Test fixture
By designing a test fixture with an adjustable upper seat tilt, the problem of frequent fixture replacements in axial testing of floating joints was solved, improving testing efficiency and reducing costs, while meeting high-standard testing requirements.
Patent Information
- Application Number
- CN202520541493.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-03-26
AI Technical Summary
In existing technologies, axial testing of floating joints requires frequent fixture changes, resulting in low testing efficiency and increased costs, and the testing tilt cannot be flexibly adjusted.
A test fixture was designed. By cooperating with the adjustment through hole group on the support plate and the adjustment hole group on the upper seat, combined with the adjustment part structure on the inner side of the support plate, the tilt angle of the upper seat can be flexibly adjusted. The connection between the upper seat and the support plate at different angles is fixed by fasteners.
It enables flexible adjustment of the upper seat tilt angle, improves the adaptability and flexibility of the testing equipment, shortens the testing time, reduces operating costs, and meets the high standard requirements for floating joint reliability testing.
Smart Images
Figure CN223841452U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a test fixture, and more particularly to a test fixture for axial testing of floating joints. Through the design of a hole group that allows for adjustable tilt angle of the upper seat, the tilt angle of the upper seat can be flexibly adjusted to adapt to testing requirements at different angles, thereby improving the stability and accuracy of the test. Background Technology
[0002] Floating joints are components specifically designed for rapid assembly and automatic correction of misalignment. They are widely used in machinery and equipment requiring rapid assembly and high-precision docking, such as data centers and cloud computing centers. Compared to traditional quick-release joints, floating joints not only enable rapid connection but also tolerate a certain degree of tilt and displacement during the docking process, automatically adjusting the docking surfaces to the correct position to ensure a stable connection. Therefore, the design of floating joints not only needs to guarantee accuracy during the docking process but also needs to handle potential misalignment, repeatedly correcting to maintain functional reliability.
[0003] The axial load during floating joint mating often originates from external forces or misalignment caused by installation deviations, while the radial load is related to the lateral pressure the joint may encounter during movement. When a floating joint is mated at an angle, its internal structure needs to withstand stresses in different directions and complete the correction process within a certain tilt range. This means that the floating joint may exhibit different stress distributions and structural deformations under different tilt states; therefore, axial and radial tests must be conducted to determine its maximum tolerable tilt range.
[0004] For the axial test of the maximum reliable tilt angle of the simulated floating joint under extreme operating conditions, the floating joint needs to be placed at different tilt angles and simulated axial loads applied to observe whether its correction and connection capabilities are affected.
[0005] However, current axial testing still faces the problem of requiring the replacement of a dedicated fixture every time the test angle is adjusted. Since the test needs to simulate different tilt angles, the fixture needs to be replaced each time the test angle is adjusted, which not only increases the complexity of the test but also prolongs the testing time and costs. Therefore, the market needs a test fixture that can flexibly adjust the test tilt to solve the axial testing problem of floating joints. Utility Model Content
[0006] Therefore, in order to effectively solve the above problems, the main purpose of this utility model is to provide a test fixture for axial testing of floating joints, wherein the inclination of the upper seat of the test fixture can be adjusted as needed.
[0007] To achieve the above objectives, this utility model provides a test fixture for axial testing of a first test piece, characterized in that the test fixture includes two support plates and an upper seat, wherein:
[0008] Each of the two support plates contains:
[0009] One upper side, one lower side, one inner side, and one outer side;
[0010] A first adjustment through hole group and a second adjustment through hole group are respectively disposed near the upper side. Each of the first adjustment through hole group and the second adjustment through hole group includes a plurality of adjustment through holes penetrating the inner side and the outer side. The plurality of adjustment through holes are arranged symmetrically and inclined downward from the center of the support plate to the edge.
[0011] The upper seat has two connecting sides and a clamping unit for clamping the first test piece. Each of the two connecting sides includes:
[0012] A first adjustment hole group and a second adjustment hole group, each containing a plurality of adjustment holes, wherein the position of each adjustment hole in the first adjustment hole group and the second adjustment hole group corresponds to the position of each adjustment through hole in the first adjustment through hole group and the second adjustment through hole group, respectively;
[0013] The plurality of locking fasteners includes a plurality of first locking fasteners, which respectively pass through an adjustment through hole in the first adjustment through hole group and an adjustment through hole in the second adjustment through hole group, and are further connected to a corresponding adjustment hole in the first adjustment hole group and a corresponding adjustment hole in the second adjustment hole group;
[0014] The upper seat is fixed between the upper sides of the two support plates by means of the aforementioned fasteners, and the tilt of the upper seat on the test fixture is adjusted by selecting the combination of the adjustment through holes and the adjustment holes through which the plurality of first fasteners pass.
