A power equipment magnetic shielding replacement auxiliary device

Abstract

The application relates to the technical field of magnetic shielding replacement, and discloses an auxiliary device for replacing the magnetic shielding of power equipment, which comprises an upper pressing plate and a lower pressing plate directly below the upper pressing plate, the upper pressing plate and the lower pressing plate are provided with grooves in clamping surfaces, the grooves are provided with conformal clamping pads, the conformal clamping pads are composed of a bonding layer, a functional layer and an anti-skid layer, the functional layer is provided with blind holes, the blind holes are provided with piezoelectric film sensing units and neodymium-iron-boron permanent magnet units, and a floating piece is arranged between the piezoelectric film sensing units and the neodymium-iron-boron permanent magnet units. The upper pressing plate and the lower pressing plate are provided with through holes, the through holes are provided with screw rods, and the screw rods are provided at ends with nuts of embedded integrated torque sensing modules. The auxiliary device provides auxiliary adsorption force through the neodymium-iron-boron permanent magnet units, realizes conformal bonding of the whole working surface in cooperation with the floating piece, collects clamping states through the piezoelectric film sensing units, and avoids damage to silicon steel sheet laminates and surface insulating layers of the magnetic shielding plate caused by overpressure.

Description

Technical Field

[0001] This invention relates to the field of magnetic shielding replacement technology, specifically to an auxiliary device for replacing magnetic shielding in power equipment. Background Technology

[0002] During long-term operation, the internal magnetic shielding components of large power transformers and reactors are prone to aging, deformation or damage, requiring regular replacement and maintenance. The operation process places high demands on the clamping reliability, attitude control accuracy and environmental adaptability of the magnetic shielding plates.

[0003] Existing magnetic shielding clamping devices rely on purely mechanical locking structures to provide clamping force. To prevent the magnetic shielding plate from slipping and falling off during hoisting and flipping, a large locking pressure is required, which can easily cause deformation of the silicon steel sheets in the magnetic shielding plate and damage to the surface insulation layer. Existing devices rely on optical vision sensors for attitude and obstacle distance detection. In the confined, dimly lit, and oil-contaminated working environment inside a transformer tank, optical sensors are easily affected by light obstruction and oil contamination, making it impossible to obtain stable and accurate detection data. Therefore, an auxiliary device for replacing magnetic shielding in power equipment is proposed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an auxiliary device for replacing magnetic shielding in power equipment, thereby solving the technical problems of deformation of silicon steel sheet laminations and damage to the surface insulation layer of the magnetic shielding plate, as well as the inability to obtain stable and accurate test data.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an auxiliary device for replacing magnetic shielding in power equipment, comprising: The upper pressure plate and the lower pressure plate are located directly below the upper pressure plate. The clamping surfaces of the upper pressure plate and the lower pressure plate are provided with grooves. The inner cavity of each groove is provided with a convex conformal clamping pad. The conformal clamping pad is composed of an adhesive layer, a functional layer and an anti-slip layer from the outside to the inside. The inner cavity of the functional layer is uniformly provided with stepped blind holes. The inner cavity of the stepped blind holes is respectively provided with a piezoelectric thin film sensing unit and a neodymium iron boron permanent magnet unit. A floating element is provided between the piezoelectric thin film sensing unit and the neodymium iron boron permanent magnet unit. Through holes are formed around the top of the upper and lower pressure plates, and each through hole is equipped with a screw rod, with a nut threaded to the end of each screw rod. An integrated torque sensing module is installed on the outside of each nut. Lifting rings are installed on both sides of the upper pressure plate, and an explosion-proof control box is installed on the side of the upper pressure plate. Hall sensor arrays are embedded around the sides of both the upper and lower pressure plates. The telescopic arm is rotatably connected to the sides of the lower pressure plate. Each telescopic arm is driven by an independent motor installed on the lower pressure plate. A U-shaped seat is installed at the end of the telescopic arm. A folding arm is rotatably connected to the center of the U-shaped seat through a rotating shaft. A roller is rotatably connected to the end of the folding arm. An electromagnetic damping brake adapted to the roller is installed on the outside of the folding arm. An absolute angle sensor adapted to the rotating shaft and a locking component are installed on the outside of the U-shaped seat. A guide groove is opened through the center of the telescopic arm, and a lead screw is rotatably connected to the center of the guide groove. A drive motor connected to the inner wall of the guide groove is coaxially connected to the end of the lead screw. The thread on the surface of the lead screw is adapted to a guide block that slides with the inner wall of the guide groove, and a connecting rod connected to the U-shaped seat is installed on the outside of the guide block.

