Variable position magnetic levitation direct drive motor structure assembly
By introducing structures such as air supply ducts, heat dissipation fins, and wind deflectors into the magnetic levitation direct drive motor, the problem of stator coil overheating in the magnetic levitation direct drive motor is solved, achieving more efficient heat dissipation and motor stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- DONGGUAN DIRECT DRIVE TECH LTD
- Filing Date
- 2022-12-21
- Publication Date
- 2026-05-12
AI Technical Summary
Due to the high torque density, the stator coils of magnetic levitation permanent magnet direct drive motors generate heat, requiring an effective cooling system to improve motor performance.
A variable position magnetic levitation direct drive motor structure assembly was designed, including components such as air source duct, heat dissipation fins, heat dissipation fan blades and windproof plate. Uniform heat dissipation is achieved through air cooling and structural optimization to avoid hot air blowing directly onto key components.
It improves the heat dissipation and reliability of the magnetic levitation direct drive motor, reduces heat contact between key components, and enhances the stability and reliability of the motor.
Smart Images
Figure CN116014957B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of direct drive motor technology, specifically to a variable position magnetic levitation direct drive motor structure assembly. Background Technology
[0002] Direct-drive motors, short for direct-drive motors, primarily refer to motors that drive loads without requiring a transmission device (such as a drive belt). Direct-drive motors overcome the shortcomings of traditional low-speed motors + gearbox or belt drive systems, such as high energy consumption, high noise, high vibration, and numerous failure points, achieving significant efficiency improvements, energy savings, and noise reduction. Based on the working principle of the rotor, direct-drive motors can be divided into permanent magnet type (including permanent magnet synchronous and permanent magnet brushless DC) and AC asynchronous type. Because permanent magnet motors have high power density, lower rotor heat generation, better speed and torque characteristics, and higher operating efficiency, they are more energy-efficient than asynchronous motors and more suitable for high-speed applications.
[0003] The bearings used in direct-drive motors include rolling bearings, fluid bearings, air bearings, and magnetic bearings. Among them, magnetic bearings offer advantages such as contactless support, no need for lubrication or sealing, low vibration transmitted from the shaft to the foundation, long service life, and low maintenance costs, making them more competitive than other bearing types in engineering. The working principle of a magnetic bearing is as follows: a displacement sensor detects the radial and axial displacement of the shaft. Based on the magnitude of the shaft's deviation from its equilibrium position, a controller adjusts the current in the magnetic bearing coil, thereby changing the electromagnetic force and pulling the shaft back to its equilibrium position. The magnetic bearings in a magnetic levitation direct-drive motor include both radial and thrust bearings, and sensors that detect both radial and axial displacement of the shaft. To prevent the rotor system from falling and damaging the magnetic bearings due to gravity in the event of motor stoppage or magnetic bearing failure, the magnetic levitation high-speed motor is also equipped with auxiliary bearings.
[0004] Magnetic levitation permanent magnet direct drive motors are generally designed for torque output, but high torque density greatly increases the heat generation of the stator coils. Therefore, the design of such motors needs to focus on the cooling and heat dissipation system. Thus, we propose a variable position magnetic levitation direct drive motor structure assembly. Summary of the Invention
[0005] This invention provides a variable position magnetic levitation direct drive motor structure assembly, which has the following advantages: it solves the problem mentioned in the background art that magnetic levitation permanent magnet direct drive motors are generally designed for torque output, and the high torque density greatly increases the heat generation of the stator coils of the magnetic levitation direct drive motor. Therefore, the design of such motors needs to focus on the cooling and heat dissipation system.
[0006] This invention provides the following technical solution: a variable position magnetic levitation direct drive motor structure assembly, comprising a magnetic levitation direct drive motor body, wherein a magnetic levitation direct drive motor stator, a magnetic levitation direct drive motor rotor, a sensor, a thrust magnetic levitation bearing, a first radial magnetic levitation bearing, and a second radial magnetic levitation bearing are disposed inside the magnetic levitation direct drive motor body. The magnetic levitation direct drive motor stator is fixedly installed on the inner wall of the magnetic levitation direct drive motor body, and the magnetic levitation direct drive motor rotor rotates through the magnetic levitation direct drive motor body and is coaxially arranged with the magnetic levitation direct drive motor body. The first radial magnetic levitation bearing and the thrust magnetic levitation bearing are both installed at the tail end of the magnetic levitation direct drive motor rotor, and the second radial magnetic levitation bearing is installed at the other end of the magnetic levitation direct drive motor rotor. A mounting plate is connected to the outer side of the magnetic levitation direct drive motor body, and a slider is installed on the side of the mounting plate. A fixing cylinder is disposed on the outer side of the magnetic levitation direct drive motor body, and the slider is slidably installed on the inner wall of the fixing cylinder. An air source duct is connected above the fixing cylinder.
