Disc type motor centrally-driven magnetic suspension rotor system with adjustable blade inclination angle

Abstract

The utility model discloses a disc type motor centrally-driven magnetic suspension rotor system with an adjustable blade inclination angle, relates to the technical field of magnetic suspension rotors, and solves the problem that a magnetic suspension rotor structure which is more compact in structure, lighter in weight and capable of adjusting the blade inclination angle according to actual conditions is lacked in the prior art. The rotor comprises a stator, a rotor ring and a plurality of blades, the stator comprises a central shaft and limiting plates arranged at the upper end and the lower end of the central shaft in a mirroring mode, and the blades are arranged on the outer wall of the rotor ring at intervals; the upper limiting plate, the lower limiting plate and the rotor rings are provided with axial supporting modules and rotary driving modules which are matched with each other, the axial supporting modules are used for generating air gaps between the limiting plates and the rotor rings on the opposite sides, and the rotary driving modules are used for driving the rotor rings and the paddles to rotate so as to provide lift force; the utility model aims to enable the structure of the magnetic suspension rotor to be more compact and reduce the overall mass. And the inclination angles of the paddles can be adjusted according to actual requirements so as to better fly.

Description

Technical Field

[0001] The utility model belongs to the technical field of magnetic suspension rotors, and in particular relates to a disk-type motor centrally-driven magnetic suspension rotor system with adjustable blade inclination angles. Background Art

[0002] At present, various applications of maglev technology are booming both at home and abroad, and the more mature applications are mainly concentrated in maglev trains. In recent years, with the continuous development of maglev technology, the application of maglev technology to rotorcraft has become a new design idea for rotorcraft.

[0003] The rotor device of a traditional rotorcraft consists of rotor blades, a hub, and a rotor shaft. The rotor blades are installed on the hub, and the hub is connected to the transmission system through the central rotor shaft. The driving force of the power system is transmitted to the rotor shaft through the transmission device after multi-stage gear transmission reduction, thereby driving the hub and rotor blades to rotate; the power of the conventional rotor device is mechanically converted and transmitted through the engine and transmission device, which has the problems of power loss and complex system; on the other hand, the traditional rotorcraft adopts a central shaft support, and the traditional mechanical bearing has friction and wear, which is difficult to meet the requirements of high-speed rotation of the rotor; the existing magnetic levitation rotor principle is mainly The magnetic levitation rotor ring composed of propeller blades and outer ring rotors is installed in the groove of the fuselage duct. Through the magnetic levitation support, the lift generated by the rotation of the rotor is transmitted to the outer ring through magnetic force, and then to the fuselage. The magnetic levitation technology is applied to the support of rotorcraft. The magnetic levitation support is mainly used in the high-speed field. This method solves the problem that conventional mechanical bearings cannot meet the performance requirements due to the high speed of the support, and the upper limit of the rotor ring speed is improved. In addition, due to the contactless and frictionless characteristics of the magnetic levitation support, the friction of the system is reduced, and the vibration of the system is theoretically eliminated, and the working efficiency of the rotorcraft is improved.

[0004] In addition, the startup, flight and descent of the rotorcraft will be affected by the blade inclination angle. At present, the blades of most magnetic levitation rotor structures are fixed and the blade angle of attack cannot be adjusted according to actual needs, which will lead to energy loss or failure to provide better lift. Utility Model Content

[0005] In order to solve the above technical problems, the present invention provides a disk motor mid-drive magnetic levitation rotor system with adjustable blade inclination angle. The overall structure of the device adopts a method of wrapping the rotor with a mid-stator, which makes the magnetic levitation rotor structure more compact, reduces the overall mass, and one end of the blade is detachably connected to the rotor ring, which is convenient for adjusting the inclination angle; the rotary drive module is driven by a circular permanent magnet brushless DC motor, which can make full use of the radial space of the stator compared with the traditional rotary motor, effectively reduce the weight of the magnetic levitation rotor aircraft, and can provide greater lift and stability. The disk motor drive coil is energized to drive the magnet ring to rotate, driving the rotor ring to rotate, providing power for the blade rotation.

