Synchronous magnetic drive device

Abstract

This invention provides a synchronous magnetic drive device, comprising: an outer casing, a disc-type driven rotor body, a disc-type driving rotor body, an isolation sleeve, a cylindrical driven rotor body, and a cylindrical driving rotor body; the isolation sleeve is installed inside the outer casing; the disc-type driven rotor body is disposed on the outer side of the end of the isolation sleeve, and the disc-type driving rotor body is disposed on the inner side of the end of the isolation sleeve, the disc-type driven rotor body is connected to the driven shaft, and the disc-type driving rotor body is connected to the driving shaft; the cylindrical driven rotor body is disposed on the outer side of the periphery of the isolation sleeve, and the cylindrical driving rotor body is disposed on the inner side of the periphery of the isolation sleeve, the cylindrical driven rotor body is connected to the driven shaft, and the cylindrical driving rotor body is connected to the driving shaft. This application adopts a composite rotor structure of disc and cylindrical rotors, and by simultaneously arranging the disc rotor and cylindrical rotor to work together, a dual-channel transmission mechanism of axial and radial directions is formed, achieving the technical effect of efficient bidirectional magnetic coupling within a limited volume.

Description

Technical Field

[0001] This invention relates to the field of electromechanical equipment technology, specifically to a synchronous magnetic drive device. More particularly, it relates to a synchronous magnetic drive device with high transmission power density. Background Technology

[0002] Synchronous magnetic drive systems, as fully sealed and leak-free power equipment, are widely used in highly polluting industries such as petrochemicals, metallurgy, power generation, and nuclear power. They effectively replace traditional rotary dynamic seals, completely solving problems such as leakage and spillage in traditional equipment. Utilizing magnetic coupling technology to transmit power, they are particularly suitable for transporting highly corrosive, flammable, explosive, valuable, and toxic fluids, playing a crucial role in solving industrial leakage problems. With the continuous expansion of industrial production scale, the application demand for synchronous magnetic drive systems is gradually developing towards higher power, especially in the field of high torque transmission, where their importance is becoming increasingly prominent.

[0003] However, with the increase in power of synchronous magnetic drive devices, how to improve the torque transmission capability within a limited space has become a bottleneck restricting its development. Traditional synchronous magnetic drive devices mostly use radial or axial coupling for torque transmission. However, due to the limitations of structural design, the installation layout of permanent magnets is relatively simple, usually relying on only a single radial or axial dimension to arrange permanent magnets. This design method leads to the waste of internal usable space and cannot maximize the utilization of the magnetic efficiency of permanent magnets within a limited space, thus limiting the performance and transmission capability of the device.

[0004] As synchronous magnetic drive devices are gradually applied to tasks requiring higher torque transmission, their size is increasing, making the effective utilization of internal space particularly important. Optimizing magnetic circuit design, reducing magnetic leakage losses, and improving torque transmission capacity per unit volume are key to enhancing device performance. How to effectively arrange permanent magnets in a compact space and utilize more precise magnetic field design to improve the magnetic energy utilization and torque transmission efficiency of the device has become the core challenge in the development of synchronous magnetic drive device technology. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the purpose of this invention is to provide a synchronous magnetic drive device.

[0006] A synchronous magnetic drive device according to the present invention includes: an outer shell, a disc-type driven rotor body, a disc-type driving rotor body, an isolation sleeve, a cylindrical driven rotor body, and a cylindrical driving rotor body;

[0007] An isolation sleeve is installed inside the outer shell;

[0008] A disc-shaped driven rotor body is provided on the outer side of the end of the isolation sleeve, and a disc-shaped driving rotor body is provided on the inner side of the end of the isolation sleeve. The disc-shaped driven rotor body is connected to the driven shaft, and the disc-shaped driving rotor body is connected to the driving shaft.

[0009] A cylindrical driven rotor body is provided on the outer side of the isolation sleeve, and a cylindrical driving rotor body is provided on the inner side of the isolation sleeve. The cylindrical driven rotor body is connected to the driven shaft, and the cylindrical driving rotor body is connected to the driving shaft.

[0010] Preferably, the disc-type driven rotor body includes: a disc-type driven rotor mounting base, a disc-type driven rotor back iron, a driven rotor bushing, and a disc-type driven rotor cover;

[0011] The driven rotor bushing is mounted on the driven shaft, the disc driven rotor back iron is connected to the driven rotor bushing, the first disc rotor permanent magnet is mounted on the disc driven rotor back iron, a disc driven rotor cover for sealing the first disc rotor permanent magnet is provided on one side of the disc driven rotor back iron, and a disc driven rotor fixing seat for axial limiting is provided at the end of the first disc rotor permanent magnet.

[0012] Preferably, the disc-type active rotor body includes: a disc-type active rotor cover, a disc-type active rotor back iron, and a disc-type active rotor mounting base;

[0013] The disc-type active rotor back iron is mounted on the active shaft, and a second disc-type rotor permanent magnet is mounted on the disc-type active rotor back iron. A disc-type active rotor cover for sealing the second disc-type rotor permanent magnet is provided on one side of the disc-type active rotor back iron, and a disc-type active rotor fixing seat for axial limiting is provided at the end of the second disc-type rotor permanent magnet.

