On-load tap changer mechanical vibration detection simulation device and detection method

Abstract

This invention provides a simulation device and method for mechanical vibration detection of on-load tap changers, relating to the technical field of vibration detection equipment for on-load tap changers. The device includes a base plate, a working plate, a fixed plate, a crossbar, a push block, a movable frame, and a connecting rod. A drive motor rotates a disc, on which a crossbar is mounted. A push block is mounted on the crossbar and can be fixed at a certain position on the crossbar. The push block has a movable frame, the width of which is greater than or equal to the diameter of the disc, providing space for the push block to move. Simultaneously, the movable frame drives the connecting rod to move, thereby moving the working plate and thus performing vibration detection on the workpiece. Users can also adjust the position of the push block to change the vibration amplitude, increasing or decreasing it. For example, by adjusting the position of the push block, the vibration of the working plate can be adjusted, which is convenient and quick.

Description

Technical Field

[0001] This invention relates to the field of on-load tap changer vibration testing equipment, and in particular to an on-load tap changer mechanical vibration testing simulation device and testing method. Background Technology

[0002] On-load tap changers are an important part of power systems. When in use, they can regulate the output voltage of transformers and stabilize the load voltage in the power system, optimizing the overall operation of the power system and grid. In addition, they can also prevent equipment damage during operation, thereby extending the service life of the equipment.

[0003] The stability of on-load tap changers directly affects the operation of transformers. Therefore, vibration testing of on-load tap changers is necessary during their use. Vibration testing of on-load tap changers can assess their condition, thereby optimizing maintenance plans and improving the efficiency of staff. Mechanical vibration testing simulation devices are required for on-load tap changer vibration testing.

[0004] Chinese Patent Application No. CN202410327501.4, filed on March 21, 2024, discloses a bearing radial vibration detection device and method. The device includes a main body with adjustable support feet at each of the four corners of its bottom. Rollers are mounted on one side of each adjustable support foot. A propulsion mechanism for horizontal displacement of the bearing is mounted on the upper surface of the main body. A clamping mechanism for fixing the bearing inner ring is rotatably mounted on the propulsion mechanism. A conveying mechanism for loading and unloading the bearing is located at the bottom of the clamping mechanism. A monitoring mechanism for radial vibration detection of the bearing is located on one side above the clamping mechanism. This technology can effectively adapt to the stable clamping and detection of the inner wall of bearings of different specifications and can simultaneously protect the bearing from both inside and outside, preventing the risk of the bearing flying off during high-speed rotation.

[0005] After clamping the workpiece, the vibration intensity needs to be adjusted during use to obtain accurate test results. However, the device in the above application does not have a structure for rapid adjustment of the detection intensity, resulting in inaccurate test results and causing unnecessary trouble in the testing process. Summary of the Invention

[0006] The purpose of this invention is to provide a simulation device and method for detecting mechanical vibration of on-load tap changers, thereby solving the technical problem of inconvenience in determining the amplitude of workpiece vibration in existing technologies. The various technical effects of the preferred solutions among the many technical solutions provided by this invention are detailed below.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] The present invention provides a mechanical vibration detection simulation device for on-load tap changers, comprising:

[0009] The system comprises a base plate, a work plate, and a fixed plate. A bracket is fixedly connected to the lower surface of the base plate, and a drive motor is bolted to the lower surface of the base plate. A disc is fixedly connected to the output end of the drive motor to drive the disc to rotate. The work plate is mounted on the upper surface of the base plate, and the disc is placed on the base plate to drive the work plate to move. The fixed plate is mounted on the work plate through an adjustment assembly to adjust the position of the fixed plate.

[0010] A crossbar is fixedly connected to the inner wall of the disc, and a pushing block is slidably disposed on the surface of the crossbar. A movable frame is sleeved on the surface of the pushing block, and a connecting rod is fixedly connected to the surface of the movable frame. Under the drive of the disc, the connecting rod is driven to move, and the connecting rod is connected to the working plate.

[0011] A limiting component that fixes the push block to the crossbar.

[0012] Preferably, the limiting component includes a locking block, a connecting block, and a first spring. The upper surface of the crossbar has a locking groove corresponding to the locking block, and the locking grooves are evenly distributed on the upper surface of the crossbar. The end of the locking block is spherical. The locking block is slidably disposed inside the pushing block. The connecting blocks are fixedly connected to both the left and right sides of the locking block. The upper surface of the connecting block is fixedly connected to the first spring, which plays an elastic reset role. The other side of the first spring is fixedly connected to the inner wall of the pushing block.

