Testing device for testing torsion resistance and bending resistance of insulator
By designing anti-torsion and anti-bending test components, the problem that existing devices cannot fully test the performance of composite suspension insulators is solved, and efficient and accurate performance evaluation is achieved, which is suitable for insulators of various specifications.
Patent Information
- Application Number
- CN202510979615.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-16
- Publication Date
- 2025-09-19
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing testing devices are unable to conduct comprehensive and accurate testing of the torsional and bending resistance of composite suspension insulators. They are complicated to operate and have a limited testing range.
A test device including a torsion test component and a bending test component was designed. Torque was applied using a torque wrench and a rotating column. The torsion performance was evaluated using an upper and lower adjustment rod, a hinged plate, and a hinged frame. The deformation test under bending was performed using a loading plate and an extension arm.
It realizes comprehensive testing of the torsional and bending properties of composite suspension insulators, improves test efficiency and accuracy, is applicable to insulators of different specifications and models, and is easy to operate and precisely controlled.
Smart Images
Figure CN120668488A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of insulator performance testing, in particular to a testing device for testing the torsional and bending resistance performance of an insulator. Background Art
[0002] Insulators play a vital role in power systems, and their torsional and flexural performance directly impacts the safe and stable operation of these systems. In the field of insulator performance testing technology, testing the torsional and flexural performance of composite suspension insulators is crucial. However, existing testing devices often suffer from complex operation, inaccurate testing, or limited testing range, failing to meet the requirements for comprehensive and accurate performance testing of composite suspension insulators. Therefore, it is necessary to develop a new testing device to address these issues and enable accurate and efficient testing of the torsional and flexural performance of composite suspension insulators. Summary of the Invention
[0003] In view of the problems in the prior art, the present invention provides a testing device for testing the torsional and bending resistance performance of an insulator.
[0004] The technical solution adopted by the present invention to solve the technical problem is: a testing device for testing the torsional and bending resistance of insulators, comprising: Fixed base to provide stable support for the entire device; The lower clamp installed on the fixed base is used to fix the composite suspension insulator; The loading plate is horizontally arranged just above the fixed base, and the plate walls on both sides of the loading plate are provided with fixed sleeves for pulling the loading plate to flip; The bending test assembly includes an upper column, a lower column, an upper adjustment rod and a lower adjustment rod, wherein the upper column and the lower column are fixedly mounted on the bottom of the loading plate and the top of the fixed base respectively, and the upper adjustment rod and the lower adjustment rod are slidably plugged into the bottom of the upper column and the top of the lower column respectively, and the adjacent ends of the upper adjustment rod and the lower adjustment rod are respectively fixed with a hinge plate and a hinge frame, the hinge plate and the hinge frame are hinged by a pin shaft, and a plurality of limiting convex balls are embedded on the outer walls of both sides of the hinge plate, and corresponding limiting ball grooves are opened on the inner wall of the hinge frame corresponding to the limiting convex balls; The anti-torsion test assembly includes a torque wrench and a rotating column. The torque wrench is arranged above the loading plate. The rotating column is rotated and plugged into the top of the loading plate. A groove is provided at the bottom of the rotating column for connecting with the flat connection end of the composite suspension insulator.
[0005] Specifically, one end of the upper adjustment rod extending into the interior of the upper column and one end of the lower adjustment rod extending into the interior of the lower column are both connected to tension springs, and the other ends of the tension springs are connected to the adjacent loading plate or fixed base.
[0006] Specifically, the lower clamp is a three-jaw chuck.
[0007] Specifically, there are at least 18 limiting convex balls on the outer wall of one side of the hinge plate, and the spacing between adjacent limiting convex balls on the same side is the same, and the limiting convex balls on both sides of the same hinge plate are staggered.
[0008] Specifically, the outer rod walls of the upper adjusting rod and the lower adjusting rod are both provided with limiting rods, and the inner walls of the upper column and the lower column are both provided with matching limiting grooves corresponding to the limiting rods, and the limiting rods are slidably inserted into the limiting grooves.
[0009] Specifically, at least one fixing sleeve is provided on the same side of the loading plate, and an extension arm is slidably inserted into the interior of the fixing sleeve.
[0010] Specifically, a matching slot is provided at the top of the rotating column corresponding to the plug-in end of the torque wrench.
[0011] Specifically, the top of the rotating column passes through the loading plate and is fixedly sleeved with a limiting hoop for limiting the position of the rotating column.
