A permanent magnet coupler with variable magnet position and variable speed

Abstract

The present invention discloses a permanent magnet coupler with variable magnet position and speed, and relates to the technical field of permanent magnet eddy current transmission. The present invention includes a permanent magnet rotor assembly installed at the load end of the permanent magnet coupler; the permanent magnet rotor assembly is located between a first conductor disk and a second conductor disk; the permanent magnet rotor assembly includes a first rotor disk and a second rotor disk that are relatively coaxially matched; a coaxial gear ring and a plurality of gear assemblies meshing with the gear ring are installed in the first rotor disk and the second rotor disk. The present invention changes the radial position of the magnet, which is equivalent to changing the effective radius of the magnetic field, thereby changing the transmission torque and output speed. The adjustment is convenient and quick, and the application adaptability is strong, which is conducive to the promotion and application of variable speed permanent magnet couplers.

Description

Technical Field

[0001] The invention belongs to the technical field of permanent magnet eddy current transmission, and in particular relates to a permanent magnet coupler with variable magnet position and speed. Background Art

[0002] Permanent magnetic coupling is a new type of transmission device that uses magnetic field force to achieve contactless transmission of force or torque. The device has the advantages of stable performance, no high-order harmonic pollution, and no electromagnetic interference.

[0003] It can be installed between the motor and the load to achieve soft starting of the motor without overloading and burning the motor coil. In terms of materials, NdFeB permanent magnet materials with better performance are used as magnetic sources, which greatly improves the transmission power. However, the price of permanent magnet materials with high magnetic energy product is relatively high, resulting in relatively high cost of permanent magnet magnetic couplers, so it is necessary to design and optimize the variable speed disc magnetic coupler. Use less material to achieve a stronger magnetic field, transmit as much torque as possible, and achieve the best cost performance.

[0004] Working principle of variable speed disc permanent magnet coupler The structure of the master and slave magnetic rotors of the variable speed disc permanent magnet magnetic coupler. The active rotor is embedded with permanent magnets, and the permanent magnet material is neodymium iron boron permanent magnet material with high magnetic energy product. The permanent magnet is axially magnetized and the N and S poles are arranged alternately. Slots are made on the driven rotor, copper bars are embedded, and the edge contact part is wrapped with a thin ring copper sheet. The active rotor and the driven rotor of the coupler do not contact each other, and there is a certain air gap. When the motor drives the active rotor to rotate, the copper bar conductor cuts the magnetic lines of force, and a closed induced current is generated on the copper bar conductor. The induced magnetic field generated by the induced current is coupled with the permanent magnetic field to generate an interaction force and then generate torque. When the size of the air gap changes, the interaction force between the master and slave rotors changes accordingly, which results in a change in the slip and the transmitted torque. When the air gap becomes smaller, the air gap magnetic density increases, resulting in an increase in the force and a decrease in the slip; when the air gap increases, the air gap magnetic density decreases, resulting in a decrease in the force and an increase in the slip. The adjustment of the air gap in the prior art is achieved by screw transmission.

[0005] The existing patent CN104242598B-adjustable coupling flux permanent magnetic speed regulation, braking or load device, including an active disk as a permanent magnetic coupling disk, a passive disk / brake disk as a flux switch type permanent magnetic disk; or a flux switch type permanent magnetic disk is used as an active disk, and a permanent magnetic coupling disk is used as a passive disk / brake disk; the permanent magnetic coupling disk and the flux switch type permanent magnetic disk are in an air gap magnetic field coupling structure, and the two can interchange the installation order, or mutually become the main and passive disks, or interchange the inner and outer nested positions. The present invention is applicable to the technical fields of coupling transmission and load speed regulation, automatic transmission, braking and braking, rotating load, cutting off / combining power, motor energy saving, household appliances, sealed pumps, petrochemical industry, wind power generation, etc., and is used as a technical solution for designing and manufacturing permanent magnetic speed regulators, speed couplings and automatic transmissions, brake devices, load / loading devices, centrifugal load speed regulators or clutches or new energy-saving household appliances. The above-mentioned scheme is too bloated and relatively complex in structure, which indirectly increases the cost.