[0006] During operation, the magnetic shielding plate to be replaced is placed on the conformal clamping pad of the lower pressure plate, ensuring that the conformal clamping pad of the upper pressure plate is in contact with the top of the magnetic shielding plate. The magnetic attraction force generated by the neodymium iron boron permanent magnet unit assists in fixing the magnetic shielding plate, and the floating component, through elastic deformation, causes the neodymium iron boron permanent magnet unit to adaptively conform to the minute unevenness of the magnetic shielding plate surface. The screw is inserted into the through hole of the upper and lower pressure plates, and the nut is tightened to achieve mechanical clamping and fixation. During clamping, the piezoelectric thin film sensing unit collects the clamping pressure data of each zone in real time, and the integrated torque sensing module collects the locking torque data of the nut in real time. All data is transmitted to the explosion-proof control box for processing. Tightening stops when the clamping force reaches the preset threshold. The floating component includes springs, etc.

[0007] After clamping is complete, the locking mechanism is unlocked, and the folding arm is adjusted to the preset unfolding angle. The locking mechanism automatically locks the folding arm, and the absolute angle sensor collects the unfolding angle data of the folding arm in real time and transmits it to the explosion-proof control box. The drive motor drives the lead screw to rotate, and the lead screw drives the guide block to slide along the guide groove. The guide block drives the U-shaped seat to rotate through the connecting rod, thereby adjusting the extension length of the telescopic arm and ensuring stable contact between the roller and the working surface. The locking mechanism includes a ratchet and pawl automatic locking mechanism, etc.

[0008] Connect the hoisting ropes to the lifting rings and slowly lift the device. The device rotates using the rollers as a fulcrum. During rotation, the Hall effect sensor array, based on the magnetic field generated by the neodymium iron boron permanent magnet unit, collects real-time spatial attitude data and distance data from surrounding obstacles. The explosion-proof control box, based on the collected attitude, distance, and dynamic load distribution data from the piezoelectric thin-film sensor unit, controls the electromagnetic damping brake to adjust the rotational damping of the rollers, while simultaneously controlling the drive motor to fine-tune the length of the telescopic arm in real time to maintain smooth rotation. When the distance between the device and an obstacle is detected to be less than a safe threshold, the electromagnetic damping brake automatically locks the rollers, and a warning signal is issued via an external audible and visual alarm connected to the explosion-proof control box.

[0009] After the magnetic shielding plate is hoisted to the target installation position, the clamping and attitude adjustment process is reversed. The nuts are loosened and the clamping pads are released, completing the installation of the magnetic shielding plate. After the operation is completed, the drive motor is reversed to retract the telescopic arm. The locking mechanism is unlocked, the folding arm is folded to fit against the telescopic arm, and locked. The device is then stored in a dry and ventilated special toolbox.

[0010] Preferably, the inner circumferential surface of the through hole is provided with a guide groove, and the two ends of the guide groove are designed to be through.

[0011] During device assembly, the guide groove provides a through-type movement channel for the subsequently installed sliding components. During device use, the sliding components can reciprocate along the entire length of the guide groove.

[0012] Preferably, one end of the guide groove is connected to the through hole, and the other end of the guide groove is connected to the groove.

[0013] When the functional layer in the groove is squeezed and displaced, the force can be transmitted to the relevant components in the through hole through the connecting channel of the guide groove, so as to realize the linkage between the clamping action and the locking action.

[0014] Preferably, the inner cavity of the guide groove is slidably fitted with an inclined guide block, and the two sides of the inclined guide block are an inclined section and a vertical end, respectively.

