Magnetic levitation gyration body mechanism

Abstract

The application belongs to the technical field of rotary body mechanism, and particularly relates to a magnetic suspension rotary body mechanism, which comprises a cover body, a connecting shaft rotatably arranged at the middle of the lower end of the cover body, a rotary body arranged at the upper end of the connecting shaft, a first fixed magnet fixedly connected to the upper end of a first magnet fixing base, a first rotary magnet arranged on the rotary body, a self-rotation shaft rotatably arranged on each side of the rotary body, a second magnet fixing base arranged on the self-rotation shaft, a second fixed magnet arranged on the second magnet fixing base, and a second rotary magnet arranged on the rotary body. The adjustable connecting assembly is used. When the connecting shaft is required to drive the rotation of a cylindrical object, the connecting shaft is extended into the inner cavity of the cylindrical object to drive the rotation of the connecting rod I and the connecting rod II, so that the plurality of inner supporting plates are expanded from the inside to the outside and are attached to the inner wall of the cylindrical object, thereby fixing the cylindrical object. At this time, the rotation of the connecting shaft drives the synchronous rotation of the cylindrical object, and the adaptability is high.

Description

Technical Field

[0001] This invention belongs to the technical field of rotating body mechanisms, specifically a magnetically levitated rotating body mechanism. Background Technology

[0002] Magnetic levitation rotating body structures represent a cutting-edge technology in modern precision mechanical manufacturing and electromechanical control. As the name suggests, it is a complex mechatronic device integrating a magnetic field generation system, a high-precision position sensing and closed-loop feedback control system, and the controlled object (i.e., the rotating body). Its most fundamental physical characteristic lies in its complete elimination of the physical contact support methods necessary in traditional mechanical transmissions. Both sliding and rolling bearings become unnecessary in magnetic levitation structures. Instead, controllable electromagnetic force replaces traditional mechanical support forces, enabling objects with rotationally symmetrical geometries, such as high-speed rotors, precision disks, and grinding spheres, to rotate at extremely high speeds or with extremely high precision around their own geometric axes in a completely contactless levitation state. This non-contact characteristic fundamentally eliminates friction and wear, significantly extending the service life of the mechanism and substantially reducing heat and energy loss caused by friction, providing an ideal solution for ultra-high speed and ultra-clean working environments.

[0003] In existing applications of magnetic levitation rotating body technology, permanent magnets or electromagnets are typically used to construct the levitation magnetic field. Taking a common permanent magnet levitation structure as an example, by placing a fixed magnet in the stator and a rotating magnet in the rotor, a stable, mutually repulsive force field is generated between the fixed and rotating magnets based on the fundamental physical principle that like poles of magnets repel each other. This repulsive force field can effectively counteract part of the rotor's own gravity or centrifugal load, thereby greatly reducing the pressure on the bottom or lateral mechanical bearings of the rotating body and its connected spindle. This design theoretically achieves magnetic unloading, reducing starting torque and operating noise.

[0004] However, in-depth practical application has revealed that while existing technical solutions address friction reduction to some extent, they have significant shortcomings in terms of functional expandability. In actual industrial applications, operators often need more than just the rotating body to rotate under no-load conditions; they frequently require using the rotating shaft as a power output to drive various cylindrical objects (such as filter cartridges, drums, and pipe fittings) to rotate synchronously. Traditional connection methods typically rely on flanges to connect the shaft and the cylinder. While flange connections are reliable, their fixed dimensions cannot accommodate cylindrical objects with varying inner diameters. This means that for each different cylinder size, custom-made or replaced flange fixtures are required, significantly increasing equipment preparation time and operational complexity, severely impacting work efficiency. Furthermore, the presence of impurities or dust inside the cylindrical object affects the fit of the clamping surfaces, further interfering with subsequent rotation. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, the present invention proposes a magnetic levitation rotating body mechanism.

[0006] The technical solution adopted by this invention to solve its technical problem is: a magnetic levitation rotating body mechanism, including a cover, a connecting shaft rotatably arranged at the lower middle of the cover, a rotating body arranged at the upper end of the connecting shaft, a first magnet fixing seat arranged on the cover, a first fixed magnet fixedly connected to the first magnet fixing seat, a first rotating magnet arranged on the rotating body, a rotation shaft rotatably arranged on both sides of the rotating body, a second magnet fixing seat arranged on the rotation shaft, a second fixed magnet arranged on the second magnet fixing seat, a second rotating magnet also arranged on the rotating body, a first gear fixedly connected to the first magnet fixing seat, a second gear fixedly sleeved on the rotation shaft, a third gear and a fourth gear rotatably arranged on the rotating body, the fourth gear meshing with the first gear, and the second gear meshing with the third gear.

