Synchronous magnetic transmission device

Abstract

The invention provides a synchronous magnetic transmission device. The synchronous magnetic transmission device comprises an outer shell, a disc-type driven rotor main body, a disc-type driving rotor main body, an isolation sleeve, a barrel-type driven rotor main body and a barrel-type driving rotor main body, an isolation sleeve is arranged in the outer shell; a disc-type driven rotor main body is arranged on the outer side of the end part of the isolation sleeve, a disc-type driving rotor main body is arranged on the inner side of the end part of the isolation sleeve, the disc-type driven rotor main body is connected with a driven shaft, and the disc-type driving rotor main body is connected with a driving shaft; a cylindrical driven rotor main body is arranged on the outer side of the peripheral side of the isolation sleeve, a cylindrical driving rotor main body is arranged on the inner side of the peripheral side of the isolation sleeve, the cylindrical driven rotor main body is connected with a driven shaft, and the cylindrical driving rotor main body is connected with a driving shaft. The disc type and barrel type composite rotor structure is adopted, the disc type rotor and the barrel type rotor are arranged at the same time to work cooperatively, an axial and radial double-channel transmission mechanism is formed, and the technical effect of efficient bidirectional magnetic coupling in a limited volume is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of electromechanical equipment, and in particular to a synchronous magnetic transmission device, and more particularly to a synchronous magnetic transmission device with high transmission power density. Background Art

[0002] As a fully sealed, leak-free power device, synchronous magnetic transmissions are widely used in highly polluting industries such as petrochemicals, metallurgy, electricity, and nuclear power. They effectively replace traditional rotary dynamic seals, completely resolving the problems of "emission, bubbling, dripping, and leakage" that plague traditional equipment. Utilizing magnetic coupling technology to transmit power, they are particularly suitable for conveying highly corrosive, flammable, explosive, precious, and toxic fluids, playing a crucial role in resolving industrial leakage issues. With the continuous expansion of industrial production, demand for synchronous magnetic transmissions is gradually shifting towards higher power applications, particularly in the field of high-torque transmission, where their importance is becoming increasingly prominent.

[0003] However, as the power of synchronous magnetic transmission devices increases, how to improve the ability to transmit torque within a limited space has become a bottleneck restricting its development. Traditional synchronous magnetic transmission devices mostly use radial or axial coupling to transmit torque, but due to structural design limitations, the installation layout of permanent magnets is relatively simple, usually relying only on a single radial or axial dimension to arrange permanent magnets. This design method leads to a waste of internal available space and cannot maximize the magnetic efficiency of permanent magnets within a limited space, thereby limiting the performance and transmission capacity of the device.

[0004] As synchronous magnetic transmission devices are gradually applied to the transmission of greater torque, their size gradually increases, and the problem of effective utilization of internal space becomes particularly prominent. Optimizing magnetic circuit design, reducing leakage magnetic loss and increasing torque transmission capacity per unit volume have become the key to improving device performance. How to effectively arrange permanent magnets in a compact space and use more sophisticated magnetic field design to improve the device's magnetic energy utilization and torque transmission efficiency has become a core challenge in the development of synchronous magnetic transmission technology. Summary of the Invention

[0005] In view of the defects in the prior art, an object of the present invention is to provide a synchronous magnetic transmission device.

[0006] According to the present invention, a synchronous magnetic transmission device is provided, comprising: an outer shell, a disc-type driven rotor body, a disc-type active rotor body, a spacer sleeve, a cylindrical driven rotor body, and a cylindrical active rotor body; An isolation sleeve is installed in the outer shell; A disc-type driven rotor body is provided on the outer side of the end of the isolation sleeve, and a disc-type active rotor body is provided 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 active rotor body is connected to the active shaft. A cylindrical driven rotor body is provided on the outer side of the isolation sleeve, and a cylindrical active 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 active rotor body is connected to the active shaft.

[0007] Preferably, the disc driven rotor body comprises: a disc driven rotor fixing seat, a disc driven rotor back iron, a driven rotor sleeve and a disc driven rotor shield; The driven rotor sleeve is installed on the driven shaft, the disc driven rotor back iron is connected to the driven rotor sleeve, the first disc rotor permanent magnet is installed on the disc driven rotor back iron, a disc driven rotor shield 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 on the end of the first disc rotor permanent magnet.

[0008] Preferably, the disc-type active rotor body comprises: a disc-type active rotor shield, a disc-type active rotor back iron and a disc-type active rotor fixing seat; The disc-type active rotor back iron is mounted on the driving shaft, and the second disc-type rotor permanent magnet is mounted on the disc-type active rotor back iron. A disc-type active rotor shield 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 limitation is provided on the end of the second disc-type rotor permanent magnet.

