WO2021082379A1

WO2021082379A1 - Disc type magnetic gear using magnetism gathering type magnetism adjusting device

Info

Publication number: WO2021082379A1
Application number: PCT/CN2020/087976
Authority: WO
Inventors: 杨超君; 朱莉; 彭志卓; 邰蒋西; 高洋; 杨凡; 王凯
Original assignee: 江苏大学
Priority date: 2019-10-31
Filing date: 2020-04-30
Publication date: 2021-05-06
Also published as: CN110752735B; CN110752735A

Abstract

The invention relates to the technical field of transmission in mechanical engineering, in particular to a disc type magnetic gear using a magnetism gathering type magnetism adjusting device. The magnetic gear is composed of a driving disc assembly, a driven disc assembly and a magnetism gathering type magnetism adjusting device assembly, and is characterized in that: a magnetism adjusting block of the magnetism gathering type magnetism adjusting device adopts a structure with ½ periodic sine sides and an approximate isosceles trapezoid cross section, in combination with a mechanical structure installed in a matching way, to enhance the reliability of the magnetic gear. Different connection modes can be selected according to the different base materials of the magnetism adjusting block. In order to prevent magnetic leakage at the end, a transverse soft magnetic material is added, the magnetism adjusting device can simultaneously realize the magnetism adjusting and gathering effects, improving the magnetism adjusting performance, and enhancing the magnetism gathering capacity. The permanent magnets of the driving disc and the driven disc are both arranged in a 90-degree Halbach arrangement mode or a compact arrangement mode and the like with higher magnetic energy density. The present invention enhances the torque density of the magnetic gear by the design of the structure of the magnetism adjusting device and the arrangement of the permanent magnet, so that the magnetic gear is widely applied to a high torque working environment.

Description

Disk type magnetic gear using magnetism-gathering type magnetization device

Technical field

The invention relates to the technical field of transmission in mechanical engineering, and is a non-contact connected magnetic gear, in particular to a disk-type magnetic gear using a magnetism-gathering type magnetization device. It can be applied to non-contact transmission systems with high torque and high and low speed transmission.

Background technique

In industrial production, mechanical gears are widely used in various transmission systems due to their fixed transmission ratio, wide applicable speed and load range, and long service life. However, the vibration and noise in the mechanical gear transmission process are relatively large, and the gears interact with each other. Contact wear is more serious, and the mechanical gear does not have overload protection. These shortcomings will reduce the transmission performance of the mechanical gear and limit its use in certain specific working environments. With the development of modern technology and the improvement of the performance of permanent magnet materials, many scholars have proposed a solution to replace traditional mechanical gears with magnetic gear structures.

Magnetic gears achieve the purpose of transmission through magnetic coupling forces that attract and repel each other. Through the magnetic field coupling in the air gap, the non-contact transmission of force and torque is realized. Compared with traditional mechanical gears, it has non-contact transmission and overload protection. And the advantages of high transmission efficiency. The high-performance magnetic gear introduces a magnetic pole piece. The permanent magnets in the inner and outer rotors are modulated by the magnetic pole pieces. The inner and outer air gaps generate a harmonic magnetic field equal to the number of permanent magnet pole pairs of the rotor, which improves the permanent magnetism. The utilization rate of the magnet greatly increases the transmission efficiency of the magnetic gear.

In the invention patent 201710461909.0 of Jiangsu University, an air gap adjustable magnetic gear using a side sine magnetization device is disclosed. The side sine structure of the magnetization block is applied to the cylindrical magnetic gear. The magnetization block application is 1 The sine curve of /2 period changes in the axial direction, and the modulation effect of the sine curve of 1/2 period is different during the air gap adjustment process. The end of the permanent magnet does not adopt a magnetization method, which will generate more magnetic leakage, and does not consider changing the arrangement of the permanent magnets to achieve high torque density transmission of the magnetic gear.

IEEE TRANSACTIONS ON MAGNETICS, VOL.51, NO.11, NOVEMBER 2015 in A Novel Magnetic Gear: Toward a Higher Torque Density discloses a theoretical model of a high-density magnetic gear that can concentrate axial magnetism and transverse magnetism. The axial magnetization part is a sector ring with a certain thickness, and the cross section of the transverse magnetization part is also a sector ring, which is easy to be sucked out by the axial force between the permanent disks or thrown out of the magnetic gear by the huge centrifugal force during the working process, and It does not indicate the specific material selection and molding method of the magnetization block and the specific structure used to support the magnetization block.

