Multi-station strength detection device for insulator manufacturing

Abstract

The present application relates to the technical field of insulator detection, and particularly relates to a multi-station strength detection device for insulator manufacturing, which comprises a base, a string-type insulator to be detected is arranged above the base, an electric hydraulic rod for tension detection is arranged at the bottom of the string-type insulator, an insulator clamp for clamping is further arranged at the side of the string-type insulator, and a test mechanism for driving the insulator clamp to move is further arranged above the base; the string-type insulator, the electric hydraulic rod, the insulator clamp and the test mechanism are cooperated to drive the insulator clamp and the string-type insulator to rotate synchronously to a specified angle, the inclined use state of the string-type insulator in the actual working condition is accurately simulated, the insulator can be disassembled and replaced through the insulator clamp, the stress condition of the insulator in the on-site replacement process can be simulated, the mechanical strength of the insulator during the replacement operation can be accurately detected, and the strength detection requirement of the insulator in the whole use scene is met.

Description

Technical Field

[0001] This invention relates to the field of insulator testing technology, and in particular to a multi-station strength testing device for insulator manufacturing. Background Technology

[0002] An insulator is a device installed between conductors at different potentials or between a conductor and a grounding component, capable of withstanding voltage and mechanical stress. Insulators are a special type of insulation control that plays an important role in overhead transmission lines. Before leaving the factory, insulators must be tested for strength using specialized testing equipment.

[0003] Existing string insulator testing devices mostly adopt vertical testing methods, which can only simulate the performance testing of insulators in a vertical state. However, string insulators are often in an inclined state during actual installation and use. Such devices cannot match the actual usage angle for testing, resulting in inaccurate test results. Therefore, a multi-station strength testing device for insulator manufacturing is proposed. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides a multi-station strength testing device for insulator manufacturing.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A multi-station strength testing device for insulator manufacturing includes a base, a string insulator to be tested is arranged on the top of the base, an electric hydraulic rod for tensile testing is arranged at the bottom of the string insulator, and an insulator clamp for clamping the string insulator is arranged on the side of the string insulator. A testing mechanism for moving the insulator clamp is also arranged on the top of the base. The testing mechanism can also drive the string insulator to rotate, adjusting the angle of the string insulator during testing; The testing mechanism includes two brackets set above the base, and a limit ring is fixed on the top of the two brackets. The side of the limit ring is provided with a drive mechanism to drive the insulator clamp to rotate. The testing mechanism also includes a positioning ring disposed above the base, an insulator clamp fixed to the side of the positioning ring, and a transmission mechanism that provides power to the drive mechanism is provided between the limiting ring and the positioning ring.

[0006] The bottom of the string insulator is fixed to the telescopic end of the electro-hydraulic rod, and the string insulator, electro-hydraulic rod and insulator clamp are set between the limiting ring and the positioning ring. The string insulator and electro-hydraulic rod are set on the side closer to the positioning ring, and the insulator clamp is set on the side closer to the limiting ring. The limiting ring and the positioning ring are set in a circular shape, and the centers of the limiting ring and the positioning ring are set on the same horizontal straight line.

[0007] As a preferred embodiment of the present invention, the driving mechanism includes a locking rod movably connected to the side of the limiting ring, and a support plate is fixed to the end of the locking rod away from the limiting ring, and an mounting plate is provided in the middle of the support plate. Two positioning plates are symmetrically fixed on the side of the support plate away from the limiting ring, and a threaded rod is provided between the two positioning plates. The mounting plate is screwed to the outside of the threaded rod. The insulator clamp is fixed on the side of the mounting plate away from the support plate. The electro-hydraulic rod and the support plate are arranged between the limiting ring and the positioning ring. The middle of the mounting plate is provided with a first threaded hole that matches the threaded rod. When the threaded rod is rotated, the first threaded hole of the mounting plate mates with the threaded rod. The mounting plate moves vertically up and down along the outer wall of the threaded rod. The mounting plate drives the insulator clamp to move vertically up and down, adjusting the height of the insulator clamp, thereby facilitating the fixing and replacement of the string insulator.