[0012] Beneficial effects of the present invention: The present invention achieves comprehensive testing of the torsion and bending resistance of composite suspension insulators through the design of a torsion test assembly and a bending test assembly. The torsion test assembly, using a torque wrench and a rotating column, directly applies torque to the composite suspension insulator to evaluate its torsional performance. The bending test assembly, using an upper adjustment rod, a lower adjustment rod, a hinged plate, and a hinged frame, measures the degree of deformation of the composite suspension insulator in a bent state, thereby evaluating its bending resistance.
[0013] The test device of the present invention has a compact structure, is easy to operate, and can greatly improve test efficiency. At the same time, the device has wide applicability and can be used for performance testing of composite suspension insulators of different specifications and models.
[0014] The present invention also achieves precise control and adjustment of the test process by providing components such as a tension spring, a limiting ball, and a limiting ball groove. In addition, the design of the extension arm and fixed sleeve makes flipping the loading plate more convenient and labor-saving, further improving test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The present invention will be further described below with reference to the accompanying drawings and examples.
[0016] Figure 1 A schematic diagram of the structure of a testing device for testing the torsional and bending performance of an insulator provided by the present invention Figure 1 ; Figure 2A schematic diagram of the structure of a testing device for testing the torsional and bending performance of an insulator provided by the present invention Figure 2 ; Figure 3 This is a disassembled diagram of a fixed base, a bending test assembly, and a loading plate in a test device for testing the torsional and bending performance of an insulator provided by the present invention; Figure 4 This is a disassembled diagram of the anti-torsion test component in a test device for testing the torsional and bending resistance of insulators provided by the present invention.
[0017] In the figure: 1. Fixed base; 2. Bending test assembly; 21. Upper column; 22. Lower column; 23. Tension spring; 24. Upper adjusting rod; 25. Lower adjusting rod; 26. Hinge plate; 27. Hinge frame; 28. Limiting ball; 29. Limiting ball groove; 210. Limiting rod; 211. Limiting groove; 3. Loading plate; 31. Fixed sleeve; 32. Extension arm; 4. Torsion test assembly; 41. Torque wrench; 42. Rotating column; 43. Limiting hoop; 44. Slot; 45. Groove; 5. Lower clamp. DETAILED DESCRIPTION
[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.
[0019] like Figures 1-4 As shown, the present invention provides the following technical solutions: Example 1: Testing the Torsion Resistance of Insulators It includes: a fixed base 1, which provides stable support for the entire device; The lower clamp 5 mounted on the fixed base 1 is used to fix the composite suspension insulator; The loading plate 3 is horizontally arranged directly above the fixed base 1 and is connected to the fixed base 1 through the bending test assembly 2; The anti-torsion test assembly 4 includes a torque wrench 41 and a rotating column 42. The torque wrench 41 is set above the loading plate 3. The rotating column 42 is rotated and plugged into the top of the loading plate 3. A groove 45 is provided at the bottom of the rotating column 42 for connecting to the flat connecting end of the composite suspension insulator.
[0020] The lower clamp 5 is a three-jaw chuck that can provide a stable clamping force for the end of the composite suspension insulator.
[0021] A matching slot 44 is provided at the top of the rotating post 42 corresponding to the plug-in end of the torque wrench 41 , so as to facilitate connection between the plug-in end of the torque wrench 41 and the rotating post 42 .
[0022] The top of the rotating column 42 passes through the loading plate 3 and is fixedly sleeved with a limiting hoop 43 for limiting the rotating column 42. The setting of the limiting hoop 43 can effectively improve the stability of the connection between the rotating column 42 and the loading plate 3, and prevent the rotating column 42 from falling off.
[0023] When testing the torsional performance of composite suspension insulators: First, insert the flat end of the composite suspension insulator into the groove 45 on the rotating column 42. Since the depth of the groove 45 is not shorter than the length of the flat end of the composite suspension insulator, the flat end of the composite suspension insulator can be fully inserted into the groove 45. At this time, the bending test assembly 2 is in a straight state. When the composite suspension insulator is located above the three-jaw chuck, the other end of the composite suspension insulator can be positioned between the multiple jaws on the three-jaw chuck, and the jaws of the three-jaw chuck are driven to clamp it. The three-jaw chuck consists of a chuck body, movable jaws, and a jaw drive mechanism. Below the three jaw guides on the three-jaw chuck, there are threads that mesh with the flat threads on the back of the disc bevel gear. When the toggle block rotates to rotate the small bevel gear, the disc gear rotates, and the flat threads on the back simultaneously drive the three jaws toward or away from the center to clamp workpieces of different diameters. At this time, the composite suspension insulator is firmly clamped by the device. Then, the torque of the torque wrench 41 is adjusted according to the anti-torsion range to be tested. After the adjustment is completed, the connecting end of the torque wrench 41 is inserted into the slot 44 provided on the rotating column 42, so that the torque wrench 41 is connected to the rotating column 42; Finally, twisting the torque wrench 41 causes the rotating post 42 to rotate synchronously. The rotation of the rotating post 42 causes the flat end of the composite suspension insulator to twist, thereby testing the degree of deformation of the composite suspension insulator under the same torque. Using the torque wrench to directly apply torque can assess the torsional resistance of the composite suspension insulator.
