阅读说明：本技术 一种应用聚磁型调磁装置的盘式磁力齿轮 (Disc type magnetic gear applying magnetism gathering type magnetism adjusting device ) 是由 杨超君 朱莉 彭志卓 邰蒋西 高洋 杨凡 王凯 于 2019-10-31 设计创作，主要内容包括：本发明涉及机械工程中的传动技术领域,具体是一种应用聚磁型调磁装置的盘式磁力齿轮。其由主动盘总成、从动盘总成和聚磁型调磁装置总成组成,其特征在于：聚磁型调磁装置的调磁块采用侧边1/2周期正弦以及近似等腰梯形截面的结构,结合配合安装的机械结构,增强磁力齿轮的可靠性。根据调磁块基体材料不同,可选择不同的连接方式。为防止端部漏磁,增加了横向软磁材料,调磁装置同时实现调磁与聚磁效果,改善调磁性能,提高聚磁能力。主动盘与从动盘的永磁体均采用90°Halbach排布或紧密排布等磁能密度较高的排布方式。本发明通过对调磁装置结构与永磁体排布的设计,增强了磁力齿轮的转矩密度,使其广泛应用于高转矩的工作环境。(The invention relates to the technical field of transmission in mechanical engineering, in particular to a disc type magnetic gear applying a magnetism-gathering type magnetism regulating device. It comprises drive plate assembly, driven plate assembly and magnetism gathering type magnetism adjusting device assembly, its characterized in that: the magnetic regulating block of the magnetic concentration type magnetic regulating device adopts a structure with 1/2 periodic sine sides and an approximate isosceles trapezoid cross section, and the reliability of the magnetic gear is enhanced by combining a mechanical structure installed in a matching way. Different connection modes can be selected according to different materials of the magnetic regulating block substrate. In order to prevent end magnetic leakage, a transverse soft magnetic material is added, the magnetic adjusting device simultaneously realizes the magnetic adjusting and gathering effects, the magnetic adjusting performance is improved, and the magnetic gathering capacity is improved. The permanent magnets of the driving disc and the driven disc are arranged in a 90-degree Halbach arrangement mode or a close arrangement mode and the like with higher magnetic energy density. The invention enhances the torque density of the magnetic gear by the design of the structure of the magnetic adjusting device and the arrangement of the permanent magnets, so that the magnetic gear is widely applied to the high-torque working environment.)

1. A disc magnetic gear applying a magnetism gathering type magnetism regulating device comprises a driving disc assembly and a driven disc assembly, wherein the driven disc assembly comprises a driven shaft, a driven shaft sleeve, a driven disc base body, a driven disc permanent magnet and a screw; the driving disc assembly comprises a driving shaft, a driving shaft sleeve, a driving disc base body, a driving disc permanent magnet and screws, the right end of the driving shaft is in key connection with the driving shaft sleeve, the right side of the driving disc sleeve is connected with the driving disc base body through the screws, the driving disc permanent magnet is closely arranged and mounted on the driving disc base body in a face-to-face mode.

2. The disc type magnetic gear applying the magnetism-gathering type magnetism regulating device as claimed in claim 1, wherein the magnetism regulating block bracket adopts a semi-closed form, which has an isolation effect on magnetic induction lines and reduces magnetic leakage; the axial soft magnetic material part of the magnetic adjusting block realizes the effect of magnetic field modulation by concentrating magnetic induction lines to form a magnetic adjusting part; enabling a side 1/2 periodic sinusoidal curve of the magnetic adjusting block to coincide with a side 1/2 periodic outward convex sinusoidal curve of a clamping groove of a magnetic adjusting block tray, enabling the magnetic adjusting block to be installed in a matched mode with the magnetic adjusting block tray, and enabling a magnetic adjusting block support to be connected with the magnetic adjusting block tray to surround and completely fix the magnetic adjusting block; the magnetic regulating block is made of silicon steel sheets or ferrite soft magnetic materials through a sheet stacking or casting process.

