Bending torsion test device of disconnector
By designing a bending and torsion testing device, the torque and bending performance of the release device is simulated using a torque end and a fixed end. This solves the problem of insufficient torque and radial tensile force testing of the release device in the existing technology, and improves its reliability in practical applications.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-30
- Publication Date
- 2026-05-19
AI Technical Summary
The lack of effective means for testing the torque and radial tension of the release device in the existing technology leads to insufficient reliability when used in the field.
A bending and torsion testing device was designed, comprising a torque end and a fixed end arranged opposite to each other. Combined with a rotation drive mechanism and a bending force testing unit, it can simulate the performance of the release device under torque and bending, and measure relevant parameters through torque sensors and tensile and compressive force sensors.
The reliability testing of the release mechanism under torsion and bending conditions has been improved, ensuring the safety and reliability of the release mechanism in practical applications.
Smart Images
Figure CN224262790U_ABST
Abstract
Description
Technical Field
[0001] A bending and torsion testing device for a release mechanism belongs to the field of release mechanism testing technology. Background Technology
[0002] As an accessory to surge arresters, disconnectors are generally used in series with surge arresters. When a surge arrester deteriorates and is about to be damaged or fail, causing a short circuit, power outage, or explosion that endangers electrical equipment and personal safety, the disconnector will quickly activate and disconnect the faulty surge arrester from the power transmission system. Therefore, the reliability of the disconnector is particularly important.
[0003] In existing technologies, besides electrical tests (such as ampere-second characteristic tests) of the disconnector, mechanical performance tests are also crucial. Existing technologies primarily focus on mechanical performance tests, mainly designing tensile tests, as exemplified by the technical solution described in Chinese Utility Model Patent Application No. 201420852039.1, filed on December 27, 2014, entitled "General Tooling for Tensile Testing of Disconnectors".
[0004] However, in actual use, it has been found that the release device is often subjected to torque and radial tension when used in the field. Therefore, designing a technical solution that can test the torque and radial tension of the release device has become an urgent problem to be solved in this field. Utility Model Content
[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a torsion test device for a release device that realizes the torsion test of the release device through the relative arrangement of the torsion end and the fixed end, and at the same time, the bending test of the bending force test unit helps to understand the bending and torsion characteristics of the release device and improves the reliability during use.
[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: the bending and torsion testing device of the release device includes a test bench, and two joints for docking with the release device are provided on the surface of the test bench. The device is characterized in that: a fixed seat and a movable seat are provided on the surface of the test bench, and the two joints include a torque end installed on the surface of the fixed seat and a fixed end installed on the movable seat. A rotation drive mechanism for driving the torque end to rotate is also provided on the fixed seat. A lifting bending force testing unit is also provided on the surface of the test bench, and the bending force testing unit faces upward directly towards the release device.
[0007] Preferably, the bending force test unit includes a linear output mechanism installed at the bottom of the test bench. The moving end of the linear output mechanism extends upward through the test bench and onto the surface of the test bench. A bending head is fixed to the end of the moving end of the linear output mechanism.
[0008] Preferably, a tension / compression sensor is also installed between the moving end of the linear output mechanism and the bending head.
[0009] Preferably, a guide rail is provided on the surface of the test bench, the movable seat is slidably disposed on the surface of the test bench via the guide rail, and the fixed seat is fixed relative to the movable seat at the end of the test bench.
[0010] Preferably, the driving mechanism is a drive motor mounted on the surface of the fixed base, and the motor shaft of the drive motor passes through the fixed base and is fixed to the torque end.
[0011] Preferably, the torque end includes a torque sleeve that is coaxially fixed to the motor shaft of the drive motor, and a connecting flange is fixed to the end of the torque sleeve. The torque head is threadedly connected to the connecting flange.
[0012] Preferably, a reverse fastening nut is also fitted outside the torque head.
[0013] Preferably, a torque sensor is fixed on the surface of the movable seat, and a fixed end is fixed to the end of the torque sensor.
[0014] Preferably, the fixed end includes a mounting base fixed to the end of the torque sensor, and a fixed head is detachably provided at the end of the mounting base, the end of the fixed head being a bayonet that engages with the release device.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] The torsion test device for the release device of this application enables torsion testing of the release device through the torsion end and the fixed end set opposite to each other. At the same time, the bending test through the bending force test unit helps to understand the bending and torsion characteristics of the release device and improves its reliability during use.
[0017] A protective cover is installed on the surface of the test bench. The front and rear ends of the cover are slidably connected to the corresponding side rails, so that the cover can slide along the length of the cabinet. During the test, the release device is placed inside it to improve the safety of the test.
[0018] By reverse tightening the nut, the torque head is locked in the reverse direction, so as to adjust the angle of the release device and make the bayonet at the end of the release device and the fixed head smoothly connect. Attached Figure Description
[0019] Figure 1 This is an isometric view of the bending and torsion testing device for the release mechanism.