[0006] The technical solution adopted by the present invention is as follows:

[0007] A disk motor mid-drive magnetic levitation rotor system with adjustable blade inclination angle comprises a stator, a rotor ring and a plurality of blades, wherein the stator comprises a central axis and an upper limit plate and a lower limit plate mirror-set at the upper and lower ends of the central axis, the rotor ring is distributed between the upper and lower limit plates and is coaxially arranged with the central axis, and a plurality of blades are arranged at intervals on the outer wall of the rotor ring; the upper and lower limit plates and the rotor ring are provided with mutually cooperating axial support modules and rotation drive modules, the axial support module is used to generate an air gap between the limit plate and the rotor ring on the opposite side, the rotation drive module is used to drive the rotor ring to rotate, each blade is connected to the rotor ring via a boss, each blade is detachably connected to each boss via a fixing member, and a plurality of bosses can adjust the relative angle between the blade and the rotor ring via the fixing member.

[0008] Furthermore, a plurality of screw holes are correspondingly provided on the boss and the blade, the screw holes are arranged circumferentially, and the boss and the blade are detachably connected by bolts.

[0009] Through the multiple screw holes arranged in an annular direction, the connection structure of the screw holes and the bolts can realize the connection of the blades on the boss at different angles, thereby realizing the adjustment of the inclination angle of the blades. Since the blades are connected at one end and the other end is freely extended, it is only necessary to adjust one end to achieve the adjustment of the inclination angle of the blades, which is more convenient to adjust than the annular rotor structure (i.e. the rotor with the blades located in the annular structure).

[0010] Furthermore, one end of the boss is an arc surface matching the rotor ring, and the other end of the boss is a plane, and the blade is detachably connected to the plane end of the boss. The contact area between the arc surface boss and the rotor ring is larger, and the connection is tighter and more stable.

[0011] Furthermore, a connecting plate is provided at one end of the blade, and the connecting plate is detachably connected to the plane of the boss.

[0012] The connecting plate is provided with a plurality of threaded holes, which are convenient for disassembly and connection with the boss and adjustment of the inclination angle.

[0013] Furthermore, the boss is detachably connected to the rotor ring, which is convenient for replacement when a problem occurs without affecting the rotor ring.

[0014] Furthermore, an axial air gap is controlled to be generated between the stator and the rotor ring, and the range of the axial air gap is 10±(10-2) mm.

[0015] Furthermore, the stator and rotor rings are both made of non-ferromagnetic materials with good thermal conductivity, preferably carbon fiber.

[0016] Preferably, the axial support module comprises an upper magnetic fitting part and a second magnetic part which cooperate with each other, the upper magnetic fitting part is embedded in the upper surface of the rotor ring, and the second magnetic part is embedded in the lower surface of the upper limit plate.

[0017] Preferably, the second magnetic member is an electromagnet, and the upper magnetic matching member is an iron ring;

[0018] Preferably, the second magnetic member is a permanent magnetic array, and the upper magnetic matching member is an induction rail;

[0019] Furthermore, the upper magnetic fitting part is flush with the surface of the rotor ring, and the second magnetic part is flush with the lower surface of the upper limit plate.

[0020] Preferably, the axial support module further includes a lower end magnetic fitting part and a third magnetic part that cooperate with each other, the lower end magnetic fitting part is embedded in the lower surface of the rotor ring, and the third magnetic part is embedded in the upper surface of the lower limit plate at the lower end.

[0021] Preferably, the third magnetic member is an electromagnet, and the lower end magnetic matching member is an iron ring;

[0022] Preferably, the third magnetic component is a permanent magnet array, and the lower end magnetic matching component is an induction rail.

[0023] Furthermore, the lower end magnetic matching piece is flush with the lower surface of the rotor ring, and the third magnetic piece is flush with the upper surface of the limiting plate.

[0024] Preferably, the axial support modules are multiple and are evenly distributed around the axis of the stator.

[0025] Furthermore, the number of the second magnetic members and the third magnetic members is n pairs, wherein n≤4, and each pair of the second magnetic members and the third magnetic members are spaced apart around the axis of the stator, and the spacing angle is 360° / n;

[0026] Furthermore, the number of the second magnetic members and the third magnetic members is preferably three pairs.