3. The disc type magnetic gear applying the magnetism gathering type magnetism regulating device as claimed in claim 2, wherein the thickness of the magnetism regulating part of the magnetism regulating block is h_tThe thickness of the magnetic adjusting block tray is the same as that of the magnetic adjusting block tray, the expression of a sine curve with the side edge of 1/2 cycles is y-Asin omega x, and the side edge of the tooth slot of the magnetic adjusting block tray adopts a sine curve with 1/2 cycles matched with the side edge of the magnetic adjusting block.

4. A disc magnetic gear applying a magnetism gathering type magnetism regulating device comprises a driving disc assembly and a driven disc assembly, wherein the driven disc assembly comprises a driven shaft, a driven shaft sleeve, a driven disc base body, a driven disc permanent magnet and a screw; the driving disc assembly comprises a driving shaft, a driving shaft sleeve, a driving disc base body, a driving disc permanent magnet and screws, the right end of the driving shaft is in key connection with the driving shaft sleeve, the right side of the driving disc sleeve is connected with the driving disc base body through the screws, the driving disc permanent magnet is closely arranged and is mounted on the driving disc base body in a face-to-face mode.

5. The disc magnetic gear using the magnetism gathering type magnetic adjusting device as claimed in claim 4, wherein the magnetic field modulating effect is achieved by concentrating magnetic induction lines in an axial soft magnetic material portion of a magnetic adjusting block in the magnetic adjusting device, magnetic leakage at the end portion of a permanent magnet is effectively weakened by concentrating the magnetic induction lines in a transverse soft magnetic material portion added to the magnetic adjusting block, the magnetism gathering type magnetic adjusting block is formed, and the purpose of magnetic field modulation and gear torque density enhancement is achieved at the same time, the axial portion of the magnetic adjusting block is a magnetic adjusting portion, the transverse portion is a magnetic gathering portion, the side edge of the magnetic adjusting portion is a 1/2-period sine curve, the magnetic adjusting effect is improved, the magnetism gathering portion adopts an approximate isosceles trapezoid cross section structure, the difference from the isosceles trapezoid is that the upper and lower bottom edges are circular arcs, the side edge of the magnetism gathering portion is made into an approximate isosceles trapezoid, the lower bottom angle is α, the contact area between the magnetic adjusting block and a magnetic adjusting block bracket is increased, a magnetic adjusting block tray tooth grooves are installed with the magnetic adjusting block, the magnetic adjusting block bracket is installed with the tooth grooves, the magnetic adjusting block is made of the magnetic adjusting block, the magnetic block is made of an approximate isosceles trapezoid, the magnetic adjusting bracket is installed with a magnetic block groove, the magnetic adjusting bracket, the magnetic block is made of the magnetic adjusting block, the magnetic block is.

6. A disk type magnetic gear using a magnetism collecting type magnetism adjusting device, as defined in claim 5, wherein the thickness of the magnetism adjusting portion of the magnetism adjusting block is h_tThe thickness of the magnetic adjusting block tray is the same as that of the magnetic adjusting block tray, the expression of a sine curve with the side edge of 1/2 cycles is y-Asin omega x, and the side edge of the tooth socket of the magnetic adjusting block tray adopts a sine curve with 1/2 cycles matched with the side edge of the magnetic adjusting block; when the length of the magnetism gathering part is L, the thicknesses of the permanent magnets of the driving disc and the driven disc are both h, and the thicknesses of the matrix of the driving disc and the matrix of the driven disc are both h_feThe thickness of the magnetic block adjusting tray is h_tTaking the strength of the magnetic adjusting block into consideration, taking L to be more than or equal to 2 (h)_fe+h)+h_tAnd the lower base angles of the approximate isosceles trapezoid of the side section of the clamping groove of the magnetic adjusting block bracket and the approximate isosceles trapezoid of the section of the magnetic adjusting block magnetic gathering part are both α degrees between 60 degrees and 75 degrees.

