CN217956808U

CN217956808U - Axial permanent magnet motor

Info

Publication number: CN217956808U
Application number: CN202222150977.4U
Authority: CN
Inventors: 韦万虎; 叶鹏; 洪博; 金国华; 沈小康; 祝承楷
Original assignee: Hangzhou Zhenzheng Weidun Motion Control Technology Co ltd
Current assignee: Hangzhou Zhenzheng Weidun Motion Control Technology Co ltd
Priority date: 2022-08-16
Filing date: 2022-08-16
Publication date: 2022-12-02
Anticipated expiration: 2032-08-16

Abstract

The utility model provides an axial permanent-magnet machine, include: a housing; the rotating shaft is movably connected with the housing, one end of the rotating shaft is positioned outside the housing, and the other end of the rotating shaft is positioned in the inner cavity of the housing; a front stator assembly; a rear stator assembly; the rotor subassembly, the rotor subassembly is located the housing inner chamber and is located between stator subassembly and the back stator module, the rotor subassembly includes the rotor dish, chuck and a plurality of permanent magnet, chuck middle part and pivot fixed connection, chuck and rotor dish fixed connection just set up with the axle center, the chuck is equipped with a plurality of positioning slot along chuck circumference evenly distributed, positioning slot's quantity is the same with the quantity of permanent magnet, positioning slot's cell wall profile matches in the bottom end portion profile of permanent magnet, permanent magnet and the equal fixed connection of rotor dish and chuck. The utility model discloses a set up the chuck, can pinpoint the permanent magnet mounted position with the help of positioning channel groove when installing the permanent magnet on the rotor dish, improve the installation accuracy by a wide margin, guarantee motor operation security and reliability.

Description

Axial permanent magnet motor

Technical Field

The utility model relates to a motor, concretely relates to axial permanent-magnet machine belongs to the motor and makes technical field.

Background

The axial permanent magnet motor is a motor with compact structure and high efficiency, and is suitable for being applied to occasions requiring high torque density and compact space, such as electric vehicles, wind power generation, ship propulsion and other application fields. A rotor assembly in an existing axial permanent magnet motor generally comprises a rotor disc and a plurality of permanent magnets, the permanent magnets are required to be uniformly arranged on the surface of the rotor disc, however, due to the existence of installation errors, the position precision between the permanent magnets and the rotor disc is difficult to guarantee, and the operation safety and reliability of the motor are affected.

SUMMERY OF THE UTILITY MODEL

Based on above background, the utility model aims to provide an axial permanent magnet motor has higher position precision between its inside permanent magnet and the rotor dish.

In order to realize the purpose of the utility model, the utility model provides a following technical scheme:

an axial permanent magnet motor comprising:

a housing having an interior cavity;

the rotating shaft is movably connected with the housing, one end of the rotating shaft is positioned outside the housing, and the other end of the rotating shaft is positioned in the inner cavity of the housing;

the front stator assembly is arranged in the inner cavity of the housing and fixedly connected with the front end of the housing;

the rear stator assembly is arranged in the inner cavity of the housing and is fixedly connected with the rear end of the housing;

the rotor subassembly, the rotor subassembly is located the housing inner chamber and is located between preceding stator subassembly and the back stator subassembly, and the rotor subassembly includes rotor dish, chuck and a plurality of permanent magnet, the chuck middle part with pivot fixed connection, the chuck with rotor dish fixed connection just sets up with the axle center, and the chuck is equipped with a plurality of positioning channel section along chuck circumference evenly distributed, positioning channel section's quantity with the quantity of permanent magnet is the same, and positioning channel section's cell wall profile matches in the bottom tip profile of permanent magnet, permanent magnet and the equal fixed connection of rotor dish and chuck.

Through setting up the chuck, can pinpoint the permanent magnet mounted position with the help of positioning slot when installing the permanent magnet on the rotor dish, improve the installation accuracy by a wide margin, when this axial permanent-magnet machine moves, positioning slot also improves the security and the reliability of motor operation to the spacing of permanent magnet.

