A rare-earth permanent magnet magnetic levitation AC / DC motor

Abstract

This invention discloses a rare-earth permanent magnet levitation AC / DC motor, relating to the field of motors. It includes a frame with several heat dissipation fins on its outer wall, and a rotor inside the frame. The rotor consists of a connecting mechanism, a rotor core, a rotating shaft connected to the rotor core, and a shaft located outside the frame. A fan assembly is sleeved on the shaft. An end shell located at the rear end of the frame consists of a ventilation outer shell, a cylindrical inner shell within the ventilation outer shell, and a ventilation ring plate connecting the ventilation outer shell and the cylindrical inner shell. A dust removal mechanism is used to clean the heat dissipation fins. Several cooperating components are located on one side of the ventilation ring plate. This invention, through the coordinated use of the rotor, dust removal mechanism, and cooperating components, can automatically clean the dust on the heat dissipation fins, facilitating regular cleaning. This not only solves the problem of reduced heat dissipation efficiency due to dust accumulation on the heat dissipation fins but also significantly saves manpower and time costs.

Description

Technical Field

[0001] This invention relates to the field of motor technology, specifically to a rare-earth permanent magnet magnetic levitation AC / DC motor. Background Technology

[0002] Magnetic levitation AC / DC motors are special motors where the stator and mover operate without contact. By using a magnetic field to suspend the mover inside the pump casing, a contactless and wear-free operating state is achieved.

[0003] For example, the invention patent with patent authorization announcement number CN109167498B discloses a rare-earth permanent magnet magnetic levitation AC / DC motor, in which the rotor is located inside the stator; several stator magnets are evenly distributed in the inner ring of the stator, and several rotor magnets are evenly distributed in the outer ring of the rotor; the magnetic poles of the stator magnets and rotor magnets on the adjacent side are the same; a stator core is set between every two stator magnets, and the stator core is fixed to the inner ring of the stator, with the axial direction of the stator core along the diameter direction of the stator; a three-phase DC input winding is wound on the stator core, namely: the first stator core is wound with the first phase DC U, the second stator core adjacent to the first stator core is wound with the second phase DC V, and the third stator core adjacent to the second stator core is wound with the third phase DC W. The input terminals of U, V, and W are set as the same-name terminals, and the opposite-name terminals of the first group of U, V, and W windings are connected to the same-name terminals of the second group of U, V, and W windings, and so on in a cycle. This can reduce the friction loss during motor operation, resulting in high motor efficiency and low loss.

[0004] However, since motors mainly dissipate heat through heat dissipation fins on the casing and fans at the end of the rotor shaft, for motors exposed to the external environment, dust easily accumulates on the heat dissipation fins after prolonged use. Dust prevents direct contact between air and the fins, greatly reducing heat convection efficiency and thus reducing heat dissipation efficiency. Furthermore, the heat dissipation fins are radially distributed on the motor casing, making them difficult to clean and wasting manpower and time. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a rare-earth permanent magnet magnetic levitation AC / DC motor.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] The present invention discloses a rare earth permanent magnet magnetic levitation AC / DC motor, including a frame with a plurality of heat dissipation fins on its outer wall and a rotor inside the frame. The rotor consists of a connecting mechanism, a rotor core, a rotating shaft connected to the rotor core, and a shaft located outside the frame.

[0008] The fan blade assembly, which is sleeved on the shaft, is driven by the shaft to perform forced air cooling and can accelerate the airflow between the heat dissipation fins.

[0009] The end shell located at the rear end of the base consists of a ventilation outer shell, a cylindrical inner shell located inside the ventilation outer shell, and a ventilation ring plate for connecting the ventilation outer shell and the cylindrical inner shell;

[0010] A dust removal mechanism for cleaning heat sink fins;

[0011] Several mating components located on one side of the ventilation ring plate.