[0006] The existing variable speed permanent magnet coupler needs to manually disassemble and assemble bolts and gaskets to change the air gap, thereby changing the transmission torque and output speed. The adjustment workload is large and time-consuming. These problems have led to low user acceptance and are not conducive to the promotion and application of the product. Summary of the invention

[0007] The purpose of the present invention is to provide a permanent magnet coupler with variable magnet position and speed change. The permanent magnet coupler does not need to change the air gap, but changes the radial position of the magnet, which is equivalent to changing the effective radius of the magnetic field, thereby changing the transmitted torque and output speed.

[0008] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0009] The present invention is a permanent magnet coupler with variable magnet position and speed, comprising a conductor rotor assembly installed at the driving end of the permanent magnet coupler; the conductor rotor assembly comprises a first conductor disk and a second conductor disk, and the outer edge of the first conductor disk is connected to the outer edge of the second conductor disk through a connecting piece;

[0010] A permanent magnet rotor assembly installed at the load end of the permanent magnet coupler; the permanent magnet rotor assembly is located between the first conductor disk and the second conductor disk; the permanent magnet rotor assembly includes a first rotor disk and a second rotor disk that are relatively coaxially matched; a coaxial gear ring and a plurality of gear assemblies meshing with the gear ring are installed in the first rotor disk and the second rotor disk;

[0011] Wherein, a magnet is fixed inside the gear assembly, and the magnetic poles of the magnets of two adjacent gear assemblies are opposite;

[0012] Wherein, the gear ring comprises a toothed disc, and one or more shifting holes are opened on the end surface of the toothed disc;

[0013] Wherein, an arc-shaped slot hole which interpenetrates with the shifting hole is formed on the end surface of the second rotor disk.

[0014] Furthermore, the connecting member includes a spacer and a bolt assembly, wherein the spacer is located between the first conductor disk and the second conductor disk and is fixed by the bolt assembly.

[0015] Furthermore, heat sinks are fixed to the outer surface of the first conductor disk and the outer surface of the second conductor disk, respectively; and copper conductor disks are fixed to the inner surface of the first conductor disk and the inner surface of the second conductor disk, respectively.

[0016] Furthermore, a fixing piece for the driving end is fixed at the center of the first conductor disk.

[0017] Furthermore, a first annular groove is formed on the surface of the first rotor disk opposite to the second rotor disk, and a plurality of first through holes are evenly distributed along the surface of the first annular groove; a second annular groove corresponding to the first annular groove is formed on the second rotor disk, and a plurality of second through holes corresponding to the first through holes are evenly distributed along the surface of the second annular groove.

[0018] Furthermore, a first axial hole is formed at the center of the first rotor disk; a second axial hole corresponding to the first axial hole is formed at the center of the second rotor disk; and a fixing member for the load end is fixed to the second axial hole.

[0019] Furthermore, the end face of the magnet and the end face of the gear assembly are parallel to each other; the peripheral side surface of the gear assembly is provided with teeth; and the teeth of the gear assembly are meshed with the gear ring.

[0020] Further, the gear assembly is rotationally matched between the second through hole of the second rotor disk and the first through hole of the first rotor disk; the gear ring is rotationally matched between the first annular groove of the first rotor disk and the second annular groove of the second rotor disk.

[0021] Furthermore, the gear assembly includes a first center line and a radius R, and the magnet includes a second center line; a distance between the second center line and the first center line is smaller than the radius R.

[0022] Furthermore, the length of the arc-shaped slot is greater than or equal to the circumference of the gear assembly.

[0023] The present invention has the following beneficial effects:

[0024] 1. The permanent magnet coupler of the present invention does not need to change the air gap, but changes the radial position of the magnet, which is equivalent to changing the radius of action of the magnetic field, thereby changing the transmission torque and output speed. The adjustment is convenient and fast, and the application adaptability is strong, which is conducive to the promotion and application of variable speed permanent magnet couplers.

[0025] 2. The permanent magnet coupler of the present invention adjusts the radial position of the magnet by installing a coaxial gear ring and a plurality of gear assemblies meshing with the gear ring in the relatively coaxially matched first rotor disk and second rotor disk of the permanent magnet rotor assembly, thereby changing the effective radius of the magnetic field and achieving the purpose of adjusting the transmitted torque and output speed. The permanent magnet coupler has a simple structure and strong practicality.