[0007] Preferably, it also includes an adjustable connection component; A sliding sleeve is slidably fitted on the connecting shaft. Multiple connecting rods are evenly distributed and rotatably mounted on the sliding sleeve along the circumference. An adjusting plate is rotatably mounted on one end of each connecting rod, and an inner support plate is rotatably mounted on one end of the adjusting plate.

[0008] Preferably, a second connecting rod is rotatably disposed in the middle of the first connecting rod, one end of the second connecting rod is rotatably disposed on the connecting shaft, and the other end is fixedly connected to a limit block. A groove block is fixedly connected to one side of the adjusting plate, and the limit block is embedded in the groove of the groove block and slidably connected to it.

[0009] Preferably, a threaded rod is threadedly connected to one side of the sliding sleeve, and both ends of the threaded rod are rotatably mounted on the connecting shaft. A motor is fixedly connected to one side of the connecting shaft, and the output end of the motor is fixedly connected to one end of the threaded rod.

[0010] Preferably, a threaded block is slidably connected to one side of the adjusting plate via a slide groove, and a connecting rod three is rotatably provided on one side of the threaded block, with one end of the connecting rod three rotatably connected to one side of the inner support plate.

[0011] Preferably, a threaded rod three is threadedly connected to one side of the threaded block, and both ends of the threaded rod three are rotatably mounted on the adjustment plate.

[0012] Preferably, a motor is fixedly connected to one side of the bottom of the adjustment plate, and the output end of the motor is fixedly connected to one end of the threaded rod.

[0013] Preferably, it also includes a component to prevent particulate interference; The anti-particle component includes a slider that is slidably connected to one side of the inner support plate. A scraper is rotatably provided on one side of the slider, and the scraper is in contact with the surface of the inner support plate.

[0014] Preferably, a threaded rod 2 is threadedly connected to one side of the slider, and both ends of the threaded rod 2 are rotatably mounted on the inner support plate. A motor 2 is fixedly connected to one end of the inner support plate, and the output end of the motor 2 is fixedly connected to one end of the threaded rod 2.

[0015] Preferably, a motor is fixedly connected to one side of the slider, and the output end of the motor is fixedly connected to one end of the scraper.

[0016] The beneficial effects of this invention are as follows: 1. The magnetic levitation rotating body mechanism of this invention utilizes an adjustable connecting assembly. When a cylindrical object needs to be rotated synchronously using a connecting shaft, the operator or control system can insert the connecting shaft into the inner cavity of the cylindrical object. Subsequently, through precise drive by motor four, the sliding sleeve moves axially on the connecting shaft. This action, through the linkage mechanism formed by connecting rod one and connecting rod two, efficiently converts the axial force into radial force, driving multiple inner support plates to expand synchronously and uniformly from the inside out. This expansion action ensures that the inner support plates fit tightly against the inner wall of the cylindrical object, forming a stable interference fit or friction fit, thereby firmly fixing the cylindrical object to the connecting shaft. At this time, when the connecting shaft is driven to rotate by an external drive device, the connecting shaft will reliably transmit torque to the cylindrical object, causing it to rotate synchronously. This design completely solves the pain point of traditional flanges only being able to fit a single size. By adjusting the stroke of the sliding sleeve, clamping of cylinders with various inner diameters can be achieved, significantly improving the versatility and ease of operation of the equipment, and exhibiting high adaptability.

[0017] 2. When the cylindrical object to be clamped is not a standard cylinder, if a gap exists in the contact surface due to an angle mismatch after the inner support plate initially expands and contacts the inner wall of the conical cylinder, motor one can be activated through the control system. Motor one drives the threaded rod three to rotate, causing the threaded block to move precisely within the groove of the adjusting plate. The movement of the threaded block changes the spatial position and angle of the connecting rod three, thereby pushing the inner support plate to swing at a small angle around its hinge point. This dynamic adjustment process allows the outer surface of the inner support plate to gradually adapt to the slope of the inner wall of the conical cylinder, ultimately achieving complete surface contact or high-precision parallel contact between the inner support plate and the inner wall of the object. This adaptive angle adjustment function not only improves the stability of the connection and prevents slippage or shaking during rotation, but also greatly expands the applicability of the mechanism, enabling it to handle various non-standard tapered workpieces, further improving the adaptability and reliability of the connection.