[0014] Preferably, the cylindrical driven rotor body includes: a cylindrical driven rotor back iron, a cylindrical driven rotor circumferentially magnetized permanent magnet, a cylindrical driven rotor radially magnetized permanent magnet, a cylindrical driven rotor cover, a cylindrical driven rotor fixing seat, and a cylindrical driven rotor axial end cover.

[0015] The cylindrical driven rotor back iron is mounted on the driven rotor bushing, and the cylindrical driven rotor circumferentially magnetized permanent magnet and the cylindrical driven rotor radially magnetized permanent magnet are arranged in a Halbach array around the driving shaft on the cylindrical driven rotor back iron.

[0016] A cylindrical driven rotor cover is provided on one side of the cylindrical driven rotor back iron for sealing the circumferentially magnetized permanent magnet and the radially magnetized permanent magnet of the cylindrical driven rotor. Cylindrical driven rotor axial end caps are installed at the ends of the cylindrical driven rotor back iron and the cylindrical driven rotor cover. The circumferentially magnetized permanent magnet and the radially magnetized permanent magnet of the cylindrical driven rotor are limited by a cylindrical driven rotor fixing seat in the axial direction parallel to the drive shaft.

[0017] Preferably, the cylindrical active rotor body includes: a cylindrical active rotor cover, a cylindrical active rotor circumferentially magnetized permanent magnet, a cylindrical active rotor radially magnetized permanent magnet, a cylindrical active rotor back iron, an active rotor bushing, a cylindrical active rotor fixing seat, and a cylindrical active rotor axial end cover.

[0018] The active rotor bushing is installed on the circumferential side of the active shaft, the cylindrical active rotor back iron is connected to the active rotor bushing, and the circumferentially magnetized permanent magnet of the cylindrical active rotor and the radially magnetized permanent magnet of the cylindrical active rotor are arranged in a Halbach array around the active shaft on the cylindrical active rotor back iron.

[0019] A cylindrical active rotor cover is provided on one side of the cylindrical active rotor back iron for sealing the circumferentially magnetized permanent magnet and the radially magnetized permanent magnet of the cylindrical active rotor. Cylindrical active rotor axial end caps are installed at the ends of the cylindrical active rotor back iron and the cylindrical active rotor cover. The circumferentially magnetized permanent magnet and the radially magnetized permanent magnet of the cylindrical active rotor are limited by a cylindrical active rotor fixing seat in the axial direction parallel to the active shaft.

[0020] Preferably, the first disc rotor permanent magnet and the second disc rotor permanent magnet are arranged in parallel and both adopt disc circumferential magnetized permanent magnets and disc axial magnetized permanent magnets arranged in a halbach array.

[0021] Preferably, the cylindrical driven rotor back iron is provided with a first groove for positioning the circumferentially magnetized permanent magnet of the cylindrical driven rotor.

[0022] Preferably, the disc-type driven rotor back iron is provided with a second groove for positioning the disc-type circumferentially magnetized permanent magnet.

[0023] Preferably, the disc-type active rotor mounting base is connected to the active rotor bushing.

[0024] Preferably, the cylindrical driven rotor back iron, the cylindrical driven rotor cover, the cylindrical active rotor cover, the cylindrical active rotor back iron, and the active rotor bushing are cylindrical and coaxial with the active shaft and the driven shaft.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. This application adopts a composite rotor structure of disc and cylindrical types. By simultaneously arranging the disc driven rotor body and the cylindrical driven rotor body in the isolation sleeve, and making the disc active rotor body and the cylindrical active rotor body work together, a dual-channel transmission mechanism of axial and radial is formed. This achieves the technical effect of efficient bidirectional magnetic coupling within a limited volume. Compared with the existing technology that only uses a single magnetic force device arranged axially or radially, and cannot utilize the space in two directions at the same time, the structure of this application significantly improves the magnet arrangement density and coupling area, and fundamentally solves the problems of low space utilization and small torque output per unit volume.

[0027] 2. This application employs Halbach array magnet design in both disc and cylindrical rotor structures. For example, the axially magnetized permanent magnets installed on the back iron of the disc driven rotor form a three-dimensional interlaced Halbach array, and the axially magnetized permanent magnets embedded on the back iron of the cylindrical driving rotor are arranged in combination with radially magnetized permanent magnets. This achieves the technical effect of directionally guiding magnetic flux and enhancing the magnetic flux density on one side. Compared with the problems of magnetic circuit dispersion and large losses caused by disordered or simple magnetization methods in traditional magnetic transmission, this application effectively improves the magnetic flux concentration and significantly improves the magnetic coupling efficiency through precise magnetic vector superposition.

[0028] 3. This application achieves fully enclosed protection for the permanent magnet module by incorporating sealed encapsulation components such as disc-type active rotor covers and cylindrical driven rotor covers into the structure and welding them to the rotor end caps and mounting bases. At the same time, combined with the non-magnetic material fixing structure, it achieves technical effects of corrosion resistance, anti-detachment, and high temperature and humidity resistance. Compared with the problems of easy moisture, magnet exposure, and short lifespan in existing magnetic devices, this application has made innovative designs in terms of structural sealing and environmental adaptability, significantly enhancing the long-term stable operation capability of the device in high humidity and high corrosion environments such as petrochemical and deep sea environments. Attached Figure Description

[0029] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0030] Figure 1 This is a schematic diagram of the synchronous magnetic drive device.

