Positioning device

Abstract

The utility model discloses a positioning device which is used for clamping and fixing a polygonal piece to be tested on a test platform, and belongs to the technical field of battery test. The positioning device comprises a plurality of clamp units, each clamp unit comprises a clamp body and a connecting piece, the clamp bodies and a plurality of corners of the to-be-tested piece are arranged in a one-to-one correspondence mode, and the clamp bodies are detachably installed on the testing platform through the connecting pieces. In addition, the clamp body is provided with a clamping structure, and the clamping structure can clamp and fix the corner part of the to-be-tested piece on the test platform. By means of the arrangement, compared with an existing positioning clamp, the number of used clamp units can be effectively reduced, so that the manufacturing cost is saved, the arrangement position of the clamp body can be adjusted according to needs, the assembly gap between the clamping structure and the to-be-tested piece is eliminated, and the clamping stability is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery testing, and in particular relates to a positioning device. Background Art

[0002] In order to improve the safety of battery use, it is necessary to strictly control it during the production process. For example, when performing a vibration test on the PACK box, the PACK box is clamped and installed on the test platform by using a positioning device. The test platform vibrates the PACK box to obtain the performance parameters of the PACK box when it is used in scenarios such as vehicle driving and industrial equipment use.

[0003] At present, eight positioning fixtures are used to clamp the PACK box, and the sides of the PACK box are locked on the vibration test platform in groups of two. More tooling is used, the cost is high, and there is an assembly gap with the PACK box in the horizontal direction. It is difficult to fix the PACK box firmly during the vibration process, which affects the test results. It is also easy to collide with the PACK box, causing damage to the PACK box and reducing its service life.

[0004] Based on the above, there is an urgent need for a positioning device to solve the technical problems existing in the prior art. Utility Model Content

[0005] The utility model aims to provide a positioning device for solving the technical problems that the existing positioning device has an assembly gap with the workpiece to be tested in the horizontal direction, resulting in unstable fixing effect and easy collision damage.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A positioning device, used for clamping and fixing a polygonal workpiece to be tested on a test platform, comprises a plurality of fixture units, wherein the fixture units comprise a fixture body and a connecting piece, wherein the fixture bodies are arranged opposite to a plurality of corners of the workpiece to be tested one by one, and all the fixture bodies are detachably mounted on the test platform via the connecting piece, and the fixture body has a clamping structure, and the clamping structure is configured to clamp and fix the corners of the workpiece to be tested on the test platform.

[0008] Optionally, the clamping structure includes a first clamping portion and a second clamping portion, the first clamping portion is pressed against the surface of the test piece away from the test platform, and the second clamping portion includes two clamping blocks, each of which is pressed against the side of the test piece to cooperate to clamp the corner of the test piece.

[0009] Optionally, the clamping block is in a columnar structure and has an arc-shaped clamping surface, the arc-shaped clamping surface is arranged to fit the side of the test piece, and the two clamping blocks are arranged at intervals.

[0010] Optionally, the first clamping portion is protruding from one end of the fixture body toward the piece to be tested, and the stepped connection surface between the first clamping portion and the fixture body 11 abuts against the side of the clamping block facing away from the piece to be tested.

[0011] Optionally, the stepped connection surface has a groove, and the groove is arranged around a portion of a side of the clamping block facing away from the device to be tested.

[0012] Optionally, the stepped connection surface further has a avoidance groove, and the opening of the avoidance groove faces the corner of the piece to be tested.

[0013] Optionally, an adjustment hole is provided on one end of the fixture body away from the test piece; the fixture unit also includes an adjusting member, the adjusting member includes a second threaded portion and a second end cap portion, the second threaded portion is threadedly connected to the adjustment hole, and the opposite ends of the second end cap portion are respectively abutted against the test platform and the fixture body.

[0014] Optionally, the clamp unit further includes a buffer layer disposed on the clamping structure, and the buffer layer is sandwiched between the clamping structure and the test piece.

[0015] Optionally, a waist-shaped hole is opened on the fixture body along the axial direction close to or away from the axial direction of the test piece; the first connecting structure includes a connecting threaded hole arranged on the test platform, and the second connecting structure includes a first threaded portion and a first end cap portion, the first threaded portion is threadedly connected to the connecting threaded hole through the waist-shaped hole, and the first end cap portion abuts against the bracket.

