Magnetic pushing mechanism and rotor assembling device

Abstract

The utility model belongs to the technical field of motor rotor manufacturing, and discloses a magnet pushing mechanism and a rotor assembling device. The rotor assembling device comprises a magnet pushing mechanism, the magnet pushing mechanism comprises a carrying table and a plurality of magnet pushing assemblies, the magnet pushing assemblies are arranged on the carrying table and evenly distributed in the circumferential direction of the carrying table at intervals, a containing space is defined by the magnet pushing assemblies, and the containing space is used for containing a plurality of pieces of magnetic steel assembled into a ring. The magnet pushing assembly is used for pushing the magnetic steel inwards by a preset distance in the radial direction. According to the magnetic pushing mechanism provided by the utility model, the magnetic steel can be prevented from being attached to the wall edge of the outer annular wall in the subsequent process of mounting the magnetic steel on the back iron, the risk of damage to the magnetic steel is reduced, and compared with the magnetic steel which is directly attached to the inner side wall of the outer annular wall when the magnetic steel is mounted on the back iron, the magnetic pushing mechanism is more convenient to mount. And the difficulty that the magnetic steel needs to be accurately fixed at a correct position during assembly is also reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of motor rotor manufacturing, in particular to a magnetic pushing mechanism and a rotor assembly device. Background Art

[0002] Axial magnetic field motors, also known as disk motors, have the advantages of small axial dimensions, high torque density, high power density, and high efficiency, and are widely used in fields such as electric vehicles, general industry, and household appliances.

[0003] As Figure 1 shown, from the perspective of the current structure of the disk motor rotor, the rotor 100 includes a back iron 101, a magnet 102, and a pressing plate 103. The magnets 102 and the pressing plates 103 are alternately arranged on the back iron 101 to form an annular structure. The outer periphery of the back iron 101 has a protruding outer annular wall 104. In actual products, the radial outer side wall of the magnet 102 needs to abut against the inner side wall of the outer annular wall 104 to provide support for the magnet 102 in the working state of the high-speed rotation of the rotor.

[0004] In the prior art, during assembly, multiple magnets 102 are pre-assembled into a ring according to their position states in actual products and placed on a carrier, and then the multiple magnets 102 are taken off the carrier in this position state and directly placed on the corresponding positions of the back iron 101. Then, a pressing plate 103 is placed between two adjacent magnets 102, and each pressing plate 103 is fixed to the back iron 101 by screws to form the rotor 100 as Figure 1 shown. Due to reasons such as position accuracy control errors, the outer diameter size of the pre-assembled ring of magnets 102 may slightly exceed the outer annular wall 104, and the magnets 102 are fragile. If these magnets 102 are directly placed on the back iron 101 in the above manner, the magnets 102 will be directly pressed down and abut against the edge of the outer annular wall 104. Therefore, the magnets 102 will be broken or damaged due to excessive mechanical stress.

[0005] Therefore, there is an urgent need to provide a magnetic pushing mechanism and a rotor assembly device to solve the above problems. Summary of the Utility Model

[0006] One object of the utility model is to provide a magnetic pushing mechanism, which can solve the technical problem that the magnet is broken or damaged due to abutting against the edge of the outer annular wall when the magnet is pressed down.

[0007] Another object of the utility model is to provide a rotor assembly device, which can solve the technical problem that the magnet is broken or damaged due to abutting against the edge of the outer annular wall when the magnet is pressed down.

[0008] To achieve this purpose, the utility model adopts the following technical solutions:

[0009] Magnetic pushing mechanism, comprising:

[0010] A carrier; and

[0011] A plurality of magnetic pushing components, arranged on the carrier at equal intervals along the circumferential direction of the carrier. The plurality of magnetic pushing components enclose an accommodation space for accommodating a plurality of magnetic steels assembled into a ring. The magnetic pushing components are used to push the magnetic steels radially inward by a preset distance.

