Dynamic balance self-correcting magnetic suspension motor

Abstract

A dynamic balance self-correcting magnetic suspension motor disclosed by the present invention comprises a casing, a motor shaft and two magnetic suspension bearings, the front end and the rear end of the casing are respectively provided with a front end cover and a rear end cover, and the motor shaft is coaxially and rotatably connected to the interiors of the rear end cover and the front end cover through the two magnetic suspension bearings. A correction assembly is installed in the machine shell. The electric turntable drives the mounting plate, adjusts the direction of the magnetic steel and adjusts the magnetic steel to the swing point of the motor shaft, then the linear module drives the mounting seat, the mounting seat drives the magnetic steel and adjusts the distance between the magnetic steel and the magnetic ring, when the magnetic steel is close to the magnetic ring, the magnetic steel generates thrust on the magnetic ring, and the motor shaft is subjected to corresponding thrust, so that the motor shaft is driven to swing. The position of the motor shaft is adjusted, the motor shaft drives the rotor, then acting force compensation on the rotor can be achieved, dynamic balance correction on the rotor is achieved, the stability of the motor is enhanced, the control precision of the motor is improved, and energy loss is reduced.

Description

Technical Field

[0001] The invention relates to a magnetic suspension motor, in particular to a dynamically balanced self-correcting magnetic suspension motor, belonging to the technical field of magnetic suspension motors. Background Art

[0002] The magnetic levitation motor is a high-speed motor that uses magnetic levitation bearings to make the rotor free of mechanical friction during operation, thereby effectively increasing the rotor's speed. The magnetic levitation high-speed motor avoids the friction of traditional mechanical bearings. The magnetic levitation technology can achieve long strokes and ultra-precision motion control accuracy, meeting the accuracy requirements of modern processing and measurement equipment. Due to the reduced friction loss, the magnetic levitation motor has higher efficiency during operation and can save energy.

[0003] When the magnetic levitation motor is affected by external interference factors such as airflow and vibration, its rotor will have a certain degree of position shift or change, which will further have an adverse effect on the working state of the magnetic levitation motor: Impact on motor stability: The rotor position deviation will destroy the balance state of the magnetic levitation motor, resulting in a decrease in motor stability. When running at high speed, this instability will cause vibration and noise, and in severe cases, it may even cause the motor to lose control or be damaged; Reduced control accuracy: Magnetic levitation motors are usually used in situations that require high-precision control. The rotor position offset will directly affect the control accuracy of the motor, causing the actual operating state of the motor to deviate from the expected state, thereby affecting the quality and performance of the product; Increased energy loss: The rotor position deviation will increase the energy loss of the magnetic levitation motor during operation. Due to the change in the gap between the rotor and the stator, the magnetic field is unevenly distributed, which in turn generates additional electromagnetic force, increasing the energy consumption of the motor; Therefore, a dynamic balance self-correcting magnetic levitation motor is proposed. Summary of the invention

[0004] The object of the present invention is to provide a dynamically balanced self-correcting magnetic levitation motor to solve one of the problems raised in the above background technology.

[0005] The present invention is implemented by the following technical scheme: a dynamically balanced self-correcting magnetic suspension motor, comprising a housing, a motor shaft and two magnetic suspension bearings, the front end and the rear end of the housing are respectively provided with a front cover and a rear cover, the motor shaft is respectively coaxially rotatably connected to the inside of the rear cover and the front cover through two magnetic suspension bearings, and a correction component is installed inside the housing; The calibration assembly includes a calibration seat, a mounting ring, an electric turntable, a mounting plate, a linear module, a support rod, a mounting seat and a magnetic steel; The outer wall of the correction seat is attached to the inner wall of the casing, the mounting ring is fixedly connected to the inner wall of the correction seat, the electric turntable is installed on the rear surface of the mounting ring, the mounting plate is installed on the mover of the electric turntable, the linear module is installed on the rear surface of the mounting plate, the top end of the support rod is fixedly connected to the mover of the linear module, the bottom end of the support rod is fixedly connected to the upper surface of the mounting seat, and the magnetic steel is embedded in the lower surface of the mounting seat.