[0012] As a preferred embodiment of the present invention, the ash removal mechanism comprises an annular ash removal component, a pulling assembly, a driving assembly, and a coil spring. The annular ash removal component is provided with a plurality of brush teeth for cleaning the heat dissipation fins. The pulling assembly includes a winding rod that rotates with the cylindrical inner shell and a pulling rope wound around the winding rod. One end of the winding rod is rotatably connected to the ventilation outer shell through a bearing. The pulling rope is located between the ventilation outer shell and the cylindrical inner shell, and the free end of the pulling rope is fixed to the brush teeth, so that the pulling rope can pull the annular ash removal component to slide on the base. The coil spring is located inside the cylindrical inner shell, and its two ends are respectively connected to the winding rod and the cylindrical inner shell.

[0013] As a preferred embodiment of the present invention, the drive assembly includes a gear disk and a transmission gear meshing with the gear disk. The transmission gear is fixed to the other end of the winding rod. The gear disk is located inside the cylindrical inner shell and sleeved on the outside of the rotating shaft. The gear disk has a central hole that allows the rotating shaft to pass through. The gear disk has an annular mounting protrusion and an annular connecting protrusion coaxial with the central hole on both sides. The annular connecting protrusion has a plurality of mating openings.

[0014] As a preferred embodiment of the present invention, the mating assembly includes an adjuster and a drive spring, the adjuster being mounted on a ventilation ring plate and the drive spring being fixed to the telescopic end of the adjuster.

[0015] As a preferred embodiment of the present invention, the connecting mechanism includes a pusher, a support rod, a connecting spring, and a plug rod that can be inserted into a mating port. One end of the plug rod is provided with a contact block, the connecting spring is sleeved on the outside of the support rod, and both ends of the connecting spring are respectively connected to the contact block and the rotating shaft. The plug rod and the contact block are both provided with sliding holes that slide with the support rod.

[0016] As a preferred embodiment of the present invention, the rotating shaft is rotatably mounted on the base, one end of the rotating shaft is detachably connected to the shaft rod, and one end of the rotating shaft is provided with an installation groove for providing space for the operation of the pusher. The installation groove is provided with two installation holes that slide with the insertion rod, and the support rod is detachably installed in the installation groove.

[0017] As a preferred embodiment of the present invention, a fixed bracket is installed at one end of the base, and the annular mounting protrusion is rotatably connected to the fixed bracket through a bearing.

[0018] As a preferred embodiment of the present invention, fixed blocks are symmetrically provided on the inner wall of the ventilation shell and the outer wall of the cylindrical inner shell. Two movable columns are rotatably connected between the two fixed blocks, and the gap between the two movable columns is large enough for the pulling rope to pass through.

[0019] As a preferred embodiment of the present invention, one end of the base is provided with a mounting flange for detachable connection with the ventilation housing, and the mounting flange is provided with a ventilation opening that can accommodate brush teeth.

[0020] As a preferred embodiment of the present invention, a stator core is installed inside the frame, and the rotor rotates in conjunction with the stator core.

[0021] The beneficial effects of this invention are:

[0022] 1. This rare-earth permanent magnet levitation AC / DC motor, through the coordinated use of the rotor, dust removal mechanism and auxiliary components, can automatically clean the dust on the heat sink fins, which is convenient for regular cleaning of the heat sink fins. It not only solves the problem of reduced heat dissipation efficiency caused by dust covering the heat sink fins, but also greatly saves manpower and time costs.

[0023] 2. This rare-earth permanent magnet levitation AC / DC motor uses a pusher to drive a contact block, which in turn inserts a rod into the mating port. When the shaft rotates, the rod drives the gear disk to rotate. After the pusher resets, the connecting spring's elasticity disengages the rod from the mating port, ensuring that the rotation of the shaft and the gear disk do not interfere with each other. This allows the annular dust removal component to move smoothly under the drive of the spring.

