A method for detecting a suspension type porcelain insulator and a device for detecting the suspension type porcelain insulator

Abstract

The application discloses a kind of suspension porcelain insulator detection method and the equipment for the method detection, it is related to insulator detection technical field, including installation platform, the one end of positioning block is provided with the distance adjustment traction piece connected with movable guide block, the other end of tension sensor is provided with the bending detection piece connected with distance adjustment traction piece.The application is provided with bending detection piece, start telescopic cylinder, the extension of inclined connecting rod makes the swing of swing bar relative to positioning block, so that the bending of suspension porcelain insulator occurs, when telescopic cylinder is contracted, the cooperation of first piston cylinder and first piston rod can extract the water solution in second piston cylinder, so as to make worm drive worm gear rotate, so it can make mounting seat drive suspension porcelain insulator rotate, the bending of suspension porcelain insulator in different directions is made by the repeated extension and contraction of telescopic cylinder, improve the accuracy of detection data.

Description

Technical Field

[0001] This invention relates to the field of insulator testing technology, specifically a method for testing suspension porcelain insulators and the equipment used in this method. Background Technology

[0002] Suspension insulators are generally made of insulating parts and metal fittings glued together or mechanically clamped together. Insulators are widely used in power systems. They are generally external insulators that work under atmospheric conditions. The busbars of overhead transmission lines, power plants and substations, and the external live conductors of various electrical equipment must be supported by insulators to insulate them from the ground or other conductors with potential differences.

[0003] When conducting a comprehensive performance evaluation of suspension insulators, considering only their axial tensile properties is insufficient to reflect their mechanical performance under complex actual working conditions. In actual operation, suspension insulators often face forces from different directions, especially lateral forces. For example, under strong winds, insulators will bear significant lateral wind pressure, causing them to bend and deform. However, it is generally inconvenient to test the performance of series suspension insulators under lateral forces during insulator testing, which leads to certain limitations in testing. Summary of the Invention

[0004] The purpose of this invention is to provide a method for testing suspension porcelain insulators and the equipment used for testing in order to solve the problem of inconvenience in detecting the lateral force of insulators.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a suspension porcelain insulator testing device, comprising a mounting platform, an H-shaped connecting frame fixedly connected to the top of the mounting platform, a positioning block connected to the top of one end of the H-shaped connecting frame, a controller provided on the top of the positioning block, a swing rod rotatably connected to both sides of the positioning block via a rotating shaft, a movable guide block movably sleeved on the swing rod, an adjustable tension traction component connected to the movable guide block provided at one end of the positioning block, a positioning block installed on one side of the movable guide block, a tension sensor rotatably connected to the side of the positioning block near the positioning block via a rotating shaft, a mounting base installed on the side of the tension sensor away from the positioning block, and a bending detection component connected to the adjustable tension traction component provided at the other end of the tension sensor.

[0006] As a further embodiment of the present invention: the number of the positioning rods is set to two, and the two positioning rods are symmetrically arranged along the vertical central axis of the positioning block.

[0007] As a further embodiment of the present invention: the adjustable traction component includes a servo motor mounted on the top of the H-shaped connecting frame away from the controller. The output end of the servo motor is connected to an adjustable lead screw, and the end of the adjustable lead screw away from the servo motor is rotatably connected to a positioning block via a bearing. A threaded sleeve is movably sleeved on the outer side of the adjustable lead screw. A positioning guide block is rotatably connected to the side of the threaded sleeve near the positioning block via a rotating shaft. One end of the positioning guide block is rotatably connected to a diagonal connecting rod via a rotating shaft. The end of the diagonal connecting rod away from the positioning guide block is rotatably connected to a movable guide block via a rotating shaft.

[0008] As a further embodiment of the present invention: the inner side of the threaded sleeve is provided with a threaded hole that matches the adjusting screw.

[0009] As a further embodiment of the present invention: the rotating shaft connecting the positioning guide block and the threaded sleeve block, and the positioning rod and the positioning block are coaxial.