[0012] As an alternative solution, the magnetic pushing component includes a magnetic pushing driving member and a pushing head. The magnetic pushing driving member is fixed on the carrier, and the pushing head is connected to the output end of the magnetic pushing driving member. The magnetic pushing driving member can drive the pushing head to move radially along the magnetic steel, so that the pushing head pushes the magnetic steel radially inward by a preset distance.

[0013] As an alternative solution, the pushing head includes a connecting portion and a magnetic pushing convex portion. The connecting portion is connected to the output end of the magnetic pushing driving member. The magnetic pushing convex portion is arranged on the upper side of the connecting portion and faces the outer peripheral side of the magnetic steel. The magnetic pushing convex portion protrudes from the connecting portion in the direction close to the magnetic steel, and the width of the magnetic pushing convex portion is adapted to the width of the outer peripheral side of a single magnetic steel.

[0014] As an alternative solution, an avoidance groove is formed on the upper side of the magnetic pushing convex portion.

[0015] As an alternative solution, the pushing head is made of a magnetic isolation material.

[0016] As an alternative solution, the magnetic pushing driving member is a cylinder.

[0017] As an alternative solution, the carrier includes a fixed table and a rotating table. The rotating table is arranged on the upper side of the fixed table and can rotate circumferentially relative to the fixed table. The magnetic pushing components are arranged on the rotating table.

[0018] As an alternative solution, it further includes a rotation driving component for driving the circumferential rotation of the rotating table. The rotation driving component includes:

[0019] A motor, fixedly connected to the bottom side of the fixed table;

[0020] A first pulley and a second pulley, arranged at intervals in the horizontal direction. The first pulley is connected to the output shaft of the motor, and the second pulley is connected to the rotating table;

[0021] A synchronous belt, wound around the outer peripheries of the first pulley and the second pulley, and jointly tensioned by the first pulley and the second pulley.

[0022] As an alternative solution, a plurality of limiting members are provided on the fixed table. The plurality of limiting members are arranged at intervals along the circumferential direction of the rotating table on the outer peripheral side of the rotating table. The limiting member includes a vertical portion and a horizontal limiting portion. The horizontal limiting portion is vertically connected to the top end of the vertical portion to form a limiting groove. The side of the rotating table is received in the limiting groove, and the surface of the rotating table can abut against the bottom surface of the horizontal limiting portion.

[0023] The rotor assembly device includes the above-mentioned magnetic pushing mechanism.

[0024] Advantages of the present utility model:

[0025] The present utility model provides a magnetic pushing mechanism. When in use, first place a plurality of magnetic steels pre-assembled into a ring according to their position states in the actual product in the accommodating space surrounded by a plurality of magnetic pushing components. Then, the plurality of magnetic pushing components act simultaneously to push the plurality of magnetic steels radially inward by a preset distance, that is, to make all the magnetic steels contract inward. This preset distance can ensure that after all the magnetic steels contract, the outer diameter of the annular body composed of the plurality of magnetic steels is smaller than the inner diameter of the outer annular wall, which can avoid the magnetic steels abutting against the edge of the outer annular wall during the subsequent installation of the magnetic steels onto the back iron, reduce the risk of damage to the magnetic steels, and compared with directly abutting against the inner side wall of the outer annular wall when the magnetic steels are installed onto the back iron, it also reduces the difficulty of accurately fixing the magnetic steels in the correct position during the assembly of the magnetic steels.

[0026] The present utility model further provides a rotor assembly device. By providing the above-mentioned magnetic pushing mechanism, the risk of damage to the magnetic steels during the subsequent installation of the magnetic steels onto the back iron can be reduced. Description of the Drawings

[0027] Figure 1 is a schematic structural view of a rotor provided by the present utility model;

[0028] Figure 2 is a schematic structural view of the magnetic pushing mechanism provided by the present utility model Figure 1 ;

[0029] Figure 3 is Figure 2 a partial enlarged view of part A in

[0030] Figure 4 is a schematic structural view of the magnetic pushing mechanism provided by the present utility model Figure 2 ;

[0031] Figure 5 is a front view of the magnetic pushing mechanism provided by the present utility model.