[0007] As an optional embodiment of the variable position magnetic levitation direct drive motor structure assembly described in this invention, the back side of the fixed cylinder is an open end, and a heat dissipation fan blade is installed at the tail end of the magnetic levitation direct drive motor body, with the air outlet direction of the heat dissipation fan blade being the tail end of the magnetic levitation direct drive motor body.
[0008] As an optional solution for the variable position magnetic levitation direct drive motor structure assembly described in this invention, the outer side of the magnetic levitation direct drive motor body is provided with a plurality of heat dissipation fins, the plurality of heat dissipation fins are distributed in a circumferential array, and the heat dissipation fins are made of aluminum sheets.
[0009] As an optional solution for the variable position magnetic levitation direct drive motor structure assembly described in this invention, wherein: an auxiliary mounting plate is provided on the back side of the fixed cylinder, a shifting motor is mounted on the upper side of the auxiliary mounting plate, the output shaft of the shifting motor is connected to an eccentric coupling, the other side of the eccentric coupling is connected to a drive shaft, and the drive shaft is inserted into the slider.
[0010] As an optional solution for the variable position magnetic levitation direct drive motor structure assembly described in this invention, the displacement motor is coaxially arranged with the main body of the magnetic levitation direct drive motor, the transmission shaft is connected to the side wall of the slider, and a ventilation opening is provided in the middle of the bottom of the slider.
[0011] As an optional solution for the variable position magnetic levitation direct drive motor structure assembly described in this invention, a windproof plate is installed on the outer side of the middle part of the output shaft of the transposition motor. The windproof plate is configured as a frustum-shaped curved plate. Several horizontal connecting rods are installed on the back side of the windproof plate, and the other end of the several horizontal connecting rods is connected to the side wall of the transposition motor.
[0012] As an optional solution for the variable position magnetic levitation direct drive motor structure assembly described in this invention, a plurality of ball bearings are rolledly installed on the side of the windproof plate, and the ball bearings are rolledly engaged with the output shaft of the transposition motor.
[0013] As an optional solution for the variable position magnetic levitation direct drive motor structure assembly described in this invention, wherein: an anti-electromagnetic interference shaft is installed at the front end of the fixed cylinder, the anti-electromagnetic interference shaft is coaxially arranged with the fixed cylinder, and the anti-electromagnetic interference shaft is set as a carbon fiber cylinder.
[0014] As an optional solution for the variable position magnetic levitation direct drive motor structure assembly described in this invention, the inner wall of the fixed cylinder is provided with a sliding groove, and the slider is slidably connected to the sliding groove.
[0015] As an optional solution for the variable position magnetic levitation direct drive motor structure assembly described in this invention, the slider is configured as a rectangular block, with both ends of the slider located in the slide groove, the middle part of the slider being in clearance fit with the fixed cylinder, and pulleys being rotatably mounted at both ends of the slider, the pulleys rolling and fitting against the slide groove.
[0016] The present invention has the following beneficial effects:
[0017] 1. This variable-position magnetic levitation direct-drive motor assembly, by setting an air source duct at the top of the fixed cylinder, can introduce cool air to dissipate heat from the main body of the magnetic levitation direct-drive motor. Through the sliding engagement between the slider and the fixed cylinder, when the shifting motor is running, the output shaft of the shifting motor drives the eccentric coupling to rotate, thereby causing the transmission shaft to rotate around the output shaft of the shifting motor. The shifting motor and the main body of the magnetic levitation direct-drive motor are coaxially set, so the rotation of the transmission shaft around the main body of the magnetic levitation direct-drive motor causes the slider to rotate along the fixed cylinder. In this way, the position of the rotor of the magnetic levitation direct-drive motor remains unchanged, but it rotates on its own. When the main body of the magnetic levitation direct-drive motor rotates, the position of the outlet of the air source duct changes, thus allowing the fresh air from the air source duct to contact the surface of the main body of the magnetic levitation direct-drive motor more evenly, further improving the heat dissipation effect of the main body of the magnetic levitation direct-drive motor and the reliability of the magnetic levitation direct-drive motor assembly.