[0016] Optionally, the test platform is provided with a plurality of connecting threaded holes circumferentially centered on the axis, and the first threaded portion can be selectively threadedly connected to the plurality of connecting threaded holes, so that the fixture body can be disposed one by one relative to the plurality of corners of the test piece.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The utility model provides a positioning device, including multiple fixture units, the fixture units include a furniture body and a connecting piece, wherein the furniture body is arranged one by one opposite to multiple corners of the piece to be tested, all the fixture bodies are detachably mounted on the test platform through the connecting piece, and the fixture body has a clamping structure, which can clamp and fix the corners of the piece to be tested on the test platform. Through the above arrangement, the number of fixture units used can be effectively reduced, thereby saving manufacturing costs, and the setting position of the fixture body can be adjusted as needed to ensure that there is no assembly gap between the clamping structure and the piece to be tested, effectively improving the stability of the clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an assembly diagram between the positioning device, the test platform and the test piece provided by the embodiment of the utility model;

[0020] Figure 2 It is a structural schematic diagram of a clamp unit provided in an embodiment of the utility model;

[0021] Figure 3 is a front view of a clamp unit provided by an embodiment of the utility model;

[0022] Figure 4 It is a top view of the clamp unit provided by the embodiment of the utility model.

[0023] In the figure:

[0024] 100, test piece; 200, test platform; 201, threaded hole;

[0025] 1. Clamp unit; 11. Clamp body; 111. Waist-shaped hole; 112. Step connection surface; 1121. Groove; 1122. Avoidance groove; 12. Connector; 121. First threaded portion; 122. First end cap; 123. Gasket; 131. First clamping portion; 132. Second clamping portion; 1321. Clamping block; 14. Adjustment member; 141. Second threaded portion; 142. Second end cap. DETAILED DESCRIPTION

[0026] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0029] The following is a description of the positioning device for clamping and fixing the test piece 100 provided by the present invention in conjunction with the accompanying drawings and specific embodiments. Figure 1 As shown, in this embodiment, the positioning device includes four clamp units 1, which can clamp and fix the quadrilateral PACK box on the test platform 200 to perform a vibration test on the PACK box and obtain the performance parameters of the PACK box under the vibration scenario.

[0030] Specifically, taking one of the fixture units 1 as an example, refer to Figure 2 As shown, the fixture unit 1 includes a fixture body 11 and a connecting piece 12. Four fixture bodies 11 are arranged opposite to the four corners of the PACK box one by one, and all the fixture bodies 11 are detachably mounted on the test platform 200 through the connecting piece 12. In addition, a clamping structure is arranged on the fixture body 11, and the fixture unit 1 clamps and fixes the corners of the PACK box on the test platform through the clamping structure. In this way, the four fixture units clamp the four corners of the PACK box through the clamping structure at the same time, so that the movement of the PACK box can be limited in the horizontal direction, ensuring the installation stability of the PACK box. Compared with the existing positioning device, the number of positioning devices used can be effectively reduced, and the production cost is reduced.

[0031] In addition, after the connector 12 is removed from the fixture body 11, the clamping position of the fixture body 11 can be fine-tuned manually or mechanically to ensure that the clamping structure can fit tightly to the corner of the PACK box. In this way, the assembly gap between the PACK box and the fixture unit 1 can be eliminated, effectively improving the clamping stability of the positioning device, so that the PACK box can be prevented from jumping during the vibration test, thereby ensuring the accuracy of the vibration test results.

[0032] In order to simplify the steps of removing the connecting member 12 from the clamp body, in this embodiment, Figure 1 , Figure 2 As shown, a waist-shaped hole 111 is provided on the upper side of the fixture body 11 in the direction close to or away from the axis of the PACK box; a threaded hole 201 is provided on the test platform 200; and the connecting member 12 includes a first threaded portion 121 and a first end cap portion 122. After the first threaded portion 121 is threadedly connected to the threaded hole 201 through the waist-shaped hole 111, the first end cap portion 122 abuts against the top surface of the fixture body 11, so that the fixture body 11 can be fixedly installed on the test platform 200. When the position of the fixture body 11 needs to be adjusted, it is only necessary to loosen the connecting member 12 and then move the fixture body 11 in the direction close to the corner of the PACK box. When the fixture body 11 is moved to make the clamping structure fit tightly against the corner of the PACK box, the connecting member 12 is tightened to fix the fixture body 11. The adjustment process is simple and easy to operate, and there is no need to set up complex hydraulic pumps, push rods and other mechanisms, thereby simplifying the structure of the fixture unit 1 and reducing the manufacturing cost.