Preferably, the housing comprises a shell, a front end cover and a rear end cover, the shell is hollow and has two open ends, the front end cover and the rear end cover are respectively arranged at two ends of the shell and are respectively fixedly connected with end parts of the two ends of the shell, a first sealing ring is arranged at a part where the front end cover is connected with the end part of the shell, a second sealing ring is arranged at a part where the rear end cover is connected with the end part of the shell, the rotating shaft is respectively movably connected with the front end cover and the rear end cover, and one end of the rotating shaft penetrates through the middle part of the front end cover and is exposed out of the housing. The sealing performance and the reliability of the axial permanent magnet motor are improved through the first sealing ring and the second sealing ring.

Preferably, the shell is provided with a plurality of annular protrusions protruding out of the surface of the shell, the annular protrusions are distributed on the surface of the shell along the direction of the central axis of the shell, the surface of the shell is further provided with air gap observation holes and plugs, and the plugs are embedded in the air gap observation holes. The heat radiation performance of the shell is enhanced through the annular convex part.

Preferably, the housing further comprises a rear cover, the rear cover is fixedly connected with the rear end part of the rear end cover, and a third sealing ring is arranged at a position where the rear cover is connected with the rear end part of the rear end cover. The sealing performance and the reliability of the axial permanent magnet motor are further improved through the third sealing ring.

Preferably, the surface of the rotating shaft is provided with a plurality of step parts, the surface of at least one step part is provided with a plurality of chamfer planes which are uniformly distributed along the circumferential direction of the surface of the step part, the middle part of the chuck is provided with a mounting hole, and the hole wall profile of the mounting hole is matched with the circumferential surface profile of the step part with the chamfer plane.

Preferably, the front stator assembly comprises a front stator core and front stator windings, and the front stator windings are distributed on the surface of the front stator core along the circumferential direction of the front stator core.

Preferably, the rear stator assembly comprises a rear stator core and rear stator windings, and the rear stator windings are circumferentially distributed on the surface of the rear stator core along the rear stator core.

Preferably, the axial permanent magnet motor further comprises a front adapter plate and a rear adapter plate, the front adapter plate is arranged in an inner cavity of the housing and fixedly connected with the front end cover, the front adapter plate is fixedly connected with the front stator assembly, a first hole is formed in the middle of the front adapter plate, the hole wall of the first hole is in clearance fit with the rotating shaft, the rear adapter plate is arranged in the inner cavity of the housing and fixedly connected with the rear end cover, the rear adapter plate is fixedly connected with the rear stator assembly, a second hole is formed in the middle of the rear adapter plate, and the rotating shaft penetrates through the second hole and is movably connected with the rear adapter plate.

Preferably, the axial permanent magnet motor further comprises a front bearing and a rear bearing, the outer wall of the front bearing is connected with the middle of the front end cover, the inner wall of the front bearing is connected with the rotating shaft, the outer wall of the rear bearing is connected with the rear adapter plate, and the inner wall of the rear bearing is connected with the rotating shaft.

Preferably, the axial permanent magnet motor further comprises an encoder and a cable connector, the encoder is fixedly connected with the end part of the rotating shaft, which is located in the inner cavity of the housing, and the cable connector is arranged on the outer wall of the housing.

Compared with the prior art, the utility model has the advantages of it is following:

the utility model discloses an axial permanent magnet motor, through setting up the chuck, can pinpoint the permanent magnet mounted position with the help of positioning groove when installing the permanent magnet on the rotor dish, improve the installation accuracy by a wide margin, guarantee motor operation security and reliability.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic perspective view of an axial permanent magnet motor according to the present invention;

fig. 2 is a schematic diagram of the internal structure of the axial permanent magnet motor of the present invention;

fig. 3 is a schematic front view of the rotor assembly of the present invention;

fig. 4 is a schematic front view of the front end cap of the present invention;

fig. 5 is a rear view structural schematic diagram of the middle front end cover of the present invention;

fig. 6 is a schematic front view of the rear end cap according to the present invention;

fig. 7 is a rear view structural schematic diagram of the middle rear end cap of the present invention;

fig. 8 is a schematic side view of the housing of the present invention;

fig. 9 is a schematic front view of the housing of the present invention;

fig. 10 is a rear view of the housing of the present invention;

fig. 11 is a schematic front view of the middle and rear covers of the utility model;

fig. 12 is a schematic structural view of the utility model;

fig. 13 is a schematic structural view of the front stator assembly of the utility model;

figure 14 is a schematic structural view of the rear stator assembly of the utility model;

fig. 15 is a schematic structural view of a front adapter plate in the utility model;

fig. 16 is a schematic structural view of the middle-rear adapter plate of the utility model.