[0008] As a preferred embodiment of the present invention, the limiting ring is further provided with an annular groove on the side near the positioning ring, and the end of the locking rod away from the support plate is inserted into the annular groove, and the end of the locking rod away from the support plate can rotate along the inside of the annular groove.

[0009] As a preferred embodiment of the present invention, the transmission mechanism includes a connecting plate fixed between two supports, a servo motor fixed to the top of the connecting plate, and a transmission sleeve fixed to the output shaft of the servo motor. The axis of the transmission sleeve and the center of the positioning ring are set on the same horizontal straight line, and the upper half of the support plate is fixed to the outer wall of the transmission sleeve. The output shaft of the servo motor drives the transmission sleeve to rotate, the transmission sleeve drives the support plate to rotate, the support plate drives the insulator clamp to rotate around the center of the limiting ring, and the support plate drives the insulator clamp to rotate around the center of the limiting ring, thus adjusting the rotation angle of the insulator clamp.

[0010] As a preferred technical solution of the present invention, a transmission rod is fixed to the end of the transmission sleeve away from the servo motor, and a connecting plate for hooking the string insulator is fixed to the outer wall of the transmission rod. A positioning plate is fixed on the side of the positioning ring away from the limiting ring. Several reinforcing rods are provided between the positioning plate and the positioning ring. A load-bearing rod that supports the transmission rod is rotatably connected to the end of the transmission rod away from the connecting plate. The cylinder of the electro-hydraulic rod is fixed to the lower half of the positioning ring near the limit ring. The axis of the positioning plate and the center of the transmission sleeve are set on the same horizontal straight line. The bottom of the load-bearing rod is fixed to the top of the base. The output shaft of the support plate drives the transmission sleeve to rotate, the transmission sleeve drives the transmission rod to rotate, the transmission rod drives the connecting plate and the positioning plate to rotate, the positioning plate drives the positioning ring to rotate through the reinforcing rod, the positioning ring drives the electro-hydraulic rod to rotate, and the connecting plate drives the string insulator to rotate synchronously with the electro-hydraulic rod.

[0011] As a preferred technical solution of the present invention, a limiting rod is also fixed on the outer wall of the transmission rod near the transmission sleeve, and an insertion hole adapted to the transmission rod is opened in the middle of the transmission sleeve, and a limiting groove adapted to the limiting rod is also opened on the inner wall of the insertion hole. The transmission rod is inserted inside the transmission sleeve, and the limiting rod is inserted inside the insertion hole; The interaction between the limiting rod and the limiting groove ensures that the transmission sleeve can drive the transmission rod to rotate synchronously when it rotates, thus preventing relative slippage or free rotation between the transmission sleeve and the transmission rod.

[0012] As a preferred embodiment of the present invention, a movable rod is also fixed between the two supports, and the movable rod is slidably mounted above the base; The bottom of the movable rod is also fixed with a slider, and the top of the base is also provided with a sliding groove that matches the slider. The slider is pushed to move, and the slider drives the bracket to move laterally via a moving rod. The bracket then drives the servo motor to move upward.

[0013] As a preferred embodiment of the present invention, a lead screw is rotatably installed inside the slide groove, and a second threaded hole adapted to the lead screw is opened in the middle of the slider. When the lead screw is rotated, the lead screw drives the slider to move along the inside of the slide groove. The slider drives the servo motor to move laterally, the servo motor drives the bracket to move laterally, the bracket drives the positioning ring to move laterally, and the servo motor drives the transmission sleeve to move laterally, so that the moving rod moves along the outer wall of the transmission rod.

