Halbach array magnetic ring assembling device

Abstract

The Halbach array magnetic ring assembling device comprises an assembling base, a positioning column and a locking assembly, and the assembling base is provided with an assembling hole and a plurality of receding grooves annularly distributed along the inner wall of the assembling hole at equal intervals; the positioning column is detachably and coaxially inserted into the assembling hole, an annular groove used for assembling the magnetic ring is formed between the positioning column and the inner wall of the assembling hole, the magnetic ring comprises a plurality of first magnetic shoes and a plurality of second magnetic shoes, and during assembling, the first magnetic shoes and the second magnetic shoes are alternately arranged in the annular groove in the circumferential direction; at least part of each of the plurality of second magnetic shoes is located in the corresponding abdicating groove; the locking assembly is installed on the assembling base and used for completely pushing the second magnetic shoes located in the receding grooves into the annular groove in the radial direction of the assembling base so that the multiple second magnetic shoes and the multiple first magnetic shoes can be jointly spliced into a complete magnetic ring. According to the utility model, each part of the magnetic ring can be accurately positioned and fixed, the operability and the convenience are good, and the assembly efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling fixtures, and in particular to a Halbach array magnetic ring assembly device. Background Art

[0002] Halbach array magnetic ring is a magnetic ring composed of multiple magnets with different magnetization directions arranged according to a specific rule. It is widely used due to its unique magnetic field characteristics.

[0003] However, due to the magnetic properties of the Halbach array magnetic ring itself, there will be interaction forces between the magnets during the assembly process, which makes the assembly process of the Halbach array magnetic ring face many challenges. The traditional assembly method that relies on manual bonding of magnets is often difficult to operate, and it is difficult to ensure the precise position and orientation of each part of the magnetic ring. It is easy to have inaccurate magnet position or magnet movement during assembly, resulting in unsatisfactory magnetic field performance of the final Halbach array magnetic ring. In order to solve these problems and improve the assembly efficiency and quality of the Halbach array magnetic ring, it is particularly important to develop a special and efficient Halbach array magnetic ring assembly device. Utility Model Content

[0004] The problem to be solved by the utility model is to provide a Halbach array magnetic ring assembly device to overcome the defects of the prior art that the assembly of the Halbach array magnetic ring is difficult to operate, it is difficult to ensure the precise position of each part of the magnetic ring and the efficiency is low.

[0005] The technical solution adopted by the utility model to solve the technical problem is: a Halbach array magnetic ring assembly device, comprising:

[0006] An assembly seat, wherein the assembly seat is provided with an assembly hole and a plurality of evacuation grooves distributed in an annular manner and at equal intervals along the inner wall of the assembly hole;

[0007] A positioning column is detachably coaxially inserted into the assembly hole, and an annular groove for assembling a magnetic ring is formed between the positioning column and the inner wall of the assembly hole, and the ring width of the annular groove is consistent with the ring width of the magnetic ring; wherein the magnetic ring comprises a plurality of first magnetic tiles and a plurality of second magnetic tiles, and when assembled, the plurality of first magnetic tiles and the plurality of second magnetic tiles are alternately arranged in the annular groove along the circumferential direction, and at least a portion of each of the plurality of second magnetic tiles is located in the corresponding giving way groove;

[0008] The locking assembly is installed on the assembly seat and is used to push the second magnetic tile in the clearance groove completely into the annular groove along the radial direction of the assembly seat, so that multiple second magnetic tiles and multiple first magnetic tiles are spliced ​​together to form a complete magnetic ring.

[0009] As a further improvement of the present utility model, the positioning post is provided with a central column body and a plurality of ribs annularly and equidistantly distributed along the outer circumference of the central column body. The diameter of the central column body is consistent with the inner diameter of the magnetic ring. The plurality of ribs equally divide the annular groove into a plurality of assembly spaces, and each assembly space can just accommodate at least one of the first magnetic tiles and at least one of the second magnetic tiles.

[0010] As a further improvement of the present utility model, the length of the rib is less than the length of the central column body, and the lower end of the rib extends to the middle part of the central column body.

[0011] As a further improvement of the present utility model, at least one limiting block is provided at the upper end of the positioning post. The limiting block is used to insert into the corresponding relief groove to limit the circumferential movement of the positioning post.