[0020] Figure 2 This is a front view of the bending and torsion test apparatus for the release device.
[0021] Figure 3 for Figure 2 The diagram omits the front hood, protective cover, and rear hood.
[0022] Figure 4 for Figure 3 Sectional view along the AA direction.
[0023] Figure 5 for Figure 4 Partial sectional view from the middle BB direction.
[0024] The components include: 1. Fixed cover; 2. Operating area; 3. Protective cover; 4. Guide rail; 5. Moving cover; 6. Test bench; 7. Side rail; 8. Cabinet; 9. Torque end; 10. Fixed end; 11. Drive motor; 12. Fixed seat; 13. Bearing sleeve; 14. Torque sleeve; 15. Torque head; 16. Bending head; 17. Tension / compression sensor; 18. Fixed head; 19. Mounting seat; 20. Torque sensor; 21. Moving seat; 22. Linear motor; 23. Connecting flange; 24. Reverse fastening nut; 25. Positioning pin. Detailed Implementation
[0025] Figures 1-5 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-5 The present invention will be further described below.
[0026] like Figures 1-2 As shown, a bending and torsion testing device for a release device includes a cabinet 8, the surface of which is a test bench 6. A fixed cover 1 is provided at one end of the test bench 6, and a torque end 9 is led out from the side of the fixed cover 1. An operating area 2 is provided on the surface of the fixed cover 1, and multiple buttons are provided in the operating area 2 for controlling the rotation or stopping of the torque end 9.
[0027] Two guide rails 4 are arranged side by side on the surface of the test bench 6, along the length of the cabinet 8. The two guide rails 4 are spaced apart from the fixed cover 1 at one end near the fixed cover 1, and the other ends of the two guide rails 4 extend to the edge of the test bench 6. A side rail 7 is respectively provided on the upper end of the front and rear end faces of the test bench 6. A protective cover 3 is mounted on the surface of the test bench 6. The front and rear ends of the protective cover 3 are slidably connected to the corresponding side rails 7, so that the protective cover 3 can slide along the length of the cabinet 8. During the test, the release device (not shown in the figure) is placed inside it to improve the safety of the test.
[0028] A movable cover 5 is slidably disposed on the surface of the two guide rails 4. A fixed end 10 is disposed on the end face of the movable cover 5 facing the fixed cover 1. The fixed end 10 is disposed opposite to the torque end 9, and their axes are collinear. One end of the release device (not shown in the figure) is fixed at the torque end 9. After the fixed end 10 moves to the release device, it is engaged with the nut at the end of the release device. Then the torque end 9 rotates to provide test torque to realize the torque test of the release device.
[0029] A bending head 16 can be raised and lowered on the surface of the test bench 6. After the release device is fixed, the bending head 16 faces upward. When the fixed end 10 is separated from the release device, the bending head 16 rises and applies radial pressure to the release device, causing the release device to bend. The pressure applied to the release device is measured by the tension and pressure sensor 17 at the bottom of the bending head 16.
[0030] Combination Figures 3-4 A movable base 21 is provided inside the movable cover 5. The movable base 21 is slidably connected to two guide rails 4 via a slider on the bottom of its base plate. A bracket is erected on the upper surface of the movable base 21. A torque sensor 20 is fixed at the end of the bracket facing the fixed cover 1. The body of the torque sensor 20 is fixed to the bracket on the surface of the movable base 21. The aforementioned fixed end 10 includes a mounting base 19 fixed to the measuring end of the torque sensor 20. A fixing head 18 is detachably mounted at the end of the mounting base 19. The end of the fixing head 18 is a bayonet connector for engaging with the nut at the end of the release device. The fixing head 18 is detachable to accommodate release devices of different sizes.
[0031] A linear motor 22 is installed inside the cabinet 8. The motor mount of the linear motor 22 is fixed to the bottom surface of the test bench 6. The motor axis of the linear motor 22 passes through the test bench 6 and is connected to the tension and compression sensor 17.
[0032] Further integration Figure 5 A fixed seat 12 is provided inside the fixed cover 1, and the fixed seat 12 is fixed to the surface of the test bench 6. A drive motor 11 is fixed on the end face of the fixed seat 12 facing away from the movable cover 5, and a bearing sleeve 13 is fixed on the end face of the other end of the fixed seat 12. The motor shaft of the drive motor 11 passes through the fixed seat 12 and enters the bearing sleeve 13. The torque end 9 includes a torsion sleeve 14 fixed to the end of the bearing sleeve 13. The torsion sleeve 14 is installed in the bearing sleeve 13 and is coaxially fixed to the motor shaft of the drive motor 11 in the bearing sleeve 13 by a positioning pin 25.