[0015] When subjected to a thrust from the direction of the groove, the inclined guide block slides along the inner cavity of the guide groove towards the through hole. When the thrust disappears, the inclined guide block slides in the opposite direction along the inner cavity of the guide groove, returning to its initial position.

[0016] Preferably, the inclined section of the inclined guide block faces the inner cavity of the groove, and the vertical end of the inclined guide block faces the inner cavity of the through hole.

[0017] The thrust generated by the displacement of the functional layer acts on the inclined section of the inclined guide block, pushing the inclined guide block to move towards the through hole, so that the vertical end of the inclined guide block gradually approaches and acts on the surface of the screw.

[0018] Preferably, each of the inclined guide blocks is equipped with an anti-slip rubber pad at its vertical end, and the anti-slip rubber pad corresponds to the surface of the screw.

[0019] As the inclined guide block moves towards the through hole, the anti-slip rubber pad first contacts the surface of the screw and undergoes compression deformation. As the clamping force increases, the contact area and the degree of compression between the anti-slip rubber pad and the screw surface increase simultaneously.

[0020] Preferably, a sliding groove is provided at the top of the inner cavity of the guide groove, and the sliding groove is arranged along the length of the guide groove.

[0021] When the inclined guide block slides along the guide groove, it drives the sliding block connected to it to slide synchronously along the sliding groove. The sliding groove restricts the movement trajectory of the sliding block.

[0022] Preferably, the inner cavity of the sliding groove is slidably fitted with a sliding block, and the sliding block is connected to the top of the inclined guide block.

[0023] The sliding block reciprocates synchronously with the inclined guide block within the sliding groove.

[0024] Preferably, the inner cavity of the sliding groove is provided with a reset member, and the two ends of the reset member are respectively attached to the inner sidewall of the sliding groove and the surface of the sliding block.

[0025] When the inclined guide block slides towards the through hole, the sliding block compresses the reset component, causing the reset component to store elastic potential energy. When the clamping force disappears, the reset component releases the elastic potential energy, pushing the sliding block to slide in the opposite direction, thereby causing the inclined guide block to return to its initial position. The reset component includes a reset spring, etc.

[0026] Preferably, the four corners of the functional layer are designed with inclined push edges, and the inclined push edges are adapted to the inclined section of the inclined guide block.

[0027] When the functional layer is pressed into the groove by the magnetic shielding plate, the inclined push edges at the four corners of the functional layer simultaneously contact the inclined sections of the corresponding inclined guide blocks and apply a uniform pushing force, pushing all the inclined guide blocks to move synchronously towards the through hole.

[0028] Compared with the prior art, the present invention provides an auxiliary device for replacing the magnetic shielding of power equipment, which has the following beneficial effects: This auxiliary device for replacing the magnetic shielding of power equipment utilizes the ferromagnetic properties of the magnetic shielding plate to provide auxiliary adsorption force through the neodymium iron boron permanent magnet unit in the conformal clamping pad. Together with the floating part, it achieves conformal fitting of the entire working surface. At the same time, the piezoelectric thin film sensing unit collects the clamping status of each zone in real time, avoiding the problem of overpressure damage to the silicon steel sheet stack and surface insulation layer of the magnetic shielding plate.

[0029] The Hall sensor arrays on the sides of the upper and lower pressure plates can reuse the stable reference magnetic field generated by the neodymium iron boron permanent magnet unit. Without the need for additional magnetic field generating devices, non-contact detection of the device's spatial attitude and distance from surrounding ferromagnetic structures can be achieved, solving the industry pain point of visual monitoring failure in confined and dimly lit spaces.

[0030] The telescopic arm and folding arm, together with an absolute angle sensor and an electromagnetic damping brake, can adjust the support posture and flipping damping in real time through a screw-driven linkage structure based on the detection data of the Hall sensor array and piezoelectric thin film sensor unit, ensuring the stability and attitude controllability of the magnetic shielding plate during the flipping process.