[0027] Furthermore, the volume of the second magnetic component is smaller than the volume of the third magnetic component.

[0028] Preferably, at least three first magnetic components are embedded on the central axis, and radial magnetic matching components matching with the first magnetic components are arranged on the ring wall of the rotor ring close to the central axis.

[0029] Preferably, the first magnetic member is an electromagnet, and the radial magnetic matching member is an iron ring;

[0030] Preferably, the first magnetic member adopts a permanent magnetic array, and the radial magnetic matching member adopts an induction rail;

[0031] Furthermore, a radial air gap is controlled to be generated between the stator and the rotor ring, and the range of the radial air gap is 5±(5-2) mm; the advantage of the radial air gap being smaller than the axial air gap is that the radial suspension control is relatively simple, and reducing the radial air gap can make the overall structure more compact, thereby effectively reducing the overall weight of the rotor system.

[0032] Furthermore, the number of the first magnetic members is n pairs, wherein n≤4, and the first magnetic members are spaced apart around the axis of the stator, and the spacing angle is 360° / n;

[0033] Preferably, the number of the first magnetic members is 4 pairs.

[0034] Preferably, the rotation drive module includes a disk motor drive coil and a magnet ring matching therewith, the disk motor drive coil is embedded in the upper surface of the rotor ring, the magnet ring is embedded in the lower surface of the upper limit plate, and the disk motor drive coil and the magnet ring are both coaxially arranged with the rotor ring.

[0035] Furthermore, the magnet ring adopts a permanent magnet.

[0036] Preferably, a plurality of rolling components are respectively provided on opposite sides of the upper and lower limit plates.

[0037] Furthermore, the plurality of rolling components adopt one or more of rollers or balls.

[0038] Furthermore, several of the rolling components use balls, which are embedded in the grooves and can roll freely, and the exposed amount of the balls is 2±0.2mm.

[0039] Preferably, a plurality of rolling assemblies are spaced apart on the side wall of the central axis.

[0040] Furthermore, the plurality of rolling components adopt one or more of rollers or balls.

[0041] Furthermore, several of the rolling components use balls, which are embedded in the grooves and can roll freely, and the exposed amount of the balls is 2±0.2mm.

[0042] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0043] 1. The blades and the rotor are detachably connected, so that the axial drag torque of the blades can be adjusted by adjusting the angle of attack of the blades and the rotor, thereby adjusting the lift of the rotorcraft during its ascent; when the inclination angle of the blades is large, more lift can be provided, and when the inclination angle of the blades is small, the circumferential torque becomes smaller and the lift is smaller, thereby saving more electric energy.

[0044] 2. The overall structure of the device adopts a central stator to wrap the rotor and the blades are distributed on the outside, which makes the magnetic levitation rotor structure more compact and reduces the overall mass. The air gap connected to the outside and the outer blades drive the air flow to better achieve heat dissipation.

[0045] 3. At the same time, the use of better heat dissipation materials for the magnetic levitation stator and rotor ring can significantly improve the heat dissipation performance of the rotor, and the rated speed of the rotor ring can be higher, thereby providing greater lift and flight speed; and improving the heat dissipation performance can increase the life of the magnet and reduce the occurrence of demagnetization.

[0046] 4. When stationary, the rolling assembly on the lower limit plate can support the rotor ring, and the rolling assembly on the central axis can prevent the rotor ring from colliding and getting stuck with the inner side of the stator, giving the suspension controller buffer time.

[0047] 5. The second magnetic member generates an attractive force to attract the rotor ring to rise and separate from the rolling assembly on the lower limit plate, so that an axial gap is generated between the surface of the stator and the surface of the rotor ring, thereby achieving frictionless starting of the rotor.

[0048] 6. The rotary drive module is driven by a circular permanent magnet brushless DC motor. Compared with the traditional rotary motor, it can make full use of the radial space of the stator, effectively reduce the weight of the magnetic levitation rotorcraft, and provide greater lift and stability. The disc motor drive coil is energized to drive the magnet ring to rotate, driving the rotor ring to rotate, providing power for the blades to rotate.