[0026] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 It is a structural schematic diagram of a permanent magnetic coupler with variable magnet position and speed;

[0029] Figure 2 is a schematic diagram of the structure of the conductor rotor assembly;

[0030] Figure 3 is a structural schematic diagram of a permanent magnet rotor assembly;

[0031] Figure 4 is a schematic structural diagram of a first rotor disk;

[0032] Figure 5 is a schematic structural diagram of a second rotor disk;

[0033] Figure 6 is a schematic diagram of the structure of the gear ring;

[0034] Figure 7 is a schematic diagram of the structure of the gear assembly;

[0035] Figure 8 A schematic diagram of the arrangement of the gear assembly and the magnet positions;

[0036] Fig. 9 It is a side view of the permanent magnet rotor assembly structure in the first embodiment;

[0037] Fig.10 It is a side view of the permanent magnet rotor assembly structure in the second embodiment;

[0038] Fig.11 It is a side view of the permanent magnet rotor assembly structure in the third embodiment;

[0039] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0040] 1-first conductor disk, 2-first rotor disk, 3-fixing part, 4-second rotor disk, 5-spacer, 6-heat sink, 7-second conductor disk, 8-copper conductor disk, 9-gear assembly, 10-magnet, 11-gear ring, 201-first shaft hole, 202-first annular groove, 203-first through hole, 401-second shaft hole, 402-second annular groove, 403-second through hole, 901-tooth, 902-first center line, 1001-second center line, 1101-dial hole. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] In the description of the present invention, it should be understood that terms such as "opening", "upper", "lower", "center", "installed in", "middle", "length", "inside", "outer edge" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0043] Embodiment 1

[0044] See also Figure 1 As shown, the present invention is a permanent magnet coupler with variable magnet position and speed, including a conductor rotor assembly installed at the driving end of the permanent magnet coupler; and a permanent magnet rotor assembly installed at the load end of the permanent magnet coupler.

[0045] See also Figure 2 As shown, the conductor rotor assembly includes a first conductor disk 1 and a second conductor disk 7, and the outer edge of the first conductor disk 1 is connected to the outer edge of the second conductor disk 7 by a connecting member; the connecting member includes a spacer 5 and a bolt assembly, and the spacer 5 is located between the first conductor disk 1 and the second conductor disk 7, and is fixed by the bolt assembly, so that there is a certain distance between the first conductor disk 1 and the second conductor disk 7, which is used for clearance matching with the permanent magnet rotor assembly.

[0046] A fixing piece 3 for the driving end is fixed at the center of the first conductor disk 1; heat sinks 6 are fixed to the outer surface of the first conductor disk 1 and the outer surface of the second conductor disk 7 respectively; copper conductor disks 8 are fixed to the inner surface of the first conductor disk 1 and the inner surface of the second conductor disk 7 respectively.

[0047] See also Figure 3-5As shown, the permanent magnet rotor assembly is located between the first conductor disk 1 and the second conductor disk 7; the permanent magnet rotor assembly includes a first rotor disk 2 and a second rotor disk 4 that are relatively coaxially matched; a coaxial gear ring 11 and a plurality of gear assemblies 9 that mesh with the gear ring 11 are installed in the first rotor disk 2 and the second rotor disk 4; a first annular groove 202 is formed on the surface of the first rotor disk 2 opposite to the second rotor disk 4, and a plurality of first through holes 203 are uniformly distributed along the surface of the first annular groove 202; the second rotor disk 4 is formed with a second annular groove 402 corresponding to the first annular groove 202, and a plurality of second through holes 403 corresponding to the first through holes 203 are uniformly distributed along the surface of the second annular groove 402.

[0048] A first axial hole 201 is formed at the center of the first rotor disk 2 ; a second axial hole 401 corresponding to the first axial hole 201 is formed at the center of the second rotor disk 4 ; a fixing member 3 for the load end is fixed to the second axial hole 401 .

[0049] See also Figure 7-9 As shown, a magnet 10 is fixed inside the gear assembly 9, and the magnetic poles of the magnets 10 of two adjacent gear assemblies 9 are opposite; the end face of the magnet 10 is parallel to the end face of the gear assembly 9; teeth 901 are provided on the circumferential side of the gear assembly 9; the teeth 901 of the gear assembly 9 are meshed with the gear ring 11; the gear assembly 9 is rotatably engaged between the second through hole 403 of the second rotor disk 4 and the first through hole 203 of the first rotor disk 2; the gear ring 11 is sleeved and rotatably engaged between the first annular groove 202 of the first rotor disk 2 and the second annular groove 402 of the second rotor disk 4.