[0032] In the figure:

[0033] 100, rotor; 101, back iron; 102, magnetic steel; 103, pressing plate; 104, outer annular wall;

[0034] 10. Magnetic pushing mechanism; 11. Carrier table; 111. Fixed table; 112. Rotating table; 113. Support rod; 12. Magnetic pushing assembly; 121. Magnetic pushing driving member; 122. Pushing head; 1221. Connecting portion; 1222. Magnetic pushing convex portion; 1223. Avoidance groove; 13. Accommodating space; 14. Rotating driving assembly; 141. Motor; 142. First pulley; 143. Second pulley; 144. Synchronous belt; 15. Limiting member; 151. Vertical portion; 152. Horizontal limiting portion; 153. Limiting groove. Detailed implementation manners

[0035] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the convenience of description, only parts related to the present utility model rather than all structures are shown in the drawings.

[0036] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0037] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "above the top", and "on the top" of the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below the bottom", and "under the bottom" of the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is lower than that of the second feature.

[0038] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and do not have special meanings.

[0039] Axial magnetic field motors, also known as disk motors, have the advantages of small axial dimensions, high torque density, high power density, and high efficiency, and are widely used in fields such as electric vehicles, general industry, and household appliances. As Figure 1 shown, the rotor 100 of the disk motor includes a back iron 101, a permanent magnet 102, and a pressing plate 103. The permanent magnets 102 and the pressing plates 103 are alternately arranged on the back iron 101 to form an annular structure. The outer periphery of the back iron 101 has a protruding outer annular wall 104. In actual products, the radial outer side wall of the permanent magnet 102 needs to abut against the inner side wall of the outer annular wall 104 to provide support for the permanent magnet 102 in the working state when the rotor 100 rotates at a high speed.

[0040] In the prior art, during assembly, multiple permanent magnets 102 are pre-assembled into a ring according to their position states in actual products and placed on a carrier, and then the multiple permanent magnets 102 are removed from the carrier in this position state and directly placed in the correct positions on the back iron 101. Then, a pressing plate 103 is placed between two adjacent permanent magnets 102, and each pressing plate 103 is fixed to the back iron 101 by screws to form the rotor 100 as Figure 1 shown. Due to reasons such as position accuracy control errors, the outer diameter size of the pre-assembled ring of permanent magnets 102 may slightly exceed the outer annular wall 104, and the permanent magnets 102 are fragile. If these permanent magnets 102 are directly placed on the back iron 101 in the above manner, the direct downward pressure of the permanent magnets 102 will abut against the edge of the outer annular wall 104, so the permanent magnets 102 will be damaged or broken due to excessive mechanical stress.

[0041] To solve the above problems, as Figure 2 shown, this embodiment provides a magnetic pushing mechanism 10. The magnetic pushing mechanism 10 includes a carrier 11 and a plurality of magnetic pushing components 12. The plurality of magnetic pushing components 12 are arranged on the carrier 11 and are evenly spaced along the circumferential direction of the carrier 11. The plurality of magnetic pushing components 12 enclose a receiving space 13, and the receiving space 13 is used to receive the pre-assembled ring of multiple permanent magnets 102. The magnetic pushing components 12 are used to push the permanent magnets 102 radially inward by a preset distance. Among them, the number of the magnetic pushing components 12 is not specifically limited here and can be adaptively set according to the specific number of the permanent magnets 102.