[0013] Preferably, it also includes a vertical connecting plate, which is fixed to the upper surface of the base plate by bolts. An inner rod is installed on one side of the vertical connecting plate, and the inner rods are symmetrically distributed about the center of the vertical connecting plate. The side of the working plate is provided with a through hole for the inner rod to pass through. A second spring is sleeved on the upper part of the inner rod, and one end of the second spring is fixed to one side of the vertical connecting plate. The other side of the second spring can abut against the working plate to accumulate elastic force.

[0014] Preferably, a guide block is fixedly connected to the upper surface of the base plate, the connecting rod passes through the interior of the guide block, and the end of the connecting rod is fixedly connected to the surface of the working plate.

[0015] Preferably, the adjustment assembly includes a threaded rod and an external block. The threaded rod is rotatably disposed inside the working plate, and the external block is threadedly connected to the surface of the threaded rod. The external block is installed on the outer wall of the fixed plate. The fixed plate is provided in two locations and is symmetrically distributed about the center of the working plate. The threads on the left and right sides of the threaded rod have opposite directions of rotation, so that the fixed plates can move closer to or further apart from each other.

[0016] Preferably, the adjustment assembly further includes a limiting rod, which is fixedly installed inside the working plate and parallel to the threaded rod, and the limiting rod passes through the interior of the outer block.

[0017] Preferably, it also includes an alarm component, the alarm component comprising:

[0018] The long pin is provided with an overlapping block on the side of the vertical connecting plate away from the working plate, and the long pin is rotatably mounted on the overlapping block;

[0019] A gear and rack assembly, wherein a rack of the gear and rack assembly is fixedly connected to the surface of the working plate away from the disk, and a gear of the gear and rack assembly that meshes with the rack is fixedly connected to the surface of the long pin, and the rotation of the gear drives the long pin to rotate.

[0020] A force-bearing plate, wherein a connecting column is fixedly connected to the surface of the force-bearing plate, and the connecting column passes through the interior of the vertical connecting plate, and a long plate is fixedly connected to the end of the connecting column, and a third spring is provided between the force-bearing plate and the vertical connecting plate, the third spring enabling the force-bearing plate to move away from the vertical connecting plate;

[0021] A push cam is mounted on the long pin and driven by the long pin to strike the force plate, causing the force plate to move towards the vertical docking plate.

[0022] A striking block, which is fixedly connected to the inner wall of the long plate;

[0023] A clicker is fixedly connected to the surface of the vertical docking plate, and the long plate moves away from the surface of the vertical docking plate under the action of the connecting column. When the pushing cam moves away from the force plate, the long plate drives the striking block to strike the clicker under the action of elastic force.

[0024] Preferably, the striking blocks are evenly distributed on the surface of the long plate.

[0025] Preferably, it also includes an auxiliary rolling ball, which is rotatably disposed on the lower surface of the working plate.

[0026] This application also provides a detection method for an on-load tap changer mechanical vibration detection simulation device, which includes the following steps:

[0027] S1: Install the on-load tap changer on the work plate, adjust the threaded rod on the adjustment assembly, the threaded rod and the limiting rod of the adjustment assembly cooperate to drive the external block on the adjustment assembly to move to the middle position of the work plate, so that the fixing plates on both sides clamp and fix the workpiece.

[0028] S2: Start the drive motor, which drives the disc and the push block to rotate. The rotation of the push block drives the movable frame to reciprocate linearly in the horizontal direction, so that the connecting rod connected to the movable frame drives the working plate to reciprocate linearly in the horizontal direction, so that the working plate is in a state of vibration.

[0029] S3: When the working plate moves, the working plate drives the rack to move, which in turn drives the gear meshing with the rack to rotate. The rotation of the gear drives the long pin to rotate, so that the push cam on the long pin rotates, thereby intermittently pushing the force plate. The force plate drives the connecting column to slide inside the vertical docking plate, so that the third spring is squeezed. After the push cam moves away from the force plate, the force plate and the connecting column return to their original positions under the action of the third spring, so that the striking block on the surface of the long plate intermittently strikes the clicker, thereby the clicker intermittently emits a sound.

[0030] The technical solution provided in this application document has the following beneficial effects:

[0031] This invention provides a simulation device and method for detecting mechanical vibration of an on-load tap changer. The simulation device includes a base plate, a working plate, and a fixed plate. A bracket is fixedly connected to the lower surface of the base plate, providing support for the bottom edge. A drive motor is bolted to the lower surface of the base plate, and a disc is fixedly connected to the output end of the drive motor to drive the disc to rotate. The working plate is mounted on the upper surface of the base plate, and the disc is placed on the base plate. The disc is used to drive the working plate on the base plate to reciprocate. The fixed plate is mounted on the working plate through an adjustment assembly to adjust the position of the fixed plate so that the fixed plate can clamp the workpiece.

