Radiation magnetic loop

Abstract

The utility model provides a kind of radiation magnetic ring, comprising: several magnetic blocks;Multiple annular magnetic block seats, each magnetic block seat is equipped with multiple circumferential distribution installation slot, magnetic block is installed in installation slot, the center line of magnetic block is directed to the central axis of magnetic block seat, multiple magnetic block seats are coaxially arranged and are overlapped to form magnetic cylinder;Cover plate, it is connected with one end of magnetic cylinder, cover plate is used to cover one end surface of magnetic cylinder, to avoid the magnetic block on the magnetic block seat of magnetic cylinder this end is exposed.The utility model's radiation magnetic ring can realize large size, easily realize the product of large magnetic performance, can greatly increase the number of pole of radiation magnetic ring, reduce magnetic torque in the process of rotation, with easy processing, low in cost, light in weight, strong magnetism, strength reliable, widely used advantage.

Description

Technical Field

[0001] This utility model relates to the field of radiation magnetic ring technology, and in particular to a radiation magnetic ring. Background Technology

[0002] In the field of permanent magnet drives and precision drives, radially magnetized multipole rings have become core functional components due to their unique magnetic circuit structure. The magnetization direction of these rings can be distributed radially, with the magnetization vector pointing towards or away from the center. This characteristic gives them irreplaceable advantages in high-precision rotary systems such as brushless motor rotors, magnetic couplers, and magnetic bearings, enabling zero-contact torque transmission and high-precision motion control.

[0003] Current radial magnetic rings are typically monolithic. Limited by material sintering deformation control and multi-pole magnetization processes, the diameter of monolithic radial magnetic rings is generally less than 200mm, making manufacturing difficult. Theoretical analysis and experiments show that in rotating magnetic assemblies, the number of radially magnetized poles is strongly negatively correlated with torque fluctuation; that is, the more magnetized poles, the smaller the torque fluctuation amplitude. Torque fluctuation can cause rotational imbalance, easily generating vibration and noise, and ultimately damaging the product. Therefore, increasing the number of magnetized poles is beneficial to improving the stability of system operation. However, in existing technologies, increasing the number of magnetized poles requires a significant increase in the pole groove density of the magnetizing head. For magnetic rings with a diameter >200mm, the difficulty of high-precision pole groove machining increases exponentially, making multi-pole and large-size incompatible.

[0004] Therefore, developing a large-size radiating magnetic ring that supports high pole number magnetization has become a key path to break through the performance ceiling of magnetic drive systems. Utility Model Content

[0005] The purpose of this invention is to provide a radiating magnetic ring that can achieve large size and high magnetic performance. It can greatly increase the number of poles of the radiating magnetic ring, reduce the magnetic torque during rotation, and has the advantages of easy processing, low cost, light weight, strong magnetism, reliable strength, and wide applicability.

[0006] To achieve the above objectives, this utility model provides a radiating magnetic ring, comprising:

[0007] Several magnetic blocks;

[0008] Multiple annular magnetic block seats, each magnetic block seat having multiple circumferentially distributed mounting slots, the magnetic blocks being installed in the mounting slots, the center line of the magnetic blocks pointing to the central axis of the magnetic block seat, the multiple magnetic block seats being coaxially arranged and stacked to form a magnetic cylinder;

[0009] A cover plate is connected to one end of the magnetic cylinder. The cover plate is used to cover one end face of the magnetic cylinder to prevent the magnetic block on the magnetic block seat at that end of the magnetic cylinder from being exposed.

[0010] Optionally, the cross-section of the magnetic block along the radial direction of the magnetic block seat is rectangular or trapezoidal. When the cross-section of the magnetic block along the radial direction of the magnetic block seat is trapezoidal, the upper base of the trapezoid faces the inner circle of the magnetic block seat.

[0011] Optionally, the upper base of the trapezoid can be arc-shaped, and / or the lower base of the trapezoid can be arc-shaped.

[0012] Optionally, the radiating magnetic ring includes a flange, which is connected to the magnetic cylinder or the cover plate.

[0013] Optionally, the mounting slot corresponds one-to-one with the magnetic block, and the magnetic block is completely located in the mounting slot.

[0014] Optionally, the magnetic blocks are arranged in rows on the magnetic cylinder, and the magnetic blocks in each row are distributed along the axial direction of the magnetic cylinder.