In the figure: 1. a rotating shaft; 2. a front stator assembly; 3. a rear stator assembly; 4. a rotor assembly; 5. a housing; 6. a front end cap; 7. A rear end cap; 8. a rear cover; 9. a front adapter plate; 10. a rear adapter plate; 11. a front bearing; 12. a rear bearing; 13. an encoder; 14. A cable connector; 101. a step portion; 102. chamfering the plane; 201. a front stator core; 202. a front stator winding; 301. a rear stator core; 302. a rear stator winding; 401. a rotor disk; 402. a chuck; 403. a permanent magnet; 501. an annular boss; 502. an air gap viewing aperture; 503. a plug; 504. a fifth threaded hole; 505. a sixth threaded hole; 601. a first seal ring; 602. a first countersunk through hole; 603. a first threaded hole; 604. a second threaded hole; 605. a recess; 701. a second seal ring; 702. a second countersunk through hole; 703. a third threaded hole; 704. a fourth threaded hole; 705. a rib plate; 801. a third seal ring; 802. a third countersunk through hole; 901. a first opening; 1001. and a second opening.

Detailed Description

The technical solution of the present invention is further specifically described below by using specific embodiments and with reference to the accompanying drawings. It is to be understood that the practice of the present invention is not limited to the following examples, and that any modifications and/or changes in form made to the present invention are intended to fall within the scope of the present invention.

In the present invention, unless otherwise specified, all parts and percentages are by weight, and the equipment and raw materials used may be commercially available or commonly used in the art. The methods in the following examples are conventional in the art unless otherwise specified. Unless otherwise indicated, the components or devices in the following examples are all common standard components or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or through routine experimentation.

In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the invention. However, one or more embodiments may be practiced without these specific details by one of ordinary skill in the art.

An axial permanent magnet machine as shown in figures 1 and 2 comprises a housing, a shaft 1, a front stator assembly 2, a rear stator assembly 3 and a rotor assembly 4. The housing is provided with an inner cavity, the rotating shaft 1 is movably connected with the housing, one end of the rotating shaft 1 is positioned outside the housing, and the other end of the rotating shaft 1 is positioned in the inner cavity of the housing. The front stator component 2 is arranged in the inner cavity of the housing, and the front stator component 2 is fixedly connected with the front end of the housing. The back stator module 3 is arranged in the inner cavity of the housing, and the back stator module 3 is fixedly connected with the rear end of the housing.

Rotor subassembly 4 locates the housing inner chamber and is located between stator subassembly 2 and the back stator subassembly 3, as shown in fig. 3, rotor subassembly 4 includes rotor disc 401, chuck 402 and a plurality of permanent magnet 403, chuck 402 middle part and pivot 1 fixed connection, chuck 402 and rotor disc 401 fixed connection and coaxial setting, chuck 402 is equipped with a plurality of positioning card grooves along chuck 402 circumference evenly distributed, positioning card groove's quantity is the same with the quantity of permanent magnet 403, positioning card groove's cell wall profile matches in permanent magnet 403's bottom end profile, permanent magnet 403 and rotor disc 401 and the equal fixed connection of chuck 402.

Specifically, the housing comprises a shell 5, a front end cover 6 and a rear end cover 7, wherein the shell 5 is hollow and has two open ends, and the front end cover 6 and the rear end cover 7 are respectively arranged at two ends of the shell 5 and are respectively fixedly connected with the end parts of the two ends of the shell 5. A first seal ring 601 is arranged at the part where the front end cover 6 is connected with the end part of the shell 5, and a second seal ring 701 is arranged at the part where the rear end cover 7 is connected with the end part of the shell 5. The rotating shaft 1 is respectively movably connected with the front end cover 6 and the rear end cover 7, and one end of the rotating shaft 1 penetrates through the middle part of the front end cover 6 and is exposed out of the housing. The sealing performance and reliability of the axial permanent magnet motor are improved through the first sealing ring 601 and the second sealing ring 701. The first seal ring 601 and the second seal ring 701 are both O-rings.

As shown in fig. 4 and 5, the front end cover 6 is provided with twelve first countersunk through holes 602 for mounting screws for connecting with the housing 5, six first threaded holes 603 are further provided on the front end cover 6 at positions adjacent to the first countersunk through holes 602 for mounting the front adapter plate 9 described later, six second threaded holes 604 are provided on the front end cover 6 at positions adjacent to the middle part for mounting the pressure plate of the front bearing 11 described later, and a notch 605 is provided at an opening at the middle part of the front end cover 6 for mounting the front bearing 11 described later.

