T-shaped cross-section and is composed of an upper web 111 and a lower flange 112. This cross-sectional shape provides the hydrostatic bearing 10 with a large bending section modulus, ensuring that the hydrostatic bearing 10 itself has extremely high straightness and bending stiffness in the length direction. In the bearing body 11, the flange 112 is connected to the bottom of the web 111 and forms the aforementioned fixed connection area. The side of the flange 112 facing the adjacent bearing body 11 is fixedly connected to the connector 12. The top of the web 111 forms the aforementioned support surface, and a local area of ​​the web 111 forms a buffer zone 1101. In this way, when the bearing body 11 is subjected to internal stress, the internal stress will be concentrated in the buffer zone 1101 of the web 111 for release and dissipation, avoiding transmission to the fixed connection area and the support surface. This can prevent the connection from becoming loose or the weld from cracking at the connection with the connector 12 due to excessive stress in the fixed connection area. At the same time, it ensures that the support surface is not disturbed by internal stress, preventing cracking or deformation, and maintaining a stable limiting support effect on the workpiece 100.

[0034] The present invention does not limit the construction form of buffer 1101: for example, refer to Figure 4 , Figure 5 As shown, in one embodiment of this example, a slot is formed in the web 111 along the thickness direction of the web 111. When the bearing body 11 is under load and internal stress is generated, the slot can cut off the continuous transmission path of the internal stress on the cross section of the web 111, causing the internal stress concentration area to shrink from the entire cross section of the web 111 to the arc edge of the slot. This guides the internal stress to be released in the form of elastic deformation energy at this point, so that it yields before the flange 112 and the support surface when subjected to a preset impact, thus achieving effective protection of the fixed connection area and the support surface.

[0035] Optionally, the slots include strip-shaped holes and / or elliptical holes. That is, the number and shape of the slots are not limited. In other words, multiple slots of the same shape or multiple slots of different shapes can be provided on the web 111, or only one strip-shaped hole or one elliptical hole can be provided to meet different stiffness requirements.

[0036] In other embodiments of this example, at least one end of the web 111 has a variable cross-section structure to form the aforementioned buffer zone 1101 along its length. This configuration results in a smaller flexural section modulus at the end of the web 111 along its length compared to the middle section, making the stiffness of this end region lower than that of the middle section. When the bearing body 11 is subjected to alternating vibration and generates internal stress, the variable cross-section end will undergo elastic deformation before the flange 112 and the support surface, thereby guiding the release of strain energy of the internal stress in this variable cross-section portion.

[0037] refer to Figure 6 As shown, in one technical solution, along the length extension direction of the web 111, the cross-sectional area of ​​at least one end of the web 111 continuously decreases from the middle of the web 111 to the end of the web 111, and the portion with the continuously decreasing cross-sectional area forms the aforementioned buffer zone 1101. Thus, the buffer zone 1101 exhibits a gradual characteristic during yielding or deformation, rather than brittle sudden fracture. Furthermore, this continuously variable cross-section structure can be directly formed through the corresponding area of ​​the casting mold cavity without additional machining processes. During the casting process, the tapered end can effectively reduce the generation of casting defects, thereby effectively improving the forming quality of the bearing body 11.

[0038] refer to Figure 7 As shown, in another technical solution, the web 111 is provided with a step along its length, and the cross-sectional area of ​​at least one end of the web 111 decreases sequentially from the middle of the web 111 to the end of the web 111, with the smaller cross-sectional area forming a buffer zone 1101. With this configuration, when the stepped structure is integrally cast, it can be directly formed through the stepped surface of the corresponding area of ​​the mold cavity, and the demolding resistance of the casting is small, which is beneficial for protecting the surface of the bearing body 11 during demolding. Furthermore, the stepped structure forms an abrupt interface at the junction, so that when internal stress is transmitted to the root of the step, the stress will preferentially concentrate and precisely lock in the preferential area at the root of the step, making the yielding or bending area more controllable.

[0039] Optionally, in this embodiment, both ends of the web 111 are provided with buffer zones 1101 with continuously decreasing cross-sectional areas, or both are provided with buffer zones 1101 with stepped decreasing cross-sectional areas, so as to make the internal stress release more sufficient and uniform.