[0032] To facilitate the movement of the disc driving the work plate, a crossbar is also included. The crossbar is fixedly connected to the inner wall of the disc, and a push block is slidably provided on the surface of the crossbar. A movable frame is sleeved on the surface of the push block, and a connecting rod is fixedly connected to the surface of the movable frame. Driven by the disc, the connecting rod moves and is connected to the work plate. People can adjust the position of the push block according to the actual situation, thereby increasing or decreasing the vibration of the drive motor on the workpiece.

[0033] In order to limit the position of the push block, the limiting component restricts the push block to the crossbar to prevent it from moving during operation.

[0034] Specifically, a drive motor rotates a disc, which has a crossbar on it. A push block is mounted on the crossbar and can be fixed at a certain position on the crossbar. The push block has a movable frame, the width of which is greater than or equal to the diameter of the disc, providing space for the push block to move. At the same time, the movable frame drives a connecting rod to move, thereby moving the workpiece to perform vibration detection. Users can also adjust the position of the push block to change the vibration amplitude, increasing or decreasing it. For example, by adjusting the position of the push block, the vibration of the workpiece can be adjusted, which is convenient and quick. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram illustrating the structure of an on-load tap changer mechanical vibration detection simulation device according to an exemplary embodiment;

[0037] Figure 2 This is a schematic diagram illustrating the connection structure between the threaded rod and the external block according to an exemplary embodiment;

[0038] Figure 3 This is a schematic diagram illustrating the distribution state structure of the auxiliary rolling ball according to an exemplary embodiment.

[0039] Figure 4 This is a schematic diagram illustrating the connection structure between the push block and the movable frame according to an exemplary embodiment;

[0040] Figure 5 This is a schematic diagram illustrating the working state structure of a disk according to an exemplary embodiment;

[0041] Figure 6This is a schematic diagram illustrating the card slot distribution structure according to an exemplary embodiment;

[0042] Figure 7 yes Figure 6 Enlarged structural diagram at point A in the middle;

[0043] Figure 8 This is a schematic diagram illustrating the working state structure of the push block according to an exemplary embodiment;

[0044] Figure 9 This is a schematic diagram illustrating a long pin and gear connection structure according to an exemplary embodiment;

[0045] Figure 10 yes Figure 9 Enlarged structural diagram at point B;

[0046] Figure 11 This is a schematic diagram illustrating the working state of the driven cam according to an exemplary embodiment.

[0047] In the diagram: 1. Base plate; 2. Drive motor; 3. Working plate; 4. Threaded rod; 5. Fixing plate; 6. External block; 7. Limiting rod; 8. Auxiliary rolling ball; 9. Disc; 10. Pushing block; 11. Movable frame; 12. Connecting rod; 13. Guide block; 14. Horizontal bar; 15. Vertical connecting plate; 16. Locking block; 17. Locking groove; 18. Connecting block; 19. First spring; 20. Overlapping block; 21. Long pin; 22. Gear; 23. Rack; 24. Pushing cam; 25. Inner rod; 26. Second spring; 27. Force plate; 28. Connecting column; 29. ​​Third spring; 30. Long plate; 31. Striking block; 32. Clicker. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0049] This specific embodiment provides a simulation device and method for detecting mechanical vibration of on-load tap changers, in order to solve the technical problem of inconvenience in measuring the amplitude of workpiece vibration in the prior art.

[0050] Hereinafter, embodiments will be described with reference to the accompanying drawings. Furthermore, the embodiments shown below do not limit the scope of the invention as described in the claims. Additionally, the complete contents of the configurations represented in the embodiments below are not limited to those necessary for the solution of the invention described in the claims.

[0051] Reference Figures 1-11 This invention provides a simulation device for mechanical vibration detection of on-load tap changers, including a base plate 1, a working plate 3, and a fixed plate 5. A bracket is fixedly connected to the lower surface of the base plate 1, providing support for the base plate 1. A drive motor 2 is bolted to the lower surface of the base plate 1, and a disc 9 is fixedly connected to the output end of the drive motor 2 to drive the disc 9 to rotate. The working plate 3 is installed on the upper surface of the base plate 1, and the disc 9 is placed on the base plate 1. The disc 9 is used to drive the working plate 3 on the base plate 1 to reciprocate. The fixed plate 5 is installed on the working plate 3 through an adjustment assembly to adjust the position of the fixed plate 5 so that the fixed plate 5 can clamp the workpiece.