[0031] Figure 2 This is a schematic cross-sectional view of a cylindrical master-slave rotor;

[0032] Figure 3 A schematic diagram showing the arrangement of disc-type and cylindrical permanent magnets;

[0033] Figure 4 A schematic diagram of the back iron structure of a cylindrical driven rotor;

[0034] Figure 5 This is a schematic diagram of the back iron structure of a disc-type driven rotor;

[0035] The figure shows: outer shell 1, disc driven rotor body 2, disc driving rotor body 3, isolation sleeve 4, cylindrical driven rotor body 5, cylindrical driving rotor body 6, disc circumferentially magnetized permanent magnet 7, disc axially magnetized permanent magnet 8, disc driven rotor mounting base 9, cylindrical driven rotor back iron 10, first groove 101, cylindrical driven rotor circumferentially magnetized permanent magnet 11, cylindrical driven rotor radially magnetized permanent magnet 12, cylindrical driven rotor cover 13, cylindrical driving rotor cover 14, cylindrical driving rotor circumferentially magnetized permanent magnet 15. Radial magnetized permanent magnet of cylindrical active rotor 16. Back iron of cylindrical active rotor 17. Active rotor bushing 18. Active shaft 19. Back iron of disc driven rotor 20. Second groove 201. Driven rotor bushing 21. Disc driven rotor cover 22. Disc active rotor cover 23. Cylindrical active rotor mounting base 24. Back iron of disc active rotor 25. Disc active rotor mounting base 26. Axial end cover of cylindrical active rotor 27. Cylindrical driven rotor mounting base 28. Axial end cover of cylindrical driven rotor 29. Driven shaft 30. Detailed Implementation

[0036] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0037] Example 1

[0038] like Figure 1 As shown, this embodiment includes: an outer shell 1, a disc-type driven rotor body 2, a disc-type driving rotor body 3, an isolation sleeve 4, a cylindrical driven rotor body 5, and a cylindrical driving rotor body 6. The isolation sleeve 4 is installed inside the outer shell 1 to achieve contactless coupling transmission between the driving rotor and the driven rotor. The disc-type driven rotor body 2 is located on the outer side of the end of the isolation sleeve 4, and the disc-type driving rotor body 3 is located on the inner side of the end of the isolation sleeve 4. The disc-type driven rotor body 2 is connected to the driven shaft 30, and the disc-type driving rotor body 3 is connected to the driving shaft 19. The cylindrical driven rotor body 5 is located on the outer periphery of the isolation sleeve 4, and the cylindrical driving rotor body 6 is located on the inner periphery of the isolation sleeve 4. The cylindrical driven rotor body 5 is connected to the driven shaft 30, and the driving shaft 19 is connected internally to the cylindrical driving rotor body 6.

[0039] The disc-type driven rotor body 2 includes: a disc-type driven rotor mounting base 9, a disc-type driven rotor back iron 20, a driven rotor bushing 21, and a disc-type driven rotor cover 22; the driven rotor bushing 21 is mounted on the driven shaft 30, the disc-type driven rotor back iron 20 is connected to the driven rotor bushing 21, a first disc-type rotor permanent magnet is mounted on the disc-type driven rotor back iron 20, a disc-type driven rotor cover 22 for sealing the first disc-type rotor permanent magnet is welded to one side of the disc-type driven rotor back iron 20, and a disc-type driven rotor mounting base 9 for axial limiting is provided at the end of the first disc-type rotor permanent magnet. Figure 5 As shown, a second groove 201 for positioning the disc-type circumferentially magnetized permanent magnet 7 is provided on the disc-type driven rotor back iron 20.

[0040] The disc-type active rotor body 3 includes: a disc-type active rotor cover 23, a disc-type active rotor back iron 25, and a disc-type active rotor mounting base 26. The disc-type active rotor back iron 25 is mounted on the active shaft 19, and a second disc-type rotor permanent magnet is mounted on the disc-type active rotor back iron 25. A disc-type active rotor cover 23 for sealing the second disc-type rotor permanent magnet is provided on one side of the disc-type active rotor back iron 25, and a disc-type active rotor mounting base 26 for axial positioning is provided at the end of the second disc-type rotor permanent magnet. The disc-type active rotor mounting base 26 is bolted to the active rotor shaft sleeve 18. The disc-type active rotor cover 23 and the disc-type active rotor mounting base 26 are welded and fixed to achieve magnet encapsulation and rust prevention functions.