[0012] As a further improvement of the present utility model, a plurality of chutes annularly and equidistantly arranged on the outer circumference of the assembly seat and having the same number as and corresponding to the plurality of relief grooves are provided. A slidable block capable of sliding radially is installed in each of the plurality of chutes. The locking assembly pushes the second magnetic tile in the relief groove through the slidable block.

[0013] As a further improvement of the present utility model, the locking assembly includes a locking sleeve and a plurality of fasteners. The locking sleeve is sleeved on the top of the assembly seat. The plurality of fasteners are all installed radially on the locking sleeve and are connected to the plurality of slidable blocks in one-to-one correspondence. The fasteners are used to drive the slidable blocks to slide radially.

[0014] As a further improvement of the present utility model, the fastener includes a screw and a wing nut. The locking sleeve is provided with a screw hole matching the screw along the radial direction. The screw is threadedly connected to the screw hole, and the head of the screw is connected to the slidable block. The wing nut is fixed to the tail of the screw and is located outside the locking sleeve.

[0015] As a further improvement of the present utility model, a T-shaped groove is provided at one end of the slidable block. The head of the screw is inserted into the T-shaped groove. A push plate is provided at the other end of the slidable block, and the push plate extends into the relief groove.

[0016] As a further improvement of the present utility model, the Halbach array magnetic ring assembling device further includes a base. The base is installed at the bottom of the assembly seat. A positioning hole is provided on the base. A positioning table is provided at the lower end of the positioning post. The positioning table is inserted and matched with the positioning hole so that the positioning post is coaxially inserted into the assembly hole.

[0017] As a further improvement of the present invention, the Halbach array magnetic ring assembly device also includes an ejection seat, a ejection column is provided in the middle of the ejection seat, the assembly seat is located below the assembly hole and is provided with an ejection hole connected thereto, and the inner diameter of the ejection hole is between the inner diameter and the outer diameter of the magnetic ring, and the ejection column is used to be inserted into the ejection hole to eject the magnetic ring upward out of the assembly hole.

[0018] The beneficial effects of the utility model are as follows: the utility model provides a Halbach array magnetic ring assembly device, by providing an assembly hole and a clearance groove on an assembly seat, a positioning column is coaxially inserted in the assembly hole to form an annular groove for assembling the magnetic ring, during assembly, a plurality of first magnetic tiles and a plurality of second magnetic tiles are alternately arranged in the annular groove along the circumferential direction, and the outer ends of the second magnetic tiles are placed in the corresponding clearance grooves, and then the second magnetic tiles are completely pushed into the annular groove in the radial direction by relying on the locking assembly, and the second magnetic tiles are pressed, so that the plurality of second magnetic tiles and the plurality of first magnetic tiles are spliced ​​together into a complete magnetic ring, this assembly device can not only accurately locate and fix the various parts of the magnetic ring, ensure that the various parts of the magnetic ring are evenly arranged along the circumference, ensure that it is assembled according to the correct Halbach array structure, avoid uneven arrangement caused by cumulative errors, but also has good operability and convenience, and is easier to load the first magnetic tile and the second magnetic tile, so as to reduce the working difficulty and labor intensity of the operator, and greatly improve the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the Halbach array magnetic ring assembly device of the utility model;

[0020] Figure 2 It is a cross-sectional view of the Halbach array magnetic ring assembly device of the utility model;

[0021] Figure 3 It is an exploded view of the Halbach array magnetic ring assembly device of the utility model;

[0022] Figure 4 This is a three-dimensional diagram of the Halbach array magnetic ring assembly device of the utility model after removing the locking sleeve and disassembling the locking component;

[0023] Figure 5 A three-dimensional diagram of the assembly seat of the utility model;

[0024] Figure 6 It is a three-dimensional diagram of the positioning column of the utility model;

[0025] Figure 7 It is a three-dimensional diagram of the positioning column and the first magnetic tile and the second magnetic tile of the utility model when they are assembled;

[0026] Figure 8 This is a schematic diagram of the step-by-step assembly structure of the magnetic ring of the utility model;

[0027] Figure 9 This is a three-dimensional view of the ejection seat disassembled from the Halbach array magnetic ring assembly device of the present utility model;

[0028] Figure 10 This is a three-dimensional view of the Halbach array magnetic ring assembly device of the present utility model using the ejection seat to eject the magnetic ring.