[0009] Preferably, the cylindrical driven rotor body comprises: 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 shield, a cylindrical driven rotor fixing seat and a cylindrical driven rotor axial end cover; The cylindrical driven rotor back iron is mounted on the driven rotor sleeve, and the cylindrical driven rotor circumferentially magnetized permanent magnets and the cylindrical driven rotor radially magnetized permanent magnets are arranged on the cylindrical driven rotor back iron in a Halbach array around the circumference of the driving shaft; A cylindrical driven rotor shield is provided on one side of the cylindrical driven rotor back iron for sealing the cylindrical driven rotor circumferentially magnetized permanent magnets and the cylindrical driven rotor radially magnetized permanent magnets. A cylindrical driven rotor axial end cover is installed at the ends of the cylindrical driven rotor back iron and the cylindrical driven rotor shield. The cylindrical driven rotor circumferentially magnetized permanent magnets and the cylindrical driven rotor radially magnetized permanent magnets are limited by a cylindrical driven rotor fixing seat along the axial direction parallel to the driving shaft.

[0010] Preferably, the cylindrical active rotor body comprises: a cylindrical active rotor shield, 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 sleeve, a cylindrical active rotor fixing seat and a cylindrical active rotor axial end cover; The active rotor sleeve is mounted on the circumferential side of the active shaft, the cylindrical active rotor back iron is connected to the active rotor sleeve, and the cylindrical active rotor circumferentially magnetized permanent magnets and the cylindrical active rotor radially magnetized permanent magnets are arranged on the cylindrical active rotor back iron in a Halbach array around the circumference of the active shaft; A cylindrical active rotor shield for sealing the cylindrical active rotor's circumferentially magnetized permanent magnets and radially magnetized permanent magnets is provided on one side of the cylindrical active rotor back iron. An axial end cover of the cylindrical active rotor is installed at the ends of the cylindrical active rotor back iron and the cylindrical active rotor shield. The cylindrical active rotor's circumferentially magnetized permanent magnets and radially magnetized permanent magnets are limited in position along the axial direction parallel to the driving shaft by a cylindrical active rotor fixing seat.

[0011] Preferably, the first disc rotor permanent magnet and the second disc rotor permanent magnet are both arranged in parallel and both adopt disc-type circumferential magnetization permanent magnets and disc-type axial magnetization permanent magnets staggered in a Halbach array.

[0012] Preferably, the cylindrical driven rotor back iron is provided with a first groove for positioning the circumferentially magnetized permanent magnets of the cylindrical driven rotor.

[0013] Preferably, the disc-type driven rotor back iron is provided with a second groove for positioning the disc-type circumferentially magnetized permanent magnet.

[0014] Preferably, the disc-type active rotor fixing seat is connected to the active rotor sleeve.

[0015] Preferably, the cylindrical driven rotor back iron, the cylindrical driven rotor shroud, the cylindrical active rotor shroud, the cylindrical active rotor back iron and the active rotor sleeve are cylindrical and coaxial with the driving shaft and the driven shaft.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present application adopts a disc-type and cylindrical composite rotor structure. By arranging the disc-type driven rotor body and the cylindrical driven rotor body simultaneously in the isolation sleeve, and making the disc-type active rotor body and the cylindrical active rotor body work together, an axial and radial dual-channel transmission mechanism is formed, thereby achieving the technical effect of realizing efficient bidirectional magnetic coupling within a limited volume. Compared with the existing technology that only uses a single axial or radial arrangement of magnetic devices and cannot simultaneously utilize space in two directions, the structure of the present application significantly improves the magnet arrangement density and coupling area, fundamentally solving the problems of low space utilization and low torque output per unit volume.

[0017] 2. The present application adopts Halbach array magnet design in the disc and cylinder rotor structures respectively. For example, the axially magnetized permanent magnets and axially magnetized permanent magnets installed on the back iron of the disc driven rotor form a three-dimensional staggered Halbach array, and the axially magnetized permanent magnets and radially magnetized permanent magnets embedded in the back iron of the cylinder active rotor are arranged in combination, achieving the technical effect of directional guidance of magnetic flux and enhancement of magnetic flux density on one side. Compared with the problems of magnetic circuit dispersion and large loss caused by disordered or simple magnetization methods in traditional magnetic transmission, the present application effectively improves the magnetic flux concentration through precise magnetic vector superposition, thereby greatly improving the magnetic coupling efficiency.