7. The disc type magnetic gear applying the magnetism gathering and regulating device as claimed in claim 1 or 4, wherein the permanent magnets on the driving disc base body and the driven disc base body are closely arranged in a 90-degree Halbach form, and the magnetic field intensity of the working air gap of the magnetic gear is enhanced by using the single-side magnetism gathering characteristic of the Halbach array.

8. A disk type magnetic gear using magnetism-gathering type magnetism-adjusting device as claimed in claim 1 or 4Characterized in that the number of the magnetic blocks is n_s，n_sEqual to the number of pole pairs P of the driving disk₁Number of pole pairs P with driven plate₂And (4) summing.

9. The disc type magnetic gear applying the magnetism gathering type magnetism regulating device as claimed in claim 1, wherein the base body of the magnetism regulating device comprises a magnetism regulating block tray and a magnetism regulating block bracket, the base body material is epoxy resin, nylon material or austenitic stainless steel non-magnetic-conductive material, and the magnetism regulating block bracket and the magnetism regulating block tray are connected through a countersunk rivet connection or a welding method.

10. The disc type magnetic gear applying the magnetism gathering type magnetism regulating device as claimed in claim 4, wherein the base body of the magnetism regulating device comprises a magnetism regulating block tray, a magnetism regulating block bracket and an end cover, the base body material is epoxy resin, nylon material or austenitic stainless steel non-magnetic conductive material, and the magnetism regulating block bracket, the magnetism regulating block tray and the end cover are connected through a countersunk rivet connection or a welding method.

Technical Field

The invention relates to the technical field of transmission in mechanical engineering, in particular to a magnetic gear in non-contact connection, and specifically relates to a disc type magnetic gear applying a magnetism-gathering type magnetism regulating device. It can be used in non-contact speed-changing system with high torque and high and low speed transmission.

Background

In industrial production, mechanical gears are widely applied to various transmission systems due to the advantages of fixed transmission ratio, wide applicable speed and load range, long service life and the like, but the mechanical gears have large vibration and noise in the transmission process, the gears are seriously contacted and abraded with each other, and the mechanical gears do not have overload protection effect, so that the defects can reduce the transmission performance of the mechanical gears and limit the use of the mechanical gears in certain specific working environments. With the development of modern technology and the improvement of performance of permanent magnetic materials, many scholars propose a solution of using a magnetic gear structure to replace a traditional mechanical gear.

The magnetic gear achieves the purpose of transmission by the attraction and the repulsion of magnetic coupling force, realizes the non-contact transmission of force and torque by the magnetic field coupling action in an air gap, and has the advantages of non-contact transmission, overload protection action and high transmission efficiency compared with the traditional mechanical gear. The high-performance magnetic gear introduces the magnetic pole piece, the permanent magnets in the inner rotor and the outer rotor generate harmonic magnetic fields with the same number as the magnetic poles of the rotor permanent magnets in pairs in the inner air gap and the outer air gap under the modulation action of the magnetic pole piece, the utilization rate of the permanent magnets is improved, and therefore the transmission efficiency of the magnetic gear is greatly increased.

The patent 201710461909.0 of the invention of Jiangsu university discloses an air gap adjustable magnetic gear using a side sine magnetic adjusting device, wherein a side sine structure of a magnetic adjusting block is applied to a cylindrical magnetic gear, a 1/2-period sine curve applied to the magnetic adjusting block is changed in the axial direction, and the modulation effect of a 1/2-period sine curve is different in the air gap adjusting process. The end part of the permanent magnet is not in a magnetism gathering mode, more magnetic leakage can be generated, and the high-torque-density transmission of the magnetic gear is not realized by changing the arrangement mode of the permanent magnet.

IEEE TRANSACTIONS ON MAGNETICS, VOL.51, NO.11, A noveltaMagnetic Gear of NOVEMBER 2015: Toward a high magnetic Torque Density discloses a theoretical model of a high-Density magnetic Gear capable of axially and transversely gathering magnetism, wherein the axial magnetism gathering part is a fan ring with a certain thickness, the cross section of the transverse magnetism gathering part is also a fan ring, the transverse magnetism gathering part is easy to be sucked out by axial force between permanent magnetic discs or thrown out of the magnetic Gear by huge centrifugal force in the working process, and a specific material selection and forming method of a magnetic adjusting block and a specific structure for supporting the magnetic adjusting block are not indicated.