[0015] The test fixture is characterized in that each of the two support plates further comprises:
[0016] An adjustment portion is provided on the inner side and has a structure that protrudes relative to the surface of the inner side. The adjustment portion has:
[0017] A central, straight boss; and
[0018] Two inclined convex surfaces are located at both ends of the central flat boss, and extend outward symmetrically from both ends of the central flat boss.
[0019] The two connecting sides of the upper seat abut against the adjusting parts of the two support plates.
[0020] The test fixture, wherein: a base is provided between the lower sides of the two support plates, and the base is located below the upper seat.
[0021] The test fixture, wherein: the plurality of adjustment holes of the first adjustment hole group and the second adjustment hole group are arranged horizontally; and the arrangement spacing of the plurality of adjustment holes of the first adjustment hole group and the second adjustment hole group is set according to the position of the plurality of adjustment through holes of the corresponding first adjustment through hole group and the second adjustment through hole group.
[0022] The test fixture is configured in a horizontal state when the upper seat is only against the central flat boss of the adjustment part.
[0023] The test fixture is provided in an inclined state when the upper seat is only against the junction of the central flat boss of the adjustment part and one of the two inclined convex surfaces.
[0024] The test fixture further includes a threaded through hole with an internal thread for fixing a second test piece and connecting a test device.
[0025] The test fixture, wherein: the base, the upper seat and the two support plates, after being assembled, define an operating space, and within the operating space, the first test piece and the second test piece are connected by a connector.
[0026] This invention addresses the shortcomings of existing technologies, successfully solving the problems of low testing efficiency and increased costs caused by frequent fixture replacements. By aligning the adjustment through-holes on the support plate with the adjustment holes on the upper seat, and combining this with an adjustment section protruding from the inner surface of the support plate, this invention achieves flexible adjustment of the upper seat's tilt angle. It features a simple structure, convenient operation, and improved adaptability of the testing equipment, as well as flexibility and compatibility in the testing process. It can shorten axial testing time, reduce overall operating costs, and meet the high standards required for floating joint reliability testing. Attached Figure Description
[0027] Figure 1 This is an exploded perspective view of the testing fixture of this utility model;
[0028] Figure 2 This is a three-dimensional schematic diagram of the testing fixture of this utility model;
[0029] Figure 3A This is a schematic diagram of the inner side of the support plate of the test fixture of this utility model;
[0030] Figure 3B This is a schematic diagram of the outer side of the support plate of the test fixture of this utility model;
[0031] Figure 4A , Figure 4B , Figure 4C These are schematic diagrams showing the upper seat of the test fixture of this utility model tilted at different angles.
[0032] Explanation of reference numerals in the attached drawings: Test fixture 1; Upper seat 10; First adjustment hole group 11; Second adjustment hole group 12; Clamping unit 13; First locking fastener 14; Second locking fastener 15; Support plate 20; First adjustment through hole group 21; Second adjustment through hole group 22; Adjustment part 24; Central flat boss 241; Inclined convex surface 242; Second locking through hole 26; Base 30; Threaded through hole 31; First locking hole 32; Operating space 40; Floating connector 50; Hose 51; Adapter 52. Detailed Implementation
[0033] The above-mentioned objectives of this utility model and its structural and functional characteristics will be described with reference to the preferred embodiments shown in the accompanying drawings.