[0018] 3. This application achieves fully enclosed protection for the permanent magnet module by arranging sealing packaging components such as disc-type active rotor shields and cylindrical driven rotor shields on the structure, and fixing them to the rotor end cover and the fixing seat by welding. At the same time, combined with the non-magnetic material fixing structure, it achieves the technical effects of corrosion resistance, anti-falling and high-temperature humidity resistance. Compared with the existing magnetic devices that are susceptible to moisture, exposed magnets, and have a short life, 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 scenarios such as petrochemicals and deep sea. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings: Figure 1 Schematic diagram of the structure of a synchronous magnetic transmission device; Figure 2 It is a cross-sectional schematic diagram of a cylindrical master and slave rotor; Figure 3 Schematic diagram of the arrangement of disc and cylinder permanent magnets; Figure 4 This is a schematic diagram of the back iron structure of the cylindrical driven rotor; Figure 5 Schematic diagram of the disc driven rotor back iron structure; As shown in the figure: outer shell 1, disc driven rotor body 2, disc active rotor body 3, isolation sleeve 4, cylindrical driven rotor body 5, cylindrical active rotor body 6, disc circumferentially magnetized permanent magnet 7, disc axially magnetized permanent magnet 8, disc driven rotor fixing seat 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 shield 13, cylindrical active rotor shield 14, cylindrical active rotor circumferentially magnetized permanent magnet 15. Cylindrical active rotor radially magnetized permanent magnet 16, cylindrical active rotor back iron 17, active rotor bushing 18, active shaft 19, disc driven rotor back iron 20, second groove 201, driven rotor bushing 21, disc driven rotor shield 22, disc active rotor shield 23, cylindrical active rotor fixing seat 24, disc active rotor back iron 25, disc active rotor fixing seat 26, cylindrical active rotor axial end cover 27, cylindrical driven rotor fixing seat 28, cylindrical driven rotor axial end cover 29, driven shaft 30. DETAILED DESCRIPTION

[0020] The present invention will be described in detail below with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those skilled in the art, several changes and improvements can be made without departing from the scope of the present invention. These all fall within the scope of protection of the present invention.

[0021] Example 1 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, a spacer sleeve 4, a cylindrical driven rotor body 5, and a cylindrical driving rotor body 6. The spacer sleeve 4 is installed in 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 arranged outside the end of the spacer sleeve 4, and the disc-type driving rotor body 3 is arranged inside the end of the spacer 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 arranged outside the circumference of the spacer sleeve 4, and the cylindrical driving rotor body 6 is arranged inside the circumference of the spacer sleeve 4. The cylindrical driven rotor body 5 is connected to the driven shaft 30, and the interior of the cylindrical driving rotor body 6 is connected to the driving shaft 19.

[0022] The disc driven rotor body 2 includes: a disc driven rotor fixing seat 9, a disc driven rotor back iron 20, a driven rotor sleeve 21 and a disc driven rotor shield 22; the driven rotor sleeve 21 is mounted on the driven shaft 30, the disc driven rotor back iron 20 is connected to the driven rotor sleeve 21, the first disc rotor permanent magnet is mounted on the disc driven rotor back iron 20, and a disc driven rotor shield 22 for sealing the first disc rotor permanent magnet is welded to one side of the disc driven rotor back iron 20. The end of the first disc rotor permanent magnet is provided with a disc driven rotor fixing seat 9 for axial limitation. Figure 5 As shown, the disc-type driven rotor back iron 20 is provided with a second groove 201 for positioning the disc-type circumferentially magnetized permanent magnet 7 .

[0023] The disc-type active rotor body 3 includes a disc-type active rotor shield 23, a disc-type active rotor back iron 25, and a disc-type active rotor fixing seat 26. The disc-type active rotor back iron 25 is mounted on the drive shaft 19, and the second disc-type active rotor permanent magnet is mounted on the disc-type active rotor back iron 25. A disc-type active rotor shield 23 is provided on one side of the disc-type active rotor back iron 25 for sealing the second disc-type active magnet. A disc-type active rotor fixing seat 26 is provided at the end of the second disc-type active magnet for axial positioning. The disc-type active rotor fixing seat 26 is bolted to the active rotor sleeve 18. The disc-type active rotor shield 23 and the disc-type active rotor fixing seat 26 are welded together to achieve magnet encapsulation and rust prevention.