Disclosure of Invention

The invention provides a disc type magnetic gear applying a magnetism-gathering type magnetism-adjusting device, aiming at overcoming the defects that the magnetic energy of a permanent magnet is not fully utilized, the structure of a magnetism-adjusting block cannot meet the working requirement, the magnetic leakage of the magnetic gear and the like in the application of the existing magnetic gear, a magnetism-gathering part made of soft magnetic materials is additionally arranged at the end part of the permanent magnet, the side edge of the magnetism-adjusting part of the magnetism-adjusting block adopts 1/2-period sine curves, the magnetism-gathering part adopts an approximate isosceles trapezoid cross section, and the arrangement mode of the permanent magnet with high magnetic energy density is combined.

A disk magnetic gear applying a magnetism gathering type magnetism regulating device comprises a driving disk assembly, a driven disk assembly and a magnetism regulating device assembly, wherein the magnetism regulating device assembly is arranged between the driving disk assembly and the driven disk assembly, the magnetism regulating device assembly comprises a magnetism regulating block, a magnetism regulating block tray, a magnetism regulating block support and an end cover, the magnetism regulating block is installed by matching the magnetism regulating block tray and the magnetism regulating block support, the end cover is connected with the magnetism regulating block tray through a rivet to completely fix the magnetism regulating block, the driven disk assembly comprises a driven shaft, a driven shaft sleeve, a driven disk base body, a driven disk permanent magnet and a screw, the left end of the driven shaft is connected with the driven shaft sleeve through a key, the left side of the driven disk sleeve is connected with the driven disk base body through the screw, the driven disk permanent magnet is closely arranged on the driven disk base body and is installed in a face-to-face mode, the driving disk assembly comprises a driving shaft, a driving shaft sleeve, a driving disk base body, the installation method is the same as that of the driven disc.

The number of the magnetic adjusting blocks is n_s，n_sEqual to the number of pole pairs P of the driving disk₁Number of pole pairs P with driven plate₂And (4) summing.

The axial soft magnetic material part of the magnetic adjusting block in the magnetic adjusting device realizes the magnetic field modulation effect through concentrating the magnetic induction lines, the transverse soft magnetic material part added by the magnetic adjusting block effectively weakens the magnetic leakage at the end part of the permanent magnet through concentrating the magnetic induction lines to form a magnetic gathering type magnetic adjusting block, and simultaneously, the purposes of magnetic field modulation and gear torque density enhancement are achieved. The axial part of the magnetic adjusting block is a magnetic adjusting part, and the transverse part of the magnetic adjusting block is a magnetic gathering part. The side of the magnetic adjusting part is 1/2 periodic sine curves, the magnetic adjusting effect is improved, and the magnetic adjusting device is matched with a magnetic adjusting block tray, a bracket and the like in installation by combining an approximate isosceles trapezoid cross section structure of the magnetic gathering part, so that the reliability of the magnetic adjusting device is enhanced.

The invention also includes: the thickness of the magnetic regulating part of the magnetic regulating block is h_tThe thickness of the magnetic adjusting block tray is the same as that of the magnetic adjusting block tray, the expression of a sine curve with the side edge of 1/2 cycles is y-Asin omega x, and the side edge of the tooth slot of the magnetic adjusting block tray adopts a sine curve with 1/2 cycles matched with the side edge of the magnetic adjusting block. And a magnetic gathering part of the disk gear magnetic adjusting block is added, and the length of the magnetic gathering part is 0 or L. The length of the magnetism gathering part is 0, and the magnetism regulating device only has a magnetism regulating part. When the length of the magnetism gathering part is L, the thicknesses of the permanent magnets of the driving disc and the driven disc are both h, and the thicknesses of the matrix of the driving disc and the matrix of the driven disc are both h_feThe thickness of the magnetic block adjusting tray is h_tConsidering the strength of the magnetic adjusting block, L is generally equal to or more than 2 (h)_fe+h)+h_tAnd at the moment, the magnetic regulating block simultaneously realizes the magnetic regulating and magnetic gathering effects.