[0010] As a further embodiment of the present invention: the bending detection component includes a telescopic cylinder installed inside the H-shaped connecting frame, the output end of the telescopic cylinder is connected to a movable frame, the two sides of the H-shaped connecting frame are fixedly connected to a first piston cylinder located inside the movable frame, a first piston rod extending to the bottom of the first piston cylinder is inserted inside the first piston cylinder, the bottom end of the first piston rod is connected to the bottom of the movable frame, the bottom of the first piston cylinder is provided with a telescopic spring connected to the first piston rod, the top of the movable frame is provided with a first spur rack, and one end of the rotating shaft connected to the positioning block of the swing rod is provided with a transmission spur gear meshing with the first spur rack.

[0011] As a further embodiment of the present invention: the bending detection component further includes a second piston cylinder installed on the top of the positioning block, a second piston rod extending to the outside of the second piston cylinder is inserted inside the second piston cylinder, a second spur rack is provided at one end of the second piston rod, a worm wheel is provided at one end of the rotating shaft connecting the positioning block and the tension sensor, a worm gear meshing with the worm wheel is rotatably connected to one side of the positioning block via the rotating shaft, a ratchet is fixedly connected to one end of the worm gear, a gear ring located outside the ratchet is rotatably connected to one end of the worm gear via a bearing, a pawl meshing with the ratchet is rotatably connected to the inner wall of the gear ring via the rotating shaft, the second spur rack meshes with the outer wall of the gear ring, and a flexible tube connected to the top side of the first piston cylinder is provided at the end of the second piston cylinder away from the second piston rod.

[0012] As a further embodiment of the present invention: a torsion spring is engaged with the outer side of the rotating shaft that connects the pawl to the inner wall of the gear ring via a slot.

[0013] As a further embodiment of the present invention: the first piston cylinder and the second piston cylinder are connected by a flexible hose, the inner wall diameter of the first piston cylinder is larger than the inner wall diameter of the second piston cylinder, and the internal volumes of the first piston cylinder and the second piston cylinder are equal.

[0014] This invention also discloses a method for testing suspension porcelain insulators, using the aforementioned testing equipment for suspension porcelain insulators, comprising the following steps:

[0015] S1: First, connect both ends of the suspension porcelain insulator to the mounting base. Then, control the adjustable traction component through the controller. At this time, the mounting base will pull the two ends of the suspension porcelain insulator to pull the insulator to a horizontal state.

[0016] S2: The adjustable traction component continues to operate. The tension sensor calculates the tension on the insulator by continuously pulling the suspension porcelain insulator through the mounting base. Then, it judges whether the insulator is qualified under the specified tension based on whether the insulator is damaged.

[0017] S3: Then the controller controls the bending detection component to operate. At this time, the swing rod will rotate relative to the positioning block to make the insulator bend. During this process, the force sensor detects the force on the insulator when it bends.

[0018] S4: After the test is completed, the controller controls the operation of the bending detection component and the pitch traction component to restore the swing rod and the movable guide block. Then, the suspended porcelain insulator that has been tested is removed.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. By setting the pitch adjustment traction component and starting the servo motor, the operation of the servo motor drives the pitch adjustment screw to rotate. At this time, the threaded sleeve block will move horizontally along the pitch adjustment screw, thereby causing the positioning guide block to press against one end of the inclined connecting rod. This causes the inclined connecting rod to push the movable guide block, which will then move along the swing rod away from the positioning block. During this process, the movable guide block will drive the mounting base to move through the positioning block and the tension sensor, thereby causing the mounting base to pull on both ends of the suspension porcelain insulator. At the same time, the tension sensor can detect the tension on the suspension porcelain insulator. The operation is simple, thereby improving the detection efficiency.