[0029] The following description is made with reference to the accompanying drawings:

[0030] 1. Assembly seat; 101. Assembly hole; 102. Relief groove; 103. Slide groove; 104. Ejection hole; 2. Positioning post; 201. Central column body; 202. Rib; 203. Limit block; 204. Positioning table; 3. Magnetic ring; 301. First magnetic tile; 302. Second magnetic tile; 4. Slide block; 401. T-shaped groove; 402. Pusher plate; 5. Locking sleeve; 501. Screw hole; 6. Screw; 7. Wing nut; 8. Base; 801. Positioning hole; 9. Ejection seat; 901. Ejection post. Specific embodiments

[0031] The following describes the preferred embodiments of the present utility model in detail with reference to the accompanying drawings.

[0032] Refer to Figures 1 to 10 , the present utility model provides a Halbach array magnetic ring assembly device, including: an assembly seat 1, a positioning post 2 and a locking assembly.

[0033] In this embodiment, the assembly seat 1 is cylindrical, the top of the assembly seat 1 is provided with an assembly hole 101 along the axis, and a plurality of relief grooves 102 are provided on the inner wall of the assembly seat 1 along the axis direction of the assembly hole 101, and the plurality of relief grooves 102 are evenly distributed at equal intervals in a ring shape.

[0034] The positioning post 2 is detachably inserted coaxially into the assembly hole 101, and an annular groove for assembling the magnetic ring 3 is formed between the positioning post 2 and the inner wall of the assembly hole 101, and the ring width of the annular groove is the same as the ring width of the magnetic ring 3.

[0035] Preferably, the annular groove and the relief groove 102 are both the same length as the magnetic ring 3.

[0036] Among them, the magnetic ring 3 includes a plurality of first magnetic tiles 301 and a plurality of second magnetic tiles 302, and the number of the plurality of second magnetic tiles 302 is the same as and corresponds to the number of the plurality of relief grooves 102 one by one. During assembly, the plurality of first magnetic tiles 301 and the plurality of second magnetic tiles 302 are alternately arranged in the circumferential direction and placed in the annular groove; among them, the plurality of first magnetic tiles 301 are all completely limited in the annular groove, while the outer ends of the plurality of second magnetic tiles 302 are located in the corresponding relief grooves 102, and the inner ends of the plurality of second magnetic tiles 302 are located in the annular groove. Since both the first magnetic tiles 301 and the second magnetic tiles 302 are fan-shaped, in this state, there will be a gap between the first magnetic tiles 301 and the second magnetic tiles 302. Therefore, the present utility model is more likely to install the first magnetic tiles 301 and the second magnetic tiles 302 into the annular groove by adopting this structure.

[0037] Furthermore, the locking assembly is installed on the assembly seat 1 and is used to completely push the second magnetic tiles 302 located in the relief grooves 102 into the annular groove along the radial direction of the assembly seat 1, so that the plurality of second magnetic tiles 302 and the plurality of first magnetic tiles 301 jointly form a complete magnetic ring 3.

[0038] In this embodiment, the plurality of first magnetic tiles 301 and the plurality of second magnetic tiles 302 can be fixed by gluing. During the assembly process, glue can be applied in advance on the side surfaces where the first magnetic tiles 301 and the second magnetic tiles 302 are spliced.

[0039] The present utility model is provided with an assembly hole 101 and a relief groove 102 on the assembly seat 1. The positioning post 2 is coaxially inserted into the assembly hole 101 to form an annular groove for assembling the magnetic ring 3. During assembly, the plurality of first magnetic tiles 301 and the plurality of second magnetic tiles 302 are alternately arranged in the circumferential direction and placed in the annular groove, and the outer ends of the second magnetic tiles 302 are located in the corresponding relief grooves 102. Then, the second magnetic tiles 302 are completely pushed into the annular groove along the radial direction by relying on the locking assembly, and the second magnetic tiles 302 are pressed tightly, so that the plurality of second magnetic tiles 302 and the plurality of first magnetic tiles 301 jointly form a complete magnetic ring 3. This kind of assembly device can not only accurately position and fix each part of the magnetic ring 3, ensure that each part of the magnetic ring 3 is evenly arranged along the circumference, ensure its assembly according to the correct Halbach array structure, avoid uneven arrangement caused by cumulative errors, but also has good operability and convenience, is more likely to install the first magnetic tiles 301 and the second magnetic tiles 302, so as to reduce the working difficulty and labor intensity of the operator and greatly improve the assembly efficiency.