[0033] The torque end 9 also includes a connecting flange 23 fixed to the end of the torque sleeve 14. The center hole of the connecting flange 23 is a threaded hole. The torque head 15 passes through the middle of the connecting flange 23 and is threadedly connected to the center hole of the connecting flange 23. The release device to be tested is also installed at the screw at the end of the torque head 15 by thread.
[0034] Before the torque head 15 is installed into the connecting flange 23, a reverse fastening nut 24 is also fitted on its outside. After the torque head 15 is installed into the connecting flange 23, since the position of the nut at the end of the release device is difficult to determine, the nut at the end of the release device cannot be matched with the bayonet of the fixing head 18. Therefore, after rotating the torque head 15 to match the nut at the end of the release device with the bayonet of the fixing head 18, the reverse fastening nut 24 can be rotated toward the torsion sleeve 14 side to lock the torque head 15.
[0035] The specific working process and working principle are as follows:
[0036] Install the release device to be tested onto the screw at the end of the torque head 15. After the release device is tightened, rotate the torque head 15 so that the direction of the nut at the end of the release device matches the direction of the latch at the end of the fixing head 18. Then, rotate the reverse tightening nut 24 toward the side of the torsion sleeve 14 to lock the torque head 15.
[0037] The movable cover 5 is pushed along the guide rail 4. After the fixed head 18 moves to the release device along with the movable cover 5, the bayonet at the end of the fixed head 18 engages with the nut at the end of the release device. Then the drive motor 11 rotates. The torque output by the drive motor 11 is transmitted to the release device through the torsion sleeve 14, the connecting flange 23 and the torque head 15. Since the fixed head 18 is fixed, the torque applied to the release device is detected by the torque sensor 20 at the fixed head 18. In actual testing, a preset torque can be applied to the release device, or the breaking torque of the release device can be recorded when the release device is broken, as well as the torque test.
[0038] During the bending test, the movable cover 5 is moved away from the release device, and the fixed head 18 is separated from the release device. The linear motor 22 is activated, pushing the tension / compression sensor 17 and the bending head 16 upward. After the bending head 16 contacts the release device, radial pressure is applied to it, causing the release device to bend. In actual testing, a preset pressure can be applied to the release device, or the breaking pressure of the release device and the bending test can be recorded when the release device is broken.
[0039] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.
Claims
1. A bending and torsion testing device for a release device, comprising a test bench (6), wherein two connectors for docking with the release device are provided on the surface of the test bench (6), characterized in that: A fixed seat (12) and a movable seat (21) that can move relative to each other are provided on the surface of the test bench (6). The two joints include a torque end (9) installed on the surface of the fixed seat (12) and a fixed end (10) installed on the movable seat (21). A rotation drive mechanism for driving the torque end (9) to rotate is also provided on the fixed seat (12). A lifting bending force test unit is also provided on the surface of the test bench (6). The bending force test unit faces upward directly at the release device.
2. The bending and torsion testing device for the release device according to claim 1, characterized in that: The bending force test unit includes a linear output mechanism installed at the bottom of the test bench (6). The moving end of the linear output mechanism extends upward through the test bench (6) and then to the surface of the test bench (6). A bending head (16) is fixed at the end of the moving end of the linear output mechanism.
3. The bending and torsion testing device for the release device according to claim 2, characterized in that: A tension / compression sensor (17) is also installed between the moving end of the linear output mechanism and the bending head (16).
4. The bending and torsion testing device for the release device according to claim 1, characterized in that: A guide rail (4) is provided on the surface of the test bench (6). The movable seat (21) is slidably disposed on the surface of the test bench (6) via the guide rail (4). The fixed seat (12) is fixed relative to the movable seat (21) at the end of the test bench (6).
5. The bending and torsion testing device for the release device according to claim 1 or 4, characterized in that: The driving mechanism is a drive motor (11) mounted on the surface of the fixed seat (12). The motor shaft of the drive motor (11) passes through the fixed seat (12) and is fixed to the torque end (9).
6. The bending and torsion testing device for the release device according to claim 5, characterized in that: The torque end (9) includes a torsion sleeve (14) that is coaxially fixed with the motor shaft of the drive motor (11). A connecting flange (23) is fixed at the end of the torsion sleeve (14), and the torque head (15) is threadedly connected to the connecting flange (23).
7. The bending and torsion testing device for the release device according to claim 6, characterized in that: A reverse fastening nut (24) is also fitted on the outside of the torque head (15).
8. The bending and torsion testing device for the release device according to claim 1, characterized in that: A torque sensor (20) is fixed on the surface of the movable seat (21), and a fixed end (10) is fixed to the end of the torque sensor (20).
9. The bending and torsion testing device for the release device according to claim 8, characterized in that: The fixed end (10) includes a mounting base (19) fixed to the end of the torque sensor (20), and a fixed head (18) is detachably provided at the end of the mounting base (19). The end of the fixed head (18) is a bayonet that engages with the release device.