[0018] 3. The magnetic levitation rotating body mechanism of this invention utilizes an anti-particle interference component. Before the inner support plate adheres to the inner wall of the object, the slider descends along the surface of the inner support plate. A scraper then scrapes away impurities adhering to the outer surface of the inner support plate from top to bottom until the scraper is at the bottom of the inner support plate. The scraper then rotates inside the inner support plate, preventing any interference with the adhesion between the inner support plate and the object's inner wall. This avoids the situation where impurities adhering to the surface of the inner support plate prevent complete adhesion between the inner support plate and the object's inner wall, thus avoiding any impact on the synchronous rotation of the object and the connecting shaft. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a three-dimensional structural diagram of the cover of a magnetic levitation rotating body mechanism according to the present invention; Figure 2 This is a schematic diagram of the complete three-dimensional structure of a magnetic levitation rotating body mechanism according to the present invention; Figure 3 This is a three-dimensional structural diagram of the rotating body of a magnetic levitation rotating body mechanism according to the present invention; Figure 4 This is a three-dimensional structural diagram of the connecting shaft of a magnetic levitation rotating body mechanism according to the present invention; Figure 5 This is a three-dimensional structural diagram of the inner support plate of a magnetic levitation rotating body mechanism according to the present invention; Figure 6 This invention relates to a magnetic levitation rotating body mechanism. Figure 5 Enlarged view of a portion of point A in the middle; Figure 7 This is a three-dimensional structural diagram of the scraper section of a magnetic levitation rotating body mechanism according to the present invention; Figure 8 This is a three-dimensional structural diagram of the adjusting plate of a magnetic levitation rotating body mechanism according to the present invention; Figure 9 This invention relates to a magnetic levitation rotating body mechanism. Figure 8 Enlarged view of a section at point B in the middle; Figure 10 This is a three-dimensional structural diagram of the threaded block of a magnetic levitation rotating body mechanism according to the present invention.

[0021] In the diagram: 1. Cover; 2. Magnet holder 1; 3. Rotating body; 4. Gear 1; 5. Rotation shaft; 6. Gear 2; 7. Connecting shaft; 8. Motor 4; 9. Fixed magnet 1; 10. Rotating magnet 1; 11. Motor 1; 12. Gear 3; 13. Rotating magnet 2; 14. Magnet holder 2; 15. Fixed magnet 2; 16. Threaded rod 1; 17. Sliding sleeve; 18. Connecting rod 1; 19. Connecting rod 2; 20. Adjusting plate; 21. Inner support plate; 22. Limiting block; 23. Groove block; 24. Motor 2; 25. Threaded rod 2; 26. Scraper; 27. Sliding block; 28. Connecting rod 3; 29. ​​Motor 3; 30. Threaded rod 3; 31. Threaded block; 32. Gear 4. Detailed Implementation

[0022] The technical solution of the present invention will now be clearly and completely described 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.

[0023] Please refer to Figures 1-10 The present invention provides a technical solution: a magnetic levitation rotating body mechanism, including a cover 1, a connecting shaft 7 rotatably disposed at the lower middle part of the cover 1, a rotating body 3 disposed at the upper end of the connecting shaft 7, a magnet fixing seat 1 2 disposed on the cover 1, a fixing magnet 9 fixedly connected to the magnet fixing seat 1 2, a rotating magnet 10 disposed on the rotating body 3, a rotation shaft 5 rotatably disposed on both sides of the rotating body 3, a magnet fixing seat 2 14 disposed on the rotation shaft 5, a fixing magnet 2 15 disposed on the magnet fixing seat 2 14, a rotating magnet 2 13 disposed on the rotating body 3, a gear 4 fixedly connected to the magnet fixing seat 1 2, a gear 2 6 fixedly sleeved on the rotation shaft 5, a gear 3 12 and a gear 4 32 rotatably disposed on the rotating body 3, the gear 4 32 meshing with the gear 1 4, and the gear 2 6 meshing with the gear 3 12.