Summary of the invention

In order to overcome the shortcomings of insufficient utilization of the magnetic energy of the permanent magnets in the current application of magnetic gears, the structure of the magnetization block cannot meet the working requirements, the magnetic leakage of the magnetic gears, etc., a magnetizing part made of soft magnetic materials is added at the end of the permanent magnet. The side of the magnetization part of the magnetization block adopts a 1/2-period sine curve, and the magnetization part adopts an approximate isosceles trapezoid cross-section. Combining the arrangement of permanent magnets with high magnetic energy density, a disk using a magnetization magnetization device is proposed. Type magnetic gear.

A disk-type magnetic gear using a concentrating magnetism adjusting device is composed of a driving disk assembly, a driven disk assembly and a magnetizing device assembly. The magnetizing device assembly is installed in the driving disk assembly and the driven disk assembly. In between, the magnetic adjustment device assembly includes a magnetic control block, a magnetic control block tray, a magnetic control block bracket and an end cover. The magnetic control block is installed by the magnetic control block tray and the magnetic control block bracket. The end cover and the magnetic control block tray pass through Rivet connection to completely fix the magnetization block. The driven disk assembly includes a driven shaft, a driven shaft sleeve, a driven disk base, a driven disk permanent magnet and a screw, and the left end of the driven shaft passes through the driven shaft sleeve Key connection, the left side of the driven disk sleeve is connected to the driven disk base by screws. The permanent magnets of the driven disk are closely arranged on the driven disk base and mounted on the surface. The driving disk assembly includes a driving shaft, a driving shaft sleeve, The drive plate base body, drive plate permanent magnets and screws are installed in the same way as the driven plate.

The number of magnetic tuning blocks is n _s , and n _s is equal to the sum of the number of pole pairs of the _{driving disk P 1} and the number of pole pairs of the driven disk P ₂ .

The axial soft magnetic material part of the magnetic control block in the magnetic control device realizes the effect of magnetic field modulation by concentrating the magnetic lines of induction, and the lateral soft magnetic material part added by the magnetic control block can effectively weaken the end of the permanent magnet by concentrating the magnetic lines of induction. Magnetic flux leakage forms a magnetic flux-concentrating magnetization block, and at the same time achieves the purpose of magnetic field modulation and enhancement of the torque density of the gear. The axial part of the magnetization block is the magnetization part, and the lateral part is the magnetization part. The side of the magnetization part is a 1/2-period sine curve to improve the magnetization effect. Combined with the approximate isosceles trapezoidal cross-section structure of the magnetization part, it is installed with the magnetization block tray and bracket to enhance the reliability of the magnetization device.

The present invention further comprises: adjusting the thickness of the magnetic portion of the same magnetic transfer blocks and the modulation is h _t magnet tray thickness, which side is sinusoidal half cycle of the expression of y = A sinωx, magnet block transfer tray The side of the cogging adopts a 1/2-period sine curve matched with the side of the magnetization block. Increase the magnetization part of the disk gear magnetization block, the length of the magnetization part is 0 or L. The length of the magnetizing part is 0, and the magnetizing device has only the magnetizing part. When the length of the magnetization part is L, the thickness of the permanent magnets of the driving disk and the driven disk are both h, the thickness of the driving disk base and the driven disk base are both h _fe , and the thickness of the magnetic tuning block tray is h _t , considering the magnetic tuning The strength of the block is generally taken as L≥2(h _fe +h)+h _t . At this time, the magnetization block achieves both the magnetization and magnetization effects at the same time.

When the length of the transverse magnetization part is 0, the magnetic flux control block bracket adopts a semi-closed form, which can isolate the magnetic induction line to a certain extent and reduce magnetic flux leakage. The magnetic modulation device consists of the magnetic flux block tray, the magnetic flux block bracket and the magnetic flux regulator. The block consists of three parts, the magnetic block tray is connected with the magnetic block bracket, and the magnetic block is fixed. When the length of the magnetizing part of the magnetizing block is L, the magnetizing device is composed of the magnetizing block tray, the magnetizing block holder, the end cover and the magnetizing block. The slot of the magnetizing block tray and the side of the magnetizing part of the magnetizing block For installation, the slot of the magnetic block bracket adopts an approximately isosceles trapezoidal cross-section to coordinate with the magnetizing part of the magnetic block. The side of the end cover has a cross section that matches the groove of the magnetic block bracket, which is an approximately isosceles trapezoidal boss. .