When the length of the transverse magnetism gathering part is 0, the magnetism adjusting block support adopts a semi-closed form, a certain isolation effect can be achieved on magnetic induction lines, magnetic leakage is reduced, the magnetism adjusting device is composed of a magnetism adjusting block tray, a magnetism adjusting block support and a magnetism adjusting block, the magnetism adjusting block tray is connected with the magnetism adjusting block support, and the magnetism adjusting block is fixed. When the length of the magnetism gathering part of the magnetism regulating block is L, the magnetism regulating device is composed of four parts, namely a magnetism regulating block tray, a magnetism regulating block support, an end cover and a magnetism regulating block, wherein the tooth grooves of the magnetism regulating block tray are installed in a matched mode with the side edges of the magnetism regulating block magnetism regulating part, the tooth grooves of the magnetism regulating block support are installed in a matched mode with the magnetism gathering part of the magnetism regulating block through approximate isosceles trapezoid cross sections, and the cross sections, matched with grooves of the magnetism regulating block support, of the side edges of the end cover are approximate isosceles trapezoid bosses.

The base body of the magnetic regulating device comprises a magnetic regulating block tray, a magnetic regulating block support and an end cover, the same materials are adopted, the base body material is non-magnetic-conductive materials such as epoxy resin, nylon materials or austenitic stainless steel, and the like, and the magnetic regulating block tray, the magnetic regulating block tray and the end cover are connected through a countersunk rivet connection or a welding method.

When the length of the magnetism gathering part of the magnetism adjusting block is L, the magnetism adjusting device can simultaneously realize the magnetism adjusting and the magnetism gathering effects, the magnetism adjusting block is made of improved ferrite or other soft magnetic materials and is manufactured by a 3D printing technology or a casting technology, the magnetism gathering part adopts an approximate isosceles trapezoid cross section, and the strength reliability of the magnetism adjusting block is enhanced.

The invention has the advantages that: the magnetic regulating block provided by the invention has two parts, namely a magnetic regulating part and a magnetic gathering part, and realizes magnetic regulation and the function according to the magnetic gathering arrangement mode of the permanent magnet. The side edge of the axial magnetism gathering part of the magnetism adjusting block adopts 1/2 sine curves, the transverse part adopts an approximate isosceles trapezoid cross section, the structural strength of the magnetism adjusting device is improved through the self structure, the use of a connecting bridge is avoided, the strength is increased, and the eddy current loss is reduced. The magnetic adjusting block support is semi-closed, so that magnetic leakage can be reduced, and the utilization efficiency of the permanent magnet is improved. The magnetic adjusting block support and the magnetic adjusting block are fixed in a structural matching mode and a mechanical connection mode, and the stability of the magnetic adjusting device is enhanced. And the disk structure is adopted, so that the optimization effect of the periodic sinusoidal curve of the side 1/2 on the magnetic field modulation is kept consistent while the air gap is adjusted. The magnetic adjusting block with the magnetic gathering part of 0 or L made of different materials and in a connecting mode can be selected according to different occasions, and the requirements of different working conditions with high torque density requirements are met.

Drawings

The invention is further described in the following with reference to the accompanying drawings and examples

Fig. 1 is a schematic view of an assembly of a disc type magnetic gear using a magnetic flux concentration type magnetic flux adjusting device.

FIG. 2 is a cross-sectional view 1/4 of the overall three-dimensional structure of the magnetic flux concentrating portion of the embodiment shown at 0.

Fig. 3 is a three-dimensional structure diagram of the magnetic adjustment block tray of the embodiment.

Fig. 4 is a three-dimensional structural view of a single magnetic adjusting block made of a material such as ferrite whose magnetic convergence part is 0 in the embodiment.