[0024] 3. This rare-earth permanent magnet levitation AC / DC motor can adjust the position of the drive spring by adjusting the length of the regulator. The drive spring is deformed by the pressure of the brush teeth, so the elastic force of the drive spring will also change due to the different positions of the drive spring. By adjusting the elastic force of the drive spring, the annular dust removal component can slide smoothly on the base without detaching from the base, thus ensuring the smooth operation of the dust removal.

[0025] 4. This rare-earth permanent magnet levitation AC / DC motor has ventilation openings to allow airflow. Therefore, when the fan blade assembly rotates, it can accelerate the airflow between the heat dissipation fins, improve the heat dissipation effect, and remove the dust swept off the heat dissipation fins, effectively preventing the dust from falling back onto the heat dissipation fins. Since the brush teeth can be inserted into the ventilation openings, the ventilation openings can be cleaned by moving the brush teeth, which can greatly reduce the possibility of the ventilation openings becoming blocked.

[0026] 5. This rare-earth permanent magnet levitation AC / DC motor guides the traction rope through two rotatably connected movable columns, ensuring the directional movement of the traction rope pulling the annular ash removal component or the drive spring driving the annular ash removal component, thereby improving the stability of the ash removal mechanism's operation. Attached Figure Description

[0027] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0028] Figure 1 This is a schematic diagram of the structure of a rare-earth permanent magnet magnetic levitation AC / DC motor according to the present invention;

[0029] Figure 2 This is a schematic diagram of the internal structure of a rare-earth permanent magnet magnetic levitation AC / DC motor according to the present invention;

[0030] Figure 3 This is a schematic diagram of the frame and fixed support structure of a rare earth permanent magnet magnetic levitation AC / DC motor according to the present invention;

[0031] Figure 4 This is a schematic diagram of the rotor structure of a rare-earth permanent magnet magnetic levitation AC / DC motor according to the present invention.

[0032] Figure 5 This is a three-dimensional cross-sectional view of the shaft and axle of a rare-earth permanent magnet magnetic levitation AC / DC motor according to the present invention;

[0033] Figure 6 This is a schematic diagram of the internal structure of the end shell of a rare-earth permanent magnet magnetic levitation AC / DC motor according to the present invention.

[0034] Figure 7 This is a schematic diagram of the connection structure of the end shell, winding rod and coil spring of a rare earth permanent magnet magnetic levitation AC / DC motor according to the present invention.

[0035] Figure 8 This invention relates to a rare-earth permanent magnet levitation AC / DC motor. Figure 7 Enlarged view of point A in the middle;

[0036] Figure 9 This is a schematic diagram of the ash removal mechanism, rotating shaft, and shaft structure of a rare-earth permanent magnet magnetic levitation AC / DC motor according to the present invention.

[0037] Figure 10 This is a schematic diagram of the gear disk structure of a rare-earth permanent magnet magnetic levitation AC / DC motor according to the present invention.

[0038] In the diagram: 1. Base; 11. Mounting flange; 12. Ventilation opening; 2. End shell; 21. Ventilation outer shell; 22. Cylindrical inner shell; 23. Ventilation ring plate; 24. Fixing block; 25. Movable column; 3. Stator core; 4. Fan blade assembly; 5. Fixed bracket; 6. Ash removal mechanism; 61. Annular ash removal component; 62. Pull rope; 63. Transmission gear; 64. Coil spring; 65. Winding rod; 66. Gear disc; 661. Annular connecting protrusion; 662. Annular mounting protrusion; 663. Mating port; 7. Rotor; 71. Shaft; 72. Shaft rod; 73. Rotor core; 74. Support rod; 75. Connecting spring; 76. Insert rod; 77. Contact block; 78. Pusher; 8. Mating assembly; 81. Adjuster; 82. Drive spring. Detailed Implementation

[0039] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0040] Example: Figure 1 , Figure 2 and Figure 4 As shown, the present invention discloses a rare earth permanent magnet magnetic levitation AC / DC motor, including a base 1 with a plurality of heat dissipation fins on its outer wall, and a rotor 7 inside the base 1. The rotor 7 consists of a connecting mechanism, a rotor core 73, a rotating shaft 71 connected to the rotor core 73, and a shaft 72 located outside the base 1.