[0015] Optionally, each of the magnetic blocks is provided with a first mounting hole for connection to the magnetic block seat by bolts or pins.

[0016] Optionally, the magnetic block holder is made of a non-magnetic material, and the magnetic block is made of a magnetic material.

[0017] Optionally, the radiating magnetic ring includes multiple first bolts and multiple second bolts, and each mounting groove is provided with a threaded hole; except for the outermost magnetic block seat at the end of the magnetic cylinder facing away from the cover plate, each magnetic block seat has a countersunk hole in its mounting groove, and the first bolt passes through the countersunk hole, the magnetic block and the threaded hole in sequence to connect and fix the magnetic block and the two magnetic block seats adjacent to the magnetic block; the cover plate is provided with multiple second mounting holes, and the second bolt passes through the second mounting holes, the magnetic block and the threaded hole in sequence to connect and fix the cover plate and the magnetic block and magnetic block seat adjacent to the cover plate.

[0018] Optionally, the mounting groove extends radially through the magnetic block seat to expose the two poles of the magnetic block.

[0019] As configured above, magnetic blocks are mounted on magnetic block holders. These magnetic blocks are easily modularized and standardized for manufacturing, and are easy to process. Multiple magnetic block holders are stacked to form a magnetic cylinder, satisfying both the pole number and layer number requirements. Compared to existing integral radial magnetic rings, this modular radial magnetic ring can be manufactured in larger sizes and with increased pole numbers, thereby reducing magnetic torque during rotation. Furthermore, the magnetic block holders are made of non-magnetic materials, while only the magnetic blocks require magnetic materials, reducing the amount of magnetic material used, saving costs, and reducing weight. Moreover, because this modular radial magnetic ring is assembled from multiple magnetic blocks and holders, the polarity arrangement of the magnetic blocks is more flexible and can be adjusted according to different requirements, making it highly adaptable and widely applicable. In summary, this invention can manufacture larger radial magnetic rings, easily achieving products with high magnetic performance, significantly increasing the pole number of the radial magnetic ring, reducing magnetic torque during rotation, and possessing advantages such as easy processing, low cost, light weight, strong magnetism, reliable strength, and wide applicability. Attached Figure Description

[0020] Those skilled in the art will understand that the accompanying drawings are provided to better understand the present invention and do not constitute any limitation on the scope of the present invention. Wherein:

[0021] Figure 1 This is a schematic diagram of a radiation magnetic ring according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the magnetic cylinder of a radiation magnetic ring according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the magnetic block base of a radial magnetic ring according to an embodiment of the present invention;

[0024] Figure 4 This is an isometric view of the magnetic block seat of a radial magnetic ring according to an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the cover plate of a radiation magnetic ring according to an embodiment of the present invention;

[0026] Figure 6 This is a partially enlarged view of a radiation magnetic ring according to an embodiment of the present invention.

[0027] The reference numerals in the attached figures are as follows:

[0028] 1-Magnetic block; 11-First mounting hole; 2-Magnetic block seat; 21-Mounting groove; 22-Threaded hole; 23-Counterhead hole; 3-Cover plate; 31-Second mounting hole; 4-Magnetic cylinder. Detailed Implementation

[0029] In this document, unless otherwise stated, the terms “upper,” “lower,” “left,” “right,” “inner,” “outer,” “front,” “back,” “top,” “bottom,” etc., are used to indicate orientation or positional relationship based on the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a characteristic orientation and operation, and therefore should not be construed as a limitation of the present invention.

[0030] The specific embodiments of this utility model will now be described in more detail with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0031] The preferred embodiments of this utility model are given below with reference to the accompanying drawings and described in detail.

[0032] Figure 1 This is a schematic diagram of a radiation magnetic ring according to an embodiment of the present invention. Figure 2 This is a schematic diagram of the magnetic cylinder of a radial magnetic ring according to an embodiment of this utility model. Please refer to it. Figure 1 and Figure 2 This utility model provides a radiating magnetic ring, which includes a plurality of magnetic blocks 1, a plurality of annular magnetic block seats 2 and a cover plate 3.