[0024] The cylindrical driven rotor body 5 comprises: 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 shield 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 sleeve 21, 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 driving shaft 19. On the rotor back iron 10; a cylindrical driven rotor shield 13 is provided on one side of the cylindrical driven rotor back iron 10 for sealing the cylindrical driven rotor circumferential magnetization permanent magnet 11 and the cylindrical driven rotor radial magnetization permanent magnet 12. The ends of the cylindrical driven rotor back iron 10 and the cylindrical driven rotor shield 13 are installed with a cylindrical driven rotor axial end cover 29. The cylindrical driven rotor circumferential magnetization permanent magnet 11 and the cylindrical driven rotor radial magnetization permanent magnet 12 are limited in the axial direction parallel to the driving shaft 19 by a cylindrical driven rotor fixing seat 28. Figure 4As shown, a first groove 101 for positioning the cylindrical driven rotor circumferentially magnetized permanent magnets 11 is provided on the cylindrical driven rotor back iron 10. The cylindrical driven rotor circumferentially magnetized permanent magnets 11 are connected to the cylindrical driven rotor radially magnetized permanent magnets 12 to achieve circumferential positioning of the cylindrical driven rotor radially magnetized permanent magnets 12. The cylindrical driven rotor axial end cover 29 is used to position the cylindrical driven rotor fixed seat 28 axially. The cylindrical driven rotor shield 13 is welded to the cylindrical driven rotor axial end cover 29 to wrap the cylindrical driven rotor circumferentially magnetized permanent magnets 11 and the cylindrical driven rotor radially magnetized permanent magnets 12, protecting the cylindrical driven rotor circumferentially magnetized permanent magnets 11 and the cylindrical driven rotor radially magnetized permanent magnets 12 from rust.

[0025] Combine Figure 2 As shown, the cylindrical active rotor body 6 includes: a cylindrical active rotor shield 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 sleeve 18, a cylindrical active rotor fixing seat 24 and a cylindrical active rotor axial end cover 27; the active rotor sleeve 18 is installed on the circumferential side of the active shaft 19, the cylindrical active rotor back iron 17 is connected to the active rotor sleeve 18, the cylindrical active rotor circumferentially magnetized permanent magnet 15 and the cylindrical active rotor radially magnetized permanent magnet 16 are arranged around the circumference of the active shaft 19 in an h The Albach array is arranged on the cylindrical active rotor back iron 17; a cylindrical active rotor shield 14 is provided on one side of the cylindrical active rotor back iron 17 for sealing the cylindrical active rotor circumferentially magnetized permanent magnets 15 and the cylindrical active rotor radially magnetized permanent magnets 16; a cylindrical active rotor axial end cover 27 is installed at the ends of the cylindrical active rotor back iron 17 and the cylindrical active rotor shield 14; the cylindrical active rotor circumferentially magnetized permanent magnets 15 and the cylindrical active rotor radially magnetized permanent magnets 16 are limited in position along the axial direction parallel to the driving shaft 19 by a cylindrical active rotor fixing seat 24. The circumferentially magnetized permanent magnets 15 of the cylindrical active rotor are embedded in the grooves of the cylindrical active rotor back iron 17. New grooves are formed between the circumferentially magnetized permanent magnets 15 of the cylindrical active rotor to accommodate the radially magnetized permanent magnets 16 of the cylindrical active rotor, thereby achieving circumferential positioning of the radially magnetized permanent magnets 16 of the cylindrical active rotor. Other rotor back irons in this embodiment can also adopt 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 shield 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 of the cylindrical active rotor and the radially magnetized permanent magnets 16 of the cylindrical active rotor are installed in the cylindrical active rotor back iron 17 in a Halbach manner and are sealed and positioned by a fixing structure made of non-magnetic conductive material.

[0026] Combine Figure 3As shown, in one embodiment, the first disc rotor permanent magnet and the second disc rotor permanent magnet are both arranged in parallel and both use disc-type circumferentially magnetized permanent magnets 7 and disc-type axially magnetized permanent magnets 8 arranged in a concentric ring-shaped Halbach array. The disc rotor uses disc-type circumferentially magnetized permanent magnets 7 and disc-type axially magnetized permanent magnets 8 in a Halbach array arranged in a circumferential and axial staggered manner to achieve unilateral magnetic flux enhancement. The cylindrical rotor uses cylindrical driven rotor circumferentially magnetized permanent magnets 11, cylindrical driven rotor radially magnetized permanent magnets 12, cylindrical active rotor circumferentially magnetized permanent magnets 15, and cylindrical active rotor radially magnetized permanent magnets 16 arranged in a Halbach array along the cylindrical surface. The magnetic flux directionality is improved by superposition of magnetic vectors, achieving a higher coupling magnetic field strength with the same magnet dosage.

[0027] In one embodiment, the driven rotor sleeve 21 is connected to the driven shaft 30 by a key connection, and the disc-type active rotor fixing seat 26 is connected to the active shaft 19 through the active rotor sleeve 18, thereby achieving high-precision and high-strength transmission connection.

