Magnetic bearing, magnetic motor and assembly method

Abstract

The application provides a magnetic suspension bearing, a magnetic suspension motor and an assembling method, and the magnetic suspension bearing comprises an iron core and a radial ring, the iron core comprises a main body and a tooth part protruding on the main body; the radial ring is provided with a mounting groove and a thrust piece, the iron core is mounted in the mounting groove, and the thrust piece limits the tooth part to prevent the iron core from being taken out of the mounting groove. According to the scheme, the iron core is mounted in the mounting groove, the iron core is arranged in cooperation with the mounting groove, the thrust piece stops and limits the tooth part of the iron core, the iron core is prevented from being taken out of the mounting groove, the iron core is mounted together with the radial ring in cooperation, and the rebound of the radial ring caused by the mounting mode of hot mounting in the prior art is avoided, so that the iron core is taken out.

Description

Technical Field

[0001] This invention relates to the field of motor technology, and more specifically, to a magnetic levitation bearing, a magnetic levitation motor, and an assembly method. Background Technology

[0002] In existing magnetic levitation bearings, the core is heat-fitted onto the radial ring after the winding is completed. During this process, the core's end face should be flush with or slightly lower than the radial ring's end face. However, it often springs back up after cooling, causing the core to protrude above the radial ring's end face. This can affect the installation of other components in the bearing system. After heat fitting, the components are at high temperatures and typically require natural cooling to room temperature before subsequent assembly, which is time-consuming. Furthermore, if any component fails during or after the heat fitting process, the entire magnetic levitation bearing must be scrapped, resulting in significant losses.

[0003] Therefore, existing technologies have the problem that the iron core in magnetic levitation bearings can easily detach from the radial ring. Summary of the Invention

[0004] This invention provides a magnetic levitation bearing, a magnetic levitation motor, and an assembly method to solve the problem in the prior art where the iron core easily detaches from the radial ring.

[0005] To address the aforementioned problems, according to one aspect of the present invention, a magnetic levitation bearing is provided, comprising an iron core and a radial ring. The iron core includes a body and teeth protruding from the body. The radial ring has a mounting groove and a thrust member. The iron core is mounted in the mounting groove, and the thrust member limits the teeth to prevent the iron core from dislodging from the mounting groove.

[0006] Furthermore, the radial ring also includes a first ring and a second ring, the first ring being connected to the second ring and the first ring and the second ring surrounding each other to form an mounting groove, the first ring being used to circumferentially limit the iron core, and the second ring being used to radially limit the iron core.

[0007] Furthermore, one end of the thrust member is connected to the end face of the second ring away from the first ring, and there are multiple thrust members distributed along the circumference of the second ring.

[0008] Furthermore, there are multiple teeth and thrust members, and there is a clearance groove between two adjacent thrust members to avoid the teeth; when the teeth correspond to the clearance groove, the iron core can be placed into the mounting groove, and then the iron core is rotated at a set angle so that the thrust member stops the teeth, and multiple teeth correspond one-to-one with multiple thrust members.

[0009] Furthermore, there are multiple teeth, which are distributed around the circumference of the main body, and the space between two adjacent teeth forms a groove.

[0010] Furthermore, the magnetic levitation bearing also includes a magnet, which is disposed in the groove, and the main body and radial ring limit the movement of the magnet.

[0011] Furthermore, the magnetic levitation bearing also includes a retaining ring and a magnet. The magnet is located in the mounting groove, and the retaining ring is connected to the radial ring. The retaining ring and the radial ring axially limit the magnet.

[0012] Furthermore, the retaining ring includes a connecting ring and sector teeth. Multiple sector teeth are distributed on the outer circumferential surface of the connecting ring. There are multiple thrust members, and there is a relief groove between two adjacent thrust members. The magnet corresponds to the relief groove, and the sector teeth cooperate with the relief groove to limit the movement of the magnet.

[0013] Furthermore, the magnetic bearing also includes fasteners that secure the retaining ring to the radial ring.

[0014] Furthermore, the main body includes a main ring and multiple winding teeth. The winding teeth are arranged inside the main ring and distributed circumferentially along the main ring. The winding teeth are used to wind the coil.

[0015] According to another aspect of the present invention, a magnetic levitation motor is provided, comprising a housing, a rotor and the aforementioned magnetic levitation bearing, wherein the rotor shaft passes through the iron core of the magnetic levitation bearing.

[0016] According to another aspect of the present invention, an assembly method is provided for the above-described magnetic levitation bearing, comprising:

[0017] S10: Wrap the coil around the iron core to form a winding;

[0018] S20: Align the teeth of the iron core with the relief groove of the radial ring and place the iron core into the mounting groove;

[0019] S30: Rotate the iron core by a set angle so that the thrust stop teeth and the groove of the iron core correspond to the relief groove.

[0020] S40: Place the magnet into the slot of the iron core;

[0021] S50: Align the sector teeth of the retaining ring with the relief groove so that the sector teeth stop the magnet and fix the retaining ring to the radial ring.