[0041] The cylindrical driven rotor body 5 includes: a cylindrical driven rotor back iron 10, a cylindrical driven rotor circumferentially magnetized permanent magnet 11, a cylindrical driven rotor radially magnetized permanent magnet 12, a cylindrical driven rotor guard 13, a cylindrical driven rotor mounting base 28, and a cylindrical driven rotor axial end cover 29; the cylindrical driven rotor back iron 10 is mounted on the driven rotor bushing 21, and the cylindrical driven rotor circumferentially magnetized permanent magnet 11 and the cylindrical driven rotor radially magnetized permanent magnet 12 are arranged in a Halbach array around the drive shaft 19 on the cylindrical driven rotor. On the rotor back iron 10, a cylindrical driven rotor cover 13 is provided on one side of the cylindrical driven rotor back iron 10 for sealing the circumferentially magnetized permanent magnet 11 and the radially magnetized permanent magnet 12 of the cylindrical driven rotor. A cylindrical driven rotor axial end cap 29 is installed at the ends of the cylindrical driven rotor back iron 10 and the cylindrical driven rotor cover 13. The circumferentially magnetized permanent magnet 11 and the radially magnetized permanent magnet 12 of the cylindrical driven rotor are limited by a cylindrical driven rotor fixing seat 28 along the axial direction parallel to the drive shaft 19. Figure 4As shown, a first groove 101 for positioning the circumferentially magnetized permanent magnet 11 of the cylindrical driven rotor is provided on the back iron 10 of the cylindrical driven rotor. The circumferentially magnetized permanent magnet 11 of the cylindrical driven rotor is connected to the radially magnetized permanent magnet 12 of the cylindrical driven rotor to achieve circumferential positioning of the radially magnetized permanent magnet 12 of the cylindrical driven rotor. Axially, it is positioned with the cylindrical driven rotor fixing seat 28 through the axial end cover 29 of the cylindrical driven rotor. The cylindrical driven rotor cover 13 is welded to the axial end cover 29 of the cylindrical driven rotor to achieve the enclosure of the circumferentially magnetized permanent magnet 11 and the radially magnetized permanent magnet 12 of the cylindrical driven rotor, protecting the circumferentially magnetized permanent magnet 11 and the radially magnetized permanent magnet 12 of the cylindrical driven rotor from corrosion.

[0042] Combination Figure 2 As shown, the cylindrical active rotor body 6 includes: a cylindrical active rotor cover 14, a cylindrical active rotor circumferentially magnetized permanent magnet 15, a cylindrical active rotor radially magnetized permanent magnet 16, a cylindrical active rotor back iron 17, an active rotor bushing 18, a cylindrical active rotor mounting base 24, and a cylindrical active rotor axial end cover 27; the active rotor bushing 18 is mounted on the circumference of the active shaft 19, the cylindrical active rotor back iron 17 is connected to the active rotor bushing 18, and the cylindrical active rotor circumferentially magnetized permanent magnet 15 and the cylindrical active rotor radially magnetized permanent magnet 16 are arranged around the active shaft 19 in an h-shaped manner. The albach array is arranged on the back iron 17 of the cylindrical active rotor; a cylindrical active rotor cover 14 is provided on one side of the cylindrical active rotor back iron 17 for sealing the circumferential magnetized permanent magnet 15 and the radial magnetized permanent magnet 16 of the cylindrical active rotor; the cylindrical active rotor axial end cap 27 is installed at the end of the cylindrical active rotor back iron 17 and the cylindrical active rotor cover 14; the circumferential magnetized permanent magnet 15 and the radial magnetized permanent magnet 16 of the cylindrical active rotor are limited by the cylindrical active rotor fixing seat 24 in the axial direction parallel to the active shaft 19. The circumferentially magnetized permanent magnet 15 of the cylindrical active rotor is embedded in the groove of the cylindrical active rotor back iron 17. A new groove is formed between the circumferentially magnetized permanent magnets 15 to accommodate the radially magnetized permanent magnets 16 of the cylindrical active rotor, thus achieving circumferential positioning of the radially magnetized permanent magnets 16 of the cylindrical active rotor. In this embodiment, other rotor back irons can also use this method to achieve circumferential positioning of the two permanent magnets. Axially, positioning is achieved through the cylindrical active rotor fixing seat 24 and the cylindrical active rotor axial end cover 27. The cylindrical active rotor cover 14 is welded to the cylindrical active rotor fixing seat 24 and the cylindrical active rotor axial end cover 27. The circumferentially magnetized permanent magnets 15 and the radially magnetized permanent magnets 16 of the cylindrical active rotor are installed into the cylindrical active rotor back iron 17 in a Halbach manner and sealed and positioned by a fixing structure of non-magnetic material.

[0043] Combination Figure 3As shown, in one embodiment, the first and second disc rotor permanent magnets are both arranged in parallel and both employ concentric rings arranged in a Halbach array with alternating circumferential and axially magnetized permanent magnets 7 and 8. The disc rotor uses circumferential and axially magnetized permanent magnets 7 and 8 arranged in a Halbach array with alternating circumferential and axial arrangement to achieve unilateral magnetic flux enhancement. The cylindrical rotor employs cylindrical driven rotor circumferential magnets 11, cylindrical driven rotor radial magnets 12, cylindrical driving rotor circumferential magnets 15, and cylindrical driving rotor radial magnets 16 arranged in a Halbach array along the cylindrical surface. This improves magnetic flux directionality through magnetic vector superposition, achieving a higher coupled magnetic field strength with the same amount of magnets.

[0044] In one embodiment, the driven rotor bushing 21 is connected to the driven shaft 30 via a key connection, and the disc-type driving rotor mounting base 26 is connected to the driving shaft 19 via the driving rotor bushing 18, thereby achieving a high-precision and high-strength transmission connection.