[0052] To facilitate the movement of the working plate 3 driven by the disc 9, a crossbar 14 is also included, such as... Figure 4 As shown, the crossbar 14 is fixedly connected to the inner wall of the disc 9, and a push block 10 is slidably provided on the surface of the crossbar 14. A movable frame 11 is sleeved and connected to the surface of the push block 10, and a connecting rod 12 is fixedly connected to the surface of the movable frame 11. Under the drive of the disc 9, the connecting rod 12 is driven to move. The connecting rod 12 is connected to the working plate 3. People can adjust the position of the push block 10 according to the actual situation, thereby increasing or decreasing the vibration of the workpiece by the drive motor 2.

[0053] In order to limit the position of the push block 10, the limiting component limits the push block 10 to the crossbar 14 to prevent it from moving during operation.

[0054] Specifically, the drive motor 2 drives the disc 9 to rotate. A crossbar 14 is provided on the disc 9, and a push block 10 is provided on the crossbar 14. The push block 10 can be fixed at a certain position on the crossbar 14. The push block 10 is provided with a movable frame 11. The width of the movable frame 11 is greater than or equal to the diameter of the disc 9, providing space for the push block 10 to move. At the same time, the movable frame 11 drives the connecting rod 12 to move, thereby driving the work plate 3 to move, and thus performing vibration detection on the workpiece. People can also adjust the position of the push block 10 as needed, thereby changing the vibration amplitude and increasing or decreasing the vibration amplitude.

[0055] To further optimize the design and facilitate the adjustment of the position of the push block 10, the limiting component includes a locking block 16, a connecting block 18, and a first spring 19. The upper surface of the crossbar 14 is provided with a locking groove 17 corresponding to the locking block 16, and the locking grooves 17 are evenly distributed on the upper surface of the crossbar 14. The end of the locking block 16 is spherical, making it easy for people to pull out the locking block 16. The locking block 16 can be slidably disposed inside the push block 10, that is, the push block 10 is provided with an installation cavity. Specifically, the installation cavity includes a first cavity and a second cavity, wherein the first cavity is used to install the locking block 16, and the second cavity is used to install the connecting block 18 and the first spring 19. The locking block 16 is fixedly connected to connecting blocks 18 on both its left and right sides. A first spring 19, which plays an elastic reset role, is fixedly connected to the upper surface of the connecting block 18. The other side of the first spring 19 is fixedly connected to the inner wall of the push block 10. When people need to adjust the position, the locking block 16 is pulled outward. The first spring 19 is compressed and continues to exert its elastic force. The locking block 16 is disengaged from the slot 17 on the crossbar 14, making it convenient for people to move the push block 10 and adjust its position. After people release it, under the action of the first spring 19, the locking block 16 is inserted into the slot 17 to fix the locking block, thereby fixing the push block 10.

[0056] Further optimization of the scheme: A vertical connecting plate 15 is fixed to the upper surface of the base plate 1 by bolts. An inner rod 25 is installed on one side of the vertical connecting plate 15, and the inner rod 25 is symmetrically distributed about the center of the vertical connecting plate 15. A working plate 3 is sleeved and connected to the surface of the inner rod 25, and a second spring 26 is installed on one side of the vertical connecting plate 15. The second spring 26 is connected to the working plate 3. When the working plate 3 moves toward the vertical connecting plate 15, the second spring 26 is subjected to compressive force, thereby accumulating elastic force. When the working plate moves away from the vertical connecting plate 15, the second spring 26 returns to its original state, pushing the working plate away from the vertical connecting plate 15.

[0057] To further optimize the design, a guide block 13 is fixedly connected to the upper surface of the base plate 1 to facilitate the support of the connecting rod 12. The connecting rod 12 passes through the interior of the guide block 13. Since the movable frame 11 is long and has a large range of motion, the guide block 13 provides support for the connecting rod 12 to stabilize it. The end of the connecting rod 12 is fixedly connected to the surface of the working plate 3 to drive the working plate 3 to move.

[0058] During the inspection process, the inspection device needs to inspect workpieces of different sizes. If the device cannot quickly clamp different workpieces, it will result in a small overall range of use and greater limitations in its use, which means that the overall flexibility of the device is low.