[0014] Compared with the prior art, the beneficial effects that this invention can achieve are: 1. This invention utilizes the cooperation of structures such as string insulators, electro-hydraulic rods, insulator clamps, testing mechanisms, transmission sleeves, transmission rods, connecting discs, support plates, threaded rods, and clamping rods to drive the insulator clamps and string insulators to rotate synchronously to a specified angle. This accurately simulates the tilted use state of string insulators under actual working conditions. The insulator clamps enable the disassembly and replacement of insulators, simulating the stress conditions of insulators during on-site replacement. It accurately detects the mechanical strength of insulators during replacement operations, meeting the strength testing requirements of insulators in all usage scenarios and significantly improving the functionality and practicality of the testing device. 2. This invention, through the cooperation of a testing mechanism, insulator clamps, support plates, and threaded rods, flexibly adjusts the relative height between the insulator clamps and the string insulators, enabling the insulator clamps to stably clamp and position the string insulators at different positions. This effectively expands the applicability of the device, improves the versatility and adaptability of the testing device, and ensures accurate and reliable clamping and positioning. 3. The present invention utilizes the cooperation of structures such as a limiting ring, a positioning ring, a transmission sleeve, a transmission rod, a connecting plate, a support plate, and a locking rod. The annular groove on the side of the limiting ring provides reliable limiting and guidance for the locking rod, ensuring that the locking rod drives the support plate to rotate stably around the center of the limiting ring. This effectively guarantees the coaxiality and stability of the rotation process and avoids rotational deviation. 4. This invention, through the cooperation of structures such as transmission sleeve, transmission rod, connecting plate, limiting rod and support plate, enables the transmission sleeve to rotate synchronously and drive the transmission rod to rotate steadily, effectively eliminating the relative slippage and free rotation between the two, ensuring the high efficiency and continuity of power transmission, and guaranteeing transmission accuracy. 5. This invention, through the cooperation of structures such as moving rod, lead screw, bracket, positioning ring, support plate and insulator clamp, adjusts the distance between string insulators and insulator clamps, which can adapt to string insulators of different specifications and lengths, effectively expanding the application range of the testing device, improving the versatility and adaptability of the device, and ensuring the clamping accuracy of the insulator clamps on string insulators, providing a reliable guarantee for the smooth conduct of subsequent strength testing; 6. This invention achieves lateral movement adjustment of the limit ring relative to the positioning ring through the cooperation of structures such as servo motor, limit ring, transmission sleeve, transmission rod, connecting plate, positioning plate and positioning ring, while ensuring that the limit ring and positioning ring rotate synchronously, effectively ensuring the consistency and coaxiality of the movement of the two components, and improving the overall stability and accuracy of the device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the string insulator of the present invention; Figure 3 This is a schematic diagram of the testing mechanism of the present invention; Figure 4 This is a schematic diagram of the limiting ring structure of the present invention; Figure 5 This is a schematic diagram of the support plate of the present invention; Figure 6 This is a schematic diagram of the transmission sleeve of the present invention; Figure 7 This is a schematic diagram of the transmission rod of the present invention; Figure 8 This is a schematic diagram of the positioning ring of the present invention; Figure 9 This is a schematic diagram of the load-bearing rod of the present invention.

[0016] The components include: 1. Base; 2. String insulator; 3. Electro-hydraulic rod; 4. Insulator clamp; 5. Testing mechanism; 501. Bracket; 502. Connecting plate; 503. Servo motor; 504. Limiting ring; 505. Transmission sleeve; 506. Transmission rod; 507. Connecting disc; 508. Support plate; 509. Threaded rod; 510. Clamping rod; 511. Limiting rod; 512. Positioning disc; 513. Load-bearing rod; 514. Positioning ring; 515. Moving rod; 516. Lead screw. Detailed Implementation

[0017] To make the technical means, creative features, and achieved objectives and effects of this invention easier to understand, the invention is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0018] Example: The present invention provides, as follows Figure 1 and Figure 2 The multi-station strength testing device for insulator manufacturing shown includes a base 1, a string insulator 2 to be tested is arranged on the top of the base 1, an electric hydraulic rod 3 for tensile testing is arranged at the bottom of the string insulator 2, and an insulator clamp 4 for clamping the string insulator 2 is arranged on the side of the string insulator 2. The insulator clamp 4 can refer to the large knife clamp produced by Bazhou Yiju Electric Power Technology Service Co., Ltd.