[0041] The fan blade assembly 4 is sleeved outside the shaft 72. The fan blade assembly 4 is driven by the shaft 72 to perform forced air cooling and can accelerate the air flow between the heat dissipation fins.

[0042] The end shell 2 located at the rear end of the base 1 consists of a ventilation outer shell 21, a cylindrical inner shell 22 located inside the ventilation outer shell 21, and a ventilation ring plate 23 for connecting the ventilation outer shell 21 and the cylindrical inner shell 22.

[0043] Dust removal mechanism 6 for cleaning heat sink fins;

[0044] Several mating components 8 are located on one side of the ventilation ring plate 23.

[0045] In this embodiment, the ventilation housing 21 has a reserved hole for installing a conductive slip ring. The conductive slip ring is used to electrically connect with the pusher 78. The pusher 78 is electrically connected to the motor controller through the conductive slip ring, and the operation of the pusher 78 is controlled by the motor controller.

[0046] Among them, such as Figure 2 and Figures 7-10As shown, the dust removal mechanism 6 consists of an annular dust removal component 61, a pulling assembly, a driving assembly, and a coil spring 64. The annular dust removal component 61 is provided with several brush teeth for cleaning the heat dissipation fins. The pulling assembly includes a winding rod 65 that rotatably engages with the cylindrical inner shell 22 and a pulling rope 62 wound around the winding rod 65. One end of the winding rod 65 is rotatably connected to the ventilation outer shell 21 via a bearing. The pulling rope 62 is located between the ventilation outer shell 21 and the cylindrical inner shell 22. During this process, the free end of the pull rope 62 is fixed to the brush teeth, allowing the pull rope 62 to pull the annular dust removal component 61 to slide on the base 1. The coil spring 64 is located inside the cylindrical inner shell 22, with both ends of the coil spring 64 connected to the winding rod 65 and the cylindrical inner shell 22, respectively. The rotating winding rod 65 causes the coil spring 64 to deform. After the insertion rod 76 disengages from the mating port 663, the coil spring 64 drives the winding rod 65 to reverse and perform the wire feeding operation, allowing the annular dust removal component 61 to move smoothly.

[0047] The drive assembly includes a gear disk 66 and a transmission gear 63 meshing with the gear disk 66. The transmission gear 63 is fixed to the other end of the winding rod 65. The gear disk 66 is located inside the cylindrical inner shell 22 and sleeved on the outside of the rotating shaft 71. The gear disk 66 has a central hole that allows the rotating shaft 71 to pass through. On both sides of the gear disk 66, there are annular mounting protrusions 662 and annular connecting protrusions 661 that are coaxial with the central hole. The annular connecting protrusions 661 have a plurality of mating ports 663. There is more than one mating port 663, which facilitates the insertion of the insertion rod 76 into the mating port 663.

[0048] The meshing transmission between the rotating gear disk 66 and the transmission gear 63 drives the winding rod 65 to rotate, allowing the pull rope 62 to pull the annular dust removal component 61 to slide on the base 1. The brush teeth clean the dust on the heat dissipation fins. At the same time, the rotating winding rod 65 causes the coil spring 64 to deform. After the brush teeth squeeze the drive spring 82 and enter the ventilation port 12, the pusher 78 resets, and the insertion rod 76 disengages from the mating port 663. At this time, the annular dust removal component 61 moves in the opposite direction under the elastic force of the drive spring 82. The coil spring 64 drives the winding rod 65 to reverse and perform the wire feeding operation, allowing the annular dust removal component 61 to move smoothly. After repeating this process multiple times, the dust on the heat dissipation fins can be cleaned automatically, which is convenient for regular cleaning of the heat dissipation fins. This not only solves the problem of reduced heat dissipation efficiency caused by dust covering the heat dissipation fins, but also greatly saves manpower and time costs.

