Test fixture

Abstract

The invention provides a test fixture. The test fixture comprises an upper seat and two supporting plates, the upper ends of the two supporting plates are respectively provided with a plurality of adjusting through hole groups, and the plurality of adjusting through hole groups comprise a plurality of adjusting through holes which penetrate through the inner sides and the outer sides, are symmetrical from the centers of the supporting plates to the edges and are downwards and obliquely arranged. The upper seat is provided with two connecting sides and a clamping unit, the clamping unit is used for fixing a tested piece, each connecting side is provided with a first adjusting hole group and a second adjusting hole group, each adjusting hole group comprises a plurality of adjusting holes, and the positions of the adjusting holes correspond to the adjusting through holes. The adjusting through holes and the corresponding adjusting holes are connected through the multiple first locking pieces, the upper base is fixed between the two supporting plates, and the inclination angle of the upper base on the testing jig can be adjusted so that different testing angle requirements can be met.

Description

Technical Field

[0001] The present invention relates to a test fixture, in particular to a test fixture for axial testing of a floating joint. Through a hole group design that can adjust the inclination angle of the upper seat, the inclination angle of the upper seat can be flexibly adjusted to meet the test requirements of different angles, improving the stability and accuracy of the test. Background Art

[0002] A floating joint is a part specifically designed for quick docking and automatic correction of docking deviations, and is widely used in machinery or equipment that requires quick assembly and high-precision docking, such as data centers and cloud centers. Compared with traditional quick-release joints, the characteristic of a floating joint is that it can not only connect quickly, but also tolerate a certain degree of inclination and displacement during the docking process, and automatically adjust the docking surface to the correct position to ensure a stable connection effect. Therefore, the design of a floating joint not only needs to ensure the accuracy during the docking process, but also needs to deal with the possible skewed state and perform repeated corrections to maintain the reliability of its function.

[0003] The axial load during the docking of a floating joint often comes from the skewed angle caused by external forces or installation deviations, while the radial load is related to the lateral pressure that the joint may encounter during movement. When a floating joint performs skewed docking, its internal structure needs to withstand stresses in different directions and complete the correction process within a certain inclination range. This means that different stress distributions and structural deformations may occur in the floating joint under different inclination states. Therefore, axial and radial tests must be carried out to determine the maximum inclination range that it can tolerate.

[0004] For the axial test of the maximum reliable inclination degree to simulate the operation status of a floating joint in an extreme use environment, during the test process, the floating joint needs to be placed at different inclination angles, and a simulated axial load is applied to observe whether its correction and connection capabilities are affected.

[0005] However, currently during axial testing, there is still a problem that a special fixture needs to be replaced every time the test angle is adjusted. Since the test needs to simulate different inclination angles, the fixture needs to be replaced again every time the test angle is adjusted, which not only increases the complexity of the test, but also prolongs the time and cost required for the test. Therefore, there is a need in the market for a test fixture that can flexibly adjust the test inclination degree to solve the axial testing problem of the floating joint. Summary of the Invention

[0006] Therefore, to effectively solve the above problems, the main object of the present invention is to provide a test fixture for axial testing of a floating joint, and the inclination degree of the upper seat of the test fixture can be adjusted as needed.

[0007] To achieve the above object, the present invention provides a test fixture, which is applied to the axial test of a first test piece. The test fixture is characterized in that it includes two support plates and an upper seat, wherein:

[0008] The two support plates each include:

[0009] An upper side, a lower side, an inner side and an outer side;

[0010] A first adjustment through-hole group and a second adjustment through-hole group, which are respectively arranged at positions close to the upper side. The first adjustment through-hole group and the second adjustment through-hole group each include a plurality of adjustment through-holes penetrating the inner side and the outer side. The plurality of adjustment through-holes are symmetrically and downwardly inclined and arranged in the direction from the center to the edge of the support plate;

[0011] The upper seat has two connection sides and a clamping unit for clamping the first test piece. The two connection sides each include:

[0012] A first adjustment hole group and a second adjustment hole group, each including a plurality of adjustment holes. The positions of the adjustment holes in the first adjustment hole group and the second adjustment hole group respectively correspond to the positions of the adjustment through-holes in the first adjustment through-hole group and the second adjustment through-hole group;

[0013] A plurality of locking members, including a plurality of first locking members. The plurality of first locking members 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] By means of the above locking members, the upper seat is fixed between the upper sides of the two support plates, and by selecting the combination of the adjustment through-holes and the adjustment holes through which the plurality of first locking members pass, the inclination of the upper seat on the test fixture is adjusted.