[0024] In this embodiment, as Figures 5-7 , Figure 10 As shown, it also includes an adjustable connection component; A sliding sleeve 17 is slidably sleeved on the connecting shaft 7. Multiple connecting rods 18 are evenly distributed and rotatably arranged on the sliding sleeve 17 along the circumference. An adjusting plate 20 is rotatably arranged at one end of the connecting rods 18, and an inner support plate 21 is rotatably arranged at one end of the adjusting plate 20.

[0025] A second connecting rod 19 is rotatably mounted in the middle of the first connecting rod 18. One end of the second connecting rod 19 is rotatably mounted on the connecting shaft 7, and the other end is fixedly connected to a limit block 22. A groove block 23 is fixedly connected to one side of the adjusting plate 20. The limit block 22 is embedded in the groove of the groove block 23 and is slidably connected to it.

[0026] A threaded rod 16 is threadedly connected to one side of the sliding sleeve 17. Both ends of the threaded rod 16 are rotatably mounted on the connecting shaft 7. A motor 4 8 is fixedly connected to one side of the connecting shaft 7. The output end of the motor 4 8 is fixedly connected to one end of the threaded rod 16.

[0027] A threaded block 31 is slidably connected to one side of the adjusting plate 20 via a slide groove. A connecting rod 28 is rotatably mounted on one side of the threaded block 31. One end of the connecting rod 28 is rotatably connected to one side of the inner support plate 21.

[0028] A threaded rod 30 is threadedly connected to one side of the threaded block 31, and both ends of the threaded rod 30 are rotatably mounted on the adjusting plate 20.

[0029] A motor 11 is fixedly connected to one side of the bottom of the adjusting plate 20, and the output end of the motor 11 is fixedly connected to one end of the threaded rod 30.

[0030] Specifically, in existing applications of magnetic levitation rotating body technology, permanent magnets or electromagnets are typically used to construct the levitation magnetic field. Taking a common permanent magnet levitation structure as an example, by placing a fixed magnet in the stator and a rotating magnet in the rotor, a stable, mutually repulsive force field is generated between the fixed and rotating magnets based on the fundamental physical principle that like poles of magnets repel each other. This repulsive force field can effectively counteract part of the rotor's own gravity or centrifugal load, thereby greatly reducing the pressure on the bottom or lateral mechanical bearings of the rotating body and its connected spindle. This design theoretically achieves magnetic unloading, reducing starting torque and operating noise.

[0031] However, in-depth practical application has revealed that while existing technical solutions address friction reduction to some extent, they have significant shortcomings in terms of functional expandability. In actual industrial applications, operators often need more than just the rotating body to rotate under no-load conditions; they frequently require using the rotating shaft as a power output to drive various cylindrical objects (such as filter cartridges, drums, and pipe fittings) to rotate synchronously. Traditional connection methods typically rely on flanges to connect the shaft and the cylinder. While flange connections are reliable, their fixed dimensions cannot accommodate cylindrical objects with varying inner diameters. This means that for each different cylinder size, custom-made or replaced flange fixtures are required, significantly increasing equipment preparation time and operational complexity, severely impacting work efficiency. Furthermore, the presence of impurities or dust inside the cylindrical object affects the fit of the clamping surfaces, further interfering with subsequent rotation.

[0032] Therefore, in order to solve the above problems, the working principle of this embodiment is as follows: When the connecting shaft 7 is driven by an external drive device to rotate at a preset speed and torque, the connecting shaft 7 directly transmits its rotational power to the rotating body 3 fixedly connected to it at the upper end, thereby driving the entire rotating body 3 to begin revolving around its axis. During this rotation, since gear 4 32 maintains a continuous meshing state with the stationary gear 1 4, and gear 1 4 is fixedly mounted on the stationary magnet mounting base 1 2, when the rotating body 3 carries gear 4 32 around the center of gear 1 4, gear 4 32, constrained by its revolution trajectory, will inevitably generate a rotational motion around its own axis relative to the rotating body 3. At the same time, since gear 4 32 and gear 3 12 are coaxially arranged or linked through an intermediate component, the rotation of gear 4 32 will synchronously drive gear 3 12 to rotate in the corresponding direction and speed. Next, gear 3 12 transmits its rotational power to gear 2 6, which meshes with it, driving gear 2 6 to start rotating. Gear 2 6 is fixedly mounted on the rotation shaft 5. Therefore, the independent rotational motion of the rotation shaft 5 relative to the rotating body 3 is finally realized.