[0031] The integrated torque sensing module and the piezoelectric thin film sensing unit form a dual clamping status monitoring system. When abnormal clamping force or slippage trend is detected, the electromagnetic damping brake and locking components can be linked to achieve emergency braking, avoiding the risk of the magnetic shielding plate falling off or hitting the equipment during the flipping process. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the groove and its connection structure of the present invention; Figure 3 This is a cross-sectional view of the through hole and guide groove of the present invention and a schematic diagram of their connection structure; Figure 4 This is a schematic diagram of the sectional structure of the conformal clamping pad of the present invention. Figure 5 This is a schematic diagram of the telescopic arm and its connecting structure of the present invention; Figure 6 This is a schematic diagram of the structure of the telescopic arm and folding arm of the present invention.

[0033] In the diagram: 1. Upper pressure plate; 2. Lower pressure plate; 3. Groove; 4. Conformal clamping pad; 5. Through hole; 6. Screw; 7. Nut; 8. Integrated torque sensing module; 9. Lifting ring; 10. Adhesive layer; 11. Functional layer; 12. Anti-slip layer; 13. Stepped blind hole; 14. Piezoelectric thin film sensing unit; 15. Neodymium iron boron permanent magnet unit; 16. Angled push edge; 17. Explosion-proof control box; 18. Hall sensor array; 19. Telescopic arm; 20. Folding arm; 21. Roller; 22. Electromagnetic damping brake; 23. U-shaped seat; 24. Absolute angle sensor; 25. Guide groove; 26. Drive motor; 27. Lead screw; 28. Guide block; 29. ​​Guide groove; 30. Angled guide block; 31. Anti-slip rubber pad; 32. Sliding groove; 33. Sliding block; 34. Reset component. Detailed Implementation

[0034] This invention provides a technical solution: an auxiliary device for replacing the magnetic shielding of power equipment, comprising: (see details) Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6The upper pressure plate 1 and the lower pressure plate 2 are located directly below the upper pressure plate 1. The clamping surfaces of the upper pressure plate 1 and the lower pressure plate 2 are provided with grooves 3. The inner cavity of the grooves 3 is provided with outwardly protruding conformal clamping pads 4. The conformal clamping pads 4 are composed of an adhesive layer 10, a functional layer 11 and an anti-slip layer 12 from the outside to the inside. The inner cavity of the functional layer 11 is uniformly provided with stepped blind holes 13. The inner cavity of the stepped blind holes 13 is respectively provided with a piezoelectric thin film sensing unit 14 and a neodymium iron boron permanent magnet unit 15. A floating element is provided between the piezoelectric thin film sensing unit 14 and the neodymium iron boron permanent magnet unit 15. Through holes 5 are provided around the top of the upper pressure plate 1 and the lower pressure plate 2. Each through hole 5 has a screw 6 inside and a nut 7 threadedly connected to the end of each screw 6. An integrated torque sensing module 8 is provided on the outside of each nut 7. Lifting rings 9 are installed on both sides of the upper pressure plate 1. An explosion-proof control box 17 is installed on the side of the upper pressure plate 1. Hall sensor arrays 18 are embedded around the sides of the upper pressure plate 1 and the lower pressure plate 2. Telescopic arms 19 are rotatably connected to the sides of the lower pressure plate 2, and each telescopic arm 19 is driven by an independent motor installed on the lower pressure plate 2. A U-shaped seat 23 is installed at the end of the telescopic arm 19, and a folding arm 20 is rotatably connected to the center of the U-shaped seat 23 through a rotating shaft. A roller 21 is rotatably connected to the end of the folding arm 20, and an electromagnetic damping brake 22 adapted to the roller 21 is installed on the outside of the folding arm 20. An absolute angle sensor 24 adapted to the rotating shaft and a locking component are installed on the outside of the U-shaped seat 23. A guide groove 25 is opened through the center of the telescopic arm 19, and a lead screw 27 is rotatably connected to the center of the guide groove 25. A drive motor 26 connected to the inner wall of the guide groove 25 is coaxially connected to the end of the lead screw 27. A guide block 28 that slides with the inner wall of the guide groove 25 is adapted to the thread on the surface of the lead screw 27. A connecting rod connected to the U-shaped seat 23 is installed on the outside of the guide block 28.