[0028] In one embodiment, the cylindrical driven rotor back iron 10 , the cylindrical driven rotor shroud 13 , the cylindrical driving rotor shroud 14 , the cylindrical driving rotor back iron 17 and the driving rotor sleeve 18 are cylindrical and coaxial with the driving shaft 19 and the driven shaft 30 .

[0029] Working principle: The active shaft 19 rotates under external drive, driving the active rotor sleeve 18 to rotate synchronously. The active rotor sleeve 18 is connected to the cylindrical active rotor back iron 17. The cylindrical active rotor back iron 17 is embedded with the cylindrical active rotor circumferential magnetization permanent magnet 15 and the cylindrical active rotor radial magnetization permanent magnet 16. The two are arranged in a Halbach manner to form a directional magnetic field. The cylindrical active rotor shield 14 is welded to the disc type active rotor fixing seat 26 and the cylindrical active rotor axial end cover 27 to encapsulate the above permanent magnet structure and provide protection. The disc type active rotor fixing seat 26 is also connected to the disc active rotor back iron 25. The disc active rotor back iron 25 is provided with a groove for embedding the disc type circumferential magnetization permanent magnet 7 and the disc type axial magnetization permanent magnet 8. The two are staggered to form a disc Halbach magnetic array, which further improves the magnetic flux density and coupling strength. The disc-type active rotor shield 23 encapsulates the permanent magnets and protects their surface from corrosion. When the driving shaft 19 rotates, the magnetic field acts on the driven end through the bidirectional magnetic coupling field created 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 the changes in magnetic force. The disc-type driven rotor body 2 is connected to the driven shaft 30 by the driven rotor sleeve 21. The driven rotor sleeve 21 mounts the disc-type driven rotor back iron 20. The disc-type driven rotor back iron 20 has a second groove 201 for securing the disc-type circumferentially magnetized permanent magnets 7 and the disc-type axially magnetized permanent magnets 8. The back iron is welded and sealed to the disc-type driven rotor shield 22 to protect the permanent magnets from corrosion. The cylindrical driven rotor body 5 is screwed to the driven rotor sleeve 21 via the cylindrical driven rotor back iron 10. The cylindrical driven rotor back iron 10 is provided with a first groove 101 for positioning the cylindrical driven rotor's circumferentially magnetized permanent magnets 11. The cylindrical driven rotor's circumferentially magnetized permanent magnets 11 and the cylindrical driven rotor's radially magnetized permanent magnets 12 form a composite Halbach array, enhancing the radial magnetic field concentration effect. Both are mounted on the cylindrical driven rotor back iron 10. Axial positioning is achieved via the cylindrical driven rotor axial end cap 29 and the cylindrical driven rotor mounting base 28. The cylindrical driven rotor shield 13 is welded to the surface of the cylindrical driven rotor axial end cap 29, achieving overall packaging. The isolation sleeve 4 completely isolates the above-mentioned active and driven rotor systems and is installed inside the outer shell 1 to form a closed structure, so that the disc and barrel rotor systems form a dual-coupled transmission path, realizing efficient magnetic drive in both axial and radial dimensions, thereby effectively improving the unit volume torque output within a limited volume. The Halbach array permanent magnet arrangement forms a unilateral magnetic flux enhancement, improves the magnetic field utilization and reduces leakage magnetic flux, and cooperates with the fixed structure of non-magnetic material to eliminate magnetic field interference, further improving the stability and environmental adaptability of the transmission system.

[0030] Example 2 Example 2 is a preferred example of Example 1.

[0031] This embodiment optimizes magnetic force transmission and space utilization efficiency by adopting a high-efficiency Halbach array magnet design, and can achieve higher torque output within a limited volume. Through the composite structure of disc and barrel rotors, the axial and radial spaces are fully utilized, and the magnetic energy transmission capacity per unit volume is improved while ensuring transmission stability.

[0032] like Figure 1-5 As shown, this embodiment includes: an outer shell 1, an isolation sleeve 4 is provided 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, a disc-type active rotor body 3 is provided at one end of the disc-type driven rotor body 2, a cylindrical driven rotor body 5 is provided on the outer side of the circumference of the isolation sleeve 4, a cylindrical active rotor body 6 is provided inside the cylindrical driven rotor body 5, and a driving shaft 19 is provided inside the cylindrical active rotor body 6; the isolation sleeve 4 is installed on the outer shell 1 to realize contactless coupling transmission between the active rotor (disk-type active rotor body 3, cylindrical active rotor body 6) and the driven rotor (disk-type driven rotor body 2, cylindrical driven rotor body 5), and the driving shaft 19 is connected to the active rotor. Then, the driven shaft 30 is connected to the driven rotor, and efficient torque transmission is achieved through the permanent magnets arranged in a Halbach magnetization pattern. The disc-type driven rotor body 2 includes a driven rotor sleeve 21, a disc-type driven rotor back iron 20 and a disc-type driven rotor shield 22. A disc-type axially magnetized permanent magnet 8 is installed on the outer side of the disc-type driven rotor back iron 20. A second groove 201 is provided on the disc-type driven rotor back iron 20. A disc-type circumferentially magnetized permanent magnet 7 is provided on one side of the disc-type axially magnetized permanent magnet 8. The disc-type circumferentially magnetized permanent magnet 7 and the disc-type axially magnetized permanent magnet 8 are installed in the second groove 201 of the disc-type driven rotor back iron 20 in a Halbach array manner and are welded and sealed by the disc-type driven rotor shield 22.