[0049] Among them, such as Figure 2 and Figure 6As shown, the mating component 8 includes an adjuster 81 and a drive spring 82. The adjuster 81 is mounted on the ventilation ring plate 23, and the drive spring 82 is fixed to the telescopic end of the adjuster 81. By adjusting the length of the adjuster 81, the position of the drive spring 82 can be adjusted. The drive spring 82 is deformed by the pressure of the brush teeth, so the elastic force of the drive spring 82 will also change due to the different positions of the drive spring 82. By adjusting the elastic force of the drive spring 82, the annular dust removal component 61 can slide smoothly on the base 1 without detaching from the base 1, thus ensuring the smooth progress of the dust removal operation.

[0050] In this embodiment, the regulator 81 can be a manually adjustable telescopic structure or an electrically telescopic structure. The specific structure of the regulator 81 is not limited here.

[0051] Among them, such as Figure 4 , Figure 5 and Figure 9 As shown, the connecting mechanism includes a pusher 78, a support rod 74, a connecting spring 75, and a plug rod 76 that can be inserted into the mating port 663. One end of the plug rod 76 is provided with a contact block 77. The connecting spring 75 is sleeved on the support rod 74. The two ends of the connecting spring 75 are respectively connected to the contact block 77 and the rotating shaft 71. The plug rod 76 and the contact block 77 are both provided with sliding holes that slide with the support rod 74. In addition to connecting the plug rod 76, the connecting spring 75 can also reset the plug rod 76.

[0052] The pusher 78 pushes the contact block 77, which in turn squeezes the connecting spring 75 and moves the insert rod 76 outward from the rotating shaft 71, allowing the insert rod 76 to be inserted into the mating port 663. When the rotating shaft 71 rotates, the insert rod 76 drives the gear disk 66 to rotate. After the pusher 78 resets, the elastic force of the connecting spring 75 causes the insert rod 76 to disengage from the mating port 663, ensuring that the rotation of the rotating shaft 71 and the rotation of the gear disk 66 do not interfere with each other, allowing the annular dust removal component 61 to move smoothly under the drive of the drive spring 82.

[0053] In this embodiment, the pusher 78 can be an electric push rod or a cam structure. The pusher 78 can be installed in a mounting slot or on the shaft 72. Therefore, the specific installation method and position of the pusher 78 are not limited. Figure 5 As shown, this solution adopts a cam structure. The cam is rotated by an electric motor, and the long end of the cam pushes the contact block 77, which ultimately causes the insertion rod 76 to move outward toward the rotating shaft 71. In the above technical solution, the electric motor is fixed on the shaft 72, and the cam is installed at the output end of the electric motor.

[0054] Among them, such as Figure 2 , Figure 3 and Figure 5 As shown, the rotating shaft 71 is rotatably mounted on the base 1. One end of the rotating shaft 71 is detachably connected to the shaft 72. One end of the rotating shaft 71 is provided with an installation groove for providing space for the operation of the pusher 78. The installation groove is connected to two installation holes that slide with the insertion rod 76. The support rod 74 is detachably installed in the installation groove. The support rod 74 can be connected by a thread or by other detachable connection methods such as snap-fit.

[0055] It should be noted that the shaft 72 is also provided with a wire hole that allows wires to pass through, which facilitates the connection between the pusher 78 and the conductive slip ring.

[0056] Among them, such as Figure 2 and Figure 3 As shown, a fixed bracket 5 is installed at one end of the base 1, and the annular mounting protrusion 662 is rotatably connected to the fixed bracket 5 through a bearing, and the fixed bracket 5 provides support for the installation of the gear disk 66.