[0019] As can be seen from the above, when it is necessary to test the strength of the string insulator 2, the telescopic end of the electric hydraulic rod 3 drives the string insulator 2 to be stretched downward to test the strength of the string insulator 2.

[0020] refer to Figure 3 , Figure 4 and Figure 5 As shown, a test mechanism 5 that drives the insulator clamp 4 to move is also provided above the base 1; The testing mechanism 5 can also drive the string insulator 2 to rotate, adjusting the angle of the string insulator 2 during testing; The testing mechanism 5 includes two brackets 501 disposed above the base 1, and a limit ring 504 is fixed to the top of the two brackets 501; The testing mechanism 5 also includes a positioning ring 514 disposed above the base 1, and the insulator clamp 4 is fixed to the side of the positioning ring 514.

[0021] The bottom of the string insulator 2 is fixed to the telescopic end of the electro-hydraulic rod 3. The string insulator 2, the electro-hydraulic rod 3, and the insulator clamp 4 are arranged between the limiting ring 504 and the positioning ring 514. The string insulator 2 and the electro-hydraulic rod 3 are arranged on the side closer to the positioning ring 514, and the insulator clamp 4 is arranged on the side closer to the limiting ring 504. The limiting ring 504 and the positioning ring 514 are circular, and the centers of the limiting ring 504 and the positioning ring 514 are arranged on the same horizontal straight line.

[0022] refer to Figure 3 , Figure 4 and Figure 5 As shown, the side of the limiting ring 504 is provided with a driving mechanism that drives the insulator clamp 4 to rotate. The driving mechanism includes a clamp rod 510 movably connected to the side of the limiting ring 504. The clamp rod 510 is based on the principle that one end of the limiting ring 504 is also fixed with a support plate 508, and the middle of the support plate 508 is provided with an installation plate. Two positioning plates are symmetrically fixed on the side of the support plate 508 away from the limiting ring 504, and a threaded rod 509 is provided between the two positioning plates. The mounting plate is screwed to the outside of the threaded rod 509. The insulator clamp 4 is fixed on the side of the mounting plate away from the support plate 508. The electro-hydraulic rod 3 and the support plate 508 are set between the limiting ring 504 and the positioning ring 514. The middle of the mounting plate is provided with a first threaded hole that matches the threaded rod 509. When the threaded rod 509 is rotated, the first threaded hole of the mounting plate mates with the threaded rod 509. The mounting plate moves vertically up and down along the outer wall of the threaded rod 509. The mounting plate drives the insulator clamp 4 to move vertically up and down, adjusting the height of the insulator clamp 4, thereby facilitating the fixing and replacement of the string insulator 2.

[0023] refer to Figure 3 , Figure 4 and Figure 5 As shown, the limiting ring 504 is also provided with an annular groove on the side near the positioning ring 514. The end of the locking rod 510 away from the support plate 508 is inserted into the annular groove, and the end of the locking rod 510 away from the support plate 508 can rotate along the inside of the annular groove.

[0024] refer to Figure 6 , Figure 7 and Figure 8 As shown, a transmission mechanism that provides power to the drive mechanism is also provided between the limiting ring 504 and the positioning ring 514. The transmission mechanism includes a connecting plate 502 fixed between two brackets 501. A servo motor 503 is fixed on the top of the connecting plate 502. A transmission sleeve 505 is fixed on the output shaft of the servo motor 503. The axis of the transmission sleeve 505 and the dot of the positioning ring 514 are set on the same horizontal straight line, and the upper half of the support plate 508 is fixed to the outer wall of the transmission sleeve 505. The output shaft of the servo motor 503 drives the transmission sleeve 505 to rotate, the transmission sleeve 505 drives the support plate 508 to rotate, the support plate 508 drives the insulator clamp 4 to rotate around the center of the limiting ring 504, and the support plate 508 drives the insulator clamp 4 to rotate around the center of the limiting ring 504, thereby adjusting the rotation angle of the insulator clamp 4.