[0059] Chinese Patent Application No. CN202210760628.6, filed on June 30, 2022, discloses a vibration resistance testing device. The device includes a base disposed on the underside of the device, with casters fixedly mounted at the four corners of its lower surface. Support mechanisms are fixedly mounted at the middle of the side walls on both sides of the base. The support mechanisms include fixed seats fixed to the side walls of the base and hydraulic cylinders mounted on the fixed seats; a limiting mechanism fixedly mounted on both sides of the upper surface of the base, comprising limiting posts fixedly connected to the upper surfaces of both sides of the base and limiting plates fixedly mounted on the limiting posts; and two clamping mechanisms. The clamping mechanism is symmetrically installed on both sides of the upper surface of the support plate. The support plate has through holes on both sides, and the clamps slide onto the limiting posts on both sides of the base. The clamping mechanism includes a fixing block fixed to the upper surface of the support plate and a nut fixed to one side wall of the fixing block. Two vibration mechanisms are provided and fixedly installed between the base and the support plate. Each vibration mechanism includes a motor fixed to the upper surface of the base via a support rod and an irregular cam connected to the output end of the motor. A buffer mechanism is fixedly installed at the center of the upper surface of the base and includes a support column fixed to the center of the upper surface of the base and a U-shaped seat connected to the upper end of the support column. In use, this technology, by setting up the clamping mechanism, can fix objects of different sizes, expanding its detectable range. However, the above adjustments are relatively cumbersome and inconvenient.

[0060] To further optimize the design and facilitate the adjustment of the position of the fixed plate 5, the adjustment assembly includes a threaded rod 4 and an external block 6. The threaded rod 4 is rotatably mounted inside the working plate 3, and the surface of the threaded rod 4 is threadedly connected to the external block 6. The external block 6 is installed on the outer wall of the fixed plate 5. The fixed plate 5 has two fixed plates symmetrically distributed about the center of the working plate 3. The threads on the left and right sides of the threaded rod 4 have opposite directions of rotation, so that the fixed plates 5 can move closer to or further away from each other. In this way, when the operator rotates the threaded rod 4 in one direction, the threaded rod 4 can simultaneously drive the two fixed plates 5 to move towards each other or in opposite directions, thereby clamping different workpieces.

[0061] To further optimize the design, in order to ensure that the limiting rod 7 can move in parallel as a whole, the adjustment assembly also includes a limiting rod 7. The limiting rod 7 is fixedly installed inside the working plate 3 and parallel to the threaded rod 4. The limiting rod 7 passes through the interior of the outer block 6. Since the outer block 6 is installed on both the threaded rod 4 and the limiting rod 7, it can provide good support for the outer block 6.

[0062] Chinese Patent Application No. CN202410327501.4, filed on March 21, 2024, discloses a bearing radial vibration detection device and method. The device includes a main body with adjustable support feet at each of the four corners of its bottom. Rollers are mounted on one side of each adjustable support foot. A propulsion mechanism for horizontal displacement of the bearing is mounted on the upper surface of the main body. A clamping mechanism for fixing the bearing inner ring is rotatably mounted on the propulsion mechanism. A conveying mechanism for loading and unloading the bearing is located at the bottom of the clamping mechanism. A monitoring mechanism for radial vibration detection of the bearing is located on one side above the clamping mechanism. This technology can effectively adapt to the stable clamping and detection of the inner wall of bearings of different specifications and can simultaneously protect the bearing from both inside and outside, preventing the risk of the bearing flying off during high-speed rotation.

[0063] After clamping the workpiece, the vibration intensity needs to be adjusted during use to obtain accurate test results. However, the device in the above application does not have a structure for rapid adjustment of the detection intensity, resulting in inaccurate test results and causing unnecessary trouble in the testing process. At the same time, the device is in working condition, and the staff needs to stay away from the equipment. However, the device in the above application does not have a warning structure during use, which may lead to accidental injury to the staff.

[0064] Further optimization of the scheme also includes an alarm device, wherein the alarm device includes a long pin 21, and an overlapping block 20 is provided on the side of the vertical docking plate 15 away from the working plate 3, and the long pin 21 is rotatably mounted on the overlapping block 20.

[0065] The gear and rack assembly has a rack 23 fixedly connected to the surface of the working plate 3 away from the disk 9, and a gear 22 of the gear and rack assembly that meshes with the rack 23 is fixedly connected to the surface of the long pin 21. The rotation of the gear 22 drives the long pin 21 to rotate.

[0066] The force-bearing plate 27 has a connecting column 28 fixedly connected to its surface, and the connecting column 28 passes through the interior of the vertical docking plate 15. The end of the connecting column 28 is fixedly connected to a long plate 30. A third spring 29 is provided between the force-bearing plate 27 and the vertical docking plate 15. The third spring 29 can cause the force-bearing plate 27 to move away from the vertical docking plate 15.