[0050] The gear assembly 9 includes a first center line 902 and a radius R, and the magnet 10 includes a second center line 1001; the distance between the second center line 1001 and the first center line 902 is smaller than the radius R. An arc-shaped slot hole 404 interpenetrating with the shifting hole 1101 is formed on the end surface of the second rotor disk 4, and the length of the arc-shaped slot hole 404 is greater than or equal to the circumference of the gear assembly 9.

[0051] See also Fig. 9 As shown, when the toggle hole 1101 is located at one end of the arc slot 404 , the magnet 10 is located away from the center of the second rotor disk 4 , and the second center line 1001 of the magnet 10 is perpendicular to the diameter of the second rotor disk 4 .

[0052] See also Figure 6 As shown, the gear ring 11 includes a toothed disc 1102 , and a shifting hole 1101 is formed on the end surface of the toothed disc 1102 .

[0053] Embodiment 2

[0054] See also Figure 1As shown, the present invention is a permanent magnet coupler with variable magnet position and speed, including a conductor rotor assembly installed at the driving end of the permanent magnet coupler; and a permanent magnet rotor assembly installed at the load end of the permanent magnet coupler.

[0055] See also Figure 2 As shown, the conductor rotor assembly includes a first conductor disk 1 and a second conductor disk 7, and the outer edge of the first conductor disk 1 is connected to the outer edge of the second conductor disk 7 by a connecting member; the connecting member includes a spacer 5 and a bolt assembly, and the spacer 5 is located between the first conductor disk 1 and the second conductor disk 7, and is fixed by the bolt assembly, so that there is a certain distance between the first conductor disk 1 and the second conductor disk 7, which is used for clearance matching with the permanent magnet rotor assembly.

[0056] A fixing piece 3 for the driving end is fixed at the center of the first conductor disk 1; heat sinks 6 are fixed to the outer surface of the first conductor disk 1 and the outer surface of the second conductor disk 7 respectively; copper conductor disks 8 are fixed to the inner surface of the first conductor disk 1 and the inner surface of the second conductor disk 7 respectively.

[0057] See also Figure 3-5 As shown, the permanent magnet rotor assembly is located between the first conductor disk 1 and the second conductor disk 7; the permanent magnet rotor assembly includes a first rotor disk 2 and a second rotor disk 4 that are relatively coaxially matched; a coaxial gear ring 11 and a plurality of gear assemblies 9 that mesh with the gear ring 11 are installed in the first rotor disk 2 and the second rotor disk 4; a first annular groove 202 is formed on the surface of the first rotor disk 2 opposite to the second rotor disk 4, and a plurality of first through holes 203 are uniformly distributed along the surface of the first annular groove 202; the second rotor disk 4 is formed with a second annular groove 402 corresponding to the first annular groove 202, and a plurality of second through holes 403 corresponding to the first through holes 203 are uniformly distributed along the surface of the second annular groove 402.

[0058] A first shaft hole 201 is formed at the center of the first rotor disk 2; a second shaft hole 401 corresponding to the first shaft hole 201 is formed at the center of the second rotor disk 4; a fixing member 3 for the load end is fixed to the second shaft hole 401. An arc-shaped slot hole 404 is formed on the end surface of the second rotor disk 4 and is interlinked with the shifting hole 1101. The length of the arc-shaped slot hole 404 is greater than or equal to the circumference of the gear assembly 9.

[0059] See also Figure 7-8 As shown, a magnet 10 is fixed inside the gear assembly 9, and the magnetic poles of the magnets 10 of two adjacent gear assemblies 9 are opposite; the end face of the magnet 10 is parallel to the end face of the gear assembly 9; teeth 901 are provided on the circumferential side of the gear assembly 9; the teeth 901 of the gear assembly 9 are meshed with the gear ring 11; the gear assembly 9 is rotatably engaged between the second through hole 403 of the second rotor disk 4 and the first through hole 203 of the first rotor disk 2; the gear ring 11 is sleeved and rotatably engaged between the first annular groove 202 of the first rotor disk 2 and the second annular groove 402 of the second rotor disk 4.

[0060] The gear assembly 9 includes a first center line 902 and a radius R, and the magnet 10 includes a second center line 1001 ; the distance between the second center line 1001 and the first center line 902 is smaller than the radius R.