[0025] refer to Figure 6 , Figure 7 and Figure 8 As shown, a transmission rod 506 is also fixed at the end of the transmission sleeve 505 away from the servo motor 503, and a connecting plate 507 for hooking the string insulator 2 is also fixed on the outer wall of the transmission rod 506. A positioning disc 512 is fixed on the side of the positioning ring 514 away from the limiting ring 504. Several reinforcing rods are provided between the positioning disc 512 and the positioning ring 514. A load-bearing rod 513 that supports the transmission rod 506 is also rotatably mounted on the end of the transmission rod 506 away from the connecting disc 507. The cylinder of the electric hydraulic rod 3 is fixed to the lower half of the positioning ring 514 near the limit ring 504. The axis of the positioning plate 512 and the center of the transmission sleeve 505 are set on the same horizontal straight line. The bottom of the load-bearing rod 513 is fixed to the top of the base 1. The output shaft of the support plate 508 drives the transmission sleeve 505 to rotate. The transmission sleeve 505 drives the transmission rod 506 to rotate. The transmission rod 506 drives the connecting plate 507 and the positioning plate 512 to rotate. The positioning plate 512 drives the positioning ring 514 to rotate through the reinforcing rod. The positioning ring 514 drives the electric hydraulic rod 3 to rotate. The connecting plate 507 drives the string insulator 2 to rotate synchronously with the electric hydraulic rod 3.

[0026] refer to Figure 6 , Figure 7 and Figure 8 As shown, a limiting rod 511 is also fixed on the outer wall of the transmission rod 506 near the transmission sleeve 505. The transmission sleeve 505 has an insertion hole in the middle that matches the transmission rod 506, and the inner wall of the insertion hole has a limiting groove that matches the limiting rod 511. The transmission rod 506 is inserted inside the transmission sleeve 505, and the limiting rod 511 is inserted inside the insertion hole; The interaction between the limiting rod 511 and the limiting groove ensures that the transmission sleeve 505 can drive the transmission rod 506 to rotate synchronously when it rotates, thus preventing relative slippage or free rotation between the transmission sleeve 505 and the transmission rod 506.

[0027] The telescopic end of the electric hydraulic rod 3 pulls the string insulator 2 downwards, activating the support plate 508. The output shaft of the support plate 508 drives the transmission sleeve 505 to rotate, which in turn drives the transmission rod 506 to rotate. The transmission rod 506 then drives the connecting plate 507 and the positioning plate 512 to rotate. The positioning plate 512, through a reinforcing rod, drives the positioning ring 514 to rotate, which in turn drives the electric hydraulic rod 3 to rotate. The connecting plate 507 then drives the string insulator 2 to rotate synchronously with the electric hydraulic rod 3, adjusting the angle between the string insulator 2 and the base 1, thus positioning the string insulator... 2. Adjust from vertical to tilted position to simulate the tilted or horizontal placement of the string insulator 2 during daily use. Rotate the threaded rod 509, and the first threaded hole of the mounting plate engages with the threaded rod 509. The mounting plate moves vertically up and down along the outer wall of the threaded rod 509. The mounting plate drives the insulator clamp 4 to move vertically up and down. Adjust the height of the insulator clamp 4. After clamping the string insulator 2 with the insulator clamp 4, stretch the string insulator 2 connected in series through the insulator clamp 4 to simulate the individual replacement of the already connected string insulator 2.

[0028] refer to Figure 9 As shown, a movable rod 515 is also fixed between the two brackets 501, and the movable rod 515 is slidably installed above the base 1; The bottom of the moving rod 515 is also fixed with a slider, and the top of the base 1 is also provided with a sliding groove that matches the slider. Pushing the slider to move it causes the support 501 to move laterally via the moving rod 515, and the support 501 drives the servo motor 503 to move upward.