[0034] See also Figure 1 , Figure 2 , Figure 3A and Figure 3B These are, respectively, an exploded perspective view, a perspective schematic view, and inner and outer side schematic views of the support plate 20 of the test fixture 1 of this utility model. This utility model provides a test fixture 1, comprising an upper seat 10, two support plates 20, and a base 30. The upper seat 10 and the base 30 are located between the two support plates 20 and are positioned vertically opposite each other. The two connecting sides of the upper seat 10 are respectively connected to the upper sides of the two support plates 20, and the left and right sides of the base 30 are respectively connected to the lower sides of the two support plates 20. The base 30 is located below the upper seat 10. Figure 2 As shown, the upper seat 10, the two support plates 20 and the base 30 together define the operating space 40. Within the operating space 40, the tester can assemble the upper end of the connector (e.g., hose 51) that was originally installed on the base 30 to the interface of the first test piece (e.g., floating connector 50) fixed on the upper seat 10 for subsequent testing.
[0035] The upper seat 10 has two connecting sides, located on the left and right sides respectively. Each connecting side is provided with a first adjustment hole group 11 and a second adjustment hole group 12. The first adjustment hole group 11 and the second adjustment hole group 12 contain a plurality of adjustment holes, each corresponding to the position of the plurality of adjustment through holes in the first adjustment through hole group 21 and the second adjustment through hole group 22 on the support plate 20. The first adjustment hole group 11 and the second adjustment hole group 12 are located on the left and right sides of the two connecting sides, arranged horizontally symmetrically. The spacing between the adjustment holes in the first adjustment hole group 11 and the second adjustment hole group 12 is set according to the position of the corresponding adjustment through holes in the first adjustment through hole group 21 and the second adjustment through hole group 22. Figure 2 As shown, the upper seat 10 is fixed between the upper sides of the two support plates 20 by means of a plurality of first locking fasteners 14 passing through one of the adjustment through holes in the first adjustment through hole group 21 and the second adjustment through hole group 22 respectively, and connecting with the corresponding adjustment holes in the first adjustment hole group 11 and the second adjustment hole group 12. These adjustment hole groups and adjustment through hole groups are used in conjunction with each other to adjust the tilt angle of the upper seat 10 to meet different testing requirements.
[0036] The upper seat 10 also has a clamping unit 13 for clamping and fixing the floating joint 50 on the upper seat 10 for axial testing of the floating joint 50.
[0037] Each of the two support plates 20 has an adjustment part 24 on its inner side. The adjustment part 24 is a structure that protrudes relative to the inner surface of the support plate 20. The adjustment part 24 includes a central flat boss 241 and two inclined convex surfaces 242. The central flat boss 241 and the two inclined convex surfaces 242 are respectively connected to the inner surface and protrude outward from the inner surface, forming a 90-degree angle with the inner surface.
[0038] like Figure 3A As shown, in the height direction of the support plate 20, the central straight boss 241 is located between the two inclined convex surfaces 242, forming a horizontal straight plane. The two inclined convex surfaces 242 are located at both ends of the central straight boss 241, gradually extending outward from the ends of the central straight boss 241 symmetrically towards the outside of the support plate 20. Viewed from the inside of the support plate 20, the central straight boss 241 and the two inclined convex surfaces 242 form a platform structure resembling an isosceles trapezoid.
[0039] Each adjustment through hole in the first adjustment through hole group 21 and the second adjustment through hole group 22 is located near the two corners on the upper side of the support plate 20 and extends through the outer and inner sides of the support plate 20. The adjustment through holes in the first adjustment through hole group 21 and the second adjustment through hole group 22 are arranged laterally and symmetrically, gradually tilting downwards or upwards from the center of the support plate 20 towards the edge (from the inside out). The position of each adjustment through hole corresponds to a different tilt angle; for example, the outermost adjustment through hole corresponds to 0 degrees, and the angles inwards are 1.5 degrees, 3 degrees, and 4.5 degrees, but this is not a limitation. The arrangement, tilt angle, and number of adjustment through holes in the first adjustment through hole group 21 and the second adjustment through hole group 22 can be flexibly set according to testing requirements. This design allows the upper seat 10 to be fixed to the two support plates 20 at different angles, adapting to testing requirements at various angles.
[0040] When the adjustment through holes in the first adjustment through hole group 21 and the second adjustment through hole group 22 on the support plate 20 are locked to the corresponding adjustment holes in the first adjustment hole group 11 and the second adjustment hole group 12 on the two connecting sides of the upper seat 10 through the first locking fastener 14, the upper seat 10 abuts against different positions of the adjustment part 24.