[0033] Please refer to Figure 3 and Figure 4 Each of the magnetic block holders 2 has multiple circumferentially evenly distributed mounting slots 21. The magnetic blocks 1 are mounted in the mounting slots 21, with each slot corresponding to a magnetic block 1. The mounting slots 21 radially penetrate the magnetic block holder 2 to expose the two poles of the magnetic blocks 1. The centerline of the magnetic block 1 points to the central axis of the magnetic block holder 2, and the magnetization direction is along the centerline of the magnetic block 1. Further, the cross-section of the magnetic block 1 radially along the magnetic block holder 2 is rectangular or trapezoidal; this embodiment uses a rectangle as an example. Figure 2 As shown. It can be understood that the cross-section of the magnetic block 1 along the radial direction of the magnetic block base 2 is the cross-section cut along the radial direction of the magnetic block base 2. When the cross-section of the magnetic block 1 along the radial direction of the magnetic block base 2 is trapezoidal, the upper base of the trapezoid faces the inner circle of the magnetic block base 2, and the lower base of the trapezoid faces the outer circle of the magnetic block base 2; that is, the long side of the trapezoid faces outward, and the short side faces inward. In other embodiments, the upper base of the trapezoid can be arc-shaped, and / or, the lower base of the trapezoid can be arc-shaped.

[0034] The magnetic block holder 2 is made of a non-magnetic material, while the magnetic block 1 is made of a magnetic material. For example, the magnetic block 1 can be made of high-performance neodymium iron boron magnets, making it easy to achieve products with high magnetic performance. Preferably, the magnetic block 1 can undergo surface treatment. The magnetic block holder 2 can be made of 7075 high-strength aluminum alloy, which significantly reduces weight while maintaining strength. Furthermore, the magnetic block holder 2 can be anodized to increase its surface hardness and wear resistance. The cover plate 3 can also be made of 7075 high-strength aluminum alloy.

[0035] Multiple magnetic block holders 2 are coaxially arranged and stacked to form a magnetic cylinder 4, which can be understood as a cylindrical magnetic assembly. The magnetic block 1 is completely located in the mounting groove 21, that is, the magnetic block 1 does not protrude from the mounting groove 21, which also allows the multiple magnetic block holders 2 to be stacked compactly.

[0036] Furthermore, after the magnetic blocks 1 are installed in the magnetic block seats 2 and the magnetic block seats 2 are stacked to form a magnetic cylinder 4, the magnetic blocks 1 are arranged in rows on the magnetic cylinder 4, and the magnetic blocks 1 in each row are distributed along the axial direction of the magnetic cylinder 4, with the distance between each row being the same. It can be understood that... Figure 1 The vertical direction in the middle is the column.

[0037] The cover plate 3 is connected to one end of the magnetic cylinder 4. The cover plate 3 is used to cover one end face of the magnetic cylinder 4, that is, to cover one axial end face of the magnetic cylinder 4, so as to prevent the magnetic block 1 on the magnetic block seat 2 at that end of the magnetic cylinder 4 from being exposed. It can be understood that the cover plate 3 is connected to the end of the magnetic cylinder 4 that exposes the mounting groove 21, so it is necessary to cover the opening of the mounting groove 21 with the cover plate 3 to prevent the magnetic block 1 in the mounting groove 21 from being exposed.