[0045] In one embodiment, the cylindrical driven rotor back iron 10, the cylindrical driven rotor cover 13, the cylindrical driving rotor cover 14, the cylindrical driving rotor back iron 17, and the driving rotor bushing 18 are cylindrical and coaxial with the driving shaft 19 and the driven shaft 30.

[0046] Working principle: The drive shaft 19 rotates under external drive, driving the drive rotor bushing 18 to rotate synchronously. The drive rotor bushing 18 is connected to the cylindrical drive rotor back iron 17. The cylindrical drive rotor back iron 17 is embedded with the cylindrical drive rotor circumferential magnetized permanent magnet 15 and the cylindrical drive rotor radial magnetized permanent magnet 16. The two are arranged in a Halbach pattern to form a directional magnetic field. The cylindrical drive rotor cover 14 is welded to the disc drive rotor fixing seat 26 and the cylindrical drive rotor axial end cover 27 to encapsulate the above permanent magnet structure and provide protection. The disc drive rotor fixing seat 26 is also connected to the disc drive rotor back iron 25. The disc drive rotor back iron 25 is provided with grooves for embedding the disc circumferential magnetized permanent magnet 7 and the disc axial magnetized permanent magnet 8. The two are arranged alternately to form a disc Halbach magnetic array, which further improves the magnetic flux density and coupling strength. The disc-type active rotor cover 23 encapsulates the permanent magnets and protects their surface from corrosion. When the active shaft 19 rotates, the magnetic field acts on the driven end through the bidirectional magnetic coupling field jointly constructed by the cylindrical and disc-type Halbach magnets. The disc-type driven rotor body 2 and the cylindrical driven rotor body 5 at the driven end rotate synchronously in response to changes in magnetic force. The disc-type driven rotor body 2 is connected to the driven shaft 30 by the driven rotor bushing 21. The driven rotor bushing 21 is fitted with the disc-type driven rotor back iron 20. The disc-type driven rotor back iron 20 is provided with a second groove 201 for fixing the disc-type circumferentially magnetized permanent magnet 7 and the disc-type axially magnetized permanent magnet 8, and is welded and sealed to the disc-type driven rotor cover 22 to protect the permanent magnets from corrosion. The cylindrical driven rotor body 5 is screwed to the driven rotor bushing 21 via a cylindrical driven rotor back iron 10. A first groove 101 is provided on the cylindrical driven rotor back iron 10 for positioning the circumferentially magnetized permanent magnet 11 of the cylindrical driven rotor. A composite Halbach array is formed between the circumferentially magnetized permanent magnet 11 and the radially magnetized permanent magnet 12 of the cylindrical driven rotor, enhancing the radial magnetic field concentration effect. Both are mounted on the cylindrical driven rotor back iron 10. Axial positioning is achieved through the cylindrical driven rotor axial end cover 29 and the cylindrical driven rotor fixing seat 28. The cylindrical driven rotor cover 13 is welded to the surface of the cylindrical driven rotor axial end cover 29 for overall encapsulation. The isolation sleeve 4 completely isolates the aforementioned active and driven rotor systems and is installed inside the outer casing 1 to form a closed structure. This allows the disc and cylindrical rotor systems to form a dual-coupled transmission path, achieving efficient magnetic drive in both axial and radial dimensions. This effectively increases the torque output per unit volume within a limited volume. The arrangement of Halbach array permanent magnets creates unilateral magnetic flux enhancement, improving magnetic field utilization and reducing magnetic leakage. Combined with a non-magnetic material fixing structure, magnetic field interference is eliminated, further enhancing the stability and environmental adaptability of the transmission system.

[0047] Example 2

[0048] Example 2 is a preferred example of Example 1.

[0049] This embodiment optimizes magnetic force transmission and space utilization efficiency by adopting a highly efficient Halbach array magnet design, enabling higher torque output within a limited volume. Through the composite structure of disc and cylindrical rotors, it makes full use of axial and radial space, improving the magnetic energy transmission capacity per unit volume while ensuring transmission stability.

[0050] like Figure 1-5 As shown, this embodiment includes: an outer shell 1, an isolation sleeve 4 disposed inside the outer shell 1, a disc-type driven rotor body 2 disposed on the outer side of the end of the isolation sleeve 4, a disc-type driving rotor body 3 disposed at one end of the disc-type driven rotor body 2, a cylindrical driven rotor body 5 disposed on the outer periphery of the isolation sleeve 4, a cylindrical driving rotor body 6 disposed inside the cylindrical driven rotor body 5, and a driving shaft 19 disposed inside the cylindrical driving rotor body 6; the isolation sleeve 4 is installed on the outer shell 1 to realize contactless coupling transmission between the driving rotor (disc-type driving rotor body 3, cylindrical driving rotor body 6) and the driven rotor (disc-type driven rotor body 2, cylindrical driven rotor body 5), and the driving shaft 19 is connected to the driving rotor. Next, the driven shaft 30 is connected to the driven rotor, and efficient torque transmission is achieved through the permanent magnets arranged in a Halbach array. The disc driven rotor body 2 includes a driven rotor bushing 21, a disc driven rotor back iron 20, and a disc driven rotor cover 22. A disc axially magnetized permanent magnet 8 is installed on the outside of the disc driven rotor back iron 20. A second groove 201 is opened on the disc driven rotor back iron 20. A disc circumferentially magnetized permanent magnet 7 is provided on one side of the disc axially magnetized permanent magnet 8. The disc circumferentially magnetized permanent magnet 7 and the disc axially magnetized permanent magnet 8 are installed in the second groove 201 of the disc driven rotor back iron 20 in a Halbach array and are welded and sealed by the disc driven rotor cover 22.