[0024] Example 2: Testing the bending performance of insulators include: Fixed base 1 provides stable support for the entire device; The lower clamp 5 mounted on the fixed base 1 is used to fix the composite suspension insulator; The loading plate 3 is horizontally arranged just above the fixed base 1. The plate walls on both sides of the loading plate 3 are provided with fixed sleeves 31 for pulling the loading plate 3 to flip; At least one fixed sleeve 31 is provided on the same side of the loading plate 3, and an extension arm 32 is slidably inserted into the interior of the fixed sleeve 31. The provision of the extension arm 32 can effectively extend the force arm when the loading plate 3 is flipped, making the flipping of the loading plate 3 more convenient and labor-saving; The bending test assembly 2 includes an upper column 21, a lower column 22, an upper adjustment rod 24 and a lower adjustment rod 25. The upper column 21 and the lower column 22 are fixedly mounted on the bottom of the loading plate 3 and the top of the fixed base 1, respectively. The upper adjustment rod 24 and the lower adjustment rod 25 are slidably inserted into the bottom of the upper column 21 and the top of the lower column 22, respectively. The adjacent ends of the upper adjustment rod 24 and the lower adjustment rod 25 are respectively fixed with a hinge plate 26 and a hinge frame 27. The hinge plate 26 and the hinge frame 27 are hinged by a pin shaft, and a plurality of limiting convex balls 28 are embedded on the outer walls on both sides of the hinge plate 26. The inner wall of the hinge frame 27 is provided with a corresponding limiting ball groove 29 corresponding to the limiting convex balls 28. The anti-torsion test assembly 4 includes a torque wrench 41 and a rotating column 42. The torque wrench 41 is set above the loading plate 3. The rotating column 42 is rotated and plugged into the top of the loading plate 3. A groove 45 is provided at the bottom of the rotating column 42 for connecting to the flat connecting end of the composite suspension insulator.
[0025] One end of the upper adjusting rod 24 extending to the interior of the upper column 21 and one end of the lower adjusting rod 25 extending to the interior of the lower column 22 are both connected to a tension spring 23, and the other end of the tension spring 23 is connected to the adjacent loading plate 3 or the fixed base 1. The tension of the fixedly connected tension spring 23 can pull the adjusting rod to automatically reset inside the column.
[0026] There are at least 18 limiting protrusions 28 on the outer wall of one side of the hinge plate 26, and 18 in this example. The spacing between each limiting protrusion 28 is the same, and the spacing between adjacent limiting protrusions 28 on the same side is the same. The limiting protrusions 28 on both sides of the same hinge plate 26 are staggered with each other, so that the hinge plate 26 can be limited at multiple angles during the flipping process.
[0027] A limiting rod 210 is provided on the outer rod wall of the upper adjusting rod 24 and the lower adjusting rod 25, and a corresponding limiting groove 211 is opened on the inner wall of the upper column 21 and the lower column 22 corresponding to the limiting rod 210, and the limiting rod 210 is slidably inserted into the limiting groove 211. The setting of the limiting rod 210 and the limiting groove 211 can effectively prevent the adjusting rod from rotating inside the column.
[0028] The top of the rotating column 42 passes through the loading plate 3 and is fixedly sleeved with a limiting hoop 43 for limiting the rotating column 42. The setting of the limiting hoop 43 can effectively improve the stability of the connection between the rotating column 42 and the loading plate 3, and prevent the rotating column 42 from falling off.
[0029] The lower clamp 5 is a three-jaw chuck that can provide a stable clamping force for the end of the composite suspension insulator.