[0035] The auxiliary magnetic attraction force provided by the NdFeB permanent magnet unit 15 can significantly reduce the mechanical locking force, fundamentally preventing overpressure damage to the silicon steel sheet stack and surface insulation layer of the magnetic shielding plate. The floating component enables the NdFeB permanent magnet unit 15 to adapt to the slight deformation of the magnetic shielding plate surface, ensuring uniform contact across the entire clamping surface and improving clamping reliability.

[0036] The piezoelectric thin film sensing unit 14 works in conjunction with the integrated torque sensing module 8 to provide real-time feedback on the pressure distribution and locking torque status of the clamping surface. This effectively avoids insufficient clamping force or overpressure caused by manual operation and eliminates the safety hazard of the magnetic shielding plate slipping and falling off during hoisting.

[0037] The Hall sensor array 18 reuses the reference magnetic field generated by the neodymium iron boron permanent magnet unit 15, enabling non-contact attitude and distance detection without the need for an additional magnetic field generator. This perfectly suits the harsh working environment of the transformer tank, which is cramped, dimly lit, and contaminated with oil. The coordinated adjustment of the electromagnetic damping brake 22 and the telescopic arm 19 allows for precise control of the tilting speed and attitude, significantly improving tilting stability.

[0038] The absolute angle sensor 24 monitors the unfolding angle of the folding arm 20 in real time, and the locking mechanism provides reliable mechanical locking. When abnormal clamping, unstable posture, or excessive proximity to obstacles is detected, the system can automatically trigger multiple protection mechanisms to effectively prevent accidents such as device overturning or magnetic shielding plate colliding with equipment.

[0039] Please see Figure 2 and Figure 3 The inner circumferential surface of the through hole 5 is provided with guide grooves 29, and the two ends of the guide grooves 29 are designed to be through.

[0040] The through-type guide groove 29 design facilitates the installation and disassembly of the internal sliding parts, while effectively avoiding the problem of end jamming of the sliding parts during movement, ensuring the smooth movement of the sliding parts.

[0041] One end of the guide groove 29 is connected to the through hole 5, and the other end of the guide groove 29 is connected to the groove 3.

[0042] This achieves direct physical connection between the clamping state inside the groove 3 and the locking state inside the through hole 5, providing a reliable path for the transmission of clamping force to locking force, and ensuring the directness and effectiveness of force transmission.

[0043] The inner cavity of the guide groove 29 is fitted with a sloping guide block 30, and the two sides of the sloping guide block 30 are a sloping section and a vertical end, respectively.

[0044] The sliding motion of the inclined guide block 30 converts the axial thrust from the functional layer 11 into a radial locking force acting on the screw 6, realizing the conversion of force direction and providing a basic structure for the automatic locking of the screw 6.

[0045] The inclined section of the inclined guide block 30 faces the inner cavity of the groove 3, and the vertical end of the inclined guide block 30 faces the inner cavity of the through hole 5.

[0046] This ensures that the thrust of the functional layer 11 can be accurately applied to the inclined section of the inclined guide block 30, achieving a smooth force conversion, while also enabling the vertical end to act on the surface of the screw 6 in a vertical direction, producing the maximum radial locking effect.

[0047] Anti-slip rubber pads 31 are installed on the vertical ends of the inclined guide blocks 30, and the anti-slip rubber pads 31 correspond to the surface of the screw 6.

[0048] The friction between the inclined guide block 30 and the surface of the screw 6 is significantly increased, effectively preventing the screw 6 from rotating in the locked state. At the same time, the elastic deformation of the anti-slip rubber pad 31 can absorb the vibration energy generated during hoisting, further improving the reliability of locking.

[0049] A sliding groove 32 is provided at the top of the inner cavity of the guide groove 29, and the sliding groove 32 is arranged along the length of the guide groove 29.