[0051] The disc-type active rotor body 3 includes: a disc-type active rotor mounting base 26 and a disc-type active rotor back iron 25. The disc-type active rotor back iron 25 is connected to a disc-type circumferentially magnetized permanent magnet 7. The outer side of the disc-type active rotor body 3 is connected to a disc-type active rotor cover 23. The disc-type active rotor back iron 25 is provided with grooves for positioning the disc-type circumferentially magnetized permanent magnet 7 and the disc-type axially magnetized permanent magnet 8. The disc-type active rotor cover 23 is welded and fixed to the disc-type active rotor mounting base 26 to achieve magnet encapsulation and rust prevention functions. The disc-type active rotor body 3 combines the disc-type active rotor back iron 25 with the disc-type circumferentially magnetized permanent magnet 7 and the disc-type axially magnetized permanent magnet 8. By utilizing the Halbach array magnet arrangement, the distribution of magnetic field lines is optimized, thereby effectively enhancing the magnetic field strength in the magnetic coupling region. This design not only improves the directionality of the magnetic field but also reduces magnetic leakage, allowing the magnets to be used efficiently. In addition, the welded encapsulation of the disc-type active rotor cover 23 and the disc-type active rotor mounting base 26 protects the permanent magnets from external corrosion and ensures the stability of the magnets during transmission.

[0052] The cylindrical driven rotor body 5 includes: a cylindrical driven rotor back iron 10, a cylindrical driven rotor circumferentially magnetized permanent magnet 11, a cylindrical driven rotor radially magnetized permanent magnet 12, a cylindrical driven rotor cover 13, a cylindrical driven rotor fixing seat 28, and a cylindrical driven rotor axial end cover 29. The cylindrical driven rotor back iron 10 is connected to the driven rotor shaft sleeve 21 by bolts. The cylindrical driven rotor circumferentially magnetized permanent magnet 11 and the cylindrical driven rotor radially magnetized permanent magnet 12 are sequentially... The cylindrical driven rotor back iron 10 is installed and connected to it. The circumferentially magnetized permanent magnet 11 of the cylindrical driven rotor is embedded in the first groove 101 of the cylindrical driven rotor back iron 10 to achieve circumferential positioning. The circumferentially magnetized permanent magnet 11 of the cylindrical driven rotor is connected to the radially magnetized permanent magnet 12 of the cylindrical driven rotor to achieve circumferential positioning of the radially magnetized permanent magnet 12 of the cylindrical driven rotor. Axially, it is positioned by the cylindrical driven rotor fixing seat 28 and the cylindrical driven rotor axial end cover 29. The cylindrical driven rotor cover 13 is welded to the cylindrical driven rotor axial end cover 29 to enclose the circumferentially magnetized permanent magnet 11 and the radially magnetized permanent magnet 12 of the cylindrical driven rotor, protecting the permanent magnets from corrosion. The cylindrical driven rotor body 5, through the combination of the cylindrical driven rotor back iron 10, the cylindrical driven rotor circumferentially magnetized permanent magnet 11, and the cylindrical driven rotor radially magnetized permanent magnet 12, further enhances the coupling effect of the radial and axial magnetic fields. The first groove 101 in the cylindrical driven rotor back iron 10 and the cylindrical driven rotor circumferentially magnetized permanent magnet 11 work together to achieve precise positioning of the magnets, reduce magnetic field loss, and improve coupling efficiency. The cylindrical driven rotor cover 13 not only protects the permanent magnets from external damage but also ensures their stable operation and improves the durability of the device in harsh environments. The cylindrical driven rotor axial end cover 29 and the cylindrical driven rotor fixing seat 28 effectively ensure the axial positioning of the cylindrical driven rotor assembly, ensuring the accuracy and efficiency of magnetic field transmission.