As shown in fig. 6 and 7, the rear end cap 7 is provided with twelve second countersunk through holes 702 for mounting screws for connecting the housing 5, six third threaded holes 703 are further provided on the rear end cap 7 at positions adjacent to the second countersunk through holes 702 for mounting a rear adapter plate 10 described later, four fourth threaded holes 704 are provided on the rear end cap 7 at positions adjacent to the middle part for mounting a rear cover 8 described later, and a plurality of ribs 705 are processed on the surface of the rear end cap 7, so that the strength of the rear end cap 7 is improved and the heat dissipation effect is enhanced.

In order to enhance the heat dissipation performance of the casing 5, as shown in fig. 8, the casing 5 is provided with a plurality of annular protrusions 501 protruding from the surface of the casing 5, the annular protrusions 501 are distributed on the surface of the casing 5 along the central axis direction of the casing 5, the surface of the casing 5 is further provided with an air gap observation hole 502 and a plug 503, and the plug 503 is embedded in the air gap observation hole 502.

As shown in fig. 9 and 10, the front end of the housing 5 is provided with twelve fifth threaded holes 504, each fifth threaded hole 504 corresponds to a first countersunk through hole 602 of the front end cap 6, the rear end of the housing 5 is provided with twelve sixth threaded holes 505, and each sixth threaded hole 505 corresponds to a second countersunk through hole 702 of the rear end cap 7.

The housing further comprises a rear cover 8, the rear cover 8 is fixedly connected with the rear end part of the rear end cover 7, and a third sealing ring 801 is arranged at the connecting part of the rear cover 8 and the rear end part of the rear end cover 7. The sealing performance and reliability of the axial permanent magnet motor are further increased by the third sealing ring 801.

As shown in fig. 11, the rear cover 8 is provided with four third countersunk through holes 802, and each third countersunk through hole 802 corresponds to one fourth threaded hole 704 of the rear end cap 7.

As shown in fig. 12, the surface of the rotating shaft 1 is provided with a plurality of step parts 101, the surface of one step part 101 is provided with four chamfer planes 102 uniformly distributed along the circumferential direction of the surface of the step part 101, the middle part of the chuck 402 is provided with a mounting hole, and the hole wall profile of the mounting hole matches with the circumferential surface profile of the step part 101 with the chamfer planes 102. When the shaft 1 is rotated by the chamfer surface 102, the relative position between the chuck 402 and the shaft 1 is kept fixed. Of course, the number of chamfer planes 102 can also be adjusted according to the actual application.

As shown in fig. 13, the front stator assembly 2 includes a front stator core 201 and front stator windings 202, and the front stator windings 202 are circumferentially distributed on the surface of the front stator core 201 along the front stator core 201.

As shown in fig. 14, the rear stator assembly 3 includes a rear stator core 301 and rear stator windings 302, and the rear stator windings 302 are circumferentially distributed on the surface of the rear stator core 301 along the rear stator core 301.

The front stator assembly 2 and the rear stator assembly 3 are symmetrically disposed centering on the rotor assembly 4.

The axial permanent magnet motor further comprises a front adapter plate 9 and a rear adapter plate 10, the front adapter plate 9 is arranged in an inner cavity of the housing and fixedly connected with the front end cover 6, the front adapter plate 9 is fixedly connected with the front stator assembly 2, as shown in fig. 15, a first opening 901 is formed in the middle of the front adapter plate 9, the hole wall of the first opening 901 is in clearance fit with the rotating shaft 1, the rear adapter plate 10 is arranged in the inner cavity of the housing and fixedly connected with the rear end cover 7, the rear adapter plate 10 is fixedly connected with the rear stator assembly 3, as shown in fig. 16, a second opening 1001 is formed in the middle of the rear adapter plate 10, and the rotating shaft 1 penetrates through the second opening 1001 and is movably connected with the rear adapter plate 10.