[0049] 7. The second magnetic component cooperates with the upper magnetic matching component to generate the main suspension attraction, and the third magnetic component cooperates with the lower magnetic matching component to generate an auxiliary suspension force. Therefore, the volume of the second magnetic component is smaller than that of the third magnetic component; as the rotation speed increases, the lift generated by the blade increases, and in this process, the attraction generated by the second magnetic component is controlled to gradually decrease; when the lift generated by the blade is equal to the gravity of the rotating component itself, the attraction generated by the third magnetic component is controlled to gradually increase; the volume of the second magnetic component is smaller than that of the third magnetic component. For the setting of the stator wrapped in the rotor, the third magnetic component located at the bottom can play a major role, and the second magnetic component serves as an auxiliary. This setting reduces the overall weight while ensuring magnetic suspension control. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The present invention will be described by way of examples with reference to the accompanying drawings, in which:

[0051] Figure 1 It is a structural schematic diagram of a disk-type motor mid-drive magnetic suspension rotor system with adjustable blade inclination in the utility model;

[0052] Figure 2 It is a schematic cross-sectional structure diagram of the stator and rotor ring in Example 1 of the utility model;

[0053] Figure 3 It is a schematic cross-sectional structure diagram of a disk-type motor mid-drive magnetic suspension rotor system with adjustable blade inclination in the utility model;

[0054] Figure 4 It is a cross-sectional structural schematic diagram of the stator in the utility model;

[0055] Figure 5 It is a top view structural schematic diagram of a disc motor mid-drive magnetic levitation rotor system with adjustable blade pitch in Example 5.

[0056] Reference numerals

[0057] 1-stator; 2-blade; 3-rotor ring; 4-radial rotor iron ring; 5-first magnetic part; 6-axial upper iron ring; 7-second magnetic part; 8-axial lower iron ring; 9-third magnetic part; 10-disc motor drive coil; 11-magnet ring; 12-rolling assembly; 13-bolt; 14-boss. DETAILED DESCRIPTION

[0058] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application usually described and indicated in the drawings here can be arranged and designed in various configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0059] In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or are the positions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0060] Combine the following Figures 1 to 5 The utility model is described in detail.

[0061] Example 1

[0062] A disc motor mid-drive magnetic levitation rotor system with adjustable blade pitch angle, see attached Figure 1 , comprising a stator 1, a rotor ring 3 and 6 blades 2, wherein the stator 1 comprises a central axis and an upper limit plate and a lower limit plate mirror-set at the upper and lower ends of the central axis, and the rotor ring 3 is distributed between the upper and lower limit plates and is coaxially arranged with the central axis, as shown in the attached Figure 3 , the six blades 2 are arranged at intervals on the outer wall of the rotor ring 3; the upper and lower limit plates and the rotor ring 3 are provided with axial support modules and rotation drive modules that cooperate with each other, the axial support module is used to create an air gap between the limit plate and the rotor ring 3 on the opposite side, and the rotation drive module is used to drive the rotor ring 3 and the blades 2 to rotate to provide lift.

[0063] Reference Figure 5Each of the blades 2 is connected to the rotor ring 3 via a boss 14, one end of the boss 14 is an arc surface matching the rotor ring 13, and the other end of the boss 14 is a plane. A connecting plate is provided at one end of the blade 2, and the connecting plate is detachably connected to the plane of the boss 14 via a screw hole bolt 13.

[0064] The flat surface of the boss 14 and the connecting plate are provided with 36 threaded holes in an annular direction, so as to facilitate the disassembly and connection with the boss 14 and adjust the inclination angle; the adjustable angle each time is 360° / 36=10°.

[0065] Through the multiple screw holes arranged in an annular direction, the connection structure of the screw holes and the bolts 13 can realize the connection of the blade 2 on the boss 14 at different angles, thereby realizing the adjustment of the inclination angle of the blade 2. Since the blade 2 is connected at one end and the other end is freely extended, it is only necessary to adjust one end to realize the adjustment of the inclination angle of the blade 2, which is more convenient to adjust than the annular rotor structure (i.e., the rotor with the blade located in the annular structure).