[0018] 2. This variable-position magnetic levitation direct drive motor assembly, through the arrangement of heat dissipation fins, can significantly increase the heat dissipation area on the surface of the magnetic levitation direct drive motor body, thereby improving the effect of air cooling. By installing cooling fan blades inside the magnetic levitation direct drive motor body, when the magnetic levitation direct drive motor body is running, the rotor of the magnetic levitation direct drive motor rotates, causing the electric cooling fan blades of the rotor of the magnetic levitation direct drive motor to rotate, thereby blowing the heat inside the magnetic levitation direct drive motor body to the tail end, reducing the heat generation inside the magnetic levitation direct drive motor body and improving the heat dissipation effect of the magnetic levitation direct drive motor body.
[0019] 3. The variable position magnetic levitation direct drive motor structure assembly, by installing a wind deflector in the middle of the output shaft of the switching motor and setting the wind deflector as a curved frustum shape, allows the air blown out by the main body of the magnetic levitation direct drive motor in front of the switching motor to be blown away along the curve of the wind deflector, instead of blowing directly onto the switching motor. This reduces the heat contact of the switching motor, improves the operating environment of the switching motor, and enhances the stability and reliability of the entire magnetic levitation direct drive motor structure assembly. Attached Figure Description
[0020] Figure 1 This is a frontal three-dimensional structural diagram of the present invention.
[0021] Figure 2 This is a rear-view three-dimensional structural diagram of the present invention.
[0022] Figure 3 This is a side view of the structure of the present invention.
[0023] Figure 4 This is a schematic diagram of the cross-sectional structure of the magnetic levitation direct drive motor of the present invention.
[0024] Figure 5 This is a partial cross-sectional structural diagram of the present invention.
[0025] Figure 6 This is a schematic diagram of the cross-sectional structure after the position change of the present invention.
[0026] Figure 7 This is a schematic diagram of the fixed cylinder cross-section structure of the present invention.
[0027] In the diagram: 100, main body of the magnetic levitation direct drive motor; 110, rotor of the magnetic levitation direct drive motor; 120, stator of the magnetic levitation direct drive motor; 130, thrust magnetic levitation bearing; 140, first radial magnetic levitation bearing; 150, second radial magnetic levitation bearing; 160, sensor; 170, cooling fan blades; 180, mounting plate; 190, cooling fins; 200, fixed cylinder; 201, slide groove; 210, slider; 211, ventilation opening; 212, pulley; 220, air source duct; 230, anti-electromagnetic interference shaft cylinder; 240, drive shaft; 250, eccentric coupling; 260, windproof plate; 261, ball bearing; 270, horizontal connecting rod; 280, auxiliary mounting plate; 290, transposition motor. Detailed Implementation
[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below 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.
[0029] Example 1
[0030] This embodiment aims to address the issue that magnetic levitation permanent magnet direct drive motors are generally designed for torque output. However, high torque density significantly increases the heat generated by the stator coils of such motors. Therefore, the design of this type of motor requires careful consideration of the cooling and heat dissipation system. Please refer to [link to relevant documentation]. Figures 1-7 A variable-position magnetic levitation direct drive motor assembly includes a magnetic levitation direct drive motor body 100. Inside the magnetic levitation direct drive motor body 100 are a magnetic levitation direct drive motor stator 120, a magnetic levitation direct drive motor rotor 110, a sensor 160, a thrust magnetic levitation bearing 130, a first radial magnetic levitation bearing 140, and a second radial magnetic levitation bearing 150. The magnetic levitation direct drive motor stator 120 is fixedly mounted on the inner wall of the magnetic levitation direct drive motor body. The magnetic levitation direct drive motor rotor 110 rotatably passes through the magnetic levitation direct drive motor body 100 and is coaxially arranged with the magnetic levitation direct drive motor body 100. The first radial magnetic levitation bearing 140 and the thrust magnetic levitation bearing 130 are both mounted at the tail end of the magnetic levitation direct drive motor rotor 110, and the second radial magnetic levitation bearing 150 is mounted at the other end of the magnetic levitation direct drive motor rotor 110.