[0050] The sliding groove 32 guides and limits the sliding block 33, effectively preventing the inclined guide block 30 from shifting or flipping during the sliding process, thus ensuring the stability and accuracy of the movement of the inclined guide block 30.

[0051] The inner cavity of the sliding groove 32 is slidably fitted with a sliding block 33, and the sliding block 33 is connected to the top of the inclined guide block 30.

[0052] This ensures the accuracy and stability of the movement of the inclined guide block 30, and avoids misalignment of the inclined guide block 30.

[0053] The inner cavity of the sliding groove 32 is provided with a reset member 34, and the two ends of the reset member 34 are respectively attached to the inner side wall of the sliding groove 32 and the surface of the sliding block 33.

[0054] The inclined guide block 30 is automatically reset, eliminating the need for manual reset operations, simplifying the disassembly process of the device, and ensuring that each component can accurately return to its initial position when the device is not in use, making it convenient for the next use.

[0055] Please see Figure 4 The four corners of the functional layer 11 are designed with inclined push edges 16, and the inclined push edges 16 are adapted to the inclined section of the inclined guide block 30.

[0056] Through the adaptation design of the inclined push edge 16 and the inclined guide block 30, the axial displacement of the functional layer 11 is converted into the synchronous radial displacement of multiple inclined guide blocks 30, ensuring that all screws 6 can be locked at the same time, making the clamping force distribution of the entire device more uniform, and significantly improving the stability and reliability of clamping.

[0057] This solution integrates a main control unit, a data acquisition module, a motor drive module, an electromagnetic damping control module, a safety warning module, and a wireless communication module within the explosion-proof control box 17. The main control unit, as the core control center of the device, is responsible for processing all acquired data and issuing control commands. The data acquisition module receives and preprocesses signals transmitted from various sensors. The motor drive module controls the operating status of all drive motors 26. The electromagnetic damping control module adjusts the braking torque of the electromagnetic damping brake 22. The safety warning module triggers a warning signal upon detecting an abnormal state. The wireless communication module enables data interaction and command transmission between the device and a handheld operating terminal.

[0058] Before starting work, completely disconnect the power supply to the electrical equipment to be repaired, hang safety warning signs, clear obstacles from the work site, check that all components of the device are intact, confirm that the insulating protective sleeve is undamaged, and that the emergency power supply has sufficient power. Turn on the handheld operating terminal and establish a connection with the explosion-proof control box 17 via the wireless communication module.

[0059] Upon powering on the device, each system module within the explosion-proof control box 17 performs a self-test sequentially. The data acquisition module sequentially checks the operating status of the piezoelectric thin-film sensing unit 14, the integrated torque sensing module 8, the Hall sensor array 18, and the absolute angle sensor 24. The motor drive module checks the operating status of the independent motor and the drive motor 26. The electromagnetic damping control module checks the operating status of the electromagnetic damping brake 22. After the self-test is completed and the handheld operating terminal displays normal operation, subsequent operations can proceed.

[0060] The magnetic shielding plate to be replaced is placed on the conformal clamping pad 4 of the lower pressure plate 2, so that the conformal clamping pad 4 of the upper pressure plate 1 is in contact with the top of the magnetic shielding plate. The magnetic attraction force generated by the neodymium iron boron permanent magnet unit 15 assists in fixing the magnetic shielding plate, and the floating component makes the neodymium iron boron permanent magnet unit 15 adaptively fit the surface shape of the magnetic shielding plate. The screw 6 is inserted into the through hole 5 of the upper pressure plate 1 and the lower pressure plate 2, and the nut 7 is tightened to achieve mechanical clamping and fixing.

[0061] During the clamping process, the functional layer 11 of the conformal clamping pad 4 is squeezed and moves into the groove 3. The inclined push edges 16 at the four corners of the functional layer 11 simultaneously contact the inclined sections of the corresponding inclined guide blocks 30, pushing all the inclined guide blocks 30 to move synchronously along the guide groove 29 towards the through hole 5, so that the anti-slip rubber pad 31 at the vertical end of the inclined guide block 30 contacts the surface of the screw 6 and generates extrusion deformation.