[0040] Refer to Figure 6, the positioning post 2 is provided with a central column body 201, and the diameter of the central column body 201 is consistent with the inner diameter of the magnetic ring 3 to ensure the accuracy of the inner diameter size of the assembled magnetic ring 3. The positioning post 2 is provided with a plurality of ribs 202 on the outer wall of the central column body 201 along the axial direction, and the plurality of ribs 202 are evenly distributed in a ring at equal intervals; when the positioning post 2 is coaxially inserted into the assembly hole 101, the plurality of ribs 202 can equally divide the annular groove into a plurality of assembly spaces, and each assembly space can just accommodate at least one first magnetic tile 301 and at least one second magnetic tile 302.

[0041] Among them, the width of the annular groove occupied by the rib 202 is exactly the same as the width of the annular groove occupied by the second magnetic tile 302.

[0042] In this way, the first magnetic tile 301 and the second magnetic tile 302 can be first installed in each assembly space, and the second magnetic tile 302 is pushed and pressed radially by the locking assembly; after bonding and fixing, the positioning post 2 is withdrawn so that the rib 202 exits the assembly hole 101, and then the second magnetic tile 302 is inserted into the space originally occupied by the rib 202, and the second magnetic tile 302 is also pushed and pressed radially by the locking assembly to make the plurality of second magnetic tiles 302 and the plurality of first magnetic tiles 301 jointly form a complete magnetic ring 3. The utility model adopts this step-by-step assembly method, which is more convenient for assembly, can avoid the difficulty in assembly caused by the interaction force between the parts of the magnetic ring 3, reduces the working difficulty and labor intensity, and has high efficiency in bonding a set of devices into a complete ring in two steps.

[0043] It is worth mentioning that the length of the rib 202 is less than the length of the central column body 201, and the lower end of the rib 202 extends to the middle of the central column body 201, that is to say, the rib 202 is all located in the upper half of the central column body 201. In this way, after the positioning post 2 is withdrawn and the rib 202 exits the assembly hole 101, the lower half of the positioning post 2 still remains in the assembly hole to limit the first magnetic tile 301 and the second magnetic tile 302, preventing them from moving due to the interaction force between them and ensuring the accuracy of the inner diameter size of the assembled magnetic ring 3.

[0044] In addition, at least one limiting block 203 is provided at the upper end of the positioning post 2. As Figure 6 shown, in this embodiment, the number of the limiting blocks 203 is the same as that of the ribs 202, and the limiting blocks 203 are connected to the tops of the ribs 202 one by one. The width of the limiting block 203 in the radial direction of the positioning post 2 is greater than the width of the rib 202, and it is used to insert into the corresponding relief groove 102 to limit the circumferential movement of the positioning post 2, so as to ensure the accuracy of the first magnetic tile 301 and the second magnetic tile 302 installed in the assembly space.

[0045] Refer to Figure 3 and Figure 5, the upper part of the assembly seat 1 has a larger diameter than its lower part, and the assembly hole 101 is located in the upper part of the assembly seat 1. A plurality of sliding grooves 103 are provided at equal intervals along the outer circumference of the upper part of the assembly seat 1. The number of the plurality of sliding grooves 103 is the same as that of the plurality of relief grooves 102 and they are in one-to-one correspondence and communication; a slidable block 4 capable of sliding radially is installed in each of the plurality of sliding grooves 103. The locking assembly pushes the second magnetic tile 302 in the relief groove 102 through the slidable block 4 to push and press the second magnetic tile 302 radially.

[0046] Refer to Figures 2 to 4 , the locking assembly includes a locking sleeve 5 and a plurality of fasteners. The locking sleeve 5 is provided with a collar portion and an annular retaining ring portion formed by radially inward extension from the upper end of the collar portion. The locking sleeve 5 is sleeved on the top of the assembly seat 1 from top to bottom, so that the collar portion is sleeved on the outside of the upper part of the assembly seat 1, and the retaining ring portion of the locking sleeve 5 abuts against the top surface of the assembly seat 1, and the assembly hole 101 is exposed outward. A plurality of fasteners are all installed on the collar portion of the locking sleeve 5 radially. The number of the plurality of fasteners is the same as that of the plurality of slidable blocks 4 and they are in one-to-one correspondence and connection. The fasteners are used to drive the slidable block 4 to slide radially.