[0031] Sensor 160 is configured as a position sensor, specifically installed at both ends of the first and second ends of the magnetic levitation direct drive motor rotor 110. The detection end of one sensor 160 faces the outer circular surface of the thrust magnetic levitation bearing 130, and the detection end of the other sensor 160 faces the end face of the second radial magnetic levitation bearing 150. This effectively utilizes the radial and axial space of the magnetic levitation direct drive motor rotor shaft system, making the rotor shaft system structure more compact, which is conducive to improving the critical speed of the magnetic levitation direct drive motor rotor shaft system. It can simultaneously detect the displacement of the two axial end faces and comprehensively evaluate the magnitude of the thermal expansion of the shaft, thereby providing a basis for precise control of the axial balance position.
[0032] The magnetic levitation bearing motor utilizes radial and axial magnets mounted on the rotor 110 of the magnetic levitation direct drive motor to induce a magnetic field in the rotating rotor. The interaction between these magnetic fields levitates the rotating rotor, avoiding the mechanical problems caused by contact friction between the shaft and bearing in traditional motors, thus freeing the motor's speed from bearing limitations. Magnetic levitation permanent magnet direct drive motors are mature existing technology; therefore, the specific working principle, installation method, and selection of sensor model 160 are clear, complete, and feasible for those skilled in the art.
[0033] A mounting plate 180 is connected to the outer side of the magnetic levitation direct drive motor body 100. A slider 210 is bolted to the side of the mounting plate 180. A fixing cylinder 200 is provided on the outer side of the magnetic levitation direct drive motor body 100. Specifically, the back side of the fixing cylinder 200 is open, and the fixing cylinder 200 is made of aluminum. The inner wall of the fixing cylinder 200 is coated with a layer of graphene to facilitate heat dissipation.
[0034] The slider 210 is slidably installed on the inner wall of the fixed cylinder 200. The upper part of the fixed cylinder 200 is connected to the air source duct 220, which is connected to a natural air source or a cold air source.
[0035] An auxiliary mounting plate 280 is provided on the back side of the fixed cylinder 200. A shifting motor 290 is mounted on the upper side of the auxiliary mounting plate 280. The output shaft of the shifting motor 290 is connected to an eccentric coupling 250. A drive shaft 240 is connected to the other side of the eccentric coupling 250. The drive shaft 240 is inserted into the slider 210. The shifting motor 290 is coaxially arranged with the main body 100 of the magnetic levitation direct drive motor. The drive shaft 240 is connected to the side wall of the slider 210. A ventilation opening 211 is provided in the middle of the bottom of the slider 210.
[0036] An anti-electromagnetic interference shaft cylinder 230 is installed at the front end of the fixed cylinder 200. The anti-electromagnetic interference shaft cylinder 230 is coaxially arranged with the fixed cylinder 200. The anti-electromagnetic interference shaft cylinder 230 is made of carbon fiber, which has a good anti-electromagnetic interference effect.
[0037] The inner wall of the fixed cylinder 200 is provided with a sliding groove 201. The slider 210 is slidably connected to the sliding groove 201. The slider 210 is set as a rectangular block. The two ends of the slider 210 are located in the sliding groove 201. The middle part of the slider 210 is in clearance fit with the fixed cylinder 200. The two ends of the slider 210 are rotatably mounted with pulleys 212. The pulleys 212 roll and fit against the sliding groove 201.
[0038] In this embodiment: by providing an air supply duct 220 at the top of the fixed cylinder 200, cooler air can be introduced to dissipate heat from the magnetic levitation direct drive motor body 100. Through the sliding engagement of the slider 210 and the fixed cylinder 200, when the shift motor 290 operates, its output shaft drives the eccentric coupling 250 to rotate, thereby causing the transmission shaft 240 to rotate around the output shaft of the shift motor 290. Since the shift motor 290 and the magnetic levitation direct drive motor body 100 are coaxially arranged, the transmission shaft 240 rotates around the magnetic levitation direct drive motor body 100. The slider 210 rotates along the fixed cylinder 200. In this way, the position of the magnetic levitation direct drive motor rotor 110 of the magnetic levitation direct drive motor body 100 remains unchanged, but it rotates on its own. When the magnetic levitation direct drive motor body 100 rotates, the surface position of the magnetic levitation direct drive motor body 100 corresponding to the outlet of the air source duct 220 will change. Therefore, the fresh air from the air source duct 220 can contact the surface of the magnetic levitation direct drive motor body 100 more evenly, which further improves the heat dissipation effect of the magnetic levitation direct drive motor body 100 and the reliability of the magnetic levitation direct drive motor structure assembly.