[0021] 2. By setting up a bending detection component and activating the telescopic cylinder, the extension of the inclined connecting rod causes the swing rod to oscillate relative to the positioning block, thereby causing the suspension porcelain insulator to bend. When the telescopic cylinder retracts, the cooperation between the first piston cylinder and the first piston rod extracts the aqueous solution inside the second piston cylinder, which in turn causes the worm gear to rotate. The rotation of the worm gear causes the tension sensor to rotate, which in turn causes the mounting base to rotate the suspension porcelain insulator. Thus, the repeated extension and retraction of the telescopic cylinder causes the suspension porcelain insulator to bend in different directions. In conjunction with the tension sensor, the force on the suspension porcelain insulator during bending can be detected, improving the accuracy of the detection data. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a side view of the present invention;

[0024] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4 This is a schematic diagram of the inner structure of the H-type connecting frame of the present invention;

[0026] Figure 5 This is a schematic diagram showing the connection between the adjusting lead screw and the swing rod of the present invention;

[0027] Figure 6 This is a schematic diagram showing the connection between the tension sensor and the second piston cylinder of the present invention;

[0028] Figure 7 For the present invention Figure 6 Enlarged view at point B in the middle;

[0029] Figure 8 This is a schematic diagram showing the connection between the first piston cylinder and the second piston cylinder of the present invention.

[0030] In the diagram: 1. Mounting platform; 2. H-type connecting frame; 3. Positioning block; 4. Controller; 5. Servo motor; 6. Adjustable lead screw; 7. Transmission spur gear; 8. Positioning rod; 9. Positioning block; 10. Flexible hose; 11. Threaded sleeve block; 12. Diagonal connecting rod; 13. Movable guide block; 14. Worm gear; 15. Worm; 16. First spur rack; 17. First piston cylinder; 18. Movable frame; 19. Telescopic spring; 20. First piston rod; 21. Telescopic cylinder; 22. Positioning guide block; 23. Tension sensor; 24. Mounting base; 25. Second piston rod; 26. Second piston cylinder; 27. Second spur rack; 28. Gear ring; 29. ​​Pawl; 30. Ratchet. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set up" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The following describes embodiments of the invention based on its overall structure.

[0033] Please see Figures 1 to 8 In this embodiment of the invention, a suspension porcelain insulator testing device includes a mounting platform 1. An H-shaped connecting frame 2 is fixedly connected to the top of the mounting platform 1. A positioning block 3 is connected to the top of one end of the H-shaped connecting frame 2. A controller 4 is provided on the top of the positioning block 3. A swing rod 8 is rotatably connected to both sides of the positioning block 3 via a rotating shaft. A movable guide block 13 is movably sleeved on the swing rod 8. An adjustable traction component connected to the movable guide block 13 is provided at one end of the positioning block 3. A positioning block 9 is installed on one side of the movable guide block 13. A tension sensor 23 is rotatably connected to the side of the positioning block 9 near the positioning block 3 via a rotating shaft. A mounting base 24 is installed on the side of the tension sensor 23 away from the positioning block 9. A bending detection component connected to the adjustable traction component is provided at the other end of the tension sensor 23.

[0034] There are two positioning rods 8, and the two positioning rods 8 are symmetrically arranged along the vertical central axis of the positioning block 3.

[0035] In this embodiment: First, the two ends of the suspension porcelain insulator are connected to the mounting base 24. Then, the controller 4 controls the operation of the pitch adjustment traction component. At this time, the mounting base 24 will pull the two ends of the suspension porcelain insulator to pull the insulator to a horizontal state. Then, the pitch adjustment traction component continues to operate. The tension sensor 23 calculates the tension on the insulator by the continuous pulling of the suspension porcelain insulator by the mounting base 24. Then, it is judged whether the insulator is qualified under the specified tension based on whether the insulator is damaged. Then, the controller 4 controls the operation of the bending detection component. At this time, the swing rod 8 will rotate relative to the positioning block 3 to make the insulator bend. During this process, the tension sensor 23 detects the force on the insulator when it bends. After the detection is completed, the controller 4 controls the operation of the bending detection component and the pitch adjustment traction component to restore the swing rod 8 and the movable guide block 13. Then, the suspended porcelain insulator that has been tested is removed.