[0015] The test fixture described above is characterized in that the two support plates also each include:

[0016] An adjustment portion, which is arranged on the inner side and is a structure protruding from the surface of the inner side. The adjustment portion has:

[0017] A central flat convex platform; and

[0018] Two inclined convex surfaces, which are respectively located at both ends of the central flat convex platform and symmetrically extend outwardly and gradually incline from both ends of the central flat convex platform;

[0019] Wherein, the two connection sides of the upper seat respectively abut on the adjustment portions of the two support plates.

[0020] The described 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 described 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 pitch of the plurality of adjustment holes of the first adjustment hole group and the second adjustment hole group is set according to the positions of the plurality of adjustment through holes of the corresponding first adjustment through hole group and the second adjustment through hole group.

[0022] The described test fixture, wherein: when the upper seat only abuts against the central flat boss of the adjustment part, the upper seat is arranged in a horizontal state.

[0023] The described test fixture, wherein: 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 arranged in an inclined state.

[0024] The described test fixture, wherein: the base further includes a threaded through hole having an internal thread for fixing a second test piece and connecting a test device.

[0025] The described test fixture, wherein: after the base, the upper seat and the two support plates are assembled, an operation space is defined. Inside the operation space, the first test piece and the second test piece are connected by a connecting piece.

[0026] Aiming at the deficiencies of the prior art, the test fixture of the present invention successfully solves the problems of low test efficiency and increased cost caused by the frequent replacement of fixtures in the prior art. By making the adjustment through hole groups on the support plates correspond to the adjustment hole groups of the upper seat and combining with the adjustment part structure protruding relative to the inner surface of the support plate, the present invention realizes the flexible adjustment of the inclination angle of the upper seat, and has a simple structure, convenient operation, improves the adaptability of the test device and the flexibility and compatibility of the test process, can shorten the time of axial testing, reduces the overall operation cost, and meets the high-standard requirements for the reliability testing of floating joints. Brief Description of the Drawings

[0027] Figure 1 Is a three-dimensional exploded view of the test fixture of the present invention;

[0028] Figure 2 Is a three-dimensional schematic diagram of the test fixture of the present invention;

[0029] Figure 3A Is a schematic diagram of the inner side of the support plate of the test fixture of the present invention;

[0030] Figure 3B Is a schematic diagram of the outer side of the support plate of the test fixture of the present invention;

[0031] Figure 4A 、Figure 4B , Figure 4C are respectively schematic diagrams of the upper seat of the test fixture of the present invention tilted at different angles.

[0032] Explanation of reference numerals: test fixture 1; upper seat 10; first adjustment hole group 11; second adjustment hole group 12; clamping unit 13; first locking member 14; second locking member 15; support plate 20; first adjustment through-hole group 21; second adjustment through-hole group 22; adjustment portion 24; central flat convex platform 241; inclined convex surface 242; second locking through-hole 26; base 30; threaded through-hole 31; first locking hole 32; operation space 40; floating joint 50; hose 51; adapter 52. Detailed Description of the Invention

[0033] The above objects, structures and functional characteristics of the present invention will be described with reference to the preferred embodiments shown in the accompanying drawings.

[0034] At the same time, refer to Figure 1 , Figure 2 , Figure 3A and Figure 3B , which are respectively the three-dimensional exploded view, three-dimensional schematic view of the test fixture 1 of the present invention and the inner and outer schematic views of the support plate 20. The present invention provides a test fixture 1, which includes 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 vertically corresponding. 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. As shown in Figure 2 , the upper seat 10, the two support plates 20 and the base 30 jointly define an operation space 40. A tester can assemble the upper end of a connecting member (such as a hose 51) originally installed on a second test piece (such as an adapter 52) on the base 30 with an interface of a first test piece (such as a floating joint 50) fixed on the upper seat 10 within the operation space 40 for subsequent testing.