[0006] As a further preferred embodiment of the present technical solution: a magnetic ring is installed on the outer side wall of the motor shaft, the linear module is perpendicular to the axis of the motor shaft, and the position of the magnetic ring corresponds to the position of the magnetic steel.

[0007] As a further preferred embodiment of the present technical solution: the calibration assembly further includes a detection seat, a spring, a displacement sensor, a sliding column, a limit seat and a contact wheel; The limit seat is fixedly connected to the outer side wall of the sliding column, the sliding column and the limit seat are both slidably connected to the inner side wall of the detection seat, one end of the displacement sensor is installed on the inner top wall of the detection seat, the other end of the displacement sensor is installed on the top end of the sliding column, the contact wheel is installed on the bottom end of the sliding column, and the spring is sleeved on the outer side wall of the sliding column.

[0008] As a further preferred embodiment of the present technical solution: one end of the spring presses against the upper surface of the limit seat, the other end of the spring presses against the inner top wall of the detection seat, the spring is sleeved on the outside of the displacement sensor, and the detection seat is installed on the inner wall of the correction seat.

[0009] As a further preferred embodiment of the technical solution: a contact ring is installed on the outer side wall of the motor shaft, the sliding column is perpendicular to the axis of the motor shaft, and the outer side wall of the contact wheel is in contact with the outer side wall of the contact ring.

[0010] As a further preferred embodiment of the present technical solution: the inner side wall of the casing is fixedly connected with a retaining ring and a limiting strip, the rear surface of the correction seat is attached to the front surface of the retaining ring, the outer side wall of the correction seat is evenly provided with limiting grooves, and the limiting strip is slidably connected to the inner side wall of the limiting groove.

[0011] As a further preferred embodiment of the present technical solution: the rear surface of the front end cover is symmetrically provided with positioning holes, the front surface of the correction seat is symmetrically fixedly connected with positioning columns, the positioning columns are slidably connected to the inner side walls of the positioning holes, and the front end cover is attached to the front surface of the correction seat.

[0012] As a further preferred embodiment of the technical solution: a stator core is installed on the inner wall of the casing, a stator winding is wound inside the stator core, and a rotor is installed on the outer wall of the motor shaft, and the rotor is located inside the stator core.

[0013] As a further preferred embodiment of the present technical solution: a cooling fan is fixedly connected to the outer wall of the motor shaft, the cooling fan is located behind the rear end cover, a protective ring is fixedly connected to the rear surface of the rear end cover, the cooling fan is located inside the protective ring, and a protective net is fixedly connected to the rear surface of the protective ring.

[0014] As a further preferred embodiment of the present technical solution: air holes are provided inside the front end cover and inside the rear end cover.

[0015] Advantages of the present invention: 1. The present invention can monitor the position of the rotor through the correction component. When the rotor is affected by external interference force, the rotor and the motor shaft will produce position deviation. The motor shaft will produce a certain amplitude of swing when rotating. When the motor shaft swings, it pushes the contact wheel. The contact wheel pushes the displacement sensor through the sliding column. The displacement sensor produces a value change, which indicates that the position of the rotor is offset at this time, thereby realizing real-time monitoring of the rotor position; 2. The present invention drives the mounting plate through an electric turntable, and the mounting plate drives the mounting seat through a support rod to adjust the orientation of the magnetic steel, adjust the magnetic steel to the swing point of the motor shaft, and then drive the mounting seat through a linear module, and the mounting seat drives the magnetic steel to adjust the distance between the magnetic steel and the magnetic ring. When the magnetic steel is close to the magnetic ring, the magnetic steel generates thrust on the magnetic ring, and the motor shaft is subjected to corresponding thrust to adjust the position of the motor shaft. The motor shaft drives the rotor, and then the force compensation for the rotor can be realized to realize the dynamic balance correction of the rotor, thereby enhancing the stability of the motor, improving the control accuracy of the motor, and reducing the energy loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of a dynamic balance self-correcting magnetic suspension motor of the present invention; Figure 2 It is a schematic diagram of the correction component structure of the present invention; Figure 3 It is a schematic diagram of the connection between the magnetic steel and the mounting seat of the present invention; Figure 4 It is a schematic diagram of the structure of the detection seat of the present invention; Figure 5 It is a schematic diagram of the installation position of the retaining ring of the present invention; Figure 6 It is a disassembly schematic diagram of the present invention; Figure 7 It is a schematic diagram of the front end cover structure of the present invention; Figure 8 It is a schematic diagram of the rear end cover structure of the present invention.