[0036] Please refer to this carefully. Figure 1 , Figure 2 , Figure 5 The adjustable traction component includes a servo motor 5 mounted on the top of the H-shaped connecting frame 2 away from the controller 4. The output end of the servo motor 5 is connected to an adjustable lead screw 6, and the end of the adjustable lead screw 6 away from the servo motor 5 is rotatably connected to the positioning block 3 through a bearing. A threaded sleeve 11 is movably sleeved on the outer side of the adjustable lead screw 6. A positioning guide block 22 is rotatably connected to the side of the threaded sleeve 11 near the positioning block 3 through a rotating shaft. One end of the positioning guide block 22 is rotatably connected to a diagonal connecting rod 12 through a rotating shaft. The end of the diagonal connecting rod 12 away from the positioning guide block 22 is rotatably connected to a movable guide block 13 through a rotating shaft.

[0037] The inner side of the threaded sleeve 11 is provided with a threaded hole that matches the adjusting screw 6, and the center of the rotating shaft connecting the positioning guide block 22, the threaded sleeve 11, the swing rod 8, and the positioning block 3 is coaxial.

[0038] In this embodiment: the servo motor 5 is started, and the operation of the servo motor 5 drives the adjusting screw 6 to rotate. At this time, the threaded sleeve 11 will move horizontally along the adjusting screw 6, so that the positioning guide block 22 presses one end of the inclined connecting rod 12, thereby causing the inclined connecting rod 12 to push the movable guide block 13. At this time, the movable guide block 13 will move along the swing rod 8 away from the positioning block 3. During this process, the movable guide block 13 will drive the mounting base 24 to move through the positioning block 9 and the tension sensor 23, so that the mounting base 24 pulls the two ends of the suspension porcelain insulator. At the same time, the tension sensor 23 can detect the tension on the suspension porcelain insulator.

[0039] Please refer to this carefully. Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 , Figure 8 The bending detection component includes a telescopic cylinder 21 installed inside the H-shaped frame 2. The output end of the telescopic cylinder 21 is connected to a movable frame 18. The two sides of the H-shaped frame 2 are fixedly connected to a first piston cylinder 17 located inside the movable frame 18. A first piston rod 20 extending to the bottom of the first piston cylinder 17 is inserted inside the first piston cylinder 17. The bottom end of the first piston rod 20 is connected to the bottom of the movable frame 18. A telescopic spring 19 connected to the first piston rod 20 is provided at the bottom of the first piston cylinder 17. A first spur rack 16 is provided at the top of the movable frame 18. A transmission spur gear 7 that meshes with the first spur rack 16 is provided at one end of the rotating shaft that connects the swing rod 8 and the positioning block 3.

[0040] The bending detection component also includes a second piston cylinder 26 mounted on top of the positioning block 9. A second piston rod 25 extending to the outside of the second piston cylinder 26 is inserted inside the second piston cylinder 26. A second spur rack 27 is provided at one end of the second piston rod 25. A worm gear 14 is provided at one end of the rotating shaft connecting the positioning block 9 and the tension sensor 23. A worm 15 meshing with the worm gear 14 is rotatably connected to one side of the positioning block 9 via the rotating shaft. A ratchet 30 is fixedly connected to one end of the worm 15. A gear ring 28 located outside the ratchet 30 is rotatably connected to one end of the worm 15 via a bearing. A pawl 29 meshing with the ratchet 30 is rotatably connected to the inner wall of the gear ring 28 via the rotating shaft. The second spur rack 27 meshes with the outer wall of the gear ring 28. A flexible hose 10 connected to the top side of the first piston cylinder 17 is provided at the end of the second piston cylinder 26 away from the second piston rod 25.