Fig. 5 is a three-dimensional structural view of a single magnetic adjusting block of a silicon steel sheet material with a magnetic concentration portion of 0 according to an embodiment.

FIG. 6 is a three-dimensional structural view of a magnetic adjustment block holder with a magnetic convergence part of 0 in the embodiment.

FIG. 7 is a three-dimensional structural view of a magnetic tuning device assembly with a magnetic convergence portion of 0 according to an embodiment.

FIG. 8 is a three-dimensional structure diagram of a single magnetic tuning block with an L-shaped magnetic gathering part according to an embodiment.

FIG. 9 is a three-dimensional structure diagram of the magnetic adjusting block with L-shaped magnetic gathering part and the magnetic adjusting block tray in the embodiment.

FIG. 10 is a three-dimensional structure diagram of a magnetic adjustment block bracket with an L-shaped magnetic concentration part of the embodiment.

Fig. 11 is a three-dimensional structural view of an end cap having an L-shaped magnetism collecting portion according to an embodiment.

FIG. 12 is a view showing the structure of a magnetic tuning device assembly having a magnetic convergence portion of L in the embodiment.

Figure 13 is a schematic view of a Halbach arrangement of the driving disk and driven disk permanent magnets of an embodiment.

FIG. 14 is a schematic diagram of the close arrangement of the permanent magnets of the driving disk and the driven disk of the embodiment.

Fig. 15 is a sinusoidal curve of 1/2 periods of the side of the magnetic tuning part.

Fig. 16 is a schematic view of an approximate isosceles trapezoid cross section of the magnetism collecting portion.

FIG. 17 is a cross-sectional view 1/4 of the overall three-dimensional structure of the magnetic flux concentrating portion of the embodiment shown as L.

When the magnetism-gathering part is 0: 1-driving shaft 2-driving shaft sleeve 3-driving disc matrix 4-driving disc permanent magnet 5-magnetic adjusting block 6-driven disc permanent magnet 7-driven shaft 8-driven shaft sleeve 9-driven disc matrix 10-magnetic adjusting block tray 11-rivet 12-magnetic adjusting block support

When the magnetism gathering part is L: 1-driving shaft 2-driving shaft sleeve 3-driving disc matrix 4-driving disc permanent magnet 6-driven disc permanent magnet 7-driven shaft 8-driven shaft sleeve 9-driven disc matrix 10-magnetic adjusting block tray 13-magnetic adjusting block support 14-magnetic adjusting block 15-end cover 16-rivet

Detailed Description

As shown in fig. 1, a disk magnetic gear using a magnetism-gathering type magnetism-adjusting device is composed of a driving disk assembly I, a magnetism-adjusting device assembly II and a driven disk assembly III.

The driving disc assembly comprises a driving shaft 1, a driving shaft sleeve 2, a driving disc base body 3, permanent magnets 4 and screws, the right end of the driving shaft is in key connection with the driving shaft sleeve, the right side of the driving disc sleeve is connected with the driving disc base body 3 through the screws, the driving disc permanent magnets 4 are closely arranged, namely, gaps between the permanent magnets are zero, the driving disc base body 3 is provided with a veneer, the driven disc assembly comprises a driven shaft 7, a driven shaft sleeve 8, a driven disc base body 9, driven disc permanent magnets 6 and screws, the left end of the driven shaft 7 is in key connection with the driven shaft sleeve 8, the driven disc sleeve 8 left side is connected with the driven disc base body 9 through the screws, the driven disc permanent magnets 6 are also closely arranged, and the veneer is arranged on the driven.