[0040] Optionally, refer to Figure 1 As shown, in this embodiment, a plurality of threaded holes 1111 are also provided on the support surface, and correspondingly, a plurality of through holes are provided at preset positions on the workpiece 100; in addition, the pressure bearing also includes a plurality of threaded fasteners. With the above arrangement, when the workpiece 100 is pre-installed on the support surface, the through holes can be set one-to-one with the threaded holes 1111. At this time, the threaded fasteners can pass through the corresponding through holes and then be threadedly connected to the threaded holes 1111, thereby realizing the limiting and locking between the workpiece 100 and the support surface.

[0041] Furthermore, each bearing body 11 has at least two threaded holes 1111 evenly distributed along a specified distance on its support surface, for example, one threaded hole 1111 is planned to be opened every 200-400mm, thereby further improving the connection strength between the bearing body 11 and the workpiece 100 and ensuring that there are no gaps or relative sliding on the contact surface.

[0042] Combination Figures 8 to 10 As shown, the present invention also provides a vibration testing fixture, which includes a bearing base 20, a vibration assembly 30, and a hydrostatic bearing 10 provided in the above embodiment. The bearing base 20 is provided with a hydrostatic bearing 10, which is used to limit and support the workpiece 100 to be vibrated. The vibration assembly 30 is drively connected to the workpiece 100, so that when the vibration assembly 30 drives the workpiece 100 to vibrate, the hydrostatic bearing 10 can be movably mounted on the bearing base 20.

[0043] In this fixture, the hydrostatic bearing 10 can form a stable and reliable limiting support for the workpiece 100 through the support surface on its upper part. In addition, since multiple bearing bodies 11 are fixedly connected in the hydrostatic bearing 10, and a buffer zone 1101 is provided on the bearing body 11, the hydrostatic bearing 10 not only has high straightness and bending stiffness, but also is not prone to bending deformation after being subjected to the overturning moment generated by the high center of gravity workpiece 100 such as the battery cluster, and has strong anti-overturning ability. Moreover, when the vibration component 30 drives the workpiece 100 to vibrate, the buffer zone 1101 can also accurately receive the internal stress generated by the vibration, so that the internal stress can only be dissipated and released from the buffer zone 1101, avoiding fatigue cracking caused by the internal stress spreading to the support surface or the fixed connection area. This prevents deformation at the connection between the workpiece 100 and the support surface or the bearing body 11 from being unbalanced or jammed, thereby effectively improving the overall service life and testing stability of the fixture.

[0044] Specifically, refer to Figure 10 As shown, a hydrostatic oil chamber 21 is also provided inside the bearing base 20. The hydrostatic oil chamber 21 extends along the length direction of the hydrostatic bearing 10, and the cross-sectional area of ​​the hydrostatic oil chamber 21 is larger than the cross-sectional area of ​​the hydrostatic bearing, so as to form an ink area 22 between the inner wall of the hydrostatic oil chamber 21 and the hydrostatic bearing 10. In addition, multiple oil spray nozzles are uniformly provided on the bearing base 20 along the length extension direction of the hydrostatic oil chamber 21. One end of the oil spray nozzle passes through the ink area 22, and the other end can be connected to the oil supply device.

[0045] Furthermore, in this embodiment, the cross-sectional shape of the hydrostatic oil chamber 21 matches the cross-sectional shape of the hydrostatic bearing 10, both being inverted T-shapes, to form a uniform and continuous ink zone 22 within the hydrostatic oil chamber 21. After the pressurized oil supplied by the oil supply device enters the ink zone 22 through the oil nozzle, it forms a pressurized oil film with a certain rigidity and load-bearing capacity within the ink zone 22. This oil film can float the hydrostatic bearing 10 as a whole, enabling pure liquid friction rather than solid contact between the bearing body 11 and the bearing base 20. When the workpiece 100 vibrates under the drive of the vibration assembly 30, the oil film can uniformly transfer the vibration load to the bearing base 20, ensuring that the hydrostatic bearing 10 maintains its original straightness and support accuracy under long-term high-frequency vibration conditions.

[0046] The fixture includes multiple hydrostatic bearings 10, which are arranged along their width direction so that the size of the support platform formed by the multiple hydrostatic bearings 10 matches the cross-sectional size of the workpiece 100, thereby ensuring stable support for the workpiece 100. Exemplarily, in this embodiment, reference is made to... Figure 9 As shown, three hydrostatic bearings 10 are provided, and correspondingly, the tooling includes three bearing bases 20, each corresponding to a hydrostatic bearing 10.