[0033] The disc active rotor body 3 includes: a disc active rotor fixing seat 26 and a disc active rotor back iron 25. The disc active rotor back iron 25 is connected to the disc active rotor circumferentially magnetized permanent magnet 7. The outer side of the disc active rotor body 3 is connected to the disc active rotor shield 23. The disc active rotor back iron 25 is provided with grooves for positioning the disc circumferentially magnetized permanent magnet 7 and the disc axially magnetized permanent magnet 8. The disc active rotor shield 23 is welded to the disc active rotor fixing seat 26 to achieve magnet packaging and rust prevention functions. The disc-type active rotor body 3 optimizes the distribution of magnetic lines of force by combining the disc-type active rotor back iron 25, the disc-type circumferentially magnetized permanent magnet 7, and the disc-type axially magnetized permanent magnet 8, and utilizes the Halbach array magnet arrangement, thereby effectively enhancing the magnetic field strength in the magnetic coupling area. This design not only improves the directionality of the magnetic field, but also reduces magnetic leakage, so that the efficiency of the magnet is fully utilized. In addition, the welded packaging of the disc-type active rotor shield 23 and the disc-type active rotor fixing seat 26 not only protects the permanent magnet from external corrosion, but also ensures the stability of the magnet during the transmission process.

[0034] 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 shield 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 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 connected. The cylindrical driven rotor is installed on the back iron 10 and connected to it. The cylindrical driven rotor circumferentially magnetized permanent magnet 11 is embedded in the first groove 101 of the cylindrical driven rotor back iron 10 to achieve circumferential positioning. The cylindrical driven rotor circumferentially magnetized permanent magnet 11 is connected to the cylindrical driven rotor radially magnetized permanent magnet 12 to achieve circumferential positioning of the cylindrical driven rotor radially magnetized permanent magnet 12. The cylindrical driven rotor is axially positioned by the cylindrical driven rotor fixing seat 28 and the cylindrical driven rotor axial end cover 29. The cylindrical driven rotor shield 13 is welded to the cylindrical driven rotor axial end cover 29 to encapsulate the cylindrical driven rotor circumferentially magnetized permanent magnet 11 and the cylindrical driven rotor radially magnetized permanent magnet 12, protecting the permanent magnets from corrosion. The cylindrical driven rotor body 5 further enhances the coupling effect of the radial and axial magnetic fields through the combination of the cylindrical driven rotor back iron 10, the cylindrical driven rotor circumferentially magnetized permanent magnets 11, and the cylindrical driven rotor radially magnetized permanent magnets 12. The first groove 101 in the cylindrical driven rotor back iron 10 and the cylindrical driven rotor circumferentially magnetized permanent magnets 11 work together to achieve precise positioning of the magnets, reduce magnetic field losses, and improve coupling efficiency. The cylindrical driven rotor shield 13 not only protects the permanent magnets from external damage, but also ensures their stable operation, thereby improving 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.