[0047] Specifically, the fastener includes a screw 6 and a wing nut 7. The collar portion of the locking sleeve 5 is provided with a plurality of screw holes 501 matching the screw 6 radially. The screw 6 is threadedly connected in the screw hole 501, and the head of the screw 6 is connected to the slidable block 4. The wing nut 7 is fixed to the tail of the screw 6 and is located outside the locking sleeve 5. The wing nut 7 is used for an operator to hold and rotate the screw 6, so as to drive the slidable block 4 to slide radially.

[0048] Wherein, one end of the slidable block 4 is provided with a T-shaped groove 401. The head of the screw 6 is inserted into the T-shaped groove 401. During the rotation of the screw 6, the cooperation between its head and the T-shaped groove 401 is used to push or pull the slidable block 4 to slide radially. The other end of the slidable block 4 is provided with a push plate 402. The push plate 402 extends radially into the relief groove 102 and is used to push the second magnetic tile 302.

[0049] In order to facilitate the ejection of the assembled magnetic ring 3, the present utility model is provided with an ejection hole 104 in the lower part of the assembly seat 1. The ejection hole 104 is coaxially arranged below the assembly hole 101 and is in communication with each other. Wherein, the inner diameter of the ejection hole 104 is smaller than the inner diameter of the assembly hole 101 to form a step therebetween for stopping and limiting the first magnetic tile 301 and the second magnetic tile 302 inserted into the annular groove; at the same time, the inner diameter of the ejection hole 104 is also between the inner diameter and the outer diameter of the magnetic ring 3, so that at least part of the inner ring of the assembled magnetic ring 3 can be exposed from the ejection hole 104 to facilitate its upward ejection.

[0050] Refer to Figure 9 and Figure 10, the Halbach array magnetic ring assembling device of the present utility model further includes an ejector seat 9. The ejector seat 9 is a bottomed and lidless cup-shaped, and a ejector post 901 is provided in the middle of the ejector seat 9. The upper end of the ejector post 901 protrudes upward out of the ejector seat 9. When ejection is needed, the ejector seat 9 is sleeved on the lower half of the assembling seat 1 from bottom to top, so that the ejector post 901 is inserted into the ejection hole 104 and abuts against the bottom of the magnetic ring 3, and then an external force is used to apply a thrust to the ejector seat 9 to eject the magnetic ring 3 out of the assembling hole 101.

[0051] In order to position the positioning post 2 and ensure its concentricity with the assembling hole 101, the Halbach array magnetic ring assembling device of the present utility model further includes a base 8. Refer to Figures 1 to 4 , the base 8 is also a bottomed and lidless cup-shaped, and an annular convex column is provided in the middle thereof. The base 8 is sleeved on the lower half of the assembling seat 1 from bottom to top, and the annular convex column is inserted and matched in the ejection hole 104. The inner diameter of the lower end of the annular convex column of the base 8 contracts to form a positioning hole 801. A positioning platform 204 is provided at the lower end of the positioning post 2. The positioning post 2 is inserted into the assembling hole 101 and the annular convex column from top to bottom, and the positioning platform 204 is inserted and matched with the positioning hole 801 to ensure that the positioning post 2 is coaxial with the assembling hole 101.

[0052] Preferably, the components of the Halbach array magnetic ring assembling device of the present utility model can be made of, but not limited to, stainless steel material to avoid being adsorbed by the first magnetic tile 301 and the second magnetic tile 302 and reduce the installation difficulty.

[0053] The present utility model does not limit the specific number of the first magnetic tiles 301 and the second magnetic tiles 302. For example, it can be 4 pieces, 8 pieces, 16 pieces, etc. Hereinafter, taking the first magnetic tiles 301 and the second magnetic tiles 302 with the number of 8 pieces each as an example, the assembling steps are introduced in detail. Correspondingly, there are 8 positioning grooves 102, 8 sliders 4 and 8 fasteners, and the convex ribs 202 are four, and the annular groove is equally divided into four assembling spaces.