[0066] The axial support module controls the generation of an axial air gap between the stator 1 and the rotor ring 3 , and the range of the axial air gap is 10 mm.

[0067] In this embodiment, refer to the attached Figure 4 The axial support module includes an upper magnetic matching part 6 and a second magnetic part 7 that cooperate with each other. The upper magnetic matching part 6 is embedded in the upper surface of the rotor ring 3, and the second magnetic part 7 is embedded in the lower surface of the upper limit plate.

[0068] The second magnetic member 7 is an electromagnet, and the upper magnetic matching member 6 is an iron ring;

[0069] The upper magnetic matching member 6 is flush with the surface of the rotor ring 3 , and the second magnetic member 7 is flush with the lower surface of the limiting plate.

[0070] In this embodiment, refer to the attached Figure 2 The axial support module also includes a lower end magnetic matching part 8 and a third magnetic part 9 that cooperate with each other. The lower end magnetic matching part 8 is embedded in the lower surface of the rotor ring 3, and the third magnetic part 9 is embedded in the upper surface of the lower end limit plate.

[0071] The third magnetic member 9 is an electromagnet, and the lower end magnetic matching member 8 is an iron ring;

[0072] The lower end magnetic matching member 8 is flush with the lower surface of the rotor ring 3 , and the third magnetic member 9 is flush with the upper surface of the limiting plate.

[0073] In this embodiment, there are multiple axial support modules, which are evenly distributed around the axis of the stator 1 .

[0074] The number of the second magnetic members 7 and the third magnetic members 9 is 3 pairs, and each pair of the second magnetic members 7 and the third magnetic members 9 is spaced apart around the axis of the stator 1 , and the spacing angle is 120°.

[0075] There are three pairs of axial support modules, which are evenly distributed around the rotor's central axis of rotation to ensure balanced axial force on the rotor as a whole. During the flight of the rotorcraft, the three-pair setting is the most conducive configuration for reducing weight.

[0076] The volume of the second magnetic component 7 is smaller than the volume of the third magnetic component 9 .

[0077] In this embodiment, at least three first magnetic components 5 are embedded on the central axis, and radial magnetic matching components 4 matching with the first magnetic components 5 are provided on the ring wall of the rotor ring 3 close to the central axis.

[0078] The first magnetic component 5 is an electromagnet, and the radial magnetic matching component 4 is an iron ring.

[0079] A radial air gap is controlled to be generated between the stator 1 and the rotor ring 3, and the radial air gap range is 5 mm; the advantage of the radial air gap being smaller than the axial air gap is that the radial suspension control is relatively simple, and reducing the radial air gap can make the overall structure more compact, effectively reducing the overall weight of the rotor system.

[0080] The number of the first magnetic members 5 is 4 pairs, and the first magnetic members 5 are distributed at intervals around the axis of the stator 1 , with an interval angle of 90°.

[0081] The first magnetic parts of the present invention have a total of 4 pairs, which are evenly distributed around the central axis of rotation of the rotor, and cooperate to control the radial displacement limit of the rotor ring 3 to achieve autonomous control of the radial limit; using 4 pairs can minimize the total weight of the rotor while ensuring the most accurate control possible.

[0082] In this embodiment, the rotation drive module includes a disk motor drive coil 10 and a magnet ring 11 matched therewith. The disk motor drive coil 10 is embedded in the upper surface of the rotor ring 3, and the magnet ring 11 is embedded in the lower surface of the limit plate. The disk motor drive coil 10 and the magnet ring 11 are both coaxially arranged with the rotor ring 3.

[0083] The magnet ring 11 is made of permanent magnets.

[0084] In this embodiment, a plurality of rolling components 12 are respectively disposed on opposite sides of the upper and lower limit plates, and twelve rolling components 12 are disposed on each of the upper and lower limit plates.

[0085] The rolling assembly 12 uses a roller; the roller is respectively embedded in the upper and lower limit plates, the exposed amount of the roller is 2 mm, and the rotation direction of the roller is consistent with the rotation direction of the rotor ring 3.