[0035] The cylindrical active rotor body 6 includes: a cylindrical active rotor back iron 17, a cylindrical active rotor circumferential magnetized permanent magnet 15, a cylindrical active rotor radial magnetized permanent magnet 16, a cylindrical active rotor shield 14, an active rotor sleeve 18, a cylindrical active rotor fixing seat 24 and a cylindrical active rotor axial end cover 27. The cylindrical active rotor circumferential magnetized permanent magnet 15 is embedded in the groove of the cylindrical active rotor back iron 17. The cylindrical active rotor circumferential magnetized permanent magnet 15 is further formed between the cylindrical active rotor circumferential magnetized permanent magnet 15 to accommodate the cylindrical active rotor radial magnetized permanent magnet 16. 6. The circumferential positioning of the radially magnetized permanent magnets 16 of the cylindrical active rotor is achieved. 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 shield 14 is welded to the cylindrical active rotor fixing seat 24 and the cylindrical active rotor axial end cover 27. The cylindrical active rotor circumferentially magnetized permanent magnets 15 and the cylindrical active rotor radially magnetized permanent magnets 16 are installed into the cylindrical active rotor back iron 17 in a Halbach manner and are sealed and positioned through a fixed structure of non-magnetic conductive 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 circumferentially magnetized permanent magnets 15, and the cylindrical active rotor radially magnetized permanent magnets 16, the concentration and directionality of the magnetic force are further enhanced, ensuring the effective transmission of the magnetic flux. The cylindrical active rotor circumferentially magnetized permanent magnets 15 and the cylindrical active rotor radially magnetized permanent magnets 16 are arranged in a Halbach manner, which not only reduces magnetic leakage but also improves the magnetic flux intensity, making the magnetic force transmission more efficient. The cylindrical active rotor fixing seat 24 and the cylindrical active rotor axial end cover 27 ensure the axial stability of the active rotor assembly. The cylindrical active rotor shield 14 provides further protection and enhances the environmental resistance and corrosion resistance of the device. The use of non-magnetic conductive materials avoids interference with the magnetic field, making the magnetic force transmission more stable and reducing unnecessary energy loss.

[0036] The disc rotor uses a Halbach array of disc-type circumferentially magnetized permanent magnets 7 and disc-type axially magnetized permanent magnets 8 arranged in an alternating circumferential and axial manner to achieve single-sided magnetic flux enhancement. The tubular rotor uses a Halbach array of tubular driven rotor circumferentially magnetized permanent magnets 11, tubular driven rotor radially magnetized permanent magnets 12, tubular active rotor circumferentially magnetized permanent magnets 15, and tubular active rotor radially magnetized permanent magnets 16 arranged along the cylindrical surface. Magnetic vector superposition improves magnetic flux directionality, achieving a higher coupling magnetic field strength with the same magnet dosage. This further improves the efficiency and stability of magnetic force transmission. This design effectively reduces magnetic field leakage, makes magnetic coupling tighter, and enhances torque output capability.

[0037] The driven rotor bushing 21 is connected to the driven shaft 30 by a key connection, and the disc-type active rotor fixing seat 26 is connected to the active shaft 19 through the active rotor bushing 18, forming a high-precision, high-strength transmission connection, ensuring stability and reliability during the magnetic force transmission process. During the transmission process, the disc and cylinder rotors transmit torque through precise magnetic coupling, and the magnetic lines of force are concentrated and efficient, greatly improving the overall efficiency and output capacity of the device.

[0038] In order to ensure long-term stable operation in harsh working environments, the cylindrical driven rotor shield 13, the cylindrical active rotor shield 14, the disc driven rotor shield 22 and the disc active rotor shield 23 are all connected to the shaft sleeve or the fixed seat using a welding structure to form a sealing structure. This sealing structure effectively prevents corrosion of the permanent magnet and ensures the long-term stability of the magnet in high temperature, high humidity, corrosive and other environments.

[0039] The disc-type driven rotor body 2 utilizes a sealed design featuring a disc-type driven rotor back iron 20 and a disc-type driven rotor shield 22, combined with the staggered arrangement of disc-type axially magnetized permanent magnets 8 and disc-type circumferentially magnetized permanent magnets 7. This significantly enhances the directionality and strength of the magnetic field, ensuring effective concentration of magnetic lines of force and improving the utilization rate of the permanent magnets. The layout between the cylindrical driven rotor body 5 and the cylindrical active rotor body 6 further improves transmission efficiency. The structural design of the cylindrical driven rotor back iron 10 and the cylindrical active rotor back iron 17 reduces magnetic leakage losses, further optimizing the concentration and transmission of the magnetic field. The isolation sleeve 4 effectively isolates the active rotor from the driven rotor, achieving contactless transmission and avoiding friction losses associated with conventional sealing devices. Efficient torque transmission is achieved through magnetic coupling between the active shaft 19 and the driven shaft 30. Furthermore, all permanent magnets are sealed and encapsulated by the rotor shield, protecting them from the external environment and enhancing the durability and adaptability of the device.

[0040] In the description of this application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and 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, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0041] The above describes specific embodiments of the present invention. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art may make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. The embodiments of this application and the features in the embodiments may be combined with each other in any manner unless there is a conflict.

Claims

1. A synchronous magnetic transmission device, characterized in that: include: An outer shell (1), a disc-type driven rotor body (2), a disc-type active rotor body (3), an isolation sleeve (4), a cylindrical driven rotor body (5), and a cylindrical active rotor body (6); An isolation sleeve (4) is installed in the outer shell (1); A disc-type driven rotor body (2) is provided on the outside of the end of the isolation sleeve (4), and a disc-type active rotor body (3) is provided on the inside 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 circumference of the isolation sleeve (4), and a cylindrical active rotor body (6) is provided on the inner side of the circumference 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).