[0033] Throughout the operation of the rotating system, the magnetic levitation friction reduction mechanism functions synchronously. Specifically, based on the fundamental physical principle of like poles repelling each other, a continuous, oppositely acting repulsive force field is formed between the fixed magnet 9, fixed on the magnet holder 2, and the rotating magnet 10, embedded in the rotating body 3, because their opposing magnetic poles are the same. Similarly, a corresponding repulsive force is generated between the fixed magnet 15, located on the magnet holder 14, and the rotating magnet 13, located on the rotating body 3, due to their like poles facing each other. These two independent repulsive force fields work together to effectively and dynamically balance the gravitational and centrifugal loads borne by the rotating body 3 and the spindle 5, respectively. This significantly reduces the radial and axial pressures on the supporting bearings of the rotating body 3 and the spindle 5 during high-speed rotation, reduces frictional loss, and extends the service life of the bearings.

[0034] When the connecting shaft 7 is needed to drive a cylindrical object (such as a filter cartridge, drum, pipe joint, etc.) to rotate synchronously in actual working conditions, the operator or automated control system first inserts the front end of the connecting shaft 7 into the inner cavity of the cylindrical object to be fixed. Then, the motor 8, installed on one side of the connecting shaft 7, is started. The output shaft of the motor 8 begins to rotate in either the forward or reverse direction, driving the connected threaded rod 16 to rotate synchronously via a coupling. Since the sliding sleeve 17 has a threaded connection structure that matches the threaded rod 16, and the sliding sleeve 17 itself is slidably fitted onto the connecting shaft 7, the rotational motion of the threaded rod 16 is precisely converted into linear movement of the sliding sleeve 17 along the axial direction of the connecting shaft 7 through the transmission action of the threaded pair. The axial movement of the sliding sleeve 17 directly causes displacement of the roots of the multiple connecting rods 18 rotatably connected to it, thereby forcing the connecting rods 18 to swing around their hinge point with the sliding sleeve 17. Meanwhile, connecting rod 19, acting as an auxiliary constraint member, has one end rotatably connected to the fixed position of connecting shaft 7, and the other end slidingly engaged with the groove block 23 on adjusting plate 20 via limiting block 22. This linkage mechanism ensures that the swing of connecting rod 18 can be stably transmitted to adjusting plate 20. Driven by both connecting rod 18 and connecting rod 19, multiple adjusting plates 20 will drive the inner support plates 21 rotatably connected at their ends to expand synchronously and uniformly from the inside out along a predetermined radial trajectory. When the outer surfaces of multiple inner support plates 21 are simultaneously in close contact with the inner wall of the cylindrical object, generating sufficient friction or interference fit force, the cylindrical object is firmly fixed to connecting shaft 7. At this time, when connecting shaft 7 is driven to rotate again by an external drive device, connecting shaft 7 will reliably transmit its torque to the cylindrical object, enabling it to rotate synchronously and stably with connecting shaft 7. This process fully demonstrates the high adaptability of the mechanism to objects with different inner diameters.

[0035] Furthermore, in some special application scenarios, the cylindrical objects to be processed may not be standard cylinders, but rather conical structures with a certain taper or slope. In this case, if conventional radial expansion clamping is used directly, the surface of the inner support plate 21 and the conical inner wall often experience point or line contact due to angle mismatch, rather than ideal surface contact, resulting in insufficient clamping force or unstable clamping, thus affecting the normal fixing effect and subsequent rotation accuracy. To solve this technical problem, this solution designs an angle fine-tuning mechanism. Specifically, by activating the motor 11 fixedly installed at the bottom of the adjusting plate 20, the output shaft of the motor 11 drives the threaded rod 30 to rotate precisely. The rotation of the threaded rod 30 will cause the threaded block 31, which is threadedly connected to it, to slide smoothly in a pre-set groove in the adjusting plate 20. The sliding of the threaded block 31 will change the position of its connection point with the connecting rod 28, thereby pushing the inner support plate 21 to rotate slightly around its hinge point with the adjusting plate 20 through the connecting rod 28. Through this precise angle adjustment process, the posture of the outer surface of the inner support plate 21 can be dynamically adjusted until it can achieve a complete and precise fit with the inner wall of the tapered cylindrical object, thereby significantly improving the mechanism's adaptability to irregular or tapered workpieces and ensuring the reliability of clamping and the stability of transmission.