This axial permanent-magnet machine still includes front bearing 11 and

rear bearing

12, and 11 outer walls of front bearing are connected with 6 middle parts of front end housing, and 11 inner walls of front bearing are connected with

pivot

1, and 11 lateral parts butt front bearing 11 clamp plates of front bearing to between front bearing 11 is fixed in front end housing 6 and the 11 clamp plates of front bearing, rear bearing 12 outer walls is connected with back keysets 10, and rear bearing 12 inner walls is connected with pivot 1.

The axial permanent magnet motor further comprises an encoder 13 and a cable connector 14, the encoder 13 is fixedly connected with the end part, located in the inner cavity of the housing, of the rotating shaft 1, and the cable connector 14 is arranged on the outer wall of the housing.

By arranging the chuck 402, when the permanent magnet 403 is installed on the rotor disc 401, the installation position of the permanent magnet 403 can be accurately positioned by means of the positioning clamping groove, so that the installation precision is greatly improved, and when the axial permanent magnet motor operates, the safety and the reliability of the operation of the motor are also improved by limiting the permanent magnet 403 by the positioning clamping groove.

The sealing performance and reliability of the axial permanent magnet motor are improved through the first sealing ring 601, the second sealing ring 701 and the third sealing ring 801 in the front end cover 6, the rear end cover 7 and the rear cover 8.

The heat dissipation performance of the axial permanent magnet motor is improved through the annular bulge 501 of the shell 5 and the rib plate 705 of the rear end cover 7, and the working time of the motor is prolonged.

By adopting the structural mode of two stator assemblies and one rotor assembly 4, a double-sided air gap is formed, the air gaps on the two sides of the rotor assembly 4 are the same, and the magnetic tension of the stator assemblies on the two sides can be balanced.

The axial permanent magnet motor is compact in structure, small in axial size and small in occupied space.

The installation process of the axial permanent magnet motor is as follows:

firstly, mounting a second sealing ring 701 on a rear end cover 7, connecting the rear end cover 7 with a shell 5, fixedly connecting a rear adapter plate 10 with the rear end cover 7, and fixedly connecting a rear stator assembly 3 with the rear adapter plate 10 to obtain a first assembly body;

then, pressing the front bearing 11 into the front end cover 6, installing a pressing plate of the front bearing 11, enabling the front bearing 11 to be installed between the pressing plate of the front bearing 11 and the front end cover 6, then fixedly connecting the front stator assembly 2 and the front adapter plate 9, fixedly connecting the front stator assembly and the front adapter plate on the front end cover 6, and installing a first sealing ring 601 on the front end cover 6 to obtain a second assembly body;

then, mounting a permanent magnet 403 on a chuck 402 and a rotor disc 401, coating a protective layer, finishing the appearance, fixedly connecting the permanent magnet with the rotating shaft 1, press-fitting a rear bearing 12 on the rotating shaft 1, and press-fitting the front end of the rotating shaft 1 of the assembly with a front bearing 11 of a second assembly body to obtain a third assembly body;

finally, the third assembly body and the first assembly body are installed, an air gap is observed through the air gap observation hole 502 of the shell 5, after the fact that installation is correct is confirmed, the third assembly body and the first assembly body are fastened, the air gap observation hole 502 is blocked by a plug 503, the encoder 13 is installed from the rear end of the rear end cover 7, the third sealing ring 801 is installed on the rear cover 8, the rear cover 8 and the rear end cover 7 are fixedly connected, and finally the cable connector 14 is installed on the surface of the rear end cover 7, so that the axial permanent magnet motor is obtained.

The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. An axial permanent-magnet machine which characterized in that: this axial permanent-magnet machine includes:

a housing having an interior cavity;

the rotating shaft (1) is movably connected with the housing, one end of the rotating shaft (1) is positioned outside the housing, and the other end of the rotating shaft (1) is positioned in an inner cavity of the housing;

the front stator assembly (2) is arranged in the inner cavity of the housing, the front stator assembly (2) is fixedly connected with the front end of the housing, and the middle part of the front stator assembly (2) is provided with a groove;

the rear stator component (3) is arranged in the inner cavity of the housing, and the rear stator component (3) is fixedly connected with the rear end of the housing;

rotor subassembly (4), rotor subassembly (4) are located the housing inner chamber and are located between preceding stator subassembly (2) and back stator subassembly (3), and rotor subassembly (4) are including rotor dish (401), chuck (402) and a plurality of permanent magnet (403), chuck (402) middle part with pivot (1) fixed connection, chuck (402) with rotor dish (401) fixed connection and with the axle center setting, chuck (402) are equipped with a plurality of positioning slot grooves along chuck (402) circumference evenly distributed, positioning slot groove's quantity with the quantity of permanent magnet (403) is the same, and positioning slot groove's cell wall profile matches in the bottom end portion profile of permanent magnet (403), permanent magnet (403) and rotor dish (401) and the equal fixed connection of chuck (402).

