A kind of insulator tension test fixture

Abstract

The utility model belongs to tool fixture technical field, concretely is a kind of insulator tension test fixture, including mounting seat, the side surface of mounting seat is provided with containing groove, containing groove is provided with clamping mechanism, clamping mechanism includes fixed disc and rotating disc, radial extension's sliding slot is provided on fixed disc, sliding block is provided in sliding slot, the side of sliding block towards fixed disc center is provided with compression member;The side surface of sliding block close to rotating disc is equipped with protrusion;Rotating disc is provided with arc slot, and arc slot is matched with protrusion;Push rod is provided on the side of rotating disc, and push rod is connected with driving element, and driving element is used to push push rod, make rotating disc rotate in containing groove, and then make sliding block move in sliding slot.The insulator tension test fixture in the utility model, its clamping mechanism includes fixed disc and rotating disc, can realize the uniform clamping of the periphery of insulator, and clamping effect is stable and reliable.

Description

Technical Field

[0001] This utility model relates to the field of tooling and fixture technology, specifically to a fixture for testing the tensile strength of insulators. Background Technology

[0002] An insulator is a critical device used to isolate conductors at different potentials or between a conductor and a grounding component. It has the dual function of withstanding high voltage and mechanical stress. To ensure the reliability and safety of insulators, multiple performance tests must be conducted before they leave the factory. Among these, mechanical load testing is particularly important, mainly including tensile tests, bending tests, and torsion tests, to simulate various mechanical stresses that may be experienced during actual operation.

[0003] A typical composite insulator consists of three parts: a core rod made of glass fiber reinforced plastic, silicone rubber skirts, and metal connecting hardware. Tensile testing is mainly performed on the core rod itself or on a semi-finished product consisting of the core rod and the hardware. During tensile testing, appropriate test fixtures are needed to clamp the two ends of the core rod or the insulator. In the prior art, some clamps used for tensile testing of insulators have unstable clamping performance. Therefore, this application aims to provide a clamp for tensile testing of insulators with stable and reliable clamping performance. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned shortcomings of the prior art and provide a clamp for testing the tensile strength of insulators.

[0005] The technical solution of this utility model is: a clamp for testing the tensile strength of an insulator, including a mounting base, a receiving groove provided on one side surface of the mounting base, a clamping mechanism provided in the receiving groove, the clamping mechanism including a fixed plate and a rotating plate, the fixed plate being fixedly connected to the mounting base; the rotating plate being rotatably mounted in the receiving groove; a radially extending sliding groove provided on the fixed plate, a sliding block provided in the sliding groove, a pressing member provided on the side of the sliding block facing the center of the fixed plate; a protrusion provided on the side surface of the sliding block near the rotating plate, and the protrusion extending beyond the corresponding side of the fixed plate; an arc-shaped groove provided on the rotating plate, the arc-shaped groove cooperating with the protrusion; a push rod provided on one side of the rotating plate, the push rod being connected to a driving member, the driving member being used to push the push rod, causing the rotating plate to rotate in the receiving groove, when the rotating plate rotates, it will drive the protrusion to move, thereby causing the sliding block to move in the sliding groove.

[0006] Furthermore, both the fixed disk and the rotating disk are annular, and their inner and outer diameters are the same.

[0007] Furthermore, there are two fixed disks and one rotating disk, with the rotating disk positioned between the two fixed disks. The rotating disk...

[0008] Furthermore, two fixed disks are symmetrically arranged on both sides of the rotating disk, with the side of each fixed disk having a groove close to the rotating disk. This ensures that the protrusions on the sliding blocks engage with the corresponding arc-shaped grooves on the rotating disk, allowing the rotating disk to drive the sliding blocks on the two fixed disks to move synchronously. Let the height of the protrusion be the distance from its tip to the surface of the corresponding fixed disk. Then, the thickness of the rotating disk is greater than the sum of the heights of any pair of corresponding protrusions, meaning the two protrusions share a single arc-shaped groove. Of course, the positions of the grooves on the two fixed disks can be staggered, and the number of arc-shaped grooves on the rotating disk is the sum of the number of grooves on the two fixed disks, ensuring that the protrusion of each sliding block on both fixed disks can individually engage with an arc-shaped groove.

[0009] Furthermore, the receiving groove of the mounting base is circular, with the same diameter as the outer diameter of the fixing plate.

[0010] Furthermore, the mounting base is also provided with locking screw holes for locking the fixed plate, and the side of the fixed plate is provided with fixing screw holes; the locking screw holes, locking screws and fixing screw holes cooperate to lock the fixed plate in the receiving groove, preventing the fixed plate from rotating in the receiving groove.