[0033] Furthermore, the test platform 200 is provided with multiple layers of threaded holes 201 in a circumferential direction with the axis as the center. When it is necessary to perform vibration performance tests on PACK boxes with different cross-sectional sizes, the first threaded portion 121 can be selectively threadedly connected to the threaded holes 201, so that the fixture body 11 can still be relatively arranged at the corners of the PACK box one by one, thereby achieving the effect of stably clamping PACK boxes of different sizes on the test platform 200, thereby expanding the scope of application of the positioning device.

[0034] It should be noted that, in other embodiments, the connecting member 12 may also be a buckle provided on the fixture body 11, and a plurality of slots that can be matched and connected with the buckle are provided on the test platform 200, so that the fixture body 11 can be detachably installed on the test platform 200, and the position of the fixture body 11 on the test platform 200 can be adjusted. Therefore, the utility model does not limit the detachable connection between the fixture body 11 and the test platform 200, as long as the setting position of the fixture body 11 on the test platform 200 can be changed quickly and conveniently, it is within the protection scope of the utility model.

[0035] Optionally, in this embodiment, the connector 12 further includes a gasket 123 sandwiched between the first end cap 122 and the clamp body 11, and the cross-sectional area of ​​the gasket 123 is larger than the cross-sectional area of ​​the first end cap 122, so that the pressure of the connector 12 with the first end cap 122 having a larger cross-sectional area can be reduced on the basis of ensuring that the first end cap 122 is closely attached to the clamp body 11. The gasket 123 can be integrally formed and connected to the first end cap 122, or can be detachably connected to the first end cap 122, and the utility model is not limited thereto.

[0036] refer to Figure 2 As shown, in this embodiment, the clamping structure includes a first clamping portion 131 and a second clamping portion 132. The first clamping portion 131 is pressed against the surface of the PACK box away from the test platform 200, and the second clamping portion 132 includes two clamping blocks 1321. Each clamping block 1321 is pressed against the side of the PACK box to clamp the corner of the PACK box together. Through the above arrangement, the clamp body 11 can limit the movement of the PACK box in the horizontal direction and the vertical direction at the same time, thereby further improving the stability of the PACK box during the vibration test, avoiding the possibility of the PACK box jumping, and further ensuring the accuracy of the test results.

[0037] In this embodiment, the clamping block 1321 is a columnar structure and has an arc-shaped clamping surface, which is arranged to fit the side of the PACK box, and the two clamping blocks 1321 in each fixture unit 1 are arranged at intervals, so that the PACK box can be clamped and fixed by the cooperation of the two clamping blocks 1321. In addition, by rotating the PACK box around the axis of the test platform 200, the clamping angle of the PACK box can be fine-tuned, and at this time, the arc-shaped clamping surface of the clamping block 1321 can still be ensured to fit and connect to the side of the PACK box. Compared with the square clamping block, it can prevent the sharp edge from causing damage or scratches to the side of the PACK box, thereby protecting the PACK box.

[0038] In order to improve the clamping stability, the clamp body 11 is provided with a first clamping portion 131 protruding from one end of the PACK box, and the first clamping portion 131 and the stepped connection surface 112 of the clamp body 11 abut against the side of the clamp block 1321 facing away from the PACK box. In this way, when in use, after the two clamp blocks 1321 are used together to clamp the corner of the PACK box, the bottom surface of the first clamping portion 131 can directly abut against the surface of the PACK box, thereby quickly and conveniently completing the clamping and limiting of the corner of the PACK box. At this time, the stepped connection surface 112 can support the clamp block 1321, thereby preventing the clamp block 1321 from being skewed and deformed during the clamping process, and ensuring the verticality between the clamp block 1321 and the first clamping portion 131.

[0039] Furthermore, the stepped connection surface 112 has a groove 1121 , which is arranged around the side of the clamping block 1321 facing away from the PACK box, thereby further improving the stability and reliability of the clamping block 1321 by increasing the contact area between the clamping block 1321 and the stepped connection surface 112 .

[0040] Furthermore, the stepped connection surface 112 is provided with a avoidance groove 1122, and the opening of the avoidance groove 1122 faces the corner of the PACK box, thereby preventing the stepped connection surface 112 from contacting and rubbing with the corner of the PACK box, ensuring the surface integrity of the PACK box and extending the service life.

[0041] Optionally, in this embodiment, the clamp unit 1 further includes a buffer layer (such as a rubber layer) disposed on the arc-shaped clamping surface, so as to provide a certain elasticity and softness during the clamping process, and avoid direct contact with the side of the PACK box to cause damage to the side of the PACK box. Of course, in other embodiments, a buffer layer can also be disposed on the bottom surface of the first clamping portion 131 to avoid the first clamping portion 131 from hard contact with the surface of the PACK box, which causes the surface of the PACK box to be squeezed and damaged.