[0018] In the figure: 101, correction component; 11, correction seat; 12, limit groove; 13, positioning column; 14, mounting ring; 15, electric turntable; 16, mounting plate; 17, detection seat; 18, linear module; 19, support rod; 20, mounting seat; 21, magnet; 22, spring; 23, displacement sensor; 24, sliding column; 25, limit seat; 26, contact wheel; 31, housing; 32, front cover; 33, motor shaft; 34, magnetic bearing; 35, rear cover; 36, retaining ring; 37, magnetic ring; 38, limit strip; 39, contact ring; 40, rotor; 41, stator core; 42, stator winding; 43, protective ring; 44, cooling fan; 45, protective net; 46, positioning hole; 47, air hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Example In the prior art, when a magnetic levitation motor is affected by external interference factors such as airflow and vibration, its rotor will have a certain degree of position shift or change, which will further have an adverse effect on the working state of the magnetic levitation motor. To do this, see Figure 1-Figure 8 The present invention provides a technical solution: a dynamically balanced self-correcting magnetic suspension motor, comprising a housing 31, a motor shaft 33 and two magnetic suspension bearings 34, a front end cover 32 and a rear end cover 35 are respectively installed at the front end and the rear end of the housing 31, the motor shaft 33 is respectively connected to the rear end cover 35 and the interior of the front end cover 32 through the two magnetic suspension bearings 34, a stator core 41 is installed on the inner side wall of the housing 31, a stator winding 42 is wound inside the stator core 41, a rotor 40 is installed on the outer side wall of the motor shaft 33, and the rotor 40 is located inside the stator core 41; When the magnetic levitation motor is working, the stator winding 42 in the stator core 41 is powered, thereby driving the rotor 40 to rotate, and the rotor 40 drives the motor shaft 33, and the motor shaft 33 rotates through the magnetic levitation bearing 34. By setting the magnetic levitation bearing 34, the motor shaft 33 can be prevented from generating mechanical friction when rotating, thereby increasing the speed of the motor shaft 33. When the motor shaft 33 rotates, it drives the external load, thereby realizing the transmission of force. A calibration assembly 101 is installed inside the housing 31; The calibration assembly 101 includes a calibration seat 11, a mounting ring 14, an electric turntable 15, a mounting plate 16, a linear module 18, a support rod 19, a mounting seat 20 and a magnetic steel 21; The outer wall of the correction seat 11 is attached to the inner wall of the housing 31, the mounting ring 14 is fixedly connected to the inner wall of the correction seat 11, the electric turntable 15 is installed on the rear surface of the mounting ring 14, the mounting plate 16 is installed on the mover of the electric turntable 15, the linear module 18 is installed on the rear surface of the mounting plate 16, the top end of the support rod 19 is fixedly connected to the mover of the linear module 18, the bottom end of the support rod 19 is fixedly connected to the upper surface of the mounting seat 20, the magnetic steel 21 is embedded in the lower surface of the mounting seat 20, the outer wall of the motor shaft 33 is installed with a magnetic ring 37, the linear module 18 is perpendicular to the axis of the motor shaft 33, and the position of the magnetic ring 37 corresponds to the position of the magnetic steel 21; The correction component 101 is used to realize the position correction of the rotor 40. When working, the mounting plate 16 is driven by the electric turntable 15, and the mounting plate 16 drives the mounting seat 20 through the support rod 19, so that the orientation of the magnet 21 can be adjusted. The mounting seat 20 is driven by the linear module 18, and the mounting seat 20 drives the magnet 21, so that the distance between the magnet 21 and the magnetic ring 37 can be adjusted. When the magnet 21 is close to the magnetic ring 37, the magnet 21 generates a thrust on the magnetic ring 37, and then generates a corresponding thrust on the motor shaft 33 to adjust the position of the motor shaft 33. The motor shaft 33 drives the rotor 40, so as to realize the force compensation of the rotor 40, so as to perform dynamic balance correction on the rotor 40.