[0042] During use, first place multiple magnets 102 that are pre-assembled into a ring according to their position states in the actual product within the accommodation space 13 enclosed by multiple magnetic pushing components 12. Then, the multiple magnetic pushing components 12 act simultaneously to push the multiple magnets 102 radially inward by a preset distance, that is, to make all the magnets 102 contract inward. This preset distance can ensure that after all the magnets 102 contract, the outer diameter of the ring formed by the multiple magnets 102 is smaller than the inner diameter of the outer annular wall 104, avoiding the magnets 102 from abutting against the edge of the outer annular wall 104 during the subsequent process of installing the magnets 102 onto the back iron 101, reducing the risk of damage to the magnets 102. And compared with directly abutting against the inner side wall of the outer annular wall 104 when the magnets 102 are installed onto the back iron 101, it also reduces the difficulty of accurately fixing the magnets 102 in the correct position during assembly of the magnets 102.

[0043] It should be noted that the magnetic pushing mechanism 10 can be used in conjunction with a magnet transfer mechanism. Multiple magnets 102 will be pre-assembled into a ring according to their position states in the actual product and placed on a carrier. The magnet transfer mechanism is used to transfer the multiple magnets 102 from the carrier to the accommodation space 13 of the magnetic pushing mechanism 10. Among them, the magnet transfer mechanism can be a magnetic chuck fixed at the end of a robotic arm, or a magnetic chuck fixed at the output end of a two-axis moving module, as long as it can achieve the lifting and moving of the magnetic chuck and the horizontal movement between different workstations. The magnetic chuck can magnetically attract multiple magnets 102 assembled into a ring at one time. During the magnetic pushing process, the magnet transfer mechanism always stays above the magnetic pushing mechanism 10, and the magnetic chuck always maintains the state of attracting the magnets 102, so that the multiple magnets 102 are in a suspended state within the accommodation space 13. After the magnetic pushing is completed, the magnet transfer mechanism drives the pushed magnets 102 to be transferred to the back iron workstation. At the back iron workstation, the back iron 101 is fixed through a corresponding carrier, and then the magnet transfer mechanism places the multiple magnets 102 into the back iron 101. At this time, there is a certain distance between the radial outer side wall of each magnet 102 and the inner side wall of the outer annular wall 104. Finally, push each magnet 102 radially outward so that the radial outer side wall of each magnet 102 abuts against the inner side wall of the outer annular wall 104. At this time, the operation of installing the magnets 102 into the back iron 101 is completed.

[0044] Specifically, as Figure 2As shown in the figure, the magnetic pushing assembly 12 includes a magnetic pushing driving member 121 and a pushing head 122. The magnetic pushing driving member 121 is fixed on the carrier 11, and the pushing head 122 is connected to the output end of the magnetic pushing driving member 121. The magnetic pushing driving member 121 can drive the pushing head 122 to move radially along the magnetic steel 102, so that the pushing head 122 pushes the magnetic steel 102 radially inward by a preset distance. A plurality of magnetic pushing driving members 121 are arranged in a circumferential array on the carrier 11. When the magnetic steel transfer mechanism moves the magnetic steel 102 downward into the accommodation space 13, the radial outer side wall of the magnetic steel 102 is aligned with the pushing head 122. Under the driving action of the corresponding magnetic pushing driving member 121, a plurality of pushing heads 122 are simultaneously pushed out to push each magnetic steel 102 into place. By providing the above magnetic pushing assembly 12, automatic magnetic pushing can be realized, and the magnetic pushing efficiency can be improved.

[0045] In an alternative embodiment, as Figure 2 shown, the magnetic pushing driving member 121 is a cylinder. The cylinder has a simple structure, is easy to install and maintain, has a stable movement, a fast response speed, and can realize a stable magnetic pushing effect.

[0046] Furthermore, the pushing head 122 is made of a magnetic isolation material, such as plastic or other metals with a magnetic isolation effect. With this setting, it can be avoided that when the pushing head 122 pushes the magnetic steel 102, a magnetic attraction effect is generated between the pushing head 122 and the magnetic steel 102, which affects the magnetic pushing operation.