[0054] As Figure 7 and Figure 8 shown, first, assemble one by one in each assembling space, and each assembling space can just accommodate two first magnetic tiles 301 and one second magnetic tile 302; specifically as follows:

[0055] First, insert two first magnetic tiles 301 into the assembly space, and make the two first magnetic tiles 301 respectively lean against the convex ribs 202 on both sides. Then, insert a second magnetic tile 302 between the two first magnetic tiles 301. The outer end of the second magnetic tile 302 is located in the corresponding relief groove 102, and the inner end of the second magnetic tile 302 is located in the assembly space. After that, rotate the corresponding wing nut 7, and push the slider 4 to slide radially through the screw 6. The slider 4 completely pushes the second magnetic tile 302 into the assembly space and tightly fits it with the first magnetic tiles 301 on both sides, and is adhesively fixed by the glue coated in advance. Repeat this step and assemble them in the four assembly spaces in turn.

[0056] Secondly, pull out the positioning post 2 upward to a specified height, so that the convex rib 202 is completely withdrawn from the assembly hole 101, and the lower half of the positioning post 2 still remains in the assembly hole 101.

[0057] Then, insert the second magnetic tiles 302 in turn into the space of the annular groove originally occupied by the convex ribs 202. Similarly, the outer end of the second magnetic tile 302 is located in the corresponding relief groove 102, and its inner end is located in the annular groove. Rotate the corresponding wing nut 7, and push the slider 4 to slide radially through the screw 6. The slider 4 completely pushes the second magnetic tile 302 into the annular groove and tightly fits it with the first magnetic tiles 301 on both sides, and is adhesively fixed by the glue coated in advance.

[0058] Finally, pull out the positioning post 2, reset all the fasteners, disassemble the base 8 and replace the ejector seat 9, and eject the magnetic ring 3 out of the assembly hole 101 through the ejector seat 9.

[0059] It can be seen that the Halbach array magnetic ring assembly device of the present utility model is provided with an assembly hole 101 and a relief groove 102 on the assembly seat 1, and the positioning post 2 is coaxially inserted into the assembly hole 101 to form an annular groove for assembling the magnetic ring 3. During assembly, a plurality of first magnetic tiles 301 and a plurality of second magnetic tiles 302 are alternately arranged in the circumferential direction and placed in the annular groove, and the outer end of the second magnetic tile 302 is located in the corresponding relief groove 102. Then, rely on the locking assembly to completely push the second magnetic tile 302 into the annular groove radially and press the second magnetic tile 302, so that a plurality of second magnetic tiles 302 and a plurality of first magnetic tiles 301 are jointly spliced into a complete magnetic ring 3. This kind of assembly device can not only accurately position and fix each part of the magnetic ring 3, ensure that each part of the magnetic ring 3 is evenly arranged along the circumference, ensure that it is assembled according to the correct Halbach array structure, avoid uneven arrangement caused by cumulative errors, but also has good operability and convenience, is more easy to load the first magnetic tile 301 and the second magnetic tile 302, so as to reduce the working difficulty and labor intensity of the operator and greatly improve the assembly efficiency.

[0060] In the above description, many specific details are set forth in order to fully understand the present utility model. However, the above description is only a preferred embodiment of the present utility model, and the present utility model can be implemented in many other ways different from those described herein. Therefore, the present utility model is not limited by the specific implementations disclosed above. At the same time, any person skilled in the art can make many possible changes and modifications to the technical solution of the present utility model by using the methods and technical contents disclosed above without departing from the scope of the technical solution of the present utility model, or modify it into an equivalent embodiment with equivalent changes. All those that do not depart from the content of the technical solution of the present utility model, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model still fall within the scope of protection of the technical solution of the present utility model.