[0041] When the outermost adjustment holes of the first adjustment hole group 11 and the second adjustment hole group 12 of the upper seat 10 are locked with the outermost adjustment through holes of the first adjustment through hole group 21 and the second adjustment through hole group 22 of the support plate 20, the upper seat 10 abuts against the central flat boss 241, and the upper seat 10 is in a horizontal state with an inclination of 0 degrees, which is used for test scenarios that require horizontal operation.
[0042] When the outermost adjustment hole of the first adjustment hole group 11 of the upper seat 10 is locked with the outermost adjustment through hole of the first adjustment through hole group 21 of the support plate 20, and the non-outermost adjustment hole of the second adjustment hole group 12 is locked with the corresponding adjustment through hole of the second adjustment through hole group 22, the upper seat 10 only abuts against the junction of the central flat boss 241 and the inclined convex surface 242, and the upper seat 10 is in an inclined state. For example, when the outermost adjustment hole of the first adjustment hole group 11 is locked with the outermost adjustment through hole of the first adjustment through hole group 21 of the support plate 20, and the innermost adjustment hole of the second adjustment hole group 12 is locked with the innermost adjustment through hole of the second adjustment through hole group 22 of the support plate 20, the upper seat 10 only abuts against the junction of the central flat boss 241 and the inclined convex surface 242, presenting the maximum tilt angle, which is used for the test scenario of the highest angle operation.
[0043] The base 30 has multiple first locking holes 32 on its left and right sides, while the lower sides of the two support plates 20 have corresponding second locking through holes 26. Second locking fasteners 15 pass through the second locking through holes 26 and lock to the first locking holes 32, fixing the base 30 between the lower sides of the two support plates 20 to form a stable structural support. The base 30 has a threaded through hole 31 with internal threads. The adapter 52 can be screwed into the threaded through hole 31 via its internal threads, ensuring a secure connection between the adapter 52 and the base 30. The upper end of the threaded through hole 31 can be used to fix the adapter 52, while the lower end is used to connect to axial pressure testing equipment for sealing the pressure medium flow loop, ensuring stability and accuracy during testing. The base 30 can be easily disassembled and replaced to accommodate adapters 52 of different sizes or through hole diameters to meet various testing needs.
[0044] The base 30 may also be provided with multiple machine connection holes (not shown) extending from the top to the bottom, for fixing the base 30 on the axial pressure testing equipment (not shown), so that the test fixture 1 can be positioned on the axial pressure testing equipment and stably transmit the pressure medium during the test. The position of the machine connection holes can be designed according to the requirements of the testing equipment to further improve the stability during the test.
[0045] The first locking component 14 and the second locking component 15 can be screws or any mechanism that can secure and lock the device.
[0046] Figure 4A , Figure 4B, Figure 4C These are schematic diagrams showing the upper seat 10 of the test fixture 1 of this utility model tilted at different angles. Figure 4A As shown, when the outermost adjustment holes of the first adjustment hole group 11 and the second adjustment hole group 12 of the upper seat 10 are locked with the outermost adjustment through holes of the first adjustment through hole group 21 and the second adjustment through hole group 22 of the support plate 20 respectively, the inclination is 0 degrees, and the upper seat 10 abuts against the central flat boss 241.
[0047] like Figure 4B As shown, when the outermost adjustment hole of the first adjustment hole group 11 of the upper seat 10 is locked with the outermost adjustment through hole of the first adjustment through hole group 21 of the support plate 20, and the second adjustment hole of the second adjustment hole group 12 counting inward from the outermost adjustment hole is locked with the adjustment through hole of the corresponding second adjustment through hole group 22, the inclination is 1.5 degrees, and the upper seat 10 only abuts against the junction of the central flat boss 241 and the inclined convex surface 242, and the upper seat 10 is in an inclined state of 1.5 degrees.
[0048] like Figure 4C As shown, when the outermost adjustment hole of the first adjustment hole group 11 of the upper seat 10 is locked with the outermost adjustment through hole of the first adjustment through hole group 21 of the support plate 20, and the third adjustment hole of the second adjustment hole group 12 counting inward from the outermost adjustment hole is locked with the corresponding adjustment through hole of the second adjustment through hole group 22, the inclination is 3 degrees, and the upper seat 10 only abuts against the junction of the central flat boss 241 and the inclined convex surface 242, and the upper seat 10 is in an inclined state of 3 degrees.