[0047] In an alternative embodiment, as Figure 3 shown, the pushing head 122 includes a connecting portion 1221 and a magnetic pushing convex portion 1222. The connecting portion 1221 is connected to the output end of the magnetic pushing driving member 121. The magnetic pushing convex portion 1222 is arranged on the upper side of the connecting portion 1221 and is opposite to the outer peripheral side of the magnetic steel 102. The magnetic pushing convex portion 1222 protrudes from the connecting portion 1221 in the direction close to the magnetic steel 102, and the width of the magnetic pushing convex portion 1222 is adapted to the width of the outer peripheral side of a single magnetic steel 102, ensuring that only one magnetic pushing convex portion 1222 can be opposite to the outer peripheral side of one of the magnetic steels 102, and only one magnetic steel 102 can be pushed at a time. Among them, the cross-sectional dimension of the connecting portion 1221 is adapted to the cross-sectional dimension of the output end of the magnetic pushing driving member 121 to increase the contact area with the magnetic pushing driving member 121 and ensure stable and reliable connection.

[0048] In an alternative embodiment, as Figure 3 shown, an avoidance groove 1223 is formed on the upper side of the magnetic pushing convex portion 1222. When the magnetic steel transfer mechanism moves the magnetic steel 102 downward into the accommodation space 13, after the magnetic pushing convex portion 1222 protrudes, the avoidance groove 1223 is used to avoid the edge of the magnetic steel transfer mechanism located above the magnetic pushing convex portion 1222.

[0049] In an alternative embodiment, in combination with Figure 2 and Figure 4, the carrier 11 includes a fixed platform 111 and a rotating platform 112. The rotating platform 112 is disposed on the upper side of the fixed platform 111 and can rotate circumferentially relative to the fixed platform 111. The magnetic pushing assembly 12 is disposed on the rotating platform 112. It can be understood that the number of magnetic steel 102 is relatively large, but due to space limitations, it is difficult to arrange a sufficient number of corresponding magnetic pushing driving members 121 in a limited space. Therefore, by providing the rotating platform 112, after a part of the magnetic steel 102 is pushed by multiple magnetic pushing assemblies 12, the rotating platform 112 drives the magnetic pushing assembly 12 to rotate a certain angle, and then another part of the magnetic steel 102 is pushed until all the magnetic steel 102 have completed the magnetic pushing process.

[0050] Exemplarily, in an alternative embodiment, referring to Figure 2 , the magnetic pushing assembly 12 can be provided with eight. The eight magnetic pushing assemblies 12 are evenly spaced along the circumferential direction of the rotating platform 112. The magnetic steel 102 can be provided with sixteen. The sixteen magnetic steel 102 are pre-assembled into a ring as shown in Figure 2 . The distance between two adjacent magnetic pushing assemblies 12 is the distance of one magnetic steel 102. The eight magnetic pushing assemblies 12 can act simultaneously to first push eight magnetic steel 102, and then the rotating platform 112 drives the magnetic pushing assembly 12 to rotate approximately 45°, and then another eight magnetic steel 102 are pushed. Among them, the number of the magnetic pushing assembly 12 and the magnetic steel 102 is not limited to the above numbers, and can also be set to other numbers according to actual needs, and no specific limitation is made here.

[0051] Furthermore, as shown in Figure 4 , the magnetic pushing mechanism 10 further includes a rotation driving assembly 14 for driving the circumferential rotation of the rotating platform 112. Specifically, the rotation driving assembly 14 includes a motor 141, a first pulley 142, a second pulley 143, and a synchronous belt 144. The motor 141 is fixedly connected to the bottom side of the fixed platform 111. The first pulley 142 and the second pulley 143 are arranged at intervals in the horizontal direction. The first pulley 142 is connected to the output shaft of the motor 141, the second pulley 143 is connected to the rotating platform 112, and the synchronous belt 144 is wound around the outer circumferences of the first pulley 142 and the second pulley 143 and is jointly tensioned by the first pulley 142 and the second pulley 143. The motor 141 drives the first pulley 142 to rotate. Under the tensioning action of the synchronous belt 144, the second pulley 143 is driven to rotate. The second pulley 143 drives the rotating platform 112 to rotate, and the rotating platform 112 drives the magnetic pushing assembly 12 to rotate a certain angle to complete the magnetic pushing operation of all the magnetic steel 102. By adopting the rotation driving assembly 14 in the above form, the rotation angle of the rotating platform 112 can be accurately controlled, the transmission ratio is accurate, there is no slippage, the transmission efficiency is high, the structure is compact, and the noise is small.