[0067] The push cam 24 is mounted on the sleeve fixed to the long pin 21, and under the drive of the long pin 21, the push cam 24 can strike the force plate 27, causing the force plate 27 to move in the direction of the vertical docking plate 15.

[0068] Striking block 31 is fixedly connected to the inner wall of long plate 30;

[0069] The clicker 32 is fixedly connected to the surface of the vertical docking plate 15, and the long plate 30 moves away from the surface of the vertical docking plate 15 under the action of the connecting column 28. When the cam 24 is pushed away from the force plate 27, the long plate 30 drives the striking block 31 to strike the clicker 32 under the action of the elastic force.

[0070] Specifically, when the working plate 3 moves, it drives the rack 23 to move. Since the gear 22 meshes with the rack 23, the rotation of the gear 22 drives the push cam 24 on the long pin 21 to move. The push cam 24 pushes the force plate 27 to move, the force plate 27 drives the connecting column 28 to move, and the movement of the connecting column 28 drives the long plate 30 to move. Because the long plate 30 is equipped with a striking block 31 and the vertical connecting plate 15 is equipped with a clicker 32, when the connecting column 28 moves, the third spring 29 accumulates elastic force. Subsequently, as the push cam 24 moves away from the force plate 27, the force plate 27 moves away from the vertical connecting plate 15 under the action of the first elastic force, causing the striking block 31 on the long plate 30 to collide with the clicker 32, thus achieving one reciprocating motion of the working plate 3. This design reminds workers to stay away from the base plate 1 to avoid accidental injury.

[0071] The design was further optimized so that the striking blocks 31 are evenly distributed on the surface of the long plate 30, which makes it easier for the clicker 32 to be subjected to uniform force.

[0072] To further optimize the design and ensure the smooth movement of the work plate 3, an auxiliary rolling ball 8 is included, which is rotatably mounted on the lower surface of the work plate 3.

[0073] This application provides a further optimization scheme, including the following steps;

[0074] S1: Install the on-load tap changer on the work plate 3, adjust the threaded rod 4 on the adjustment assembly, the threaded rod 4 and the limit rod 7 of the adjustment assembly cooperate to drive the external block 6 on the adjustment assembly to move to the middle position of the work plate 3 so that the fixing plates 5 on both sides clamp and fix the workpiece.

[0075] S2: Start the drive motor 2. The drive motor 2 drives the disc 9 and the push block 10 to rotate. The rotation of the push block 10 drives the movable frame 11 to reciprocate linearly in the horizontal direction, so that the connecting rod 12 connected to the movable frame 11 drives the working plate 3 to reciprocate linearly in the horizontal direction, so that the working plate 3 is in a state of vibration.

[0076] S3: When the working plate 3 moves, the working plate 3 drives the rack 23 to move, which in turn drives the gear 22 meshing with the rack 23 to rotate. The rotation of the gear 22 drives the long pin 21 to rotate, so that the push cam 24 on the long pin 21 rotates, which in turn pushes the force plate 27 intermittently. The force plate 27 drives the connecting column 28 to slide inside the vertical docking plate 15, so that the third spring 29 is squeezed. After pushing the cam 24 away from the force plate 27, the force plate 27 and the connecting column 28 return to their original positions under the action of the third spring 29, so that the striking block 31 on the surface of the long plate 30 intermittently strikes the clicker 32, and the clicker 32 intermittently emits a sound.

[0077] This on-load tap changer mechanical vibration detection simulation device and method adopts a novel structural design, allowing the fixed plate to slide on the working plate, thereby clamping workpieces of different sizes, expanding the overall applicability of the device and improving its flexibility. Simultaneously, the push block and movable frame drive the connecting rod and working plate to perform reciprocating linear motion in the horizontal direction to detect workpiece vibration. During the detection process, the striking block repeatedly strikes the clicker, which serves as an audible warning, keeping personnel away from the device and preventing accidental injury, thus improving the overall safety of the device. The specific details are as follows, and this application document has the following beneficial effects:

[0078] (1) When using the on-load tap changer mechanical vibration detection simulation device, the on-load tap changer needs to be installed on the device first. The specific operation is to first place the on-load tap changer on the working plate, and then rotate the threaded rod. The threaded rod is threadedly connected to the outer block. Then, under the action of the threaded rod and the limit rod, the outer block moves to the middle position of the working plate. Finally, the working plates on the left and right sides clamp and fix the workpiece. The operation process is quick and convenient. It can quickly clamp workpieces of different sizes, improve flexibility, and reduce limitations.

[0079] Furthermore, during the testing process, the drive motor is started, which drives the disc and push block to rotate. At this time, the connecting rod, under the action of the inner rod on the working plate, makes reciprocating linear motion in the horizontal direction, and then the working plate performs vibration detection on the workpiece. In this process, the second spring plays an auxiliary role in returning to its original position.