[0061] See also Fig.10 As shown, when the toggle hole 1101 is located in the middle of the arc slot 404, the magnet 10 is located parallel to the diameter direction of the second rotor disk 4, and the second center line 1001 of the magnet 10 is parallel to or in the same direction as the diameter of the second rotor disk 4.

[0062] See also Figure 6 As shown, the gear ring 11 includes a toothed disc 1102 , and one or more shifting holes 1101 are formed on the end surface of the toothed disc 1102 .

[0063] Embodiment 3

[0064] See also Figure 1 As shown, the present invention is a permanent magnet coupler with variable magnet position and speed, including a conductor rotor assembly installed at the driving end of the permanent magnet coupler; and a permanent magnet rotor assembly installed at the load end of the permanent magnet coupler.

[0065] See also Figure 2 As shown, the conductor rotor assembly includes a first conductor disk 1 and a second conductor disk 7, and the outer edge of the first conductor disk 1 is connected to the outer edge of the second conductor disk 7 by a connecting member; the connecting member includes a spacer 5 and a bolt assembly, and the spacer 5 is located between the first conductor disk 1 and the second conductor disk 7, and is fixed by the bolt assembly, so that there is a certain distance between the first conductor disk 1 and the second conductor disk 7, which is used for clearance matching with the permanent magnet rotor assembly.

[0066] A fixing piece 3 for the driving end is fixed at the center of the first conductor disk 1; heat sinks 6 are fixed to the outer surface of the first conductor disk 1 and the outer surface of the second conductor disk 7 respectively; copper conductor disks 8 are fixed to the inner surface of the first conductor disk 1 and the inner surface of the second conductor disk 7 respectively.

[0067] See also Figure 3-5 As shown, the permanent magnet rotor assembly is located between the first conductor disk 1 and the second conductor disk 7; the permanent magnet rotor assembly includes a first rotor disk 2 and a second rotor disk 4 that are relatively coaxially matched; a coaxial gear ring 11 and a plurality of gear assemblies 9 that mesh with the gear ring 11 are installed in the first rotor disk 2 and the second rotor disk 4; a first annular groove 202 is formed on the surface of the first rotor disk 2 opposite to the second rotor disk 4, and a plurality of first through holes 203 are uniformly distributed along the surface of the first annular groove 202; the second rotor disk 4 is formed with a second annular groove 402 corresponding to the first annular groove 202, and a plurality of second through holes 403 corresponding to the first through holes 203 are uniformly distributed along the surface of the second annular groove 402.

[0068] A first shaft hole 201 is formed at the center of the first rotor disk 2; a second shaft hole 401 corresponding to the first shaft hole 201 is formed at the center of the second rotor disk 4; a fixing member 3 for the load end is fixed to the second shaft hole 401. An arc-shaped slot hole 404 is formed on the end surface of the second rotor disk 4 and is interlinked with the shifting hole 1101. The length of the arc-shaped slot hole 404 is greater than or equal to the circumference of the gear assembly 9.

[0069] See also Figure 7-8 As shown, a magnet 10 is fixed inside the gear assembly 9, and the magnetic poles of the magnets 10 of two adjacent gear assemblies 9 are opposite; the end face of the magnet 10 is parallel to the end face of the gear assembly 9; teeth 901 are provided on the circumferential side of the gear assembly 9; the teeth 901 of the gear assembly 9 are meshed with the gear ring 11; the gear assembly 9 is rotatably engaged between the second through hole 403 of the second rotor disk 4 and the first through hole 203 of the first rotor disk 2; the gear ring 11 is sleeved and rotatably engaged between the first annular groove 202 of the first rotor disk 2 and the second annular groove 402 of the second rotor disk 4.

[0070] The gear assembly 9 includes a first center line 902 and a radius R, and the magnet 10 includes a second center line 1001 ; the distance between the second center line 1001 and the first center line 902 is smaller than the radius R.

[0071] See also Fig.11 As shown, when the toggle hole 1101 is located at the other end of the arc slot 404, the magnet 10 is located close to the center of the second rotor disk 4, and the second center line 1001 of the magnet 10 and the diameter of the second rotor disk 4 are perpendicular to each other.