[0053] The cylindrical active rotor body 6 includes: a cylindrical active rotor back iron 17, a cylindrical active rotor circumferentially magnetized permanent magnet 15, a cylindrical active rotor radially magnetized permanent magnet 16, a cylindrical active rotor cover 14, an active rotor bushing 18, a cylindrical active rotor mounting base 24, and a cylindrical active rotor axial end cap 27. The cylindrical active rotor circumferentially magnetized permanent magnet 15 is embedded in the groove of the cylindrical active rotor back iron 17, and grooves are formed between the cylindrical active rotor circumferentially magnetized permanent magnets 15 to accommodate the cylindrical active rotor radially magnetized permanent magnet 16. 6. The circumferential positioning of the radially magnetized permanent magnet 16 of the cylindrical active rotor is achieved, and the axial positioning is achieved through the cylindrical active rotor fixing seat 24 and the cylindrical active rotor axial end cover 27. The cylindrical active rotor cover 14 is welded to the cylindrical active rotor fixing seat 24 and the cylindrical active rotor axial end cover 27. The circumferentially magnetized permanent magnet 15 and the radially magnetized permanent magnet 16 of the cylindrical active rotor are installed into the cylindrical active rotor back iron 17 in a halbach manner and sealed and positioned by a fixing structure of non-magnetic material. The cylindrical active rotor body 6 adopts a similar design. Through the precise arrangement of the cylindrical active rotor back iron 17, the cylindrical active rotor circumferential magnetized permanent magnet 15, and the cylindrical active rotor radial magnetized permanent magnet 16, the concentration and directionality of the magnetic force are further enhanced, ensuring the effective transmission of magnetic flux. The cylindrical active rotor circumferential magnetized permanent magnet 15 and the cylindrical active rotor radial magnetized permanent magnet 16 are arranged in a Halbach manner, which not only reduces magnetic leakage but also increases the magnetic flux intensity, making the magnetic force transmission more efficient. The cylindrical active rotor mounting base 24 and the cylindrical active rotor axial end cover 27 ensure the axial stability of the active rotor assembly. The cylindrical active rotor cover 14 provides further protection and enhances the device's environmental resistance and corrosion resistance. The use of non-magnetic materials avoids magnetic field interference, making the magnetic force transmission more stable and reducing unnecessary energy loss.

[0054] The disc rotor uses a circumferentially magnetized permanent magnet 7 and an axially magnetized permanent magnet 8 connected in a circumferentially and axially staggered Halbach array to achieve unilateral magnetic flux enhancement. The cylindrical rotor uses a circumferentially magnetized permanent magnet 11, a radially magnetized permanent magnet 12, a circumferentially magnetized permanent magnet 15, and a radially magnetized permanent magnet 16 arranged in a Halbach array along the cylindrical surface. By superimposing magnetic vectors, the magnetic flux directionality is improved, achieving a higher coupled magnetic field strength with the same amount of magnets. This further improves the efficiency and stability of magnetic force transmission. This design effectively reduces magnetic field leakage and makes the magnetic coupling tighter, thereby improving torque output capability.

[0055] The driven rotor bushing 21 is connected to the driven shaft 30 via a key connection, while the disc-type active rotor mounting base 26 is connected to the active shaft 19 via the active rotor bushing 18, forming a high-precision and high-strength transmission connection. This ensures the stability and reliability of the magnetic force transmission process. During the transmission process, the disc and cylindrical rotors transmit torque through precise magnetic coupling, resulting in concentrated and efficient magnetic lines of force, which greatly improves the overall efficiency and output capacity of the device.

[0056] To ensure long-term stable operation in harsh working environments, the cylindrical driven rotor cover 13, the cylindrical driven rotor cover 14, the disc driven rotor cover 22, and the disc driven rotor cover 23 are all connected to the shaft sleeve or fixed seat by welding structure, forming a sealed structure. This sealed structure effectively prevents corrosion of the permanent magnet and ensures the long-term stability of the magnet in environments with high temperature, high humidity, and corrosion.

[0057] The disc-type driven rotor body 2, through the sealing design of the disc-type driven rotor back iron 20 and the disc-type driven rotor cover 22, combined with the staggered arrangement of the disc-type axially magnetized permanent magnets 8 and the disc-type circumferentially magnetized permanent magnets 7, significantly enhances the directionality and strength of the magnetic field, ensuring the effective concentration of magnetic lines of force and improving the utilization rate of permanent magnets. The layout between the cylindrical driven rotor body 5 and the cylindrical active rotor body 6 further improves the transmission efficiency, and through the structural design of the cylindrical driven rotor back iron 10 and the cylindrical active rotor back iron 17, leakage magnetic loss is reduced, further optimizing the concentration and transmission of the magnetic field. The isolation sleeve 4 effectively isolates the active rotor and the driven rotor, realizing contactless transmission and avoiding frictional losses in traditional sealing devices. Through the magnetic coupling between the active shaft 19 and the driven shaft 30, efficient torque transmission is achieved. At the same time, all permanent magnets are sealed and encapsulated by the rotor cover, protecting the permanent magnets from the influence of the external environment and improving the durability and adaptability of the device.