The base body of the magnetic tuning device includes the magnetic tuning block tray, the magnetic tuning block bracket and the end cover. The same materials are used. The base material is non-magnetic materials such as epoxy resin, nylon material or austenitic stainless steel. The magnetic block tray and the end cover are connected by countersunk rivets or welding.

When the length of the magnetizing part of the magnetizing block is L, the magnetizing device can achieve both magnetizing and magnetizing effects at the same time. The material of the magnetizing block is improved ferrite or other soft magnetic materials, which is manufactured by 3D printing technology or casting technology. The magnetic part adopts an approximate isosceles trapezoid cross-section, which enhances the strength and reliability of the magnetic tuning block. The permanent magnets on the base of the driving disc and the base of the driven disc are tightly arranged in a 90° Halbach form, and the unilateral magnetization characteristic of the Halbach array is used to enhance the magnetic field strength of the working air gap of the magnetic gear. The bottom angles of the side cross-sections of the magnetic block bracket are approximately isosceles trapezoid, and the cross-section of the magnetic-concentrating part of the magnetic block bracket are approximately isosceles trapezoids.

The advantages of the present invention: the magnetization block of the present invention has two parts: a magnetization part and a magnetization part, combined with the magnetization arrangement of the permanent magnets, and simultaneously realizes the magnetization and the function accordingly. The side of the axial magnetization part of the magnetization block adopts a 1/2 sine curve, and the transverse part adopts an approximate isosceles trapezoidal section. Through its own structure, the structural strength of the magnetization device is improved, avoiding the use of connecting bridges to increase the strength and reduce the eddy current loss. The magnetic adjustment block bracket adopts a semi-closed type, which can reduce magnetic leakage and improve the utilization efficiency of permanent magnets. Two fixing methods of structural coordination and mechanical connection are adopted between the magnetic control block bracket and the magnetic control block, which enhances the stability of the magnetic control device. In addition, the disc structure is adopted to adjust the air gap while keeping the optimization effect of the side 1/2 period sine curve on the magnetic field modulation consistent. The magnetization block with the magnetization part of 0 or L of different materials and connection modes can be selected according to different occasions to meet the requirements of different working conditions with high torque density.

Description of the drawings

The invention will be further explained below in conjunction with the drawings and embodiments

Fig. 1 is a schematic diagram of an assembly of a disk-type magnetic gear using a magnetism-concentrating type magnetization device.

Fig. 2 is a 1/4 cross-sectional view of the overall three-dimensional structure when the magnetic focusing part of the embodiment is 0.

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

FIG. 4 is a three-dimensional structure diagram of a single magnetization block made of ferrite and other materials with a magnetization part of 0 in the embodiment.

FIG. 5 is a three-dimensional structure diagram of a single magnetization block of silicon steel sheet material with a magnetization part of 0 in the embodiment.

Fig. 6 is a three-dimensional structure diagram of the magnetization block holder with the magnetization part being 0 in the embodiment.

FIG. 7 is a three-dimensional structure diagram of the magnetization device assembly with the magnetization part being 0 in the embodiment.

FIG. 8 is a three-dimensional structure diagram of a single magnetization block with an L magnetization part of the embodiment.

Fig. 9 is a three-dimensional structure diagram of an embodiment of the embodiment where the magnetization block with the magnetization part of L is installed in cooperation with the magnetization block tray.

FIG. 10 is a three-dimensional structure diagram of the magnetization block holder with the magnetization part of the embodiment L. FIG.

FIG. 11 is a three-dimensional structure diagram of an end cap with an L magnetization part of the embodiment.

Fig. 12 is a structural diagram of the magnetism adjusting device assembly with the magnetism collecting part L in the embodiment.

Fig. 13 is a schematic diagram of the Halbach arrangement of the permanent magnets of the driving disc and the driven disc of the embodiment.

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

Fig. 15 is a sine curve of 1/2 cycle of the side of the magnetization part.

Fig. 16 is a schematic diagram of an approximately isosceles trapezoidal cross section of the magnetization part.

Fig. 17 is a 1/4 cross-sectional view of the overall three-dimensional structure when the magnetism-concentrating part is L in the embodiment.