[0021] In this embodiment, specifically: the calibration assembly 101 further includes a detection seat 17, a spring 22, a displacement sensor 23, a sliding column 24, a limit seat 25 and a contact wheel 26; The limit seat 25 is fixedly connected to the outer side wall of the sliding column 24, the sliding column 24 and the limit seat 25 are both slidably connected to the inner side wall of the detection seat 17, one end of the displacement sensor 23 is installed on the inner top wall of the detection seat 17, the other end of the displacement sensor 23 is installed on the top of the sliding column 24, the contact wheel 26 is installed on the bottom end of the sliding column 24, the spring 22 is sleeved on the outer side wall of the sliding column 24, one end of the spring 22 is against the upper surface of the limit seat 25, the other end of the spring 22 is against the inner top wall of the detection seat 17, the spring 22 is sleeved on the outside of the displacement sensor 23, and the detection seat 17 is installed on the inner side wall of the correction seat 11; The calibration component 101 can also be used to monitor the position of the rotor 40; When the rotor 40 is affected by an external interference force, the rotor 40 and the motor shaft 33 will both have positional deviations, and then the rotating shaft of the motor shaft 33 and the axis of the correction seat 11 will be offset, and the motor shaft 33 will swing to a certain extent when rotating. When the motor shaft 33 swings, it pushes the contact wheel 26, and the contact wheel 26 pushes the displacement sensor 23 through the sliding column 24. The displacement sensor 23 produces a value change, which indicates that the position of the rotor 40 is offset at this time, thereby realizing the monitoring of the position of the rotor 40; The model of the displacement sensor 23 is: KTC2.

[0022] In this embodiment, specifically: a contact ring 39 is installed on the outer wall of the motor shaft 33, the sliding column 24 is perpendicular to the axis of the motor shaft 33, and the outer wall of the contact wheel 26 is in contact with the outer wall of the contact ring 39. The contact ring 39 is in contact with the contact wheel 26, so that the friction generated on the motor shaft 33 can be reduced, thereby ensuring the service life of the motor shaft 33.

[0023] In order to solve the problems existing in the prior art, the embodiment of the present invention provides a dynamically balanced self-correcting magnetic levitation motor and solves the problems through the above technical solutions: When the rotor 40 is affected by an external interference force, the rotor 40 and the motor shaft 33 are offset in position, and the motor shaft 33 swings to a certain extent when rotating. When the motor shaft 33 swings, it pushes the contact wheel 26, and the contact wheel 26 pushes the displacement sensor 23 through the sliding column 24. The displacement sensor 23 produces a numerical change, which indicates that the position of the rotor 40 is offset at this time. The mounting plate 16 is driven by the electric turntable 15, and the mounting plate 16 drives the mounting seat 20 through the support rod 19. The orientation of the magnetic steel 21 can be adjusted, and the magnetic steel 21 is adjusted to the swing point of the motor shaft 33. Then, the mounting seat 20 is driven by the linear module 18, and the mounting seat 20 drives the magnetic steel 21 to adjust the distance between the magnetic steel 21 and the magnetic ring 37. When the magnetic steel 21 is close to the magnetic ring 37, the magnetic steel 21 generates a thrust on the magnetic ring 37, and the motor shaft 33 is subjected to a corresponding thrust to adjust the position of the motor shaft 33. The motor shaft 33 drives the rotor 40, and then the force compensation for the rotor 40 can be realized to perform dynamic balance correction on the rotor 40.

[0024] In this embodiment, specifically: the inner side wall of the casing 31 is fixedly connected with a retaining ring 36 and a limiting strip 38, the rear surface of the correction seat 11 is attached to the front surface of the retaining ring 36, the outer side wall of the correction seat 11 is evenly provided with limiting grooves 12, and the limiting strip 38 is slidably connected to the inner side wall of the limiting groove 12. The retaining ring 36 can limit the front and rear positions of the correction seat 11, and the cooperation of the limiting groove 12 and the limiting strip 38 can limit the axial position of the correction seat 11, thereby enhancing the stability of the correction seat 11.