[0011] Furthermore, a drive groove for mounting the drive component is provided on one side of the mounting base, and the drive groove is connected to the receiving groove; the push rod on the rotating disk after installation is located in the drive groove.

[0012] Furthermore, the mounting base is provided with mounting holes for connecting to a tensile testing mechanism.

[0013] Furthermore, the driving component can be a pneumatic cylinder, hydraulic cylinder, or electric cylinder; of course, the driving component can also be a screw, with a handle at one end and the other end set in the driving groove and connected to the push rod. By rotating the handle, the position of the screw end can be changed, thereby driving the push rod to move.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: The clamping mechanism of the insulator tensile test fixture of this utility model includes a fixed disk and a rotating disk, which can achieve uniform clamping of both ends of the insulator product, and the clamping effect is stable and reliable. Attached Figure Description

[0015] Figure 1 This is a perspective view of Embodiment 1 of the present utility model;

[0016] Figure 2 This is an exploded view of Embodiment 1 of this utility model;

[0017] Figure 3 This is a three-dimensional schematic diagram of the mounting base in Embodiment 1 of this utility model;

[0018] Figure 4 This is a cross-sectional schematic diagram of the mounting base in Embodiment 1 of this utility model;

[0019] Figure 5 This is a side view of the clamping mechanism in Embodiment 1 of this utility model;

[0020] Figure 6 This is an exploded view of the fixed disk and the rotating disk in Embodiment 1 of this utility model;

[0021] In the diagram: 1. Mounting base; 11. Receiving groove; 12. Locking screw hole; 13. Drive groove; 14. Mounting hole; 2. Fixed plate; 21. Slide groove; 22. Sliding block; 23. Protrusion; 24. Clamping element; 25. Fixed screw hole; 3. Rotary plate; 31. Arc groove; 32. Push rod; 4. Drive element. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to specific embodiments. Methods or functional components not specifically described in the embodiments are all prior art. Unless otherwise defined, all technical terms and scientific terms used herein have the same meaning as commonly understood by those skilled in the art. Example

[0023] like Figures 1-6 As shown, this embodiment is a fixture for testing the tensile strength of an insulator, including a mounting base 1. A receiving groove 11 is provided on one side surface of the mounting base 1. A clamping mechanism is provided in the receiving groove 11. The clamping mechanism includes a fixed disk 2 and a rotating disk 3. The fixed disk 2 is fixedly connected to the mounting base 1; the rotating disk 3 is rotatably mounted in the receiving groove 11; a plurality of radially extending sliding grooves 21 are provided on the fixed disk 2, and sliding blocks 22 are provided in the sliding grooves 21, with the sliding blocks 22 facing the center of the fixed disk 2. A clamping element 24 is provided; a protrusion 23 is provided on the side surface of the sliding block 22 near the rotating disk 3; and the protrusion 23 extends beyond the corresponding side of the fixed disk 2; an arc-shaped groove 31 is provided on the rotating disk 3, and the arc-shaped groove 31 cooperates with the protrusion 23; a push rod 32 is provided on one side of the rotating disk 3, and the push rod 32 is connected to the driving element 4. The driving element 4 is used to push the push rod 32 to make the rotating disk 3 rotate in the receiving groove 11. When the rotating disk 3 rotates, it will drive the protrusion to move, thereby causing the sliding block 22 to move in the sliding groove 21.

[0024] In this embodiment, both the fixed disk 2 and the rotating disk 3 are annular with a through hole in the center; and their inner and outer diameters are the same. There are two fixed disks 2 and one rotating disk 3. The two fixed disks 2 are symmetrically arranged on both sides of the rotating disk 3, and the side of each fixed disk 2 with a sliding groove 21 is close to the rotating disk 3, so that the protrusions 23 on the sliding blocks 22 engage with the corresponding arc-shaped grooves 31 on the rotating disk 3, causing the rotating disk 3 to drive the sliding blocks 22 on the two fixed disks 2 to move synchronously. Let the height of the protrusion 23 be the distance from the top of the protrusion 23 to the surface of the corresponding fixed disk 2; then the thickness of the rotating disk 3 is greater than the sum of the heights of any pair of corresponding protrusions 23.

[0025] In this embodiment, the receiving groove 11 of the mounting base 1 is circular, with a diameter identical to the outer diameter of the fixed disk 2. The mounting base 1 is provided with locking screw holes 12 for locking the fixed disk 2, and the side of the fixed disk 2 is provided with fixing screw holes 25. The fixed disk 2 can be locked in the receiving groove 11 by the cooperation of the locking screw holes 12, locking screws, and fixing screw holes 25, preventing the fixed disk 2 from rotating within the receiving groove 11. A driving groove 13 for mounting the driving component 4 is provided on one side of the mounting base 1, and the driving groove 13 is connected to the receiving groove 11. The push rod 32 on the rotated disk 3 after installation is located in the driving groove 13. The mounting base 1 is also provided with mounting holes 14 for connecting to a tensile testing mechanism.