[0038] It is understood that the magnetic block 1, the magnetic block seat 2, and the cover plate 3 are to be assembled as a whole. For example, each of the magnetic blocks 1 is provided with a first mounting hole 11 for connecting to the magnetic block seat 2 by bolts or pins. This embodiment takes bolt connection as an example. Further, the radial magnetic ring includes multiple first bolts and multiple second bolts (not shown in the figure), and each of the mounting grooves 21 is provided with a threaded hole 22; except for the outermost magnetic block seat 2 at the end of the magnetic cylinder 4 facing away from the cover plate 3, each of the mounting grooves 21 of the magnetic block seat 2 is provided with a countersunk hole 23. The first bolt passes through the countersunk hole 23, the magnetic block 1, and the threaded hole 22 in sequence to connect and fix the magnetic block 1 and the two magnetic block seats 2 adjacent to the magnetic block 1; the cover plate 3 is provided with multiple second mounting holes 31, such as Figure 5 and Figure 1 As shown. The second bolt passes sequentially through the second mounting hole 31, the magnetic block 1, and the threaded hole 22 to connect and fix the cover plate 3 and the magnetic block 1 and magnetic block seat 2 adjacent to the cover plate 3. (See reference...) Figure 1In terms of orientation, except for the topmost magnetic block holder 2, the threaded holes 22 in the mounting slots 21 of each magnetic block holder 2 are used to connect with the uppermost magnetic block holder 2. That is, the first bolt passes through the countersunk hole 23 of the uppermost magnetic block holder 2, then through the first mounting hole 11 of the magnetic block 1 (the magnetic block between the uppermost and lower magnetic block holder 2, i.e., the magnetic block in the mounting slot of the lower magnetic block holder 2), and finally is threadedly connected to the lower magnetic block holder 2. The threaded holes 22 of the topmost magnetic block holder 2 are used to connect with the cover plate 3. That is, the second bolt passes through the second mounting hole 31 on the cover plate 3, then through the first mounting hole 11 of the magnetic block 1 (the magnetic block between the cover plate 3 and the topmost magnetic block holder 2, i.e., the magnetic block in the mounting slot of the topmost magnetic block holder 2), and finally is threadedly connected to the topmost magnetic block holder 2. It can be understood that the first mounting hole 11 is a smooth hole, and the second mounting hole 31 can be a countersunk hole. For example, as shown... Figure 6 As shown (for clarity, Figure 6 (Some magnetic blocks have been removed). Except for the bottom magnetic block holder, the countersunk holes 23 and threaded holes 22 of the adjacent magnetic block holders 2 are staggered. Correspondingly, the first mounting holes 11 of the adjacent magnetic blocks 1 are also staggered.

[0039] Since the radial magnetic ring of this invention is assembled from multiple magnetic blocks 1 and multiple magnetic block seats 2, the polarity arrangement of the magnetic blocks 1 is relatively free, and the arrangement of the polarity of the magnetic blocks 1 can be adjusted according to different requirements. The magnetic blocks 1 have N poles and S poles, and the N poles of the magnetic blocks 1 can be freely arranged to face inward or outward from the magnetic cylinder. For example, the magnetic blocks 1 can be divided into multiple layers according to the number of layers of magnetic block seats 2. If the N poles of all magnetic blocks 1 in one layer face inward from the magnetic cylinder, then the N poles of the magnetic blocks 1 in the adjacent layers of that layer all face outward from the magnetic cylinder.

[0040] For ease of installation, the radiating magnetic ring also includes a flange, which is connected to the magnetic cylinder 4 or the cover plate 3. For example, the flange is connected to the end of the magnetic cylinder 4 facing away from the cover plate 3; that is, the magnetic block seat 2 at the end of the magnetic cylinder 4 facing away from the cover plate 3 is connected to the flange, facilitating connection to other workpieces via the flange. It is understood that the magnetic block seat 2 at the end of the magnetic cylinder 4 facing away from the cover plate 3 can be designed to be thicker than other magnetic block seats 2 to enhance the connection strength with the flange.

[0041] As configured above, magnetic blocks 1 are installed on magnetic block holder 2. Magnetic blocks 1 are easily modularized and standardized for manufacturing, and easy to process. Multiple magnetic block holders 2 are stacked to form a magnetic cylinder 4, satisfying both the pole number and layer number requirements. Compared to the existing integral radial magnetic rings, this modular radial magnetic ring can be manufactured in a larger size and with an increased pole number, thereby reducing the magnetic torque during rotation. Furthermore, the magnetic block holder 2 is made of non-magnetic material, while only the magnetic blocks 1 require magnetic material, reducing the amount of magnetic material used, saving costs, and reducing weight. Moreover, since this modular radial magnetic ring is assembled from multiple magnetic blocks 1 and magnetic block holders 2, the polarity arrangement of the magnetic blocks 1 is relatively free. The polarity arrangement of the magnetic blocks 1 can be adjusted according to different requirements, making it highly adaptable and widely applicable. In summary, this invention can manufacture larger radial magnetic rings, easily achieving products with high magnetic performance, significantly increasing the pole number of the radial magnetic ring, reducing the magnetic torque during rotation, and possessing advantages such as easy processing, low cost, light weight, strong magnetism, reliable strength, and wide applicability.

[0042] It should be noted that references to "an embodiment," "an embodiment," "a specific embodiment," "some embodiments," etc., in the specification only indicate that the described embodiment may include a specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Additionally, when a specific feature, structure, or characteristic is described in conjunction with an embodiment, whether explicitly described or not, implementing such a feature, structure, or characteristic in conjunction with other embodiments is within the knowledge of those skilled in the art.