Claims

1. A Halbach array magnetic ring assembly device, characterized in that: include: An assembly seat (1), the assembly seat (1) being provided with an assembly hole (101) and a plurality of evacuation grooves (102) distributed in an annular manner and at equal intervals along the inner wall of the assembly hole (101); A positioning column (2) is coaxially inserted in the assembly hole (101) in a detachable manner, and an annular groove for assembling the magnetic ring (3) is formed between the positioning column (2) and the inner wall of the assembly hole (101), and the ring width of the annular groove is consistent with the ring width of the magnetic ring (3); wherein the magnetic ring (3) comprises a plurality of first magnetic tiles (301) and a plurality of second magnetic tiles (302); during assembly, the plurality of first magnetic tiles (301) and the plurality of second magnetic tiles (302) are alternately arranged in a circumferential direction and placed in the annular groove, and at least a portion of each of the plurality of second magnetic tiles (302) is located in the corresponding clearance groove (102); A locking assembly is mounted on the assembly seat (1) and is used to completely push the second magnetic tile (302) in the clearance groove (102) into the annular groove along the radial direction of the assembly seat (1), so that a plurality of the second magnetic tiles (302) and a plurality of the first magnetic tiles (301) are spliced ​​together to form a complete magnetic ring (3).

2. The Halbach array magnetic ring assembly device according to claim 1, characterized in that: The positioning column (2) is provided with a central column (201) and a plurality of convex ribs (202) annularly distributed at equal intervals along the outer circumference of the central column (201); the diameter of the central column (201) is consistent with the inner diameter of the magnetic ring (3); the plurality of convex ribs (202) divide the annular groove into a plurality of assembly spaces; each of the assembly spaces can just accommodate at least one of the first magnetic tile (301) and at least one of the second magnetic tile (302).

3. The Halbach array magnetic ring assembly device according to claim 2, characterized in that: The length of the convex rib (202) is smaller than the length of the central column (201), and the lower end of the convex rib (202) extends to the middle of the central column (201).

4. The Halbach array magnetic ring assembly device according to claim 1, characterized in that: At least one limiting block (203) is provided at the upper end of the positioning column (2), and the limiting block (203) is used to be inserted into the corresponding giving way groove (102) to limit the circumferential movement of the positioning column (2).

5. The Halbach array magnetic ring assembly device according to claim 1, characterized in that: The outer periphery of the assembly seat (1) is provided with a plurality of slide grooves (103) at equal intervals, the number of which is the same as the plurality of the clearance grooves (102) and which are connected one-to-one. Slide blocks (4) capable of radial sliding are installed in the plurality of slide grooves (103). The locking assembly pushes the second magnetic tile (302) in the clearance groove (102) via the slide blocks (4).

6. The Halbach array magnetic ring assembly device according to claim 5, characterized in that: The locking assembly comprises a locking sleeve (5) and a plurality of fasteners, wherein the locking sleeve (5) is sleeved on the top of the assembly seat (1), the plurality of fasteners are radially mounted on the locking sleeve (5) and are connected to the plurality of sliders (4) in a one-to-one correspondence, and the fasteners are used to drive the sliders (4) to slide radially.

7. The Halbach array magnetic ring assembly device according to claim 6, characterized in that: The fastener comprises a screw (6) and a butterfly nut (7); the locking sleeve (5) is provided with a screw hole (501) matching the screw (6) in the radial direction; the screw (6) is threadedly connected in the screw hole (501); the head of the screw (6) is connected to the slider (4); and the butterfly nut (7) is fixed to the tail of the screw (6) and is located outside the locking sleeve (5).

8. The Halbach array magnetic ring assembly device according to claim 7, characterized in that: One end of the slider (4) is provided with a T-shaped slot (401), and the head of the screw (6) is inserted into the T-shaped slot (401); the other end of the slider (4) is provided with a push plate (402), and the push plate (402) extends into the clearance slot (102).

9. The Halbach array magnetic ring assembly device according to claim 1, characterized in that: The assembly seat (1) further comprises a base (8), wherein the base (8) is mounted on the bottom of the assembly seat (1), a positioning hole (801) is provided on the base (8), a positioning platform (204) is provided at the lower end of the positioning column (2), and the positioning platform (204) is plugged into and matched with the positioning hole (801), so that the positioning column (2) is coaxially inserted into the assembly hole (101).

10. The Halbach array magnetic ring assembly device according to claim 1, characterized in that: The invention also comprises an ejection seat (9), wherein a ejection column (901) is provided in the middle of the ejection seat (9), and the assembly seat (1) is provided with an ejection hole (104) which is connected to the assembly hole (101) and is located below the assembly hole (101), wherein the inner diameter of the ejection hole (104) is between the inner diameter and the outer diameter of the magnetic ring (3), and the ejection column (901) is used to be inserted into the ejection hole (104) to eject the magnetic ring (3) upward out of the assembly hole (101).

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