[0036] In this embodiment, as Figures 7-9 As shown, it also includes a component to prevent particulate interference; The anti-particle component includes a slider 27 slidably connected to one side of the inner support plate 21, and a scraper 26 is rotatably provided on one side of the slider 27, with the scraper 26 in contact with the surface of the inner support plate 21.

[0037] A threaded rod 25 is threadedly connected to one side of the slider 27. Both ends of the threaded rod 25 are rotatably mounted on the inner support plate 21. A motor 24 is fixedly connected to one end of the inner support plate 21. The output end of the motor 24 is fixedly connected to one end of the threaded rod 25.

[0038] A motor 29 is fixedly connected to one side of the slider 27, and the output end of the motor 29 is fixedly connected to one end of the scraper 26.

[0039] Specifically, in the above embodiments, although the inner support plate 21 can be fixed by adhering it to the inner wall of the object, the surface of the inner support plate 21 is prone to the adhesion of impurity particles due to environmental factors. These impurity particles will make it difficult for the inner support plate 21 to fully adhere to the inner wall of the object, which will also affect the synchronous rotation of the subsequent object and the connecting shaft 7.

[0040] Therefore, in order to solve the above problems, the working principle of this embodiment is as follows: Before the inner support plate 21 is attached to the inner wall of the object, the second motor 24 drives the second threaded rod 25 to rotate, causing the slider 27 to descend along the surface of the inner support plate 21. The scraper 26 then scrapes away impurities adhering to the outer surface of the inner support plate 21 from top to bottom until it reaches the bottom. Then, the third motor 29 drives the scraper 26 to rotate, causing it to move inside the inner support plate 21 without affecting the attachment between the inner support plate 21 and the inner wall of the object. This avoids the situation where impurities adhering to the surface of the inner support plate 21 prevent the inner support plate 21 from not fully adhering to the inner wall of the object, thus affecting the subsequent synchronous rotation of the object and the connecting shaft 7.

[0041] Working principle: When the connecting shaft 7 is driven by an external drive device to rotate at a preset speed and torque, the connecting shaft 7 directly transmits its rotational power to the rotating body 3 fixedly connected to it at the upper end, thereby driving the entire rotating body 3 to begin revolving around its axis. During this rotation, since gear 4 32 maintains a continuous meshing state with the stationary gear 1 4, and gear 1 4 is fixedly mounted on the stationary magnet mounting base 1 2, when the rotating body 3 carries gear 4 32 around the center of gear 1 4, gear 4 32, constrained by its revolution trajectory, will inevitably generate a rotational motion around its own axis relative to the rotating body 3. At the same time, since gear 4 32 and gear 3 12 are coaxially set or linked through an intermediate component, the rotation of gear 4 32 will synchronously drive gear 3 12 to rotate in the corresponding direction and speed. Next, gear 3 12 transmits its rotational power to gear 2 6, which meshes with it, driving gear 2 6 to start rotating. Gear 2 6 is fixedly mounted on the rotation shaft 5. Therefore, the independent rotational motion of the rotation shaft 5 relative to the rotating body 3 is finally realized.

[0042] Throughout the operation of the rotating system, the magnetic levitation friction reduction mechanism functions synchronously. Specifically, based on the fundamental physical principle of like poles repelling each other, a continuous, oppositely acting repulsive force field is formed between the fixed magnet 9, fixed on the magnet holder 2, and the rotating magnet 10, embedded in the rotating body 3, because their opposing magnetic poles are the same. Similarly, a corresponding repulsive force is generated between the fixed magnet 15, located on the magnet holder 14, and the rotating magnet 13, located on the rotating body 3, due to their like poles facing each other. These two independent repulsive force fields work together to effectively and dynamically balance the gravitational and centrifugal loads borne by the rotating body 3 and the spindle 5, respectively. This significantly reduces the radial and axial pressures on the supporting bearings of the rotating body 3 and the spindle 5 during high-speed rotation, reduces frictional loss, and extends the service life of the bearings.