[0043] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the systems disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the descriptions are relatively simple, and relevant parts can be referred to the method section.

[0044] It should also be noted that although the present invention has been disclosed above with reference to preferred embodiments, these embodiments are not intended to limit the present invention. For any person skilled in the art, many possible variations and modifications can be made to the present invention without departing from the scope of the present invention, or equivalent embodiments can be modified based on the disclosed technical content. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the present invention shall still fall within the protection scope of the present invention.

[0045] It should also be understood that, unless otherwise specified or indicated, the terms “first,” “second,” “third,” etc., in the specification are used only to distinguish the various components, elements, and steps in the specification, and not to indicate the logical or sequential relationships between the various components, elements, and steps.

[0046] Furthermore, it should be recognized that the terminology described herein is used only to describe particular embodiments and not to limit the scope of the invention. It must be noted that the singular forms “a” and “an” used herein and in the appended claims include plural bases unless the context clearly indicates otherwise. For example, a reference to “a step” or “an apparatus” means a reference to one or more steps or apparatuses, and may include secondary steps and secondary apparatuses. All conjunctions used should be understood in the broadest sense. Also, the word “or” should be understood to have the definition of logical “or” rather than logical “exclusive OR”, unless the context clearly indicates otherwise. Furthermore, implementation of the methods and / or devices in embodiments of the invention may include performing selected tasks manually, automatically, or in combination.

Claims

1. A radiating magnetic ring, characterized in that, include: Several magnetic blocks; Multiple annular magnetic block seats, each magnetic block seat having multiple circumferentially distributed mounting slots, the magnetic blocks being installed in the mounting slots, the center line of the magnetic blocks pointing to the central axis of the magnetic block seat, the multiple magnetic block seats being coaxially arranged and stacked to form a magnetic cylinder; A cover plate is connected to one end of the magnetic cylinder. The cover plate is used to cover one end face of the magnetic cylinder to prevent the magnetic block on the magnetic block seat at that end of the magnetic cylinder from being exposed.

2. The radiating magnetic ring as described in claim 1, characterized in that, The cross-section of the magnetic block along the radial direction of the magnetic block base is rectangular or trapezoidal. When the cross-section of the magnetic block along the radial direction of the magnetic block base is trapezoidal, the upper base of the trapezoid faces the inner circle of the magnetic block base.

3. The radiating magnetic ring as described in claim 2, characterized in that, The upper base of the trapezoid may be arc-shaped, and / or the lower base of the trapezoid may be arc-shaped.

4. The radiating magnetic ring as described in claim 1, characterized in that, The radiating magnetic ring includes a flange, which is connected to the magnetic cylinder or the cover plate.

5. The radiating magnetic ring as described in claim 1, characterized in that, The mounting slots correspond one-to-one with the magnetic blocks, and the magnetic blocks are completely located in the mounting slots.

6. The radiating magnetic ring as described in claim 1, characterized in that, The magnetic blocks are arranged in rows on the magnetic cylinder, and the magnetic blocks in each row are distributed along the axial direction of the magnetic cylinder.

7. The radiating magnetic ring as described in claim 1, characterized in that, Each of the magnetic blocks is provided with a first mounting hole for connection to the magnetic block base by means of bolts or pins.

8. The radiating magnetic ring as described in claim 1, characterized in that, The magnetic block holder is made of a non-magnetic material, while the magnetic block is made of a magnetic material.

9. The radiating magnetic ring as described in claim 1, characterized in that, The radiating magnetic ring includes multiple first bolts and multiple second bolts, and each mounting groove has a threaded hole. Except for the outermost magnetic block seat at the end of the magnetic cylinder facing away from the cover plate, each magnetic block seat has a countersunk hole in its mounting groove. The first bolts pass through the countersunk hole, the magnetic block, and the threaded hole in sequence to connect and fix the magnetic block and the two magnetic block seats adjacent to the magnetic block. The cover plate has multiple second mounting holes, and the second bolts pass through the second mounting holes, the magnetic block, and the threaded hole in sequence to connect and fix the cover plate and the magnetic block and magnetic block seat adjacent to the cover plate.

10. The radiating magnetic ring as described in claim 1, characterized in that, The mounting groove extends radially through the magnetic block seat to expose the two poles of the magnetic block.

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