When the magnetization part is 0: 1—Drive shaft 2—Drive shaft sleeve 3—Drive disk base 4—Drive disk permanent magnet 5—Magnetic block 6—Driven disk permanent magnet 7—Driven shaft 8—Driven shaft Sleeve 9—Driven Disk Base 10—Magnetic Block Tray 11—Rivet 12—Magnetic Block Bracket

When the magnetization part is L: 1—Drive shaft 2—Drive shaft sleeve 3—Drive disk base 4—Drive disk permanent magnet 6—Driven disk permanent magnet 7—Driven shaft 8—Driven shaft sleeve 9—Slave Movable plate base 10-magnetic block tray 13-magnetic block bracket 14-magnetic block 15-end cover 16-rivet

Detailed ways

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

The driving disc assembly includes a driving shaft 1, a driving shaft sleeve 2, a driving disc base body 3, a permanent magnet 4 and a screw. The right end of the driving shaft is connected with the driving shaft sleeve by a key, and the right side of the driving disc sleeve is connected with the driving disc base by a screw 3. The permanent magnets 4 of the driving disc are arranged tightly, that is, the gap between the permanent magnets is zero. They are mounted on the base 3 of the driving disc. The driven disc assembly includes a driven shaft 7, a driven shaft sleeve 8. The driven disk base 9, the driven disk permanent magnet 6 and the screws, the left end of the driven shaft 7 and the driven shaft sleeve 8 are connected by a key, and the left side of the driven disk sleeve 8 is connected to the driven disk base 9 by screws. The disk permanent magnets 6 are also arranged in a close arrangement, and are mounted on the surface of the driven disk base 9.

When the magnetizing part is 0, that is, the magnetizing block has no magnetizing part. The magnetizing device assembly includes the magnetizing block 5, the magnetizing block tray 10, the magnetizing block bracket 12 and the rivet 11, so that the side of the magnetizing block 5 The 1/2 cycle sine curve coincides with the 1/2 cycle convex sine curve on the side of the card slot of the magnetic block tray 10, so that the magnetic block 5 and the magnetic block tray 10 are installed in cooperation, and the magnetic block bracket 12 is connected to the magnetic block tray 10. The magnetic express tray 10 is connected by rivets 11, which surrounds the magnetization block 5 and is completely fixed. When working, the active disk base 3 rotates, and the active disk permanent magnet 4 on the active disk base 3 generates a magnetic field. The magnetic field generated by the active disk base 3 is modulated by using the high permeability performance of the magnetic tuning block 5, and the modulated magnetic field has The harmonics interact with the magnetic field generated by the driven disk permanent magnet 6 on the driven disk base 9 to drive the driven disk to rotate.

When the length of the magnetic part is L, the magnetizing device assembly includes the magnetizing block 14, the magnetizing block tray 10, the magnetizing block bracket 13, the end cover 15 and the rivet 16, so that the magnetizing block 14 is the side of the magnetizing part 1 The /2-period sine curve coincides with the convex 1/2-period sine curve on the side of the slot of the magnetic block tray 10, and the approximate isosceles trapezoid surface of the magnetization part of the magnetic block 14 is at the bottom of the groove of the magnetic block bracket 13 Approximately isosceles trapezoid surfaces overlap, and the magnetic modulation block bracket 13 and the end cover 15 are connected by rivets 16 to surround the magnetic modulation block 14 and be completely fixed. If the base material of the magnetic tuning block is a metal non-magnetic material such as stainless steel, a welding method can be used. When working, the active disk base 3 rotates, and the active disk permanent magnet 4 on the active disk base 3 generates a magnetic field. Using the high permeability performance of the magnetic tuning block 14, the magnetic tuning part of the magnetic tuning block modulates the magnetic field generated by the active disk substrate 3 , The harmonics of the modulated magnetic field interact with the magnetic field generated by the driven disk permanent magnet 6 on the driven disk base 9 to drive the driven disk base 9 to rotate. At the same time, the magnetization part of the magnetization block 14 benefits Due to its higher magnetic permeability, magnetic leakage is suppressed, and the magnetic field density of the base 9 between the driving disc base 3 and the driven disc is enhanced.

The side of the axial magnetization part of the magnetization block 5 and the magnetization block 14 in the magnetization device adopts a 1/2-period sine curve structure. The slot gap of the magnetization block tray 10 is adopted with the axial magnetization part. The side-side complementary 1/2-period sine curve increases the contact area between the magnetic control block 5 or the magnetic control block 14 and the magnetic control block tray 10, which greatly overcomes the displacement caused by the axial force, and the smooth curve reduces the connecting bridge. The generation of magnetic field enhances the strength and rigidity of the magnetic modulation device. The magnetization part adopts an approximate isosceles trapezoid cross-section. The difference from the isosceles trapezoid is that the upper and lower bases are arcs, and the sides are approximately isosceles trapezoids. The lower base angle is α, and the magnetic adjustment block 14 and The contact area between the magnetic modulation block brackets 13 can better overcome the displacement caused by the radial force, and further increase the strength and rigidity of the magnetic modulation device.

The magnetic control block 5 can be made of silicon steel sheet or ferrite material, which is processed by sheet stacking or casting. The magnetic control block 14 is made of improved ferrite or iron-based amorphous alloy and other improved soft magnetic materials, which can be processed by casting or 3D The printing technology is processed and formed, which overcomes the obstacle that traditional processing methods cannot process complex-shaped ferrites. At the same time, the structural design of the magnetization block itself overcomes the shortcomings of insufficient 3D printing strength to a certain extent. The magnetic block bracket, magnetic block tray and end cover are made of non-magnetic materials, such as nylon, plastic, epoxy resin and stainless steel. The magnetic

modulation block brackets

12 and 13 and the magnetic modulation block tray 10 form a cup-shaped structure, which reduces magnetic flux leakage, enhances magnetization, and improves the utilization rate of permanent magnets.

Claims

A disk-type magnetic gear using a magnetism-gathering type magnetization device includes a driving disk assembly and a driven disk assembly. The driven disk assembly includes a driven shaft, a driven shaft sleeve, a driven disk base, and a driven disk. Disk permanent magnets and screws. The left end of the driven shaft and the driven shaft sleeve are connected by a key. The left side of the driven disk sleeve is connected to the driven disk base by screws. The permanent magnets of the driven disk are closely arranged in the driven disk base. Upper veneer installation; the drive disc assembly includes the drive shaft, the drive shaft sleeve, the drive plate base, the drive plate permanent magnet and the screws. The right end of the drive shaft is connected with the drive shaft sleeve by a key, and the right side of the drive sleeve is connected by a screw Active disc base body. The permanent magnets of the active disc are arranged tightly, and are mounted on the surface of the active disc base. It is characterized in that there is also a magnetization device, and the magnetism device assembly is installed in the driving disc assembly and the driven disc assembly. In between, the magnetic adjustment device assembly includes a magnetic control block, a magnetic control block tray, and a magnetic control block bracket. The magnetic control block is installed in cooperation with the magnetic control block tray and the magnetic control block bracket to fix the magnetic control block.
The disk-type magnetic gear employing a magnetism-gathering type magnetization device according to claim 1, wherein the magnetization block bracket adopts a semi-closed form to isolate the magnetic lines of induction and reduce magnetic flux leakage; The axial soft magnetic material part of the block realizes the effect of magnetic field modulation by concentrating the magnetic lines of induction, forming the magnetization part; make the side of the magnetization block 1/2 cycle sine curve and the side of the magnetization block tray card slot 1/ The two-period convex sine curve overlaps so that the magnetization block and the magnetization block tray are installed together. The magnetization block bracket is connected with the magnetization fast tray to surround and completely fix the magnetization block; the magnetization block is made of silicon steel sheet or iron Ferrite soft magnetic material, manufactured by sheet stacking or casting process.
Magnetic disk type gear magnetism adjusting an application of the magnetic device as claimed in claim 2, wherein the thickness of the same magnetic transfer portion for magnetic transfer blocks and magnetic transfer block h t the thickness of the tray, the side thereof The expression for a sine curve of 1/2 period is y=Asinωx, and the side of the slot of the magnetization block tray adopts a sine curve of 1/2 period that matches the side of the magnetization block.
A disk-type magnetic gear using a magnetism-gathering type magnetization device includes a driving disk assembly and a driven disk assembly. The driven disk assembly includes a driven shaft, a driven shaft sleeve, a driven disk base, and a driven disk. Disk permanent magnets and screws. The left end of the driven shaft and the driven shaft sleeve are connected by a key. The left side of the driven disk sleeve is connected to the driven disk base by screws. The permanent magnets of the driven disk are closely arranged in the driven disk base. Upper veneer installation; the drive disc assembly includes the drive shaft, the drive shaft sleeve, the drive plate base, the drive plate permanent magnet and the screws. The right end of the drive shaft is connected with the drive shaft sleeve by a key, and the right side of the drive sleeve is connected by a screw Active disc base body, the permanent magnets of the active disc are arranged closely and mounted on the surface of the active disc base body. The feature is that the magnetic adjustment device assembly is installed between the driving disc assembly and the driven disc assembly, and the magnetic adjustment device assembly is installed between the driving disc assembly and the driven disc assembly. The assembly includes a magnetic block, a magnetic block tray, a magnetic block bracket and an end cover. The magnetic block is installed by the magnetic block tray and the magnetic block bracket. The end cover is connected with the magnetic block tray to completely fix the magnetic block. .
A disk-type magnetic gear employing a concentrating magnetization type magnetization device as claimed in claim 4, characterized in that the axial soft magnetic material part of the magnetization block in the magnetization device realizes the magnetic field by concentrating magnetic lines of induction The function of modulation, the part of the transverse soft magnetic material added by the magnetization block can effectively reduce the magnetic flux leakage at the end of the permanent magnet by concentrating the magnetic line of induction, forming a magnetizing magnetization block, and at the same time achieve magnetic field modulation and increase the torque density of the gear. The purpose; the axial part of the magnetizing block is the magnetizing part, and the transverse part is the magnetizing part; the side of the magnetizing part is a 1/2-period sine curve to improve the magnetizing effect; the magnetizing part adopts an approximate isosceles trapezoidal section The difference between the structure and the isosceles trapezoid is that the upper and lower bottom edges are arcs, and the sides are approximated as isosceles trapezoids. The lower bottom angle is α, which increases the contact area between the magnetization block and the magnetization block bracket. , The slot of the magnetic tuning block tray is installed in coordination with the side of the tuning part of the tuning block. The slot of the tuning block bracket adopts an approximate isosceles trapezoid cross-section and the magnetizing part of the tuning block is installed in cooperation with the side of the end cover. The cross-section of the magnetic block bracket grooves is similar to an isosceles trapezoidal boss, which enhances the reliability of the magnetic tuning device; the magnetic tuning block material is improved ferrite or other soft magnetic materials, manufactured by 3D printing technology or casting technology.
An application of a magnetic modulation type magnetism magnetic disc gear means, characterized in that the thickness of the magnetic portion of the magnetic shunt tone block with tone thickness h t magnet tray same side thereof as claimed in claim 5, wherein The expression of a sine curve with a side of 1/2 period is y=Asinωx, and the side of the slot of the magnetic block tray adopts a sine curve of 1/2 period matched with the side of the magnetic block; the length of the magnetizing part is L When the thickness of the permanent magnets of the driving disk and the driven disk are both h, the thickness of the driving disk base and the driven disk base are both h fe , the thickness of the magnetic tuning block tray is h t , considering the strength of the magnetic tuning block, take L ≥2(h fe +h)+h t , at this time, the magnetization block realizes both the magnetization and magnetization effects; the side section of the magnetization block bracket card slot is approximately isosceles trapezoid, and the magnetization part of the magnetization block is approximate The bottom angle of the isosceles trapezoid is α, and α is between 60° and 75°.
According to claim 1 or 4, a magnetic disk gear using a concentrating magnetization device is characterized in that the permanent magnets on the driving disk base and the driven disk base are arranged in a 90°Halbach form. , The use of the single-side magnetization characteristic of the Halbach array to enhance the magnetic field strength of the working air gap of the magnetic gear.
A disk-type magnetic gear using a magnetism-concentrating magnetism device according to claim 1 or 4, wherein the number of magnetism-tuning blocks is n s , and n s is equal to the number of pole pairs P 1 of the driving disk and the driven The sum of the number of disc pole pairs P 2 .
The disk-type magnetic gear employing a magnetization type magnetization device according to claim 1, wherein the base body of the magnetization device includes a magnetization block tray and a magnetization block bracket, and the base material is epoxy resin, nylon Material or austenitic stainless steel non-magnetic material, the magnetic block bracket and the magnetic block tray are connected by countersunk rivets or welding.
According to claim 4, a disk-type magnetic gear using a concentrating magnetism adjusting device, wherein the base of the magnetizing device includes a magnetizing block tray, a magnetizing block bracket and an end cover, and the base material is epoxy Resin, nylon material or austenitic stainless steel non-magnetic material, the magnetic block bracket, the magnetic block tray and the end cover are connected by countersunk rivets or welding.