[0041] Among them, the pawl 29 is connected to the inner wall of the gear ring 28, and the outside of the rotating shaft is engaged with a torsion spring through a slot. The first piston cylinder 17 and the second piston cylinder 26 are connected by a hose 10. The inner diameter of the first piston cylinder 17 is larger than the inner diameter of the second piston cylinder 26. The internal volumes of the first piston cylinder 17 and the second piston cylinder 26 are equal.

[0042] In this embodiment: The telescopic cylinder 21 is activated, and the extension of the inclined connecting rod 12 causes the movable frame 18 to move the first spur rack 16 upward. At this time, the first spur rack 16 rotates the transmission spur gear 7, causing the swing rod 8 to swing relative to the positioning block 3, thereby causing the suspension porcelain insulator to bend. During this process, the first piston rod 20 moves upward along with the movable frame 18. The first piston rod 20 then squeezes the aqueous solution inside the first piston cylinder 17, causing the aqueous solution inside the first piston cylinder 17 to enter the second piston cylinder 26 along the hose 10. This causes the second piston rod 25 to move away from the second piston cylinder 26, thereby causing the second spur rack 27 to rotate the gear ring 28. The pawl 29's one-way limit on the ratchet 30 prevents the gear ring 28 from relative to the ratchet 30. The cylinder 21 rotates to bend the suspension porcelain insulator. When the telescopic cylinder 21 retracts, the water solution inside the second piston cylinder 26 is extracted through the cooperation of the first piston cylinder 17 and the first piston rod 20. This causes the second piston rod 25 to drive the second spur rack 27 to move towards the second piston cylinder 26. At this time, when the second spur rack 27 pushes the gear ring 28 to rotate in the opposite direction, the ratchet 30 will rotate synchronously with the gear ring 28 under the action of the pawl 29. This causes the worm gear 15 to drive the worm wheel 14 to rotate. The rotation of the worm wheel 14 causes the tension sensor 23 to rotate, which in turn causes the mounting base 24 to drive the suspension porcelain insulator to rotate. Thus, the repeated extension and retraction of the telescopic cylinder 21 can cause the suspension porcelain insulator to bend in different directions, improving the accuracy of the detection data.

[0043] The following describes a method for testing suspension porcelain insulators, based on the aforementioned testing equipment, and includes the following steps:

[0044] S1: First, connect both ends of the suspension porcelain insulator to the mounting base 24. Start the servo motor 5. The operation of the servo motor 5 drives the adjusting screw 6 to rotate. At this time, the threaded sleeve 11 will move horizontally along the adjusting screw 6, so that the positioning guide block 22 presses one end of the inclined connecting rod 12, thereby pushing the movable guide block 13. At this time, the movable guide block 13 will move along the swing rod 8 away from the positioning block 3. During this process, the movable guide block 13 will drive the mounting base 24 to move through the positioning block 9 and the tension sensor 23, so that the mounting base 24 pulls the two ends of the suspension porcelain insulator, thereby pulling the insulator to a horizontal state.

[0045] S2: The tension sensor 23 calculates the tension on the insulator by continuously pulling the suspension porcelain insulator through the mounting base 24, and then judges whether the insulator is qualified under the specified tension based on whether the insulator is damaged.