[0086] In this embodiment, a plurality of rolling assemblies 12 are spaced apart on the side wall of the central axis. There are four rolling assemblies 12 on the central axis, and the spacing angle between each rolling assemblies is 90°.

[0087] The rolling assembly 12 uses rollers; the rollers are respectively embedded on the central axis, the exposed amount of the rollers is 2 mm, and the rotation direction of the rollers is consistent with the rotation direction of the rotor ring 3.

[0088] Example 2

[0089] Different from the first embodiment, the boss 14 is detachably connected to the rotor ring 3 by bolts. The detachable connection is convenient for replacement when a problem occurs without affecting the rotor ring.

[0090] Example 3

[0091] See attached Figure 3 The rolling assembly 12 in the second embodiment uses a ball, which is embedded in the groove and can roll freely, and the exposed amount of the ball is 2 mm.

[0092] Example 4

[0093] Different from the first embodiment, in this embodiment, the second magnetic member 7 adopts a permanent magnetic array, and the upper magnetic matching member 6 adopts an induction rail;

[0094] The third magnetic member 9 is a permanent magnetic array, and the lower end magnetic matching member 8 is an induction rail;

[0095] The first magnetic component 5 is a permanent magnetic array, and the radial magnetic matching component 4 is an induction rail.

[0096] Working principle and usage process:

[0097] The second magnetic member 7 generates an attractive force to pull the rotor ring 3 up and away from the support of the rolling assembly 12 on the lower end limit plate (when stationary, the rolling assembly 12 can support the rotor ring 3 and prevent the rotor ring 3 from colliding and getting stuck with the inner side of the stator 1 as much as possible, giving the suspension controller a time buffer.), so that a gap is generated between the surface of the stator 1 and the rotor ring 3, thereby achieving frictionless starting of the rotor.

[0098] The rotary drive module is driven by a permanent magnet brushless DC motor. Compared with the traditional rotary motor, it can make full use of the radial space of the stator 1, effectively reduce the weight of the magnetic levitation rotorcraft, and provide greater lift and stability; the disc motor drive coil 10 is energized to drive the rotor ring 3 and the magnet ring 11 to rotate, providing power for the rotation of the blade 2. As the speed increases, the lift generated by the blade 2 increases, and in this process, the attraction generated by the second magnetic part 7 is controlled to gradually decrease. When the lift generated by the blade 2 is equal to the gravity of the rotating component itself, the attraction generated by the third magnetic part 9 is controlled to gradually increase. When the lift is equal to the rotational deadweight, the rotor ring 3 and the blade 2 itself can overcome the deadweight and hover. As the lift continues to increase, the third magnetic part 9 needs to increase the suction force to control the axial air gap; the lift continues to increase. When the lift is greater than or equal to the deadweight of the rotor system, the rotor device can be lifted off, and the lift generated by the blade 2 is transmitted to the stator 1 through the attraction generated by the third magnetic part 9, so that the device is lifted off.

[0099] The first magnetic component 5 generates attraction when energized, adjusts the current according to the feedback information of the radial gap sensor 13, controls the attraction of the radial limit module, and radially maintains the air gap between the rotor ring 3 and the radial inner side of the stator 1 to prevent the rotor ring 3 from colliding with the stator 1, thereby achieving stable suspension between the rotor and the stator 1 during flight; in special circumstances, when the instantaneous lift is greater than the attraction generated by the electromagnet control, the rotor ring 3 will contact the rolling assembly 12, causing the rotor ring to rotate normally, thereby achieving the function of protecting the electromagnet and maintaining the normal operation of the structure.

[0100] The overall structure of the device adopts a method of wrapping the rotor with a central stator 1, which makes the magnetic levitation rotor structure compact, and the air gap connected to the outside and the outer blades drive the air flow to better achieve heat dissipation. At the same time, the magnetic levitation stator 1 and the rotor use better heat dissipation materials, which can also significantly improve the heat dissipation performance of the rotor. The rated speed of the rotor ring 3 can be higher, thereby providing greater lift and flight speed.

[0101] When the inclination angle of the blade 2 needs to be adjusted, the connecting bolts 13 are removed, the blade 2 is rotated to reach the required angle, and then the bolts 13 are used to fix it again.