[0057] Among them, such as Figure 7 and Figure 8 As shown, fixed blocks 24 are symmetrically provided on the inner wall of the ventilation shell 21 and the outer wall of the cylindrical inner shell 22. Two movable columns 25 are rotatably connected between the two fixed blocks 24. The gap between the two movable columns 25 can allow the pulling rope 62 to pass through. The pulling rope 62 is guided by the two rotatably connected movable columns 25 to ensure the directionality of the pulling rope 62 pulling the annular dust removal component 61 or the driving spring 82 driving the annular dust removal component 61 to move, thereby improving the stability of the dust removal mechanism 6 operation.

[0058] Among them, such as Figure 3 As shown, one end of the base 1 is provided with a mounting flange 11 for detachable connection with the ventilation housing 21. The ventilation housing 21 and the mounting flange 11 can be connected by bolts or other stable detachable methods. The mounting flange 11 is provided with a vent 12 that can accommodate brush teeth. The vent 12 is provided to allow airflow to pass through, so when the fan assembly 4 rotates, it can accelerate the airflow between the heat dissipation fins, improve the heat dissipation effect, and also remove the dust swept off the heat dissipation fins, which can effectively prevent the swept dust from falling back onto the heat dissipation fins. Since the brush teeth can be inserted into the vent 12, the vent 12 can be cleaned by moving the brush teeth, which can greatly reduce the possibility of the vent 12 becoming blocked.

[0059] Among them, such as Figure 2As shown, a stator core 3 is installed inside the base 1, and the rotor 7 is rotatably coupled with the stator core 3. Several stator magnets are provided on the inner wall of the stator core 3, and several windings are wound on the stator core 3. Several rotor magnets are embedded on the outside of the rotor core 73. The rotor 7 is suspended by the repulsive magnetic field between the rotor magnets and the stator magnets. A rotating magnetic field that enables the rotor 7 to rotate is generated by energizing the windings.

[0060] During operation, the pusher 78 pushes the contact block 77, which in turn compresses the connecting spring 75 and moves the insert rod 76 outward from the rotating shaft 71, allowing the insert rod 76 to insert into the mating port 663. As the rotating shaft 71 rotates, the insert rod 76 drives the gear disc 66 to rotate. Through the meshing of the rotating gear disc 66 and the transmission gear 63, the winding rod 65 rotates, causing the pull rope 62 to pull the annular dust removal component 61 to slide on the base 1. The brush teeth clean the dust on the heat dissipation fins. Simultaneously, the rotating winding rod 65 deforms the coil spring 64, causing the brush teeth to compress the drive spring 82 and enter the ventilation port 12. Afterwards, the pusher 78 resets, and the insertion rod 76 disengages from the mating port 663. At this time, the annular dust removal component 61 moves in the opposite direction under the elastic force of the drive spring 82. The coil spring 64 drives the winding rod 65 to reverse and perform the wire feeding operation, so that the annular dust removal component 61 can move smoothly. After repeating this process multiple times, the dust on the heat dissipation fins can be cleaned automatically. When the rotating shaft 71 rotates, it will also drive the fan blade assembly 4 to rotate. In conjunction with the set ventilation port 12, it can accelerate the airflow between the heat dissipation fins, improve the heat dissipation effect, and also remove the dust swept off the heat dissipation fins. Since the brush teeth can be inserted into the ventilation port 12, the ventilation port 12 can also be cleaned by the moving brush teeth.