[0029] refer to Figure 9 As shown, a lead screw 516 is rotatably installed inside the slide groove. A second threaded hole adapted to the lead screw 516 is opened in the middle of the slider. When the lead screw 516 is rotated, the lead screw 516 drives the slider to move along the inside of the slide groove. The slider drives the servo motor 503 to move laterally. The servo motor 503 drives the bracket 501 to move laterally. The bracket 501 drives the positioning ring 514 to move laterally. The servo motor 503 drives the transmission sleeve 505 to move laterally, so that the moving rod 515 moves along the outer wall of the transmission rod 506.

[0030] Rotating the lead screw 516 causes the slider to move along the inside of the groove. The slider causes the servo motor 503 to move laterally. The servo motor 503 causes the bracket 501 to move laterally. The bracket 501 causes the positioning ring 514 to move laterally. The servo motor 503 causes the transmission sleeve 505 to move laterally, causing the moving rod 515 to move along the outer wall of the transmission rod 506. The moving rod 515 causes the bracket 501 to move. The bracket 501 causes the limiting ring 504 to move closer to the positioning ring 514. The limiting ring 504 causes the insulator clamp 4 to move closer to the string insulator 2, adjusting the distance between the string insulator 2 and the insulator clamp 4.

[0031] Working principle: Hook the string insulator 2 directly below the connecting plate 507, allowing the string insulator 2 to rotate naturally and hang at the bottom of the connecting plate 507. The string insulator 2 is in a vertical position. Pull the string insulator 2 through the electric hydraulic rod 3 to perform a strength test on the string insulator 2. Rotating screw 516 drives slider along the inside of the groove. Slider drives servo motor 503 to move laterally. Servo motor 503 drives bracket 501 to move laterally. Bracket 501 drives positioning ring 514 to move laterally. Servo motor 503 drives transmission sleeve 505 to move laterally, causing moving rod 515 to move along the outer wall of transmission rod 506. Moving rod 515 drives bracket 501 to move. Bracket 501 drives limiting ring 504 to move closer to positioning ring 514. Limiting ring 504 drives insulator clamp 4 to move closer to string insulator 2. Adjust the distance between string insulator 2 and insulator clamp 4. Then install insulator clamp 4 on the outside of string insulator 2. Replace string insulator 2 through insulator clamp 4. Simulate the use of string insulator 2 in vertical state. Test the strength of string insulator 2 in vertical state by the tension generated by electric hydraulic rod 3. The telescopic end of the electro-hydraulic rod 3 continuously applies tension to the string insulator 2, activating the support plate 508. The output shaft of the support plate 508 drives the transmission sleeve 505 to rotate, which in turn drives the transmission rod 506 to rotate. The transmission rod 506 then drives the connecting plate 507 and the positioning plate 512 to rotate. The positioning plate 512, through a reinforcing rod, drives the positioning ring 514 to rotate, which in turn drives the electro-hydraulic rod 3 to rotate. The connecting plate 507 drives the string insulator 2 to rotate synchronously with the electro-hydraulic rod 3, adjusting the angle between the string insulator 2 and the base 1, thus adjusting the string insulator 2 from a vertical state to an inclined state. This simulates the situation where the string insulator 2 is placed at an incline or horizontal position during daily use. The electro-hydraulic rod 3 continuously applies tension to the string insulator 2, simulating the effects of tension and gravity on the string insulator 2 during actual use. Rotating the threaded rod 509, the first threaded hole of the mounting plate mates with the threaded rod 509. The mounting plate moves vertically up and down along the outer wall of the threaded rod 509, causing the insulator clamp 4 to move vertically up and down. Adjusting the height of the insulator clamp 4, the insulator clamp 4 clamps the string insulator 2, and then stretches the string insulator 2. This simulates the replacement of a single string insulator 2 that has been assembled, thereby enabling the stress strength test of the string insulator 2 during the disassembly and replacement process using the insulator clamp 4. This accurately restores the stress state of the insulator under actual replacement conditions on site, accurately obtains its mechanical performance parameters during the disassembly and assembly process, effectively improves the authenticity and reference value of the test results, and provides reliable data support for the structural design and quality assessment of string insulators.