[0058] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0059] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A synchronous magnetic drive device, characterized in that, include: The outer shell (1), the disc driven rotor body (2), the disc driving rotor body (3), the isolation sleeve (4), the cylindrical driven rotor body (5), and the cylindrical driving rotor body (6). An isolation sleeve (4) is installed inside the outer shell (1); A disc-type driven rotor body (2) is provided on the outer side of the end of the isolation sleeve (4), and a disc-type active rotor body (3) is provided on the inner side of the end of the isolation sleeve (4). The disc-type driven rotor body (2) is connected to the driven shaft (30), and the disc-type active rotor body (3) is connected to the active shaft (19). A cylindrical driven rotor body (5) is provided on the outer side of the isolation sleeve (4), and a cylindrical active rotor body (6) is provided on the inner side of the isolation sleeve (4). The cylindrical driven rotor body (5) is connected to the driven shaft (30), and the cylindrical active rotor body (6) is connected to the active shaft (19). The disc driven rotor body (2) includes: a disc driven rotor fixing seat (9), a disc driven rotor back iron (20), a driven rotor bushing (21), and a disc driven rotor cover (22). The driven rotor bushing (21) is mounted on the driven shaft (30), the disc driven rotor back iron (20) is connected to the driven rotor bushing (21), the first disc rotor permanent magnet is mounted on the disc driven rotor back iron (20), a disc driven rotor cover (22) for sealing the first disc rotor permanent magnet is provided on one side of the disc driven rotor back iron (20), and a disc driven rotor fixing seat (9) for axial limiting is provided at the end of the first disc rotor permanent magnet. The disc-type active rotor body (3) includes: a disc-type active rotor cover (23), a disc-type active rotor back iron (25), and a disc-type active rotor mounting base (26). The disc-type active rotor back iron (25) is mounted on the active shaft (19). A second disc-type rotor permanent magnet is mounted on the disc-type active rotor back iron (25). A disc-type active rotor cover (23) for sealing the second disc-type rotor permanent magnet is provided on one side of the disc-type active rotor back iron (25). A disc-type active rotor fixing seat (26) for axial limiting is provided at the end of the second disc-type rotor permanent magnet. The cylindrical driven rotor body (5) includes: a cylindrical driven rotor back iron (10), a cylindrical driven rotor circumferential magnetized permanent magnet (11), a cylindrical driven rotor radial magnetized permanent magnet (12), a cylindrical driven rotor cover (13), a cylindrical driven rotor fixing seat (28), and a cylindrical driven rotor axial end cover (29). The cylindrical driven rotor back iron (10) is mounted on the driven rotor bushing (21). The cylindrical driven rotor circumferential magnetized permanent magnet (11) and the cylindrical driven rotor radial magnetized permanent magnet (12) are arranged in a halbach array around the drive shaft (19) on the cylindrical driven rotor back iron (10). A cylindrical driven rotor cover (13) is provided on one side of the cylindrical driven rotor back iron (10) for sealing the cylindrical driven rotor circumferential magnetized permanent magnet (11) and the cylindrical driven rotor radial magnetized permanent magnet (12). A cylindrical driven rotor axial end cap (29) is installed at the end of the cylindrical driven rotor back iron (10) and the cylindrical driven rotor cover (13). The cylindrical driven rotor circumferential magnetized permanent magnet (11) and the cylindrical driven rotor radial magnetized permanent magnet (12) are limited by a cylindrical driven rotor fixing seat (28) in the axial direction parallel to the drive shaft (19). The cylindrical active rotor body (6) includes: a cylindrical active rotor cover (14), a cylindrical active rotor circumferential magnetized permanent magnet (15), a cylindrical active rotor radial magnetized permanent magnet (16), a cylindrical active rotor back iron (17), an active rotor bushing (18), a cylindrical active rotor fixing seat (24), and a cylindrical active rotor axial end cover (27). The active rotor bushing (18) is installed on the periphery of the active shaft (19), and the cylindrical active rotor back iron (17) is connected to the active rotor bushing (18). The cylindrical active rotor circumferential magnetized permanent magnet (15) and the cylindrical active rotor radial magnetized permanent magnet (16) are arranged in a Halbach array around the active shaft (19) on the cylindrical active rotor back iron (17). A cylindrical active rotor cover (14) is provided on one side of the cylindrical active rotor back iron (17) for sealing the cylindrical active rotor circumferential magnetized permanent magnet (15) and the cylindrical active rotor radial magnetized permanent magnet (16). A cylindrical active rotor axial end cap (27) is installed at the end of the cylindrical active rotor back iron (17) and the cylindrical active rotor cover (14). The cylindrical active rotor circumferential magnetized permanent magnet (15) and the cylindrical active rotor radial magnetized permanent magnet (16) are limited by a cylindrical active rotor fixing seat (24) in the axial direction of the parallel active shaft (19).

2. The synchronous magnetic drive device according to claim 1, characterized in that: The first disc rotor permanent magnet and the second disc rotor permanent magnet are both arranged in parallel and both adopt a disc circumferential magnetized permanent magnet (7) and a disc axial magnetized permanent magnet (8) arranged in a halbach array.

3. The synchronous magnetic drive device according to claim 1, characterized in that: The cylindrical driven rotor back iron (10) is provided with a first groove (101) for positioning the circumferentially magnetized permanent magnet (11) of the cylindrical driven rotor.

4. The synchronous magnetic drive device according to claim 2, characterized in that: The disc-type driven rotor back iron (20) is provided with a second groove (201) for positioning the disc-type circumferential magnetized permanent magnet (7).

5. The synchronous magnetic drive device according to claim 1, characterized in that: The disc-type active rotor mounting base (26) is connected to the active rotor bushing (18).

6. The synchronous magnetic drive device according to claim 1, characterized in that: The cylindrical driven rotor back iron (10), the cylindrical driven rotor cover (13), the cylindrical active rotor cover (14), the cylindrical active rotor back iron (17), and the active rotor bushing (18) are cylindrical and coaxial with the active shaft (19) and the driven shaft (30).

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