[0046] S3: Activate the telescopic cylinder 21. The extension of the inclined connecting rod 12 causes the movable frame 18 to move the first spur rack 16 upward. At this time, the first spur rack 16 rotates the transmission spur gear 7, causing the swing rod 8 to swing relative to the positioning block 3, thus causing the suspension porcelain insulator to bend. During this process, the first piston rod 20 moves upward along with the movable frame 18. The first piston rod 20 then squeezes the aqueous solution inside the first piston cylinder 17, causing the aqueous solution inside the first piston cylinder 17 to enter the second piston cylinder 26 along the hose 10. This causes the second piston rod 25 to move away from the second piston cylinder 26, causing the second spur rack 27 to rotate the gear ring 28. The pawl 29 unidirectionally limits the ratchet 30, preventing the gear ring 28 from relative to the ratchet 30. The telescopic cylinder 21 rotates to bend the suspension porcelain insulator. When the telescopic cylinder 21 retracts, the water solution inside the second piston cylinder 26 is extracted through the cooperation of the first piston cylinder 17 and the first piston rod 20. This causes the second piston rod 25 to drive the second spur rack 27 to move towards the second piston cylinder 26. At this time, when the second spur rack 27 pushes the gear ring 28 to rotate in the opposite direction, the ratchet 30 will rotate synchronously with the gear ring 28 under the action of the pawl 29. This causes the worm gear 15 to drive the worm wheel 14 to rotate. The rotation of the worm wheel 14 causes the tension sensor 23 to rotate, which in turn causes the mounting base 24 to drive the suspension porcelain insulator to rotate. Thus, the repeated extension and retraction of the telescopic cylinder 21 can cause the suspension porcelain insulator to bend in different directions, improving the accuracy of the detection data.

[0047] S4: After the test is completed, the controller 4 controls the operation of the servo motor 5 to restore the telescopic cylinder 21, thereby restoring the swing rod 8 and the movable guide block 13. Then, the suspended porcelain insulator that has been tested is removed.

[0048] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A testing device for suspension porcelain insulators, comprising a mounting platform (1), characterized in that, The top of the mounting platform (1) is fixedly connected to an H-shaped connecting frame (2). A first positioning block (3) is connected to the top of one end of the H-shaped connecting frame (2). A controller (4) is provided on the top of the first positioning block (3). A swing rod (8) is rotatably connected to both sides of the first positioning block (3) via a rotating shaft. A movable guide block (13) is movably sleeved on the swing rod (8). An adjustable traction component connected to the movable guide block (13) is provided at one end of the first positioning block (3). A second positioning block (9) is installed on one side of the movable guide block (13). A tension sensor (23) is rotatably connected to the side of the second positioning block (9) near the first positioning block (3) via a rotating shaft. (23) A mounting base (24) is installed on the side away from the second positioning block (9). The other end of the tension sensor (23) is provided with a bending detection component connected to the adjustable traction component. The bending detection component includes a telescopic cylinder (21) installed inside the H-shaped connecting frame (2). The output end of the telescopic cylinder (21) is connected to a movable frame (18). The two sides of the H-shaped connecting frame (2) are fixedly connected to a first piston cylinder (17) located inside the movable frame (18). A first piston rod (20) extending to the bottom of the first piston cylinder (17) is inserted into the inside of the first piston cylinder (17). The bottom end of the first piston rod (20) is connected to the bottom of the movable frame (18). The bottom of (17) is provided with a telescopic spring (19) connected to the first piston rod (20), the top of the movable frame (18) is provided with a first spur rack (16), and one end of the rotating shaft of the swing rod (8) connected to the first positioning block (3) is provided with a transmission spur gear (7) meshing with the first spur rack (16); the bending detection component also includes a second piston cylinder (26) installed on the top of the second positioning block (9), and a second piston rod (25) extending to the outside of the second piston cylinder (26) is inserted inside the second piston cylinder (26), and one end of the second piston rod (25) is provided with a second spur rack (27), and the second positioning block (9) is connected to the tension sensor (23). A worm gear (14) is provided at one end of the rotating shaft. A worm (15) that meshes with the worm gear (14) is rotatably connected to one side of the second positioning block (9) via the rotating shaft. A ratchet (30) is fixedly connected to one end of the worm (15). A gear ring (28) located outside the ratchet (30) is rotatably connected to one end of the worm (15) via a bearing. A pawl (29) that meshes with the ratchet (30) is rotatably connected to the inner wall of the gear ring (28) via the rotating shaft. The second spur rack (27) meshes with the outer wall of the gear ring (28). A hose (10) connected to the top side of the first piston cylinder (17) is provided at the end of the second piston cylinder (26) away from the second piston rod (25). The pawl (29) limits the ratchet (30) in one direction, preventing the gear ring (28) from rotating relative to the ratchet (30). This allows the suspension porcelain insulator to bend. When the telescopic cylinder (21) retracts, the first piston cylinder (17) and the first piston rod (20) work together to extract the aqueous solution inside the second piston cylinder (26). The second piston rod (25) drives the second rack (27) to move toward the second piston cylinder (26). When the second rack (27) pushes the gear ring (28) to rotate in the opposite direction, the ratchet (30) will rotate synchronously with the gear ring (28) under the action of the pawl (29). This causes the worm (15) to drive the worm wheel (14) to rotate. The rotation of the worm wheel (14) causes the tension sensor (23) to rotate. This allows the mounting base (24) to drive the suspension porcelain insulator to rotate.