[0039] Example 2
[0040] This embodiment aims to address the problem of heat dissipation within the main body 100 of the magnetic levitation direct drive motor. This embodiment is an improvement upon Embodiment 1. For details, please refer to [link / reference]. Figure 4 and Figure 7 A cooling fan 170 is installed at the tail end of the magnetic levitation direct drive motor body 100. Specifically, the cooling fan 170 is installed at the tail end of the magnetic levitation direct drive motor rotor 110, and the air outlet direction of the cooling fan 170 is the tail end of the magnetic levitation direct drive motor body 100. When the magnetic levitation direct drive motor body 100 is running, the magnetic levitation direct drive motor rotor 110 rotates, which causes the magnetic levitation direct drive motor rotor 110 to drive the cooling fan 170 to rotate, thereby blowing the heat inside the magnetic levitation direct drive motor body 100 toward the tail end.
[0041] The outer side of the magnetic levitation direct drive motor body 100 is provided with several heat dissipation fins 190, which are arranged in a circumferential array. The heat dissipation fins 190 are made of aluminum sheets, which have good heat dissipation performance. By setting the heat dissipation fins 190, the heat dissipation area on the surface of the magnetic levitation direct drive motor body 100 can be greatly increased, and the effect of air cooling can be improved.
[0042] In this embodiment: by setting the heat dissipation fins 190, the heat dissipation area on the surface of the magnetic levitation direct drive motor body 100 can be greatly increased, thereby improving the effect of air cooling. By installing heat dissipation fan blades 170 inside the magnetic levitation direct drive motor body 100, when the magnetic levitation direct drive motor body 100 is running, the magnetic levitation direct drive motor rotor 110 rotates, causing the magnetic levitation direct drive motor rotor 110 to drive the heat dissipation fan blades 170 to rotate, thereby blowing the heat inside the magnetic levitation direct drive motor body 100 to the tail end, reducing the heat generation inside the magnetic levitation direct drive motor body 100 and improving the heat dissipation effect of the magnetic levitation direct drive motor body 100.
[0043] Example 3
[0044] This embodiment aims to address the problem that the hot air blown from the magnetic levitation direct drive motor body 100, located in front of the transposition motor 290, directly contacts the transposition motor 290. This embodiment is an improvement upon Embodiment 2. For details, please refer to [link to Embodiment 2]. Figure 3 and Figure 5 A wind deflector 260 is installed on the outer side of the middle part of the output shaft of the transposition motor 290. The wind deflector 260 is set as a frustum-shaped curved panel. Several horizontal connecting rods 270 are installed on the back side of the wind deflector 260. The other end of the several horizontal connecting rods 270 is connected to the side wall of the transposition motor 290. The air blown out by the heat dissipation of the magnetic levitation direct drive motor body 100 in front of the transposition motor 290 is blown away along the curve of the wind deflector 260, and will not blow directly onto the transposition motor 290.
[0045] Several balls 261 are rolled on the side of the windproof plate 260. The balls 261 roll and fit against the output shaft of the shift motor 290, converting the sliding friction between the windproof plate 260 and the output shaft of the shift motor 290 into rolling friction.
[0046] In this embodiment: by installing a wind deflector 260 in the middle of the output shaft of the transposition motor 290, and setting the wind deflector 260 as a curved frustum-shaped device, the air blown out by the heat dissipation of the magnetic levitation direct drive motor body 100 in front of the transposition motor 290 is blown away along the curve of the wind deflector 260, instead of blowing directly onto the transposition motor 290. This reduces the heat contacted by the transposition motor 290, improves the operating environment of the transposition motor 290, and enhances the stability and reliability of the entire magnetic levitation direct drive motor structure assembly.
[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0048] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.