[0052] As shown in Figure 4As shown, support rods 113 are respectively fixed at the four bottom corners of the fixed table 111. The bottom ends of the support rods 113 can be fixed on the workbench, thus facilitating the overall arrangement of the magnetic pushing mechanism 10 on the workbench.

[0053] In an alternative embodiment, as Figure 2 and Figure 5 shown, a plurality of limiting members 15 are provided on the fixed table 111. The plurality of limiting members 15 are arranged at intervals along the circumferential direction of the rotating table 112 on the outer peripheral side of the rotating table 112. The limiting member 15 includes a vertical portion 151 and a horizontal limiting portion 152. The horizontal limiting portion 152 is vertically connected to the top end of the vertical portion 151 to form a limiting groove 153. The side of the rotating table 112 is received in the limiting groove 153, and the surface of the rotating table 112 can abut against the bottom surface of the horizontal limiting portion 152. By providing a plurality of limiting members 15, the rotating table 112 can be held simultaneously, preventing the rotating table 112 from tilting during rotation and ensuring the accuracy of magnetic pushing.

[0054] Specifically, as Figure 5 shown, the rotating table 112 includes a three-layer plate structure arranged in a stacked manner from top to bottom and coaxially. The upper layer plate is used to fix the magnetic pushing assembly 12. The side of the lower layer plate is received in the limiting groove 153, and the upper surface of the lower layer plate can abut against the bottom surface of the horizontal limiting portion 152. The outer diameter of the middle layer plate is smaller than the outer diameter of the lower layer plate, thus reserving space for the horizontal limiting portion 152 of the limiting member 15.

[0055] This embodiment also provides a rotor assembly device, including the magnetic steel transfer mechanism, the magnetic pushing mechanism 10 and the back iron station mentioned above. The magnetic steel transfer mechanism is used to transfer a plurality of pre-assembled magnetic steels 102 from the carrier to the accommodation space 13 of the magnetic pushing mechanism 10. The magnetic pushing mechanism 10 is used to push a plurality of magnetic steels 102 radially inward by a preset distance. After magnetic pushing is completed, the magnetic steel transfer mechanism drives the pushed magnetic steels 102 to be transferred to the back iron station. The back iron 101 is fixed by the corresponding carrier. Then the magnetic steel transfer mechanism places a plurality of magnetic steels 102 in the back iron 101. At this time, there is a certain distance between the radial outer side wall of each magnetic steel 102 and the inner side wall of the outer annular wall 104. Finally, each magnetic steel 102 is pushed radially outward so that the radial outer side wall of each magnetic steel 102 abuts against the inner side wall of the outer annular wall 104. At this time, the operation of inserting the magnetic steel 102 into the back iron 101 is completed. Among them, the magnetic steel transfer mechanism and the back iron station are relatively common in the prior art and will not be elaborated here.

[0056] The rotor assembly device provided in this embodiment can, by providing the above-mentioned magnetic pushing mechanism 10, prevent the magnetic steel 102 from abutting against the edge of the outer annular wall 104 during the subsequent installation of the magnetic steel 102 onto the back iron 101, reducing the risk of damage to the magnetic steel 102. Moreover, compared with the case where the magnetic steel 102 directly abuts against the inner side wall of the outer annular wall 104 when being installed onto the back iron 101, it also reduces the difficulty of precisely fixing the magnetic steel 102 in the correct position during assembly.