[0047] More specifically, the fixture also includes a mounting base 40, which is fixedly mounted and has a receiving groove 41 for accommodating multiple hydrostatic bearings 10. This configuration allows the hydrostatic bearings 10, the bearing base 20, and the mounting base 40 to be integrated into a single module. This modular design significantly simplifies the on-site assembly process. During assembly, the workpiece 100 is simply fixed to the support surface, and then the output end of the vibration assembly 30 is connected to the support surface, thereby improving the efficiency of test preparation.

[0048] In the description of this specification, the terms "some embodiments," "other embodiments," "an embodiment," "example," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity, and those skilled in the art should consider the specification as a whole. The technical solutions in the various embodiments can also be appropriately combined to form other embodiments understood by those skilled in the art.

[0049] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the invention and should not be construed as limiting the scope of protection of the invention in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of the invention without inventive effort, and these embodiments will all fall within the scope of protection of the present invention.

Claims

1. A hydrostatic bearing used for battery vibration testing, characterized in that, The bearing body (11) includes a bearing body (11) and a connector (12). Multiple bearing bodies (11) are spaced apart and adjacent bearing bodies (11) are connected by the connector (12). The top of the bearing body (11) is provided with a support surface for limiting and supporting the workpiece (100). The side of the bearing body (11) is provided with a fixed connection area for connecting the connector (12). The bearing body (11) has a buffer zone (1101) in a part of the area between the support surface and the fixed connection area. The stiffness of the buffer zone (1101) is less than the stiffness of the fixed connection area and the support surface.

2. The hydrostatic bearing for battery vibration testing according to claim 1, characterized in that, The bearing body (11) includes a vertically arranged wing plate (112) and a web plate (111). The wing plate (112) is connected to the bottom of the web plate (111) and forms the fixed connection area. The wing plate (112) is fixedly connected to the connector (12) on the side facing the adjacent bearing body (11). The top of the web plate (111) forms the support surface. A local area of ​​the web plate (111) forms the buffer zone (1101).

3. The hydrostatic bearing for battery vibration testing according to claim 2, characterized in that, The web (111) has slots that form the buffer zone (1101).

4. The hydrostatic bearing for battery vibration testing according to claim 2, characterized in that, Along the length of the web (111), at least one end of the web (111) has a variable cross-section structure to form the buffer zone (1101).

5. The hydrostatic bearing for battery vibration testing according to claim 4, characterized in that, Along the length extension direction of the web (111), the end cross-sectional area of ​​at least one end of the web (111) continuously decreases from the middle of the web (111) to the end of the web (111), and the portion with continuously decreasing cross-sectional area forms the buffer zone (1101).

6. The hydrostatic bearing for battery vibration testing according to claim 4, characterized in that, Along the length extension direction of the web (111), the web (111) is provided with a step, and the cross-sectional area of ​​at least one end of the web (111) decreases sequentially from the middle of the web (111) to the end of the web (111), and the part with the smaller cross-sectional area forms the buffer zone (1101).

7. The hydrostatic bearing for battery vibration testing according to claim 1, characterized in that, The bearing body (11) and the connector (12) are integrally formed.

8. The hydrostatic bearing for battery vibration testing according to claim 1, characterized in that, The support surface is provided with a plurality of threaded holes (1111), and the workpiece (100) is provided with a plurality of through holes. The threaded holes (1111) are provided in a one-to-one correspondence with the through holes. The hydrostatic bearing (10) also includes a plurality of threaded fasteners. The threaded fasteners are inserted into the corresponding through holes and are threadedly connected to the threaded holes (1111).

9. Vibration testing fixture, characterized in that, The device includes a bearing base (20), a vibration assembly (30), and a hydrostatic bearing (10) for battery vibration testing as described in any one of claims 1-8. The hydrostatic bearing (10) is provided on the bearing base (20). The hydrostatic bearing (10) is used to limit and support the workpiece (100) to be vibrated. The vibration assembly (30) is driven to the workpiece (100) so that the hydrostatic bearing (10) is movably disposed on the bearing base (20).

10. The vibration testing fixture according to claim 9, characterized in that, The bearing base (20) has a hydrostatic oil chamber (21) inside, the cross-sectional area of ​​the hydrostatic oil chamber (21) is larger than the cross-sectional area of ​​the hydrostatic bearing (10), and an ink zone (22) is provided between the inner wall of the hydrostatic oil chamber (21) and the hydrostatic bearing (10); a plurality of oil spray nozzles are uniformly provided on the bearing base (20) along the length extension direction of the hydrostatic oil chamber (21), one end of the oil spray nozzle is connected to the ink zone (22), and the other end of the oil spray nozzle is used to connect to the oil supply device.

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