Claims
1. A variable-position magnetic levitation direct-drive motor structure assembly, comprising a magnetic levitation direct-drive motor body (100), wherein the magnetic levitation direct-drive motor body (100) is internally provided with a magnetic levitation direct-drive motor stator (120), a magnetic levitation direct-drive motor rotor (110), a sensor (160), a thrust magnetic levitation bearing (130), a first radial magnetic levitation bearing (140), and a second radial magnetic levitation bearing (150), wherein the magnetic levitation direct-drive motor stator (120) is fixedly installed on the inner wall of the magnetic levitation direct-drive motor body, and the magnetic levitation direct-drive motor rotor (110) is internally provided with ... thrust magnetic levitation bearing (120) is fixedly installed on the inner wall of the magnetic levitation direct-drive motor body, and the magnetic levitation direct-drive motor rotor (110) is fixedly installed on the inner wall of the magnetic levitation direct-drive motor body. The magnetic levitation direct drive motor body (100) is rotatably pierced through the magnetic levitation direct drive motor rotor (110), and the magnetic levitation direct drive motor rotor (110) is coaxially arranged with the magnetic levitation direct drive motor body (100). The first radial magnetic levitation bearing (140) and the thrust magnetic levitation bearing (130) are both installed at the tail end of the magnetic levitation direct drive motor rotor (110), and the second radial magnetic levitation bearing (150) is installed at the other end of the magnetic levitation direct drive motor rotor (110). A mounting plate (180) is connected to the outside of the magnetic levitation direct drive motor body (100). The characteristic feature is that: A slider (210) is installed on the side of the mounting plate (180), and a fixed cylinder (200) is provided on the outside of the magnetic levitation direct drive motor body (100). The slider (210) is slidably installed on the inner wall of the fixed cylinder (200), and an air source pipe (220) is connected above the fixed cylinder (200).
2. The variable position magnetic levitation direct drive motor structure assembly according to claim 1, characterized in that: The back side of the fixed cylinder (200) is an open end, and a heat dissipation fan blade (170) is installed at the tail end of the magnetic levitation direct drive motor body (100). The air outlet direction of the heat dissipation fan blade (170) is the tail end of the magnetic levitation direct drive motor body (100).
3. The variable position magnetic levitation direct drive motor structure assembly according to claim 1, characterized in that: The outer side of the magnetic levitation direct drive motor body (100) is provided with a number of heat dissipation fins (190), which are arranged in a circumferential array and are made of aluminum sheets.
4. The variable position magnetic levitation direct drive motor structure assembly according to claim 1, characterized in that: An auxiliary mounting plate (280) is provided on the back side of the fixed cylinder (200). A shift motor (290) is mounted on the upper side of the auxiliary mounting plate (280). The output shaft of the shift motor (290) is connected to an eccentric coupling (250). A transmission shaft (240) is connected to the other side of the eccentric coupling (250). The transmission shaft (240) is inserted into the slider (210).
5. The variable position magnetic levitation direct drive motor structure assembly according to claim 4, characterized in that: The transposition motor (290) is coaxially arranged with the magnetic levitation direct drive motor body (100), the transmission shaft (240) is connected to the side wall of the slider (210), and a ventilation hole (211) is provided in the middle of the bottom of the slider (210).
6. The variable position magnetic levitation direct drive motor structure assembly according to claim 4, characterized in that: A windproof plate (260) is installed on the outer side of the middle part of the output shaft of the transposition motor (290). The windproof plate (260) is configured as a frustum-shaped curved plate. Several horizontal connecting rods (270) are installed on the back side of the windproof plate (260). The other end of the several horizontal connecting rods (270) is connected to the side wall of the transposition motor (290).
7. The variable position magnetic levitation direct drive motor structure assembly according to claim 6, characterized in that: The windproof plate (260) has several rolling balls (261) rolled on its side, and the rolling balls (261) are rolled in contact with the output shaft of the shift motor (290).
8. The variable position magnetic levitation direct drive motor structure assembly according to claim 1, characterized in that: The front end of the fixed cylinder (200) is equipped with an anti-electromagnetic interference shaft cylinder (230), which is coaxially arranged with the fixed cylinder (200). The anti-electromagnetic interference shaft cylinder (230) is a carbon fiber cylinder.
9. The variable position magnetic levitation direct drive motor structure assembly according to claim 1, characterized in that: The inner wall of the fixed cylinder (200) is provided with a sliding groove (201), and the slider (210) is slidably connected to the sliding groove (201).
10. A variable position magnetic levitation direct drive motor structure assembly according to claim 9, characterized in that: The slider (210) is set as a rectangular block. The two ends of the slider (210) are located in the groove (201). The middle part of the slider (210) is in clearance fit with the fixed cylinder (200). The two ends of the slider (210) are rotatably mounted with pulleys (212), and the pulleys (212) roll and fit against the groove (201).