[0062] Meanwhile, the piezoelectric thin film sensing unit 14 collects the clamping pressure data of each zone in real time, and the integrated torque sensing module 8 collects the locking torque data of the nut 7 in real time. All data are preprocessed by the data acquisition module and then transmitted to the main control unit. When the clamping force reaches the preset threshold, the handheld operation terminal issues a prompt to stop tightening the nut 7.

[0063] After clamping is complete, a command is sent via a handheld operating terminal to unlock the locking mechanism, adjust the folding arm 20 to the preset unfolding angle, and the locking mechanism automatically locks the folding arm 20. The absolute angle sensor 24 collects the unfolding angle data of the folding arm 20 in real time and transmits it to the main control unit. The main control unit controls the drive motor 26 to drive the lead screw 27 to rotate through the motor drive module. The lead screw 27 drives the guide block 28 to slide along the guide groove 25. The guide block 28 drives the U-shaped seat 23 to rotate through the connecting rod, thereby adjusting the extension length of the telescopic arm 19 and making the roller 21 stably contact the working surface.

[0064] Connect the hoisting rope to the lifting ring 9. After confirming that the connection is secure, slowly lift the device. The device rotates using the roller 21 as a fulcrum. During the rotation, the Hall sensor array 18 uses the magnetic field generated by the neodymium iron boron permanent magnet unit 15 as a reference to collect the spatial attitude data of the device and the distance data between it and surrounding obstacles in real time.

[0065] Based on the acquired attitude, distance, and dynamic load distribution data collected by the piezoelectric thin film sensing unit 14, the main control unit controls the electromagnetic damping brake 22 via the electromagnetic damping control module to adjust the rotational damping of the roller 21. Simultaneously, the motor drive module controls the drive motor 26 to fine-tune the length of the telescopic arm 19 in real time, maintaining stable device rotation. When the distance between the device and an obstacle is detected to be less than a safety threshold, the main control unit triggers an audible and visual alarm via the safety warning module, simultaneously controlling the electromagnetic damping brake 22 to automatically lock the roller 21, pausing the rotation operation.

[0066] After the device is rotated to the preset angle, continue lifting the device to smoothly transport the magnetic shielding plate to the target installation position. Adjust the position of the device to align the magnetic shielding plate with the installation hole, insert the fixing bolts and tighten them initially. Tighten the nut 7 in the reverse direction to release the mechanical clamps. The functional layer 11 of the conformal clamping pad 4 springs back, the reset component 34 releases its elastic potential energy, and pushes the sliding block 33 to slide in the reverse direction along the sliding groove 32, thereby driving the inclined guide block 30 back to the initial position along the guide groove 29. The anti-slip rubber pad 31 separates from the surface of the screw 6. Pull out the screw 6 to separate the upper pressure plate 1 and the lower pressure plate 2, completing the installation of the magnetic shielding plate.

[0067] After the operation is completed, a command is sent via the handheld operating terminal to control the drive motor 26 to rotate the lead screw 27 in the opposite direction, retracting the telescopic arm 19. The locking mechanism is then unlocked, and the folding arm 20 is folded back, automatically locking itself. Oil and debris are cleaned from the surface of the device, the power supply is disconnected, and the device is stored in a dry and well-ventilated designated location.

[0068] This device also includes a handheld operating terminal, an audible and visual alarm, an emergency power supply, and an insulating protective sleeve. The handheld operating terminal is used to remotely view the device's operating status, send control commands, and receive early warning information. The audible and visual alarm issues an alert when an abnormal condition is detected, reminding on-site personnel. The emergency power supply provides temporary power to the device in case of an unexpected main power outage, ensuring the normal operation of safety warning and emergency braking functions. The insulating protective sleeve covers all electrical connections of the device to prevent electric shock and contamination of electrical components by insulating oil.