[0080] Furthermore, when it is necessary to adjust the vibration intensity, the locking block inside the push block can be pulled to move the end of the locking block out of the slot. Then, the push block can be moved to slide on the crossbar. When the locking block moves to the desired position, the locking block can be released. At this time, the locking block enters the slot under the action of the connecting block and the first spring, which changes the position of the push block to the center, thereby changing the displacement distance of the connecting rod, and finally changing the vibration amplitude of the working plate. This allows for rapid adjustment of the vibration magnitude, making the device more flexible and the detection results more accurate.

[0081] (2) When the working plate moves, the working plate can drive the rack to move synchronously. When the rack moves, it will drive the long pin to rotate inside the overlapping block through the gear. At this time, the push cam will intermittently push the force plate. Then, under the action of the thrust, the third spring and the long bar, the force plate will make reciprocating linear motion in the horizontal direction. At this time, the force plate drives the long plate and the striking block to move synchronously. Then, the striking block can hit the clicker repeatedly, making the clicker make a sound. The clicker plays the role of sound warning, keeping the staff away from the device and preventing accidental injury to the staff, thus improving the overall safety of the device.

[0082] Furthermore, when the working plate moves, it drives the rack to perform reciprocating linear motion synchronously. When the rack performs reciprocating linear motion, the long pin will rotate back and forth under the action of the rack and gear. The reciprocating linear motion of the long pin drives the push cam to rotate back and forth. The reciprocating rotation of the push cam will not affect the work of the force plate. Thus, when the working plate moves, the force plate will always be in the working state, ensuring the smooth operation of the entire device.

[0083] (3) The mechanical vibration detection simulation device for on-load tap changer has the striking blocks evenly distributed on the surface of the long plate, which optimizes the striking effect and allows the clicker to work better.

[0084] It should be noted that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., used herein to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing the 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 the invention. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0085] In the description herein, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0086] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

[0087] It is understood that the same or similar parts in the above embodiments can be referred to each other, and the content not described in detail in some embodiments can be referred to the same or similar content in other embodiments. The multiple solutions provided in this application contain their own basic solutions, are independent of each other, and do not restrict each other, but they can also be combined with each other without conflict to achieve multiple effects.

[0088] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A simulation device for detecting mechanical vibration of an on-load tap changer. Its characteristics are: The system includes a base plate (1), a working plate (3), and a fixing plate (5). A bracket is fixedly connected to the lower surface of the base plate (1), and a drive motor (2) is bolted to the lower surface of the base plate (1). A disc (9) is fixedly connected to the output end of the drive motor (2) to drive the disc (9) to rotate. The working plate (3) is installed on the upper surface of the base plate (1), and the disc (9) is placed on the base plate (1) and used to drive the working plate (3) to move. The fixing plate (5) is installed on the working plate (3) through an adjustment assembly to adjust the position of the fixing plate (5). A crossbar (14) is fixedly connected to the inner wall of the disc (9), and a push block (10) is slidably provided on the surface of the crossbar (14). A movable frame (11) is sleeved and connected to the surface of the push block (10), and a connecting rod (12) is fixedly connected to the surface of the movable frame (11). Under the drive of the disc (9), the connecting rod (12) is driven to move. The connecting rod (12) is connected to the working plate (3). A limiting component that fixes the push block (10) onto the crossbar (14); It also includes a vertical connecting plate (15), which is fixed to the upper surface of the base plate (1) by bolts. An inner rod (25) is installed on one side of the vertical connecting plate (15), and the inner rod (25) is symmetrically distributed about the center of the vertical connecting plate (15). The side of the working plate (3) is provided with a through hole for the inner rod (25) to pass through. A second spring (26) is sleeved on the inner rod (25), and one end of the second spring (26) is fixed to one side of the vertical connecting plate (15). The other side of the second spring (26) can abut against the working plate (3) to accumulate elastic force. It also includes an alarm component, which includes: Long pin (21), the vertical connecting plate (15) is provided with an overlapping block (20) on the side away from the working plate (3), and the long pin (21) is rotatably mounted on the overlapping block (20). The gear rack assembly has a rack (23) fixedly connected to the surface of the working plate (3) away from the disk (9), and a gear (22) of the gear rack assembly is fixedly connected to the surface of the long pin (21) and meshes with the rack (23). The gear (22) rotates and drives the long pin (21) to rotate. A force-bearing plate (27) is fixedly connected to a connecting column (28) on its surface. The connecting column (28) passes through the interior of the vertical docking plate (15). A long plate (30) is fixedly connected to the end of the connecting column (28). A third spring (29) is provided between the force-bearing plate (27) and the vertical docking plate (15). The third spring (29) can cause the force-bearing plate (27) to move away from the vertical docking plate (15). A push cam (24) is mounted on the long pin (21) and driven by the long pin (21) to strike the force plate (27), causing the force plate (27) to move toward the vertical docking plate (15). A striking block (31) is fixedly connected to the inner wall of the long plate (30); A clicker (32) is fixedly connected to the surface of the vertical docking plate (15), and the long plate (30) moves away from the surface of the vertical docking plate (15) under the action of the connecting column (28). When the pushing cam (24) moves away from the force plate (27), the long plate (30) drives the striking block (31) to strike the clicker (32) under the action of elastic force.