[0102] It should be noted that:

[0103] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A disc motor mid-drive magnetic levitation rotor system with adjustable blade pitch, characterized in that: The invention comprises a stator (1), a rotor ring (3) and a plurality of blades (2), wherein the stator (1) comprises a central axis and an upper limit plate and a lower limit plate which are arranged in a mirror image at the upper and lower ends of the central axis, the rotor ring (3) is distributed between the upper and lower limit plates and is arranged coaxially with the central axis, and the plurality of blades (2) are arranged at intervals on the outer wall of the rotor ring (3); the upper and lower limit plates and the rotor ring (3) are provided with axial support modules and rotation drive modules which cooperate with each other, the axial support module is used to generate an air gap between the limit plate and the rotor ring (3) on the opposite side, and the rotation drive module is used to drive the rotor ring (3) to rotate; each blade (2) is connected to the rotor ring (3) through a boss (14), each blade (2) is detachably connected to the boss (14) through a fixing member, and the plurality of bosses (14) can adjust the relative angle between the blade (2) and the rotor ring (3) through the fixing member.

2. The disc motor mid-drive magnetic levitation rotor system with adjustable blade pitch according to claim 1, characterized in that: The boss (14) and the blade (2) are provided with a plurality of screw holes correspondingly, the screw holes are arranged in a circumferential direction, and the two are detachably connected by bolts (13).

3. A disc motor mid-drive magnetic levitation rotor system with adjustable blade pitch according to claim 1 or 2, characterized in that: One end of the boss (14) is an arc surface matching the rotor ring (3), and the other end of the boss (14) is a plane. The blade (2) is detachably connected to the plane end of the boss (14).

4. A disc motor mid-drive magnetic levitation rotor system with adjustable blade pitch according to claim 1 or 2, characterized in that: A connecting plate is provided at one end of the blade (2), and the connecting plate is detachably connected to the boss (14).

5. A disc motor mid-drive magnetic levitation rotor system with adjustable blade pitch according to claim 1 or 2, characterized in that: The boss (14) is detachably connected to the rotor ring (3).

6. A disc motor mid-drive magnetic levitation rotor system with adjustable blade pitch according to claim 1 or 2, characterized in that: The axial support module comprises an upper magnetic matching part (6) and a second magnetic part (7) that cooperate with each other, wherein the upper magnetic matching part (6) is embedded in the upper surface of the rotor ring (3), and the second magnetic part (7) is embedded in the lower surface of the upper limit plate; the axial support module also comprises a lower magnetic matching part (8) and a third magnetic part (9) that cooperate with each other, wherein the lower magnetic matching part (8) is embedded in the lower surface of the rotor ring (3), and the third magnetic part (9) is embedded in the upper surface of the lower limit plate.

7. A disc motor mid-drive magnetic levitation rotor system with adjustable blade pitch according to claim 1 or 2, characterized in that: The axial support modules are in multiple groups and are evenly distributed around the axis of the stator (1).

8. A disc motor mid-drive magnetic levitation rotor system with adjustable blade pitch according to claim 1 or 2, characterized in that: At least three first magnetic parts (5) are embedded on the central axis, and radial magnetic matching parts (4) matching with the first magnetic parts (5) are arranged on the ring wall of the rotor ring (3) on the side close to the central axis.

9. A disc motor mid-drive magnetic levitation rotor system with adjustable blade pitch according to claim 1 or 2, characterized in that: The rotation drive module comprises a disk-type motor drive coil (10) and a magnet ring (11) matched therewith, wherein the disk-type motor drive coil (10) is embedded in the upper surface of the rotor ring (3), and the magnet ring (11) is embedded in the lower surface of the upper limit plate, and the disk-type motor drive coil (10) and the magnet ring (11) are both coaxially arranged with the rotor ring (3).

10. A disc motor mid-drive magnetic levitation rotor system with adjustable blade pitch according to claim 1 or 2, characterized in that: A plurality of rolling assemblies (12) are respectively arranged on opposite sides of the upper limit plate and the lower limit plate, and a plurality of rolling assemblies (12) are arranged at intervals on the side wall of the central axis.

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