When the magnetism gathering part is 0, namely the magnetism adjusting block has no magnetism gathering part, the magnetism adjusting device assembly comprises a magnetism adjusting block 5, a magnetism adjusting block tray 10, a magnetism adjusting block support 12 and a rivet 11, a side 1/2 periodic sinusoidal curve of the magnetism adjusting block 5 is enabled to coincide with a side 1/2 periodic outward convex sinusoidal curve of a clamping groove of the magnetism adjusting block tray 10, so that the magnetism adjusting block 5 and the magnetism adjusting block tray 10 are installed in a matched mode, the magnetism adjusting block support 12 is connected with the magnetism adjusting block tray 10 through the rivet 11, and the magnetism adjusting block 5 is surrounded and completely fixed. When the magnetic field modulation device works, the driving disk base body 3 rotates, the driving disk permanent magnet 4 on the driving disk base body 3 generates a magnetic field, the magnetic field generated by the driving disk base body 3 is modulated by utilizing the high magnetic conductivity of the magnetic modulation block 5, and the harmonic waves of the modulated magnetic field interact with the magnetic field generated by the driven disk permanent magnet 6 on the driven disk base body 9 to drive the driven disk to rotate.

When the length of the magnetic part is L, the magnetic adjusting device assembly comprises a magnetic adjusting block 14, a magnetic adjusting block tray 10, a magnetic adjusting block support 13, an end cover 15 and a rivet 16, a side 1/2 periodic sinusoidal curve of the magnetic adjusting block 14 magnetic adjusting part is made to coincide with a side convex 1/2 periodic sinusoidal curve of a clamping groove of the magnetic adjusting block tray 10, an approximate isosceles trapezoid surface of a magnetic gathering part of the magnetic adjusting block 14 is made to coincide with an approximate isosceles trapezoid surface of the bottom of a groove of the magnetic adjusting block support 13, the magnetic adjusting block support 13 is connected with the end cover 15 through the rivet 16, and the magnetic adjusting block 14 is surrounded and completely fixed. If the magnetic regulating block base material is a metal non-magnetic conducting material such as stainless steel, a welding method can be adopted. When the magnetic field adjusting device works, the driving disk base body 3 rotates, the driving disk permanent magnet 4 on the driving disk base body 3 generates a magnetic field, the magnetic field generated by the driving disk base body 3 is adjusted by the magnetic adjusting part of the magnetic adjusting block by utilizing the performance of high magnetic conductivity of the magnetic adjusting block 14, harmonic waves of the adjusted magnetic field interact with the magnetic field generated by the driven disk permanent magnet 6 on the driven disk base body 9 to drive the driven disk base body 9 to rotate, meanwhile, the magnetism gathering part of the magnetic adjusting block 14 benefits from the high magnetic conductivity of the magnetic adjusting block, magnetic leakage is restrained, and the magnetic field density of the base body 9 between the driving disk base body 3 and the driven disk.

The side edges of the axial magnetism gathering parts of the magnetism regulating blocks 5 and 14 in the magnetism regulating device are of 1/2-period sine curve structures, tooth groove gaps of a magnetism regulating block tray 10 are formed, 1/2-period sine curves complementary to the side edges of the axial magnetism gathering parts are formed in the side edges, the contact area of the magnetism regulating blocks 5 or the magnetism regulating blocks 14 and the magnetism regulating block tray 10 is increased, displacement caused by axial force is overcome to a large extent, the generation of connecting bridges is reduced through smooth curves, and the strength and rigidity of the magnetism regulating device are enhanced.

The magnetic adjusting block 5 can be made of silicon steel sheets or ferrite materials and is processed by sheet stacking or casting molding, and the magnetic adjusting block 14 is made of improved soft magnetic materials such as improved ferrite or iron-based amorphous alloy and is processed and molded by casting or 3D printing technology, so that the defect that the ferrite with a complex shape cannot be processed by the traditional processing method is overcome. Meanwhile, the defect of insufficient 3D printing strength is overcome to a certain extent by the structural design of the magnetic adjusting block. The magnetic adjusting block bracket, the magnetic adjusting block tray and the end cover adopt non-magnetic-conductive materials, such as nylon, plastics, epoxy resin and stainless steel. The magnetic adjusting block brackets 12 and 13 and the magnetic adjusting block tray 10 form a cup-shaped structure, so that magnetic leakage is reduced, magnetism is enhanced, and the utilization rate of the permanent magnet is improved.