[0025] In this embodiment, specifically: the rear surface of the front end cover 32 is symmetrically provided with positioning holes 46, the front surface of the correction seat 11 is symmetrically fixedly connected with positioning columns 13, the positioning columns 13 are slidably connected to the inner side walls of the positioning holes 46, the front end cover 32 is attached to the front surface of the correction seat 11, and the positioning columns 13 and the positioning holes 46 can limit the correction seat 11. When the front end cover 32 is installed with the casing 31, the position of the correction seat 11 is fixed, and the correction seat 11 is detachably designed, which simplifies the steps of disassembly and maintenance and facilitates operation.

[0026] In this embodiment, specifically: a cooling fan 44 is fixedly connected to the outer wall of the motor shaft 33, the cooling fan 44 is located behind the rear end cover 35, a protective ring 43 is fixedly connected to the rear surface of the rear end cover 35, the cooling fan 44 is located inside the protective ring 43, and a protective net 45 is fixedly connected to the rear surface of the protective ring 43. The cooling fan 44 can be shielded by the protective ring 43 and the protective net 45 to prevent the staff from accidentally touching the cooling fan 44 and causing personal injury.

[0027] In the present embodiment, specifically: air holes 47 are provided inside the front cover 32 and inside the rear cover 35. When the motor shaft 33 rotates at high speed, the motor shaft 33 drives the cooling fan 44 to rotate, thereby generating negative pressure behind the rear cover 35. At this time, the external air flows into the casing 31 from the air holes 47 of the front cover 32, and then flows out of the casing 31 from the air holes 47 of the rear cover 35. During the air flow, the heat in the casing 31 is discharged, thereby achieving heat dissipation of the magnetic levitation motor.

[0028] The working principle or structural principle is that when in use, the stator winding 42 in the stator core 41 is powered, thereby driving the rotor 40 to rotate, and the rotor 40 drives the motor shaft 33, and the motor shaft 33 rotates through the magnetic suspension bearing 34. By setting the magnetic suspension bearing 34, the motor shaft 33 can be made to rotate without mechanical friction, thereby increasing the speed of the motor shaft 33. The motor shaft 33 drives the external load when rotating, and force transmission can be achieved. When the motor shaft 33 rotates at a high speed, it drives the cooling fan 44 to rotate, and negative pressure is generated behind the rear end cover 35. At this time, the external air flows into the casing 31 from the air hole 47 of the front end cover 32, and then flows out of the casing 31 from the air hole 47 of the rear end cover 35. During the air flow, the heat in the casing 31 is discharged, thereby achieving heat dissipation of the magnetic suspension motor. When the motor shaft 33 is affected by an external interference force, the rotor 40 and the motor shaft 33 are offset in position. The motor shaft 33 will swing to a certain extent when rotating. When the motor shaft 33 swings, it pushes the contact wheel 26. The contact wheel 26 pushes the displacement sensor 23 through the sliding column 24. The displacement sensor 23 produces a numerical change, which indicates that the position of the rotor 40 is offset. The mounting plate 16 is driven by the electric turntable 15, and the mounting plate 16 drives the mounting seat 20 through the support rod 19. The orientation of the magnetic steel 21 can be adjusted, and the magnetic steel 21 is adjusted to the swing point of the motor shaft 33. Then, the mounting seat 20 is driven by the linear module 18, and the mounting seat 20 drives the magnetic steel 21 to adjust the distance between the magnetic steel 21 and the magnetic ring 37. When the magnetic steel 21 is close to the magnetic ring 37, the magnetic steel 21 generates a thrust on the magnetic ring 37, and the motor shaft 33 is subjected to a corresponding thrust to adjust the position of the motor shaft 33. The motor shaft 33 drives the rotor 40, and then the force compensation for the rotor 40 can be achieved to perform dynamic balance correction on the rotor 40.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A dynamically balanced self-correcting magnetic levitation motor, characterized in that: The machine comprises a housing (31), a motor shaft (33) and two magnetic suspension bearings (34); a front end cover (32) and a rear end cover (35) are respectively installed at the front end and the rear end of the housing (31); the motor shaft (33) is coaxially rotatably connected to the inside of the rear end cover (35) and the front end cover (32) via the two magnetic suspension bearings (34); and a correction component (101) is installed inside the housing (31); The calibration assembly (101) comprises a calibration seat (11), a mounting ring (14), an electric turntable (15), a mounting plate (16), a linear module (18), a support rod (19), a mounting seat (20) and a magnetic steel (21); The outer wall of the correction seat (11) is attached to the inner wall of the casing (31); the mounting ring (14) is fixedly connected to the inner wall of the correction seat (11); the electric turntable (15) is mounted on the rear surface of the mounting ring (14); the mounting plate (16) is mounted on the mover of the electric turntable (15); the linear module (18) is mounted on the rear surface of the mounting plate (16); the top end of the support rod (19) is fixedly connected to the mover of the linear module (18); the bottom end of the support rod (19) is fixedly connected to the upper surface of the mounting seat (20); and the magnetic steel (21) is embedded in the lower surface of the mounting seat (20).