[0022] The present invention provides a magnetic levitation bearing, comprising an iron core and a radial ring. The iron core includes a main body and teeth protruding from the main body. The radial ring has a mounting groove and a thrust member. The iron core is mounted in the mounting groove, and the thrust member limits the teeth to prevent the iron core from dislodging from the mounting groove. With this solution, the iron core is mounted in the mounting groove, and the iron core is fitted into the mounting groove. The thrust member stops and limits the teeth of the iron core, preventing the iron core from dislodging from the mounting groove. This allows the iron core and the radial ring to be fitted together, avoiding the springback of the radial ring that causes the iron core to dislodge in the heat-fitting mounting method of the prior art. Attached Figure Description

[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0024] Figure 1 A schematic diagram of the structure of a magnetic levitation bearing provided in an embodiment of the present invention is shown;

[0025] Figure 2 It shows Figure 1 A cross-sectional view of the magnetic levitation bearing in the image;

[0026] Figure 3 It shows Figure 1 A schematic diagram of the radial ring structure of the magnetic levitation bearing in the image;

[0027] Figure 4 It shows Figure 1 A schematic diagram of the core structure of the magnetic levitation bearing in the image;

[0028] Figure 5 It shows Figure 1 A schematic diagram of the retaining ring of the magnetic levitation bearing.

[0029] The above figures include the following reference numerals:

[0030] 10. Iron core; 11. Main body; 111. Main ring; 112. Winding teeth; 12. Tooth section;

[0031] 20. Radial ring; 21. Thrust member; 22. First ring; 23. Second ring;

[0032] 30. Magnets;

[0033] 40. Retaining ring; 41. Connecting ring; 42. Sector teeth;

[0034] 50. Fasteners. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0036] like Figures 1 to 5As shown, an embodiment of the present invention provides a magnetic levitation bearing, including an iron core 10 and a radial ring 20. The iron core 10 includes a body 11 and teeth 12 protruding from the body 11. The radial ring 20 has a mounting groove and a thrust member 21. The iron core 10 is mounted in the mounting groove, and the thrust member 21 limits the teeth 12 to prevent the iron core 10 from coming out of the mounting groove.

[0037] In this scheme, the iron core 10 is installed in the mounting groove, and the iron core 10 is fitted with the mounting groove. The thrust member 21 stops and limits the teeth 12 of the iron core 10, preventing the iron core 10 from coming out of the mounting groove. This allows the iron core 10 to be fitted together with the radial ring 20, avoiding the springback of the radial ring 20 that causes the iron core to come out in the heat-fitting installation method of the prior art.

[0038] like Figure 3 As shown, the radial ring 20 also includes a first ring 22 and a second ring 23. The first ring 22 is connected to the second ring 23, and the first ring 22 and the second ring 23 surround each other to form an installation groove. The first ring 22 is used to circumferentially limit the iron core 10, and the second ring 23 is used to radially limit the iron core 10.

[0039] With this configuration, the end faces of the first ring 22 and the second ring 23 are fixedly connected, and the first ring 22 and the second ring 23 surround each other to form an installation groove. The iron core 10 is placed in the installation groove. The first ring 22 limits the iron core 10 axially, and the second ring 23 limits the iron core 10 radially, so that the iron core 10 is installed in conjunction with the first ring 22 and the second ring 23 without the need for heat fitting.

[0040] like Figure 3 As shown, one end of the thrust member 21 is connected to the end face of the second ring 23 away from the first ring 22. There are multiple thrust members 21, which are distributed along the circumference of the second ring 23.

[0041] With this configuration, the thrust members 21 are distributed circumferentially along the second ring 23, axially limiting the iron core 10 from multiple positions. The thrust members 21 have a thrust surface facing the mounting groove, and the thrust surface stops and limits the toothed portion 12. One end of the thrust member 21 is connected to the end face of the second ring 23 away from the first ring 22, so that the first ring 22 and the thrust members 21 axially limit the iron core 10 from both ends of the iron core 10, respectively.

[0042] like Figures 3 to 4 As shown, there are multiple teeth 12 and multiple thrust members 21. There is a clearance groove between two adjacent thrust members 21. The clearance groove is used to avoid the teeth 12. When the teeth 12 correspond to the clearance groove, the iron core 10 can be placed into the mounting groove. Then the iron core 10 is rotated by a set angle so that the thrust members 21 stop the teeth 12. Multiple teeth 12 correspond one-to-one with multiple thrust members 21.

[0043] With this configuration, the clearance groove is used to avoid the tooth 12, so that the iron core 10 can be placed into the mounting groove. After the iron core 10 is placed into the mounting groove, the iron core 10 is rotated by a set angle so that the thrust member 21 coincides with the tooth 12. The thrust member 21 stops the tooth 12 and limits the tooth 12.

[0044] like Figure 4 As shown, there are multiple teeth 12, which are distributed around the body 11, and the space between two adjacent teeth 12 forms a groove.

[0045] With this configuration, multiple teeth 12 are distributed around the circumference of the main body 11, so that each tooth 12 corresponds to a thrust member 21, and a groove is formed between two adjacent teeth 12. During the process of placing the iron core 10 into the mounting groove, the groove avoids the thrust member 21.

[0046] like Figure 2 As shown, the magnetic levitation bearing also includes a magnet 30, which is disposed in the groove. The main body 11 and the radial ring 20 limit the magnet 30.

[0047] With this setup, after placing the iron core 10 into the mounting slot and rotating it at a set angle, the magnet 30 is inserted into the slot, so that the magnet 30 is located between the main body 11 and the radial ring 20, thus limiting the position of the magnet 30.

[0048] like Figure 5 As shown, the magnetic levitation bearing also includes a retaining ring 40 and a magnet 30. The magnet 30 is located in the mounting groove. The retaining ring 40 is connected to the radial ring 20, and the retaining ring 40 and the radial ring 20 axially limit the magnet 30.

[0049] With this configuration, the retaining ring 40 is fixedly connected to the radial ring 20, and the retaining ring 40 axially limits the magnet 30, so that the magnet 30 is fixed in the mounting groove.

[0050] like Figure 5 As shown, the retaining ring 40 includes a connecting ring 41 and a