2. The on-load tap changer mechanical vibration detection simulation device according to claim 1, characterized in that, The limiting component includes a locking block (16), a connecting block (18), and a first spring (19). The upper surface of the crossbar (14) is provided with a locking groove (17) corresponding to the locking block (16), and the locking grooves (17) are evenly distributed on the upper surface of the crossbar (14). The end of the locking block (16) is spherical. The locking block (16) is slidably disposed inside the push block (10). The left and right sides of the locking block (16) are fixedly connected to the connecting block (18), and the upper surface of the connecting block (18) is fixedly connected to the first spring (19) which plays an elastic reset role. The other side of the first spring (19) is fixedly connected to the inner wall of the push block (10).

3. The on-load tap changer mechanical vibration detection simulation device according to claim 1, characterized in that, A guide block (13) is fixedly connected to the upper surface of the base plate (1), and a connecting rod (12) passes through the interior of the guide block (13), with the end of the connecting rod (12) fixedly connected to the surface of the working plate (3).

4. The on-load tap changer mechanical vibration detection simulation device according to claim 1, characterized in that, The adjustment assembly includes a threaded rod (4) and an external block (6). The threaded rod (4) is rotatably disposed inside the working plate (3), and the external block (6) is threadedly connected to the surface of the threaded rod (4). The external block (6) is installed on the outer wall of the fixing plate (5). The fixing plate (5) is provided in two places and is symmetrically distributed about the center of the working plate (3). The threads on the left and right sides of the threaded rod (4) are opposite in direction, so that the fixing plates (5) can move closer to or further away from each other.

5. The on-load tap changer mechanical vibration detection simulation device according to claim 4, characterized in that, The adjustment assembly also includes a limiting rod (7), which is fixedly installed inside the working plate (3) and parallel to the threaded rod (4), and the limiting rod (7) passes through the interior of the outer block (6).

6. The on-load tap changer mechanical vibration detection simulation device according to claim 1, characterized in that, The striking blocks (31) are evenly distributed on the surface of the long plate (30).

7. The on-load tap changer mechanical vibration detection simulation device according to claim 4, characterized in that, It also includes an auxiliary rolling ball (8), which is rotatably disposed on the lower surface of the working plate (3).

8. The detection method of the on-load tap changer mechanical vibration detection simulation device according to claim 1, characterized in that: Includes the following steps; S1: Install the on-load tap changer on the working plate (3), adjust the threaded rod (4) on the adjustment assembly, the threaded rod (4) and the limiting rod (7) of the adjustment assembly cooperate to drive the external block (6) on the adjustment assembly to move to the middle position of the working plate (3) so that the fixing plates (5) on both sides clamp and fix the workpiece. S2: Start the drive motor (2), the drive motor (2) drives the disc (9) and the push block (10) to rotate, the rotation of the push block (10) drives the movable frame (11) to reciprocate linearly in the horizontal direction, so that the connecting rod (12) connected to the movable frame (11) drives the working plate (3) to reciprocate linearly in the horizontal direction, so that the working plate (3) is in a state of vibration; S3: When the working plate (3) moves, the working plate (3) drives the rack (23) to move, which in turn drives the gear (22) meshing with the rack (23) to rotate. The rotation of the gear (22) drives the long pin (21) to rotate, so that the push cam (24) on the long pin (21) rotates, and then intermittently pushes the force plate (27). The force plate (27) drives the connecting column (28) to slide inside the vertical docking plate (15), so that the third spring (29) is squeezed. After the push cam (24) moves away from the force plate (27), the force plate (27) and the connecting column (28) return to their original positions under the action of the third spring (29), so that the striking block (31) on the surface of the long plate (30) intermittently strikes the clicker (32), and then the clicker (32) intermittently emits a sound.

Images