[0042] Alternatively, if Figure 2 As shown, the fixture unit 1 also includes an adjusting member 14, which is a more conventional locking screw and includes a second threaded portion 141 and a second end cap portion 142; an adjusting hole penetrating the fixture body 11 is provided on the end of the fixture body 11 away from the PACK box, the second threaded portion 141 is threadedly connected to the adjusting hole, and the opposite ends of the second end cap portion 142 are respectively abutted against the test platform 200 and the fixture body 11, so that the height of the fixture body 11 can be changed by screwing the second threaded portion 141, so that the bottom surface of the first clamping portion 131 on the fixture body 11 can be pressed against the surface of the PACK box, and the arc-shaped clamping surface of the clamping block 1321 on the fixture body 11 can be tightly fitted against the side of the PACK box, so as to ensure the clamping and limiting effect of the positioning device on the PACK box.

[0043] In the description of this specification, the description of reference terms such as "some embodiments", "other embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0044] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A positioning device, used for clamping and fixing a polygonal test piece (100) on a test platform (200), characterized in that: The invention comprises a plurality of fixture units (1), wherein the fixture units (1) comprise a fixture body (11) and a connecting piece (12), wherein the fixture body (11) is arranged opposite to a plurality of corners of the test piece (100) one by one, and all the fixture bodies (11) are detachably mounted on the test platform (200) via the connecting piece (12), and the fixture body (11) has a clamping structure, and the clamping structure is configured to clamp and fix the corners of the test piece (100) on the test platform (200).

2. The positioning device according to claim 1, characterized in that: The clamping structure comprises a first clamping portion (131) and a second clamping portion (132), wherein the first clamping portion (131) is pressed against a surface of the test piece (100) away from the test platform (200), and the second clamping portion (132) comprises two clamping blocks (1321), each of the clamping blocks (1321) being pressed against a side edge of the test piece (100) to cooperate with each other to clamp a corner of the test piece (100).

3. The positioning device according to claim 2, characterized in that: The clamping block (1321) is in a columnar structure and has an arc-shaped clamping surface. The arc-shaped clamping surface is arranged to fit the side of the test piece (100), and the two clamping blocks (1321) are arranged at intervals.

4. The positioning device according to claim 3, characterized in that: The first clamping portion (131) is protruding from one end of the clamp body (11) facing the piece to be tested (100), and the stepped connecting surface (112) between the first clamping portion (131) and the clamp body (11) abuts against a side portion of the clamping block (1321) facing away from the piece to be tested (100).

5. The positioning device according to claim 4, characterized in that: The stepped connection surface (112) has a groove (1121), and the groove (1121) is arranged around a portion of the side of the clamping block (1321) facing away from the device to be tested (100).

6. The positioning device according to claim 5, characterized in that: The stepped connection surface (112) further comprises a position-avoiding groove (1122), wherein the opening of the position-avoiding groove (1122) faces the corner of the device to be tested (100).

7. The positioning device according to claim 4, characterized in that: An adjustment hole is provided on one end of the fixture body (11) away from the test piece (100); the fixture unit (1) also includes an adjustment member (14), the adjustment member (14) includes a second threaded portion (141) and a second end cap portion (142), the second threaded portion (141) is threadedly connected to the adjustment hole, and opposite ends of the second end cap portion (142) are respectively abutted against the test platform (200) and the fixture body (11).

8. The positioning device according to any one of claims 1 to 7, characterized in that: The clamp unit (1) further comprises a buffer layer arranged on the clamping structure, wherein the buffer layer is sandwiched between the clamping structure and the test piece (100).

9. The positioning device according to any one of claims 1 to 7, characterized in that: The fixture body (11) is provided with a waist-shaped hole (111) along the axial direction close to or away from the test piece (100); the test platform (200) is provided with a threaded hole (201); the connecting member (12) comprises a first threaded portion (121) and a first end cap portion (122); the first threaded portion (121) is threadedly connected to the threaded hole (201) through the waist-shaped hole (111); and the first end cap portion (122) abuts against the fixture body (11).

10. The positioning device according to claim 9, characterized in that: The test platform (200) is provided with multiple layers of threaded holes (201) circumferentially centered on the axis, and one of the first threaded portions (121) can be threadedly connected to the threaded hole (201), so that the fixture body (11) can be arranged one by one relative to the corners of the test piece (100).

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