[0032] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A multi-station strength testing device for insulator manufacturing, comprising a base (1), wherein a string insulator (2) to be tested is disposed above the base (1), an electro-hydraulic rod (3) for tensile testing is disposed at the bottom of the string insulator (2), and an insulator clamp (4) for holding the string insulator (2) is disposed on the side of the string insulator (2), characterized in that, A test mechanism (5) for moving the insulator clamp (4) is also provided above the base (1); The testing mechanism (5) can also drive the string insulator (2) to rotate and adjust the angle of the string insulator (2) during testing; The test mechanism (5) includes two brackets (501) set above the base (1). The top of the two brackets (501) is also fixed with a limit ring (504). The side of the limit ring (504) is provided with a drive mechanism to drive the insulator clamp (4) to rotate. The test mechanism (5) also includes a positioning ring (514) set above the base (1), an insulator clamp (4) fixed on the side of the positioning ring (514), and a transmission mechanism that provides power to the drive mechanism is also provided between the limiting ring (504) and the positioning ring (514).

2. The multi-station strength testing device for insulator manufacturing according to claim 1, characterized in that, The driving mechanism includes a lever (510) movably connected to the side of the limiting ring (504). A support plate (508) is fixed to one end of the lever (510) away from the limiting ring (504). An mounting plate is provided in the middle of the support plate (508). Two positioning plates are symmetrically fixed on the side of the support plate (508) away from the limiting ring (504), and a threaded rod (509) is provided between the two positioning plates. The mounting plate is screwed to the outside of the threaded rod (509).

3. The multi-station strength testing device for insulator manufacturing according to claim 2, characterized in that, The limiting ring (504) is also provided with an annular groove on the side near the positioning ring (514). The end of the locking rod (510) away from the support plate (508) is inserted into the annular groove, and the end of the locking rod (510) away from the support plate (508) can rotate along the inside of the annular groove.

4. The multi-station strength testing device for insulator manufacturing according to claim 1, characterized in that, The transmission mechanism includes a connecting plate (502) fixed between two supports (501), a servo motor (503) fixed to the top of the connecting plate (502), and a transmission sleeve (505) fixed to the output shaft of the servo motor (503). The axis of the transmission sleeve (505) and the center of the positioning ring (514) are set on the same horizontal straight line, and the upper half of the support plate (508) is fixed to the outer wall of the transmission sleeve (505).

5. The multi-station strength testing device for insulator manufacturing according to claim 4, characterized in that, The transmission sleeve (505) is also fixed with a transmission rod (506) at the end away from the servo motor (503), and a connecting plate (507) for hooking the string insulator (2) is also fixed on the outer wall of the transmission rod (506). The positioning ring (514) is further fixed with a positioning disk (512) on the side away from the limiting ring (504). Several reinforcing rods are provided between the positioning disk (512) and the positioning ring (514). The end of the transmission rod (506) away from the connecting disk (507) is also rotatably connected with a load-bearing rod (513) to support the transmission rod (506).

6. The multi-station strength testing device for insulator manufacturing according to claim 5, characterized in that, A limiting rod (511) is also fixed on the outer wall of the transmission rod (506) near the transmission sleeve (505). The transmission sleeve (505) has an insertion hole adapted to the transmission rod (506) in the middle, and the inner wall of the insertion hole has a limiting groove adapted to the limiting rod (511). The transmission rod (506) is inserted inside the transmission sleeve (505), and the limiting rod (511) is inserted inside the insertion hole.

7. The multi-station strength testing device for insulator manufacturing according to claim 1, characterized in that, A movable rod (515) is also fixed between the two supports (501), and the movable rod (515) is slidably installed above the base (1); The bottom of the movable rod (515) is also fixed with a slider, and the base (1) is also provided with a groove that matches the slider.

8. The multi-station strength testing device for insulator manufacturing according to claim 7, characterized in that, A lead screw (516) is rotatably installed inside the slide groove, and a second threaded hole adapted to the lead screw (516) is opened in the middle of the slider.

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