[0026] In this embodiment, the driving component 4 is a pneumatic cylinder, hydraulic cylinder, or electric cylinder; of course, the driving component 4 can also be a screw. One end of the screw is provided with a handle, and the other end is provided in the driving groove 13 and connected to the push rod 32. By rotating the handle, the position of the end of the screw can be changed, thereby driving the push rod 32 to move.

[0027] The method of using the test fixture in this embodiment is as follows: The test fixture can first be fixed to the corresponding position of the tensile testing machine through the mounting hole 14. Then, both ends of the insulator (or core rod) are inserted into the through hole in the middle of the fixed disk 2 and the rotating disk 3. The drive component 4 is controlled to work, thereby pushing the push rod 32 to rotate the rotating disk 3. When the rotating disk 3 moves in one direction ( Figure 1 When the rotating disk 3 rotates counterclockwise, it can drive all the sliding blocks 22 to move towards the center, so that the clamping parts 24 can simultaneously clamp the end of the insulator (or core rod). Conversely, when the rotating disk 3 rotates in the other direction, the insulator can be released.

[0028] The above are only some embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various combinations and modifications of the aforementioned technical features. Any improvements, modifications, equivalent substitutions, or applications of the structure or method of the present utility model to other fields to achieve the same effect without departing from the spirit and scope of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A clamp for testing the tensile force of an insulator, comprising a mounting base, characterized in that: A receiving groove is provided on one side surface of the mounting base, and a clamping mechanism is provided in the receiving groove. The clamping mechanism includes a fixed plate and a rotating plate. The fixed plate is fixedly connected to the mounting base. The rotating plate is rotatably mounted in the receiving groove. A radially extending slide groove is provided on the fixed plate, and a sliding block is provided in the slide groove. A clamping element is provided on the side of the sliding block facing the center of the fixed plate. A protrusion is provided on the side surface of the sliding block near the rotating plate. An arc-shaped groove is provided on the rotating plate, and the arc-shaped groove cooperates with the protrusion. A push rod is provided on one side of the rotating plate. The push rod is connected to a driving element. The driving element is used to push the push rod to make the rotating plate rotate in the receiving groove. When the rotating plate rotates, it will drive the protrusion to move, thereby causing the sliding block to move in the slide groove.

2. The insulator tensile force testing fixture according to claim 1, characterized in that: Both the fixed disk and the rotating disk are annular, and their inner and outer diameters are the same.

3. The insulator tensile force testing fixture according to claim 2, characterized in that: There are two fixed disks and one rotating disk, with the rotating disk positioned between the two fixed disks.

4. The insulator tensile force testing fixture according to claim 3, characterized in that: Two fixed disks are symmetrically arranged on both sides of the rotating disk, and the side of the fixed disk with the sliding groove is close to the rotating disk, so that the protrusions on the sliding block are matched with the corresponding arc grooves on the rotating disk, so that the rotating disk drives the sliding blocks on the two fixed disks to move synchronously.

5. The insulator tensile force testing fixture according to claim 4, characterized in that: Let the height of the protrusion be the distance from the top of the protrusion to the surface of the corresponding fixed disk. Then the thickness of the rotating disk is greater than the sum of the heights of any pair of corresponding protrusions; that is, so that the two corresponding protrusions share a single arc groove.

6. The insulator tensile force testing fixture according to claim 2, characterized in that: The mounting base has a circular receiving groove with the same diameter as the outer diameter of the fixing plate.

7. The insulator tensile force testing fixture according to claim 2, characterized in that: The mounting base is also provided with a locking screw hole for locking the fixed plate. The locking screw hole cooperates with the locking screw to lock the fixed plate in the receiving groove and prevent the fixed plate from rotating in the receiving groove.

8. The insulator tensile force testing fixture according to claim 2, characterized in that: The mounting base has a drive groove on one side for mounting the drive component, and the drive groove is connected to the receiving groove; the push rod on the rotating disk after installation is located in the drive groove.

9. The insulator tensile force testing fixture according to claim 2, characterized in that: The mounting base is provided with mounting holes for connecting to a tensile testing mechanism.

10. The insulator tensile force testing fixture according to claim 1, characterized in that: The driving component can be a pneumatic cylinder, hydraulic cylinder, or electric cylinder, or the driving component can be a screw, which is rotated to push the push rod.

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