[0030] When testing the bending performance of composite suspension insulators: First, similarly, as in the first embodiment, the composite suspension insulator is clamped. During the clamping process, the distance between the loading plate 3 and the fixed base 1 can be adjusted according to the length of the composite suspension insulator to be tested. When adjusting the distance, the adjustment rod can slide along the column. During the sliding and retracting process, the adjustment rod overcomes the tension of the tension spring 23 and drives the tension spring 23 to stretch, thereby achieving adjustment of the distance. Then, the extension arm 32 on the loading plate 3 is stretched outward along the fixed sleeve 31 so that the extension arm 32 and the fixed sleeve 31 form a longer force arm, so as to facilitate the flipping of the loading plate 3; Finally, the force arm formed by the extension arm 32 and the fixed sleeve 31 drives the loading plate 3 to flip downward. Since the composite suspension insulator and the bending test assembly 2 are located in the same column but different rows, the composite suspension insulator and the bending test assembly 2 can bend synchronously under the flipping of the loading plate 3, and the upper adjustment rod 24 and the lower adjustment rod 25 inside the bending test assembly 2 can be bent with the pin shaft hinged between the hinge plate 26 and the hinge frame 27 as the axis. During the bending process, the limiting protrusion 28 on the hinge plate 26 will be separated from the limiting ball groove 29 and re-embedded, thereby avoiding the inability to preserve the bending angle between the hinge plate 26 and the hinge frame 27 after the test is completed.
[0031] Among them, the limiting protrusion 28 will produce a ticking sound during the process of separation from the limiting ball groove 29 and re-embedding. Each time the ticking sound is produced during the embedding, a 10° bend is generated between the surface hinge plate 26 and the hinge frame 27. The bending resistance of the composite suspension insulator can be evaluated based on the degree of deformation of the bending.
[0032] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A testing device for testing the torsional and bending performance of an insulator, characterized in that: include: A fixed base (1) and a lower clamp (5) mounted on the fixed base (1); A loading plate (3) is horizontally arranged directly above the fixed base (1), and fixed sleeves (31) are provided on the plate walls on both sides of the loading plate (3); A bending test assembly (2) comprises an upper column (21), a lower column (22), an upper adjustment rod (24) and a lower adjustment rod (25), wherein the upper column (21) and the lower column (22) are fixedly mounted on the bottom of the loading plate (3) and the top of the fixed base (1), respectively, and the upper adjustment rod (24) and the lower adjustment rod (25) are slidably plugged into the bottom of the upper column (21) and the top of the lower column (22), respectively, and adjacent ends of the upper adjustment rod (24) and the lower adjustment rod (25) are fixed with a hinge plate (26) and a hinge frame (27), respectively, and the hinge plate (26) and the hinge frame (27) are hinged by a pin shaft, and a plurality of limiting convex balls (28) are embedded on the outer walls of both sides of the hinge plate (26), and a corresponding limiting ball groove (29) is provided on the inner wall of the hinge frame (27) corresponding to the limiting convex balls (28); The anti-torsion test assembly (4) comprises a torque wrench (41) and a rotating column (42), wherein the torque wrench (41) is arranged above the loading plate (3), the rotating column (42) is rotatably plugged into the top of the loading plate (3), and a groove (45) is provided at the bottom of the rotating column (42) for connecting to the flat connection end of the composite suspension insulator.
2. The testing device for testing the torsional and bending resistance of an insulator according to claim 1, characterized in that: One end of the upper adjustment rod (24) extending into the interior of the upper column (21) and one end of the lower adjustment rod (25) extending into the interior of the lower column (22) are both connected to a tension spring (23), and the other end of the tension spring (23) is connected to an adjacent loading plate (3) or a fixed base (1).
3. The testing device for testing the torsional and bending properties of an insulator according to claim 1, characterized in that: The lower clamp (5) is a three-jaw chuck.
4. The testing device for testing the torsional and bending resistance of an insulator according to claim 1, characterized in that: There are at least 18 limiting convex balls (28) on the outer wall of one side of the hinge plate (26), and the spacing between adjacent limiting convex balls (28) on the same side is the same. The limiting convex balls (28) on both sides of the same hinge plate (26) are staggered.
5. The testing device for testing the torsional and bending resistance of an insulator according to claim 1, characterized in that: A limiting rod (210) is provided on the outer rod wall of the upper adjusting rod (24) and the lower adjusting rod (25), and a matching limiting groove (211) is provided on the inner wall of the upper column (21) and the lower column (22) corresponding to the limiting rod (210), and the limiting rod (210) is slidably inserted into the limiting groove (211).
6. The testing device for testing the torsional and bending resistance of an insulator according to claim 1, characterized in that: At least one fixed sleeve (31) is provided on the same side of the loading plate (3), and an extension arm (32) is slidably inserted into the interior of the fixed sleeve (31).
7. The testing device for testing the torsional and bending resistance of an insulator according to claim 1, characterized in that: A matching slot (44) is provided at the top of the rotating column (42) corresponding to the plug-in end of the torque wrench (41).
8. The testing device for testing the torsional and bending resistance of an insulator according to claim 1, characterized in that: The top of the rotating column (42) passes through the loading plate (3) and is fixedly sleeved on a limiting hoop (43).