[0035] The upper seat 10 has two connecting sides, which are respectively located on the left and right sides of the upper seat 10. 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 adjustment hole is set corresponding to the positions of a plurality of adjustment through-holes arranged 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 respectively located on the left and right sides of the two connecting sides and are 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 positions of the corresponding adjustment through-holes in the first adjustment through-hole group 21 and the second adjustment through-hole group 22. As shown in Figure 2As shown, a plurality of first fasteners 14 respectively pass through an adjustment through-hole in the first adjustment through-hole group 21 and the second adjustment through-hole group 22 and are connected to corresponding adjustment holes in the first adjustment hole group 11 and the second adjustment hole group 12 to fix the upper seat 10 between the upper sides of the two support plates 20. These adjustment hole groups and adjustment through-hole groups are used in cooperation to adjust the inclination angle of the upper seat 10 to meet different test requirements.

[0036] The upper seat 10 further has a clamping unit 13 for clamping and fixing the floating joint 50 on the upper seat 10 to perform an axial test on the floating joint 50.

[0037] Adjustment portions 24 are provided on the opposite inner sides of the two support plates 20. The adjustment portions 24 are structures protruding relative to the inner surface of the support plates 20. The adjustment portion 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] As Figure 3A shown, in the height direction of the support plate 20, the central flat boss 241 is located between the two inclined convex surfaces 242, presenting a horizontal straight plane. The two inclined convex surfaces 242 are respectively located at both ends of the central flat boss 241 and symmetrically extend gradually obliquely outward from both ends of the central flat boss 241 to the outside of the support plate 20. Looking from the inner side of the support plate 20, the central flat boss 241 and the two inclined convex surfaces 242 form a platform structure similar to an isosceles trapezoid.

[0039] The adjustment through-holes in the first adjustment through-hole group 21 and the second adjustment through-hole group 22 are respectively located near the two corners on the upper side of the support plate 20 and penetrate through the outer side and the inner side 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 gradually inclined downward or upward from the center of the support plate 20 to the edge (from the inside to the outside) and are symmetrically arranged horizontally. The position of each adjustment through-hole corresponds to a different inclination angle. For example, the outermost adjustment through-hole corresponds to 0 degrees, and inward in sequence are 1.5 degrees, 3 degrees, 4.5 degrees, but not limited thereto. The arrangement, inclination angle, and number of the 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 the test requirements. Such a design allows the upper seat 10 to be fixed to the two support plates 20 at different angles to adapt to various angular test requirements.

[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 respectively locked to the corresponding adjustment holes in the first adjustment hole group 11 and the second adjustment hole group 12 on the two connection sides of the upper seat 10 through the first fasteners 14, the upper seat 10 abuts against different positions of the adjustment portion 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 respectively 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 convex platform 241, and the upper seat 10 presents 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 holes of the second adjustment hole group 12 are locked with the corresponding adjustment through holes of the second adjustment through hole group 22, the upper seat 10 only abuts against the junction of the central flat convex platform 241 and the inclined convex surface 242, and the upper seat 10 presents 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 convex platform 241 and the inclined convex surface 242, presenting the maximum inclination angle, which is used for test scenarios with the highest angle operation.

[0043] A plurality of first locking holes 32 are provided on the left and right sides of the base 30, and corresponding second locking through holes 26 are provided on the lower sides of the two support plates 20. The second locking member 15 passes through the second locking through holes 26 and is locked with the first locking holes 32 to fix the base 30 between the lower sides of the two support plates 20, forming a stable structural support. A threaded through hole 31 with an internal thread is provided on the base 30. The adapter 52 can be screwed into the threaded through hole 31 through the internal thread to ensure a firm 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, and the lower end is used to connect the axial pressure testing device to conduct pressure medium circulation loop sealing to ensure stability and accuracy during the test. The base 30 can be easily disassembled and replaced to adapt to different sizes or through hole diameters of the adapter 52 to meet various test requirements.

[0044] A plurality of machine connection holes (not shown) penetrating from the upper side to the lower side can be further provided on the base 30 for fixing the base 30 on an axial pressure testing device (not shown), achieving the effect that the test fixture 1 can be positioned on the axial pressure testing device and stably transmitting the pressure medium during the test. The positions of the machine connection holes can be designed according to the requirements of the testing device to further improve the stability during the test.

[0045] The first locking member 14 and the second locking member 15 can be screws or any mechanism that can be used for fixing and locking.