[0061] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rare-earth permanent magnet levitation AC / DC motor, characterized in that, include: The base (1) has several heat dissipation fins on its outer wall and a rotor (7) inside the base (1). The rotor (7) consists of a connecting mechanism, a rotor core (73), a rotating shaft (71) connected to the rotor core (73), and a shaft (72) located outside the base (1). The fan blade assembly (4) is sleeved outside the shaft (72). The fan blade assembly (4) is driven by the shaft (72) to perform forced air cooling and can accelerate the air flow between the heat dissipation fins. The end shell (2) located at the rear end of the base (1) consists of a ventilation outer shell (21), a cylindrical inner shell (22) located inside the ventilation outer shell (21), and a ventilation ring plate (23) for connecting the ventilation outer shell (21) and the cylindrical inner shell (22); Dust removal mechanism (6) for cleaning heat sink fins; Several mating components (8) are located on one side of the ventilation ring plate (23); The dust removal mechanism (6) consists of an annular dust removal component (61), a pulling assembly, a driving assembly, and a coil spring (64). The annular dust removal component (61) is provided with several brush teeth for cleaning the heat dissipation fins. The pulling assembly includes a winding rod (65) that rotates with the cylindrical inner shell (22) and a pulling rope (62) wound around the winding rod (65). One end of the winding rod (65) is rotatably connected to the ventilation shell (21) through a bearing. The pulling rope (62) is located between the ventilation shell (21) and the cylindrical inner shell (22). The free end of the pulling rope (62) is fixed to the brush teeth, so that the pulling rope (62) can pull the annular dust removal component (61) to slide on the base (1). The coil spring (64) is located inside the cylindrical inner shell (22). The two ends of the coil spring (64) are respectively connected to the winding rod (65) and the cylindrical inner shell (22). The drive assembly includes a gear disk (66) and a transmission gear (63) meshing with the gear disk (66). The transmission gear (63) is fixed to the other end of the winding rod (65). The gear disk (66) is located inside the cylindrical inner shell (22) and sleeved on the outside of the rotating shaft (71). The gear disk (66) has a central hole that allows the rotating shaft (71) to pass through. The gear disk (66) has an annular mounting protrusion (662) and an annular connecting protrusion (661) coaxial with the central hole on both sides. The annular connecting protrusion (661) has several mating ports (663). The mating assembly (8) includes an adjuster (81) and a drive spring (82). The adjuster (81) is mounted on the ventilation ring plate (23), and the drive spring (82) is fixed to the telescopic end of the adjuster (81). The connecting mechanism includes a pusher (78), a support rod (74), a connecting spring (75), and a plug rod (76) that can be inserted into the mating port (663). One end of the plug rod (76) is provided with a contact block (77). The connecting spring (75) is sleeved on the support rod (74). The two ends of the connecting spring (75) are respectively connected to the contact block (77) and the rotating shaft (71). The plug rod (76) and the contact block (77) are both provided with sliding holes that slide with the support rod (74).

2. The rare-earth permanent magnet levitation AC / DC motor according to claim 1, characterized in that, The rotating shaft (71) is rotatably mounted on the base (1). One end of the rotating shaft (71) is detachably connected to the shaft (72). One end of the rotating shaft (71) is provided with an installation groove for providing space for the operation of the pusher (78). The installation groove is provided with two installation holes that slide with the insertion rod (76). The support rod (74) is detachably installed in the installation groove.

3. The rare-earth permanent magnet levitation AC / DC motor according to claim 1, characterized in that, A fixed bracket (5) is installed at one end of the base (1), and the annular mounting protrusion (662) is rotatably connected to the fixed bracket (5) through a bearing.

4. A rare-earth permanent magnet levitation AC / DC motor according to claim 1, characterized in that, The inner wall of the ventilation shell (21) and the outer wall of the cylindrical inner shell (22) are symmetrically provided with fixing blocks (24). Two movable columns (25) are rotatably connected between the two fixing blocks (24), and the gap between the two movable columns (25) can accommodate the pulling rope (62) to pass through.

5. A rare-earth permanent magnet levitation AC / DC motor according to claim 1, characterized in that, The base (1) has a mounting flange (11) at one end for detachable connection with the ventilation housing (21), and the mounting flange (11) has a ventilation opening (12) for accommodating brush teeth.

6. A rare-earth permanent magnet levitation AC / DC motor according to claim 1, characterized in that, The stator core (3) is installed inside the base (1), and the rotor (7) rotates in conjunction with the stator core (3).

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