[0043] When the connecting shaft 7 is needed to drive a cylindrical object (such as a filter cartridge, drum, pipe joint, etc.) to rotate synchronously in actual working conditions, the operator or automated control system first inserts the front end of the connecting shaft 7 into the inner cavity of the cylindrical object to be fixed. Then, the motor 8, installed on one side of the connecting shaft 7, is started. The output shaft of the motor 8 begins to rotate in either the forward or reverse direction, driving the connected threaded rod 16 to rotate synchronously via a coupling. Since the sliding sleeve 17 has a threaded connection structure that matches the threaded rod 16, and the sliding sleeve 17 itself is slidably fitted onto the connecting shaft 7, the rotational motion of the threaded rod 16 is precisely converted into linear movement of the sliding sleeve 17 along the axial direction of the connecting shaft 7 through the transmission action of the threaded pair. The axial movement of the sliding sleeve 17 directly causes displacement of the roots of the multiple connecting rods 18 rotatably connected to it, thereby forcing the connecting rods 18 to swing around their hinge point with the sliding sleeve 17. Meanwhile, connecting rod 19, acting as an auxiliary constraint member, has one end rotatably connected to the fixed position of connecting shaft 7, and the other end slidingly engaged with the groove block 23 on adjusting plate 20 via limiting block 22. This linkage mechanism ensures that the swing of connecting rod 18 can be stably transmitted to adjusting plate 20. Driven by both connecting rod 18 and connecting rod 19, multiple adjusting plates 20 will drive the inner support plates 21 rotatably connected at their ends to expand synchronously and uniformly from the inside out along a predetermined radial trajectory. When the outer surfaces of multiple inner support plates 21 are simultaneously in close contact with the inner wall of the cylindrical object, generating sufficient friction or interference fit force, the cylindrical object is firmly fixed to connecting shaft 7. At this time, when connecting shaft 7 is driven to rotate again by an external drive device, connecting shaft 7 will reliably transmit its torque to the cylindrical object, enabling it to rotate synchronously and stably with connecting shaft 7. This process fully demonstrates the high adaptability of the mechanism to objects with different inner diameters.

[0044] Furthermore, in some special application scenarios, the cylindrical objects to be processed may not be standard cylinders, but rather conical structures with a certain taper or slope. In this case, if conventional radial expansion clamping is used directly, the surface of the inner support plate 21 and the conical inner wall often experience point or line contact due to angle mismatch, rather than ideal surface contact, resulting in insufficient clamping force or unstable clamping, thus affecting the normal fixing effect and subsequent rotation accuracy. To solve this technical problem, this solution designs an angle fine-tuning mechanism. Specifically, by activating the motor 11 fixedly installed at the bottom of the adjusting plate 20, the output shaft of the motor 11 drives the threaded rod 30 to rotate precisely. The rotation of the threaded rod 30 will cause the threaded block 31, which is threadedly connected to it, to slide smoothly in a pre-set groove in the adjusting plate 20. The sliding of the threaded block 31 will change the position of its connection point with the connecting rod 28, thereby pushing the inner support plate 21 to rotate slightly around its hinge point with the adjusting plate 20 through the connecting rod 28. Through this precise angle adjustment process, the posture of the outer surface of the inner support plate 21 can be dynamically adjusted until it can achieve a complete and precise fit with the inner wall of the tapered cylindrical object, thereby significantly improving the mechanism's adaptability to irregular or tapered workpieces and ensuring the reliability of clamping and the stability of transmission.

[0045] Considering the actual industrial environment, especially in dusty conditions, the surface of the inner support plate 21 is prone to accumulating dust, metal shavings, or other fine particles after repeated use. If these impurities are not cleaned in time, they will form microscopic protrusions when the inner support plate 21 is in contact with the inner wall of the object, resulting in a reduced actual contact area, decreased clamping force, and even eccentric vibration during rotation, seriously affecting the processing or transmission quality. Therefore, before the inner support plate 21 is finally in contact with the inner wall of the object, the anti-particle interference component can be activated in advance for cleaning. The specific operation is as follows: start motor 24, which drives the threaded rod 25 to rotate, thereby causing the slider 27 to descend uniformly from top to bottom along the surface of the inner support plate 21. During the descent of the slider 27, the scraper 26, which is rotatably connected to the slider 27 and initially in close contact with the outer surface of the inner support plate 21, will simultaneously scrape the surface of the inner support plate 21, effectively scraping off and pushing off all the impurities attached to it from top to bottom. When the slider 27, carrying the scraper 26, moves to the bottom of the inner support plate 21, the motor 29 starts, driving the scraper 26 to rotate inward around the axis of rotation of the slider 27 by a certain angle (e.g., 90 degrees). This allows the scraper 26 to completely rotate into the inner space of the inner support plate 21, thus preventing it from interfering with or scratching the inner wall of the workpiece during the subsequent expansion of the inner support plate 21. After this pre-cleaning step, the outer surface of the inner support plate 21 remains clean, ensuring the tightness and integrity when it is subsequently attached to the inner wall of cylindrical objects. This fundamentally avoids the problem of the inner support plate 21 not being able to completely attach to the inner wall of the object due to the adhesion of impurity particles, and ensures the smoothness and reliability of the subsequent synchronous rotation of the object and the connecting shaft 7.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A magnetically levitated rotating body mechanism, comprising a cover (1), characterized in that: A connecting shaft (7) is rotatably mounted at the lower center of the cover (1). A rotating body (3) is mounted at the upper end of the connecting shaft (7). A magnet fixing seat (2) is mounted on the cover (1). A fixing magnet (9) is fixedly connected to the magnet fixing seat (2). A rotating magnet (10) is mounted on the rotating body (3). Rotation shafts (5) are rotatably mounted on both sides of the rotating body (3). A magnet fixing seat (14) is mounted on the rotation shaft (5). A fixed magnet 2 (15) is provided on the fixed base 2 (14), and a rotating magnet 2 (13) is also provided on the rotating body (3). A gear 1 (4) is fixedly connected to the magnet fixed base 1 (2), and a gear 2 (6) is fixedly sleeved on the rotating shaft (5). A gear 3 (12) and a gear 4 (32) are rotatably provided on the rotating body (3). The gear 4 (32) meshes with the gear 1 (4), and the gear 2 (6) meshes with the gear 3 (12).