2. A dynamically balanced self-correcting magnetic levitation motor according to claim 1, characterized in that: A magnetic ring (37) is installed on the outer side wall of the motor shaft (33), the linear module (18) is perpendicular to the axis of the motor shaft (33), and the position of the magnetic ring (37) corresponds to the position of the magnetic steel (21).

3. The dynamic balance self-correcting magnetic levitation motor according to claim 1, characterized in that: The calibration assembly (101) further comprises a detection seat (17), a spring (22), a displacement sensor (23), a sliding column (24), a limit seat (25) and a contact wheel (26); The limit seat (25) is fixedly connected to the outer side wall of the sliding column (24); the sliding column (24) and the limit seat (25) are both slidably connected to the inner side wall of the detection seat (17); one end of the displacement sensor (23) is mounted on the inner top wall of the detection seat (17); the other end of the displacement sensor (23) is mounted on the top end of the sliding column (24); the contact wheel (26) is mounted on the bottom end of the sliding column (24); and the spring (22) is sleeved on the outer side wall of the sliding column (24).

4. A dynamically balanced self-correcting magnetic levitation motor according to claim 3, characterized in that: One end of the spring (22) presses against the upper surface of the limit seat (25), and the other end of the spring (22) presses against the inner top wall of the detection seat (17); the spring (22) is sleeved on the outside of the displacement sensor (23), and the detection seat (17) is installed on the inner side wall of the correction seat (11).

5. The dynamic balance self-correcting magnetic levitation motor according to claim 3, characterized in that: A contact ring (39) is installed on the outer side wall of the motor shaft (33); the sliding column (24) is perpendicular to the axis of the motor shaft (33); and the outer side wall of the contact wheel (26) is in contact with the outer side wall of the contact ring (39).

6. The dynamic balance self-correcting magnetic levitation motor according to claim 1, characterized in that: The inner side wall of the housing (31) is fixedly connected with a retaining ring (36) and a limiting strip (38); the rear surface of the correction seat (11) is in contact with the front surface of the retaining ring (36); the outer side wall of the correction seat (11) is evenly provided with limiting grooves (12); and the limiting strip (38) is slidably connected to the inner side wall of the limiting groove (12).

7. A dynamically balanced self-correcting magnetic levitation motor according to claim 6, characterized in that: The rear surface of the front end cover (32) is symmetrically provided with positioning holes (46), the front surface of the correction seat (11) is symmetrically fixedly connected with positioning columns (13), the positioning columns (13) are slidably connected to the inner side wall of the positioning holes (46), and the front end cover (32) is attached to the front surface of the correction seat (11).

8. The dynamic balance self-correcting magnetic levitation motor according to claim 6, characterized in that: A stator core (41) is mounted on the inner wall of the housing (31), a stator winding (42) is wound inside the stator core (41), and a rotor (40) is mounted on the outer wall of the motor shaft (33), the rotor (40) is located inside the stator core (41).

9. The dynamic balance self-correcting magnetic levitation motor according to claim 8, characterized in that: A heat dissipation fan (44) is fixedly connected to the outer wall of the motor shaft (33); the heat dissipation fan (44) is located behind the rear end cover (35); a protective ring (43) is fixedly connected to the rear surface of the rear end cover (35); the heat dissipation fan (44) is located inside the protective ring (43); and a protective net (45) is fixedly connected to the rear surface of the protective ring (43).

10. The dynamic balance self-correcting magnetic levitation motor according to claim 9, characterized in that: Air holes (47) are provided inside the front end cover (32) and inside the rear end cover (35).

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