Claims

1. An auxiliary device for replacing magnetic shielding in power equipment, characterized in that, include: The upper pressure plate (1) and the lower pressure plate (2) are located directly below the upper pressure plate (1). The clamping surfaces of the upper pressure plate (1) and the lower pressure plate (2) are provided with grooves (3). A conformal clamping pad (4) is provided in the inner cavity of the groove (3). The conformal clamping pad (4) is composed of an adhesive layer (10), a functional layer (11) and an anti-slip layer (12). Blind holes (13) are uniformly provided in the inner cavity of the functional layer (11). A piezoelectric thin film sensing unit (14) and a neodymium iron boron permanent magnet unit (15) are respectively provided in the inner cavity of the blind holes (13). A floating element is provided between the piezoelectric thin film sensing unit (14) and the neodymium iron boron permanent magnet unit (15). Through holes (5) are opened around the top of the upper pressure plate (1) and the lower pressure plate (2), and screws (6) are provided in the inner cavity of the through holes (5). Nuts (7) are threaded to the ends of the screws (6), and the nuts (7) are embedded in the integrated torque sensing module (8). Lifting rings (9) are installed on both sides of the upper pressure plate (1), and explosion-proof control boxes (17) are installed on the side of the upper pressure plate (1). Hall sensor arrays (18) are embedded around the sides of the upper pressure plate (1) and the lower pressure plate (2). Telescopic arm (19) is rotatably connected to the sides of the lower pressure plate (2), and a folding arm (20) is rotatably connected to the end of the telescopic arm (19), and a roller (21) is rotatably connected to the end of the folding arm (20). An electromagnetic damping brake (22) is installed on the outside of the folding arm (20), and an absolute angle sensor (24) is provided at the rotating ends of the telescopic arm (19) and the folding arm (20). A guide groove (25) is provided at the center of the telescopic arm (19), and a lead screw (27) is rotatably connected to the guide groove (25). A drive motor (26) is connected to the end of the lead screw (27), and a guide block (28) is adapted to the thread on the surface of the lead screw (27).

2. The auxiliary device for replacing magnetic shielding in power equipment according to claim 1, characterized in that: The inner circumferential surface of the through hole (5) is provided with guide grooves (29), and the two ends of the guide grooves (29) are designed to be through.

3. The auxiliary device for replacing magnetic shielding in power equipment according to claim 2, characterized in that: One end of the guide groove (29) is connected to the through hole (5), and the other end of the guide groove (29) is connected to the groove (3).

4. The auxiliary device for replacing magnetic shielding in power equipment according to claim 3, characterized in that: The inner cavity of the guide groove (29) is fitted with a sloping guide block (30), and the two sides of the sloping guide block (30) are a sloping section and a vertical end, respectively.

5. The auxiliary device for replacing magnetic shielding in power equipment according to claim 4, characterized in that: The inclined section of the inclined guide block (30) faces the inner cavity of the groove (3), and the vertical end of the inclined guide block (30) faces the inner cavity of the through hole (5).

6. The auxiliary device for replacing magnetic shielding in power equipment according to claim 5, characterized in that: The vertical ends of the inclined guide blocks (30) are all equipped with anti-slip rubber pads (31), and the anti-slip rubber pads (31) correspond to the surface of the screw (6).

7. The auxiliary device for replacing magnetic shielding in power equipment according to claim 6, characterized in that: The top of the inner cavity of the guide groove (29) is provided with a sliding groove (32), and the sliding groove (32) is arranged along the length of the guide groove (29).

8. The auxiliary device for replacing magnetic shielding in power equipment according to claim 7, characterized in that: The inner cavity of the sliding groove (32) is slidably fitted with a sliding block (33), and the sliding block (33) is connected to the top of the inclined guide block (30).

9. The auxiliary device for replacing magnetic shielding in power equipment according to claim 8, characterized in that: The inner cavity of the sliding groove (32) is provided with a reset member (34), and the two ends of the reset member (34) are respectively attached to the inner side wall of the sliding groove (32) and the surface of the sliding block (33).

10. The auxiliary device for replacing magnetic shielding in power equipment according to claim 9, characterized in that: The four corners of the functional layer (11) are designed with inclined push edges (16), and the inclined push edges (16) are adapted to the inclined section of the inclined guide block (30).

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