2. The suspension porcelain insulator testing device according to claim 1, characterized in that, The number of the positioning rods (8) is set to two, and the two positioning rods (8) are symmetrically arranged along the vertical central axis of the first positioning block (3).

3. The suspension porcelain insulator testing device according to claim 1, characterized in that, The adjustable traction component includes a servo motor (5) installed on the top of the H-shaped connecting frame (2) away from the controller (4). The output end of the servo motor (5) is connected to an adjustable lead screw (6), and the end of the adjustable lead screw (6) away from the servo motor (5) is rotatably connected to the first positioning block (3) through a bearing. A threaded sleeve (11) is movably sleeved on the outside of the adjustable lead screw (6). The side of the threaded sleeve (11) close to the first positioning block (3) is rotatably connected to a positioning guide block (22) through a rotating shaft. One end of the positioning guide block (22) is rotatably connected to a diagonal connecting rod (12) through a rotating shaft. The end of the diagonal connecting rod (12) away from the positioning guide block (22) is rotatably connected to a movable guide block (13) through a rotating shaft.

4. The suspension porcelain insulator testing device according to claim 3, characterized in that, The inner side of the threaded sleeve (11) is provided with a threaded hole that matches the adjusting screw (6).

5. The suspension porcelain insulator testing device according to claim 3, characterized in that, The center of the rotating shaft connecting the positioning guide block (22) and the threaded sleeve block (11), and the positioning rod (8) and the first positioning block (3) are coaxial.

6. The suspension porcelain insulator testing device according to claim 1, characterized in that, The pawl (29) is connected to the inner wall of the gear ring (28) by a torsion spring on the outside of the shaft through a slot.

7. The suspension porcelain insulator testing device according to claim 6, characterized in that, The first piston cylinder (17) and the second piston cylinder (26) are connected by a hose (10). The inner diameter of the first piston cylinder (17) is larger than the inner diameter of the second piston cylinder (26). The internal volumes of the first piston cylinder (17) and the second piston cylinder (26) are equal.

8. A method for testing suspension porcelain insulators, characterized in that, The suspension porcelain insulator testing device according to any one of claims 1-7 includes the following steps: S1: First connect both ends of the suspension porcelain insulator to the mounting base (24), and then control the adjustable traction component to operate through the controller (4). At this time, the mounting base (24) will pull the two ends of the suspension porcelain insulator to pull the insulator to a horizontal state. S2: The adjustable traction component continues to operate, and the tension sensor (23) calculates the tension on the insulator by continuously pulling the suspension porcelain insulator through the mounting base (24). Then, it judges whether the insulator is qualified under the specified tension based on whether the insulator is damaged. S3: Then the bending detection component is controlled by the controller (4) to operate. At this time, the swing rod (8) will rotate relative to the first positioning block (3) to make the insulator bend. During this process, the force sensor (23) detects the force on the insulator when it bends. S4: After the test is completed, the controller (4) controls the operation of the bending test piece and the pitch traction piece to restore the swing rod (8) and the movable guide block (13), and then remove the suspended porcelain insulator that has been tested.

Images