[0072] See also Figure 6 As shown, the gear ring 11 includes a toothed disc 1102 , and one or more shifting holes 1101 are formed on the end surface of the toothed disc 1102 .

[0073] One or more shifting holes 1101 are provided on the end surface of the toothed disc 1102 and are also equipped with a fixing screw. After the position of the gear ring 11 is adjusted, the gear ring 11 is fixed by the fixing screw to prevent the gear ring 11 from adjusting its position by itself under force.

[0074] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0075] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A permanent magnet coupler with variable magnet position and variable speed, comprising: A conductor rotor assembly mounted on the drive end of the permanent magnet coupler; The conductor rotor assembly comprises a first conductor disk (1) and a second conductor disk (7), wherein the outer edge of the first conductor disk (1) is connected to the outer edge of the second conductor disk (7) via a connecting piece; A permanent magnet rotor assembly installed at the load end of the permanent magnet coupler; the permanent magnet rotor assembly is located between the first conductor disk (1) and the second conductor disk (7); Features: The permanent magnet rotor assembly comprises a first rotor disk (2) and a second rotor disk (4) which are relatively coaxially matched; a coaxial gear ring (11) and a plurality of gear assemblies (9) which mesh with the gear ring (11) are installed in the first rotor disk (2) and the second rotor disk (4); Wherein, a magnet (10) is fixed inside the gear assembly (9), and the magnets (10) of two adjacent gear assemblies (9) have opposite magnetic poles; The gear ring (11) comprises a toothed disc (1102), and one or more shifting holes (1101) are formed on the end surface of the toothed disc (1102); The end surface of the second rotor disk (4) is provided with an arc-shaped slot hole (404) which is interpenetrating with the shifting hole (1101); A first annular groove (202) is formed on the surface of the first rotor disk (2) opposite to the second rotor disk (4), and a plurality of first through holes (203) are evenly distributed along the surface of the first annular groove (202); a second annular groove (402) corresponding to the first annular groove (202) is formed on the second rotor disk (4), and a plurality of second through holes (403) corresponding to the first through holes (203) are evenly distributed along the surface of the second annular groove (402); The end face of the magnet (10) and the end face of the gear assembly (9) are parallel to each other; teeth (901) are provided on the circumferential side of the gear assembly (9); and the teeth (901) of the gear assembly (9) mesh with the gear ring (11).

2. The variable magnet position speed-changing permanent magnet coupler according to claim 1, characterized in that: The connecting member comprises a spacer (5) and a bolt assembly, wherein the spacer (5) is located between the first conductor disc (1) and the second conductor disc (7) and is fixed by the bolt assembly.

3. The permanent magnet coupler with variable magnet position and speed change according to claim 1 or 2, characterized in that: Heat sinks (6) are fixed to the outer surface of the first conductor disk (1) and the outer surface of the second conductor disk (7), respectively; copper conductor disks (8) are fixed to the inner surface of the first conductor disk (1) and the inner surface of the second conductor disk (7), respectively.

4. The variable magnet position speed-changing permanent magnet coupler according to claim 3, characterized in that: A fixing piece (3) for the driving end is fixed at the center position of the first conductor disk (1).

5. The permanent magnet coupler with variable magnet position and speed change according to claim 1, characterized in that: A first axial hole (201) is formed at the center of the first rotor disk (2); a second axial hole (401) corresponding to the first axial hole (201) is formed at the center of the second rotor disk (4); and a fixing member (3) for a load end is fixed to the second axial hole (401).

6. The variable magnet position speed-changing permanent magnet coupler according to claim 1, characterized in that: The gear assembly (9) is rotationally engaged between the second through hole (403) of the second rotor disk (4) and the first through hole (203) of the first rotor disk (2); and the gear ring (11) is sleeved and rotationally engaged between the first annular groove (202) of the first rotor disk (2) and the second annular groove (402) of the second rotor disk (4).

7. The permanent magnet coupler with variable magnet position and speed according to claim 1, characterized in that: The gear assembly (9) comprises a first center line (902) and a radius R, and the magnet (10) comprises a second center line (1001); the distance between the second center line (1001) and the first center line (902) is smaller than the radius R.

8. The permanent magnet coupler with variable magnet position and speed according to claim 1, 2, 4, 6 or 7, characterized in that: The length of the arc-shaped slot hole (404) is greater than or equal to the circumference of the gear assembly (9).

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