2. The synchronous magnetic transmission device according to claim 1, characterized in that: The disc driven rotor body (2) comprises: a disc driven rotor fixing seat (9), a disc driven rotor back iron (20), a driven rotor shaft sleeve (21), and a disc driven rotor shield (22); The driven rotor sleeve (21) is mounted on the driven shaft (30), the disc driven rotor back iron (20) is connected to the driven rotor sleeve (21), a first disc rotor permanent magnet is mounted on the disc driven rotor back iron (20), a disc driven rotor shield (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.

3. The synchronous magnetic transmission device according to claim 2, characterized in that: The disc-type active rotor body (3) comprises: a disc-type active rotor shield (23), a disc-type active rotor back iron (25), and a disc-type active rotor fixing seat (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 shield (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 fixing seat (26) for axial limiting is provided at the end of the second disc-type rotor permanent magnet.

4. The synchronous magnetic transmission device according to claim 3, characterized in that: The cylindrical driven rotor body (5) comprises: 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 shield (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 sleeve (21), and the cylindrical driven rotor circumferentially magnetized permanent magnets (11) and the cylindrical driven rotor radially magnetized permanent magnets (12) are arranged on the cylindrical driven rotor back iron (10) in a Halbach array around the driving shaft (19). A cylindrical driven rotor shield (13) for sealing the cylindrical driven rotor circumferentially magnetized permanent magnets (11) and the cylindrical driven rotor radially magnetized permanent magnets (12) is provided on one side of the cylindrical driven rotor back iron (10). A cylindrical driven rotor axial end cover (29) is installed at the ends of the cylindrical driven rotor back iron (10) and the cylindrical driven rotor shield (13). The cylindrical driven rotor circumferentially magnetized permanent magnets (11) and the cylindrical driven rotor radially magnetized permanent magnets (12) are limited by a cylindrical driven rotor fixing seat (28) along the axial direction parallel to the driving shaft (19).

5. The synchronous magnetic transmission device according to claim 4, characterized in that: The cylindrical active rotor body (6) comprises: a cylindrical active rotor shield (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 sleeve (18), a cylindrical active rotor fixing seat (24), and a cylindrical active rotor axial end cover (27); The active rotor sleeve (18) is mounted on the circumferential side of the active shaft (19), the cylindrical active rotor back iron (17) is connected to the active rotor sleeve (18), and the cylindrical active rotor circumferentially magnetized permanent magnets (15) and the cylindrical active rotor radially magnetized permanent magnets (16) are arranged on the cylindrical active rotor back iron (17) in a Halbach array around the circumference of the active shaft (19); A cylindrical active rotor shield (14) for sealing the cylindrical active rotor circumferentially magnetized permanent magnets (15) and the cylindrical active rotor radially magnetized permanent magnets (16) is provided on one side of the cylindrical active rotor back iron (17). A cylindrical active rotor axial end cover (27) is installed at the ends of the cylindrical active rotor back iron (17) and the cylindrical active rotor shield (14). The cylindrical active rotor circumferentially magnetized permanent magnets (15) and the cylindrical active rotor radially magnetized permanent magnets (16) are limited in position by a cylindrical active rotor fixing seat (24) along the axial direction parallel to the driving shaft (19).

6. The synchronous magnetic transmission device according to claim 3, characterized in that: The first disc rotor permanent magnet and the second disc rotor permanent magnet are both arranged in parallel and both use disc-type circumferential magnetization permanent magnets (7) and disc-type axial magnetization permanent magnets (8) that are staggered in a Halbach array.

7. The synchronous magnetic transmission device according to claim 4, characterized in that: The cylindrical driven rotor back iron (10) is provided with a first groove (101) for positioning the cylindrical driven rotor circumferentially magnetized permanent magnet (11).

8. The synchronous magnetic transmission device according to claim 6, characterized in that: The disc-type driven rotor back iron (20) is provided with a second groove (201) for positioning the disc-type circumferentially magnetized permanent magnet (7).

9. The synchronous magnetic transmission device according to claim 5, characterized in that: The disc-type active rotor fixing seat (26) is connected to the active rotor shaft sleeve (18).

10. The synchronous magnetic transmission device according to claim 5, characterized in that: The cylindrical driven rotor back iron (10), the cylindrical driven rotor shield (13), the cylindrical active rotor shield (14), the cylindrical active rotor back iron (17), and the active rotor sleeve (18) are arranged in a cylindrical shape and are coaxial with the active shaft (19) and the driven shaft (30).

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