[0046] Figure 4A 、 Figure 4B 、Figure 4C These are schematic diagrams of the upper seat 10 of the test fixture 1 of the present invention tilted at different angles. As Figure 4A 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 respectively 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 inclination angle is 0 degree, and the upper seat 10 abuts against the central flat boss 241.

[0047] As Figure 4B 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 counted from the 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 inclination angle 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 presents a state of being inclined at 1.5 degrees.

[0048] As Figure 4C 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 counted from the 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 inclination angle 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 presents a state of being inclined at 3 degrees.

[0049] In short, after the tester locks the outermost adjustment through hole of the first adjustment through hole group 21 or the second adjustment through hole group 22 with the outermost adjustment hole of the corresponding adjustment hole group, and then selects to lock the adjustment through hole in the other adjustment through hole group with the adjustment hole in the corresponding adjustment hole group according to the required inclination angle for testing, the upper seat 10 will tilt and be fixed according to the required inclination angle.

[0050] The tester first assembles the test fixture 1 according to the required inclination angle for testing. When the floating joint 50 needs to be tested, the floating joint 50 is clamped on the upper seat 10, and then the adapter 52 installed on the threaded through hole 31 of the base 30, and the hose 51 connected to its upper end is assembled with the interface of the floating joint 50. After the assembly is completed, the axial test process can be carried out.

[0051] The present invention provides a test fixture 1 with an adjustable inclination angle of the upper seat 10 for fixing and performing axial testing of the floating joint 50. Its structure is stable, simple and has the function of adjustable test inclination. At the same time, the detachable and matching assembly design among the upper seat 10, the support plate 20 and the base 30 makes the overall fixture flexible, can be quickly adjusted according to different angle test requirements, and further improves the test 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: The two support plates each include: One upper side, one lower side, one medial side and one lateral side; A first adjustment through hole group and a second adjustment through hole group are respectively arranged at positions close to the upper side, the first adjustment through hole group and the second adjustment through hole group each comprising a plurality of adjustment through holes penetrating the inner side and the outer side, the plurality of adjustment through holes being symmetrically arranged from the center to the edge of the support plate and tilted downward; The upper seat has two connection sides and a clamping unit, the clamping unit is used to clamp the first tested piece, and the two connection sides each include: A first adjustment hole group and a second adjustment hole group, each comprising a plurality of adjustment holes, the positions of the adjustment holes in the first adjustment hole group and the second adjustment hole group respectively corresponding to the positions of the adjustment through holes in the first adjustment through hole group and the second adjustment through hole group; A plurality of locking members, including a plurality of first locking members, each of which passes 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 is further connected to a corresponding adjustment hole in the first adjustment hole group and a corresponding adjustment hole in the second adjustment hole group; By means of the above-mentioned fasteners, the upper seat is fixed between the upper sides of the two support plates, and the inclination of the upper seat on the test fixture is adjusted by selecting a combination of the adjustment through holes through which the plurality of first fasteners pass and the adjustment holes.

2. The test fixture according to claim 1, characterized in that: The two support plates also each include: An adjustment portion is disposed on the inner side and is a structure protruding relative to the surface of the inner side. The adjustment portion has: a central flat boss; and Two inclined convex surfaces are respectively located at two ends of the central flat boss and extend symmetrically and gradually outward from the two ends of the central flat boss; The two connecting sides of the upper seat respectively abut against the adjusting parts of the two supporting plates.

3. The test fixture as claimed in claim 1, characterized in that: A base is arranged between the lower sides of the two supporting plates, and the base is located below the upper seat.

4. The test fixture as claimed in claim 1, characterized in that: 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 positions of the plurality of adjustment holes of the corresponding first adjustment through hole group and the second adjustment through hole group.

5. The test fixture as claimed in claim 2, characterized in that: When the upper seat only abuts against the central straight boss of the adjusting portion, the upper seat is arranged in a horizontal state.

6. The test fixture as claimed in claim 2, characterized in that: When the upper seat only abuts against the junction between the central straight boss of the adjusting portion and one of the two inclined convex surfaces, the upper seat is arranged in an inclined state.

7. The test fixture as claimed in claim 3, characterized in that: The base also includes a threaded through hole having an internal thread for fixing a second tested component and connecting a testing device.

8. The test fixture as claimed in claim 7, characterized in that: The base, the upper seat and the two support plates are assembled to define an operation space, and in the operation space, the first tested component and the second tested component are connected via a connecting member.

Images