[0057] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, various obvious changes, re-adjustments, and substitutions can be made without departing from the protection scope of the present utility model. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. A magnetic pushing mechanism, characterized in that: include: Carrier (11); as well as A plurality of push magnet assemblies (12) are arranged on the carrier (11), and the plurality of push magnet assemblies (12) are evenly spaced along the circumference of the carrier (11); the plurality of push magnet assemblies (12) enclose a receiving space (13); the receiving space (13) is used to receive a plurality of magnetic steels (102) assembled into a ring; the push magnet assemblies (12) are used to push the magnetic steels (102) radially inward by a preset distance.

2. The magnetic pushing mechanism according to claim 1, characterized in that: The push-magnet assembly (12) comprises a push-magnet driving component (121) and a pushing head (122); the push-magnet driving component (121) is fixed on the carrier (11); the pushing head (122) is connected to the output end of the push-magnet driving component (121); the push-magnet driving component (121) is capable of driving the pushing head (122) to move radially along the magnetic steel (102), so that the pushing head (122) pushes the magnetic steel (102) radially inward by a preset distance.

3. The magnetic pushing mechanism according to claim 2, characterized in that: The pushing head (122) comprises a connecting portion (1221) and a pushing magnet protrusion (1222), wherein the connecting portion (1221) is connected to the output end of the pushing magnet driving member (121), and the pushing magnet protrusion (1222) is arranged on the upper side of the connecting portion (1221) and directly opposite to the outer peripheral side of the magnetic steel (102), and the pushing magnet protrusion (1222) protrudes from the connecting portion (1221) in a direction close to the magnetic steel (102), and the width of the pushing magnet protrusion (1222) is adapted to the outer peripheral width of a single magnetic steel (102).

4. The magnetic pushing mechanism according to claim 3, characterized in that: An avoidance groove (1223) is provided on the upper side of the magnetic pushing protrusion (1222).

5. The magnetic pushing mechanism according to claim 2, characterized in that: The pushing head (122) is made of magnetic isolation material.

6. The magnetic pushing mechanism according to claim 2, characterized in that: The magnetic pushing driving component (121) is a cylinder.

7. The magnetic pushing mechanism according to any one of claims 1 to 6, characterized in that: The carrier (11) comprises a fixed platform (111) and a rotating platform (112); the rotating platform (112) is arranged on the upper side of the fixed platform (111) and can rotate circumferentially relative to the fixed platform (111); and the magnetic pushing component (12) is arranged on the rotating platform (112).

8. The magnetic pushing mechanism according to claim 7, characterized in that: The invention also comprises a rotation drive assembly (14) for driving the rotating platform (112) to rotate circumferentially, wherein the rotation drive assembly (14) comprises: A motor (141) is fixedly connected to the bottom side of the fixing platform (111); A first pulley (142) and a second pulley (143) are arranged at intervals in the horizontal direction, the first pulley (142) is connected to the output shaft of the motor (141), and the second pulley (143) is connected to the rotating platform (112); The synchronous belt (144) is wound around the outer circumference of the first belt pulley (142) and the second belt pulley (143), and is tensioned by the first belt pulley (142) and the second belt pulley (143).

9. The magnetic pushing mechanism according to claim 7, characterized in that: A plurality of limiting members (15) are arranged on the fixed platform (111), and the plurality of limiting members (15) are arranged at intervals on the outer peripheral side of the rotating platform (112) along the circumferential direction of the rotating platform (112), and the limiting member (15) comprises a vertical portion (151) and a horizontal limiting portion (152), and the horizontal limiting portion (152) is vertically connected to the top end of the vertical portion (151) to form a limiting groove (153), and the side edge of the rotating platform (112) is accommodated in the limiting groove (153), and the surface of the rotating platform (112) can abut against the bottom surface of the horizontal limiting portion (152).

10. A rotor assembly device, characterized in that: It comprises a magnetic pushing mechanism as described in any one of claims 1 to 9.

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