2. The magnetic levitation rotating body mechanism according to claim 1, characterized in that: It also includes adjustable connection components; A sliding sleeve (17) is slidably sleeved on the connecting shaft (7). Multiple connecting rods (18) are evenly distributed and rotatably arranged on the sliding sleeve (17) along the circumference. An adjusting plate (20) is rotatably arranged at one end of the connecting rod (18), and an inner support plate (21) is rotatably arranged at one end of the adjusting plate (20).

3. The magnetic levitation rotating body mechanism according to claim 2, characterized in that: A second connecting rod (19) is rotatably provided in the middle of the first connecting rod (18). One end of the second connecting rod (19) is rotatably provided on the connecting shaft (7), and the other end is fixedly connected to a limiting block (22). A groove block (23) is fixedly connected to one side of the adjusting plate (20). The limiting block (22) is embedded in the groove of the groove block (23) and slidably connected to it.

4. The magnetic levitation rotating body mechanism according to claim 2, characterized in that: The sliding sleeve (17) is threadedly connected to a threaded rod (16) on one side. Both ends of the threaded rod (16) are rotatably mounted on the connecting shaft (7). A motor (8) is fixedly connected to one side of the connecting shaft (7). The output end of the motor (8) is fixedly connected to one end of the threaded rod (16).

5. A magnetically levitated rotating body mechanism according to claim 2, characterized in that: The adjusting plate (20) has a threaded block (31) slidably connected to one side via a groove. A connecting rod (28) is rotatably provided on one side of the threaded block (31). One end of the connecting rod (28) is rotatably connected to one side of the inner support plate (21).

6. A magnetically levitated rotating body mechanism according to claim 5, characterized in that: The threaded block (31) is threadedly connected to a threaded rod (30) on one side, and both ends of the threaded rod (30) are rotatably mounted on the adjusting plate (20).

7. A magnetically levitated rotating body mechanism according to claim 6, characterized in that: The adjustment plate (20) is fixedly connected to a motor (11) on one side of its bottom, and the output end of the motor (11) is fixedly connected to one end of the threaded rod (30).

8. The magnetic levitation rotating body mechanism according to claim 1, characterized in that: It also includes components to prevent particulate impact; The anti-particle component includes a slider (27) slidably connected to one side of the inner support plate (21), and a scraper (26) is rotatably provided on one side of the slider (27), the scraper (26) being in contact with the surface of the inner support plate (21).

9. A magnetically levitated rotating body mechanism according to claim 8, characterized in that: The slider (27) is threadedly connected to a threaded rod (25) on one side. Both ends of the threaded rod (25) are rotatably mounted on the inner support plate (21). One end of the inner support plate (21) is fixedly connected to a motor (24). The output end of the motor (24) is fixedly connected to one end of the threaded rod (25).

10. A magnetically levitated rotating body mechanism according to claim 8, characterized in that: A motor (29) is fixedly connected to one side of the slider (27), and the output end of the motor (29) is fixedly connected to one end of the scraper (26).

Images