[0049] In short, after the tester locks the outermost adjustment through hole of the first adjustment through hole group 21 or the outermost adjustment hole of the corresponding adjustment hole group, the tester then selects to lock the adjustment through hole in another adjustment through hole group to the adjustment hole in the corresponding adjustment hole group according to the tilt angle required for the test. The upper seat 10 will then tilt and be fixed according to the required tilt angle.
[0050] The tester first assembles the test fixture 1 according to the tilt angle required for the test. When the floating joint 50 needs to be tested, the floating joint 50 is clamped on the upper seat 10. Then, the adapter 52, which is installed on the threaded through hole 31 of the base 30, and the hose 51 connected to its upper end are assembled with the interface of the floating joint 50. After the assembly is completed, the axial test process can be carried out.
[0051] This invention provides a test fixture 1 with an adjustable upper seat 10 tilt angle for fixing and performing axial testing of a floating joint 50. Its structure is stable and simple, and it features adjustable test tilt angle. Furthermore, the detachable and combinable design of the upper seat 10, support plate 20, and base 30 makes the overall fixture flexible, allowing for quick adjustments to meet different testing angle requirements, further improving testing efficiency and accuracy.
Claims
1. A test fixture, used for axial testing of a first test piece, characterized in that, The test fixture includes two support plates and an upper seat, wherein: Each of the two support plates contains: One upper side, one lower side, one inner side, and one outer side; A first adjustment through hole group and a second adjustment through hole group are respectively disposed near the upper side. Each of the first adjustment through hole group and the second adjustment through hole group includes a plurality of adjustment through holes penetrating the inner side and the outer side. The plurality of adjustment through holes are arranged symmetrically and inclined downward from the center of the support plate to the edge. The upper seat has two connecting sides and a clamping unit for clamping the first test piece. Each of the two connecting sides includes: A first adjustment hole group and a second adjustment hole group, each containing a plurality of adjustment holes, wherein the position of each adjustment hole in the first adjustment hole group and the second adjustment hole group corresponds to the position of each adjustment through hole in the first adjustment through hole group and the second adjustment through hole group, respectively; The plurality of locking fasteners includes a plurality of first locking fasteners, which respectively pass through an adjustment through hole in the first adjustment through hole group and an adjustment through hole in the second adjustment through hole group, and are further connected to a corresponding adjustment hole in the first adjustment hole group and a corresponding adjustment hole in the second adjustment hole group; The upper seat is fixed between the upper sides of the two support plates by means of the aforementioned fasteners, and the tilt of the upper seat on the test fixture is adjusted by selecting the combination of the adjustment through holes and the adjustment holes through which the plurality of first fasteners pass.
2. The test fixture as described in claim 1, characterized in that, Each of the two support plates also includes: An adjustment portion is provided on the inner side and has a structure that protrudes relative to the surface of the inner side. The adjustment portion has: A central, straight boss; and Two inclined convex surfaces are located at both ends of the central flat boss, and extend outward symmetrically from both ends of the central flat boss. The two connecting sides of the upper seat abut against the adjusting parts of the two support plates.
3. The test fixture as described in claim 1, characterized in that: A base is provided between the lower sides of the two support plates, and the base is located below the upper seat.
4. The test fixture as described in claim 1, characterized in that: The plurality of adjustment holes in the first adjustment hole group and the second adjustment hole group are arranged horizontally; and the spacing between the plurality of adjustment holes in the first adjustment hole group and the second adjustment hole group is set according to the position of the plurality of adjustment through holes in the corresponding first adjustment through hole group and the second adjustment through hole group.
5. The test fixture as described in claim 2, characterized in that: When the upper seat only abuts against the central flat boss of the adjustment part, the upper seat is set in a horizontal state.
6. The test fixture as described in claim 2, characterized in that: When the upper seat only abuts against the junction of the central flat boss of the adjustment part and one of the two inclined convex surfaces, the upper seat is set in an inclined state.
7. The test fixture as described in claim 3, characterized in that: The base also includes a threaded through hole with internal threads for fixing a second test piece and connecting a test device.
8. The test fixture as described in claim 7, characterized in that: The base, the upper seat, and the two support plates, when assembled, define an operating space. Within this operating space, the first test piece and the second test piece are connected by a connector.