2. The axial permanent magnet motor of claim 1, wherein: the housing comprises a shell (5), a front end cover (6) and a rear end cover (7), wherein the shell (5) is hollow, two ends of the shell are open, the front end cover (6) and the rear end cover (7) are respectively arranged at two ends of the shell (5) and are respectively fixedly connected with end portions of two ends of the shell (5), a first sealing ring (601) is arranged at a position where the front end cover (6) is connected with the end portion of the shell (5), a second sealing ring (701) is arranged at a position where the rear end cover (7) is connected with the end portion of the shell (5), the rotating shaft (1) is respectively movably connected with the front end cover (6) and the rear end cover (7), and one end of the rotating shaft (1) penetrates through the middle portion of the front end cover (6) to be exposed outside the housing.

3. The axial permanent magnet motor of claim 2, wherein: casing (5) are equipped with a plurality of annular convex parts (501) of protrusion in casing (5) surface, annular convex part (501) distribute in casing (5) surface along casing (5) axis direction, and casing (5) surface still is equipped with air gap observation hole (502) and end cap (503), end cap (503) are inlayed and are located in air gap observation hole (502).

4. The axial permanent magnet motor of claim 2, wherein: the housing further comprises a rear cover (8), the rear cover (8) is fixedly connected with the rear end part of the rear end cover (7), and a third sealing ring (801) is arranged at the position where the rear end part of the rear cover (8) is connected with the rear end part of the rear end cover (7).

5. The axial permanent magnet motor of claim 1, wherein: the surface of the rotating shaft (1) is provided with a plurality of step parts (101), the surface of at least one step part (101) is provided with a plurality of chamfer planes (102) which are uniformly distributed along the circumferential direction of the surface of the step part (101), the middle part of the chuck (402) is provided with a mounting hole, and the hole wall profile of the mounting hole is matched with the circumferential surface profile of the step part (101) of the chamfer plane (102).

6. The axial permanent magnet motor of claim 1, wherein: the front stator assembly (2) comprises a front stator core (201) and front stator windings (202), wherein the front stator windings (202) are circumferentially distributed on the surface of the front stator core (201) along the front stator core (201).

7. The axial permanent magnet motor of claim 1, wherein: the rear stator assembly (3) comprises a rear stator core (301) and rear stator windings (302), and the rear stator windings (302) are circumferentially distributed on the surface of the rear stator core (301) along the rear stator core (301).

8. The axial permanent magnet motor of claim 2, wherein: the axial permanent magnet motor further comprises a front adapter plate (9) and a rear adapter plate (10), wherein the front adapter plate (9) is arranged in an inner cavity of the housing and fixedly connected with the front end cover (6), the front adapter plate (9) is fixedly connected with the front stator assembly (2), a first opening (901) is formed in the middle of the front adapter plate (9), the hole wall of the first opening (901) is in clearance fit with the rotating shaft (1), the rear adapter plate (10) is arranged in the inner cavity of the housing and fixedly connected with the rear end cover (7), the rear adapter plate (10) is fixedly connected with the rear stator assembly (3), a second opening (1001) is formed in the middle of the rear adapter plate (10), and the rotating shaft (1) penetrates through the second opening (1001) and is movably connected with the rear adapter plate (10).

9. The axial permanent magnet motor of claim 8, wherein: the axial permanent magnet motor further comprises a front bearing (11) and a rear bearing (12), wherein the outer wall of the front bearing (11) is connected with the middle of the front end cover (6), the inner wall of the front bearing (11) is connected with the rotating shaft (1), the outer wall of the rear bearing (12) is connected with the rear adapter plate (10), and the inner wall of the rear bearing (12) is connected with the rotating shaft (1).

10. The axial permanent magnet motor of claim 1, wherein: the axial permanent magnet motor further comprises an encoder (13) and a cable connector (14), wherein the encoder (13) is fixedly connected with the end part of the rotating shaft (1) positioned in the inner cavity of the housing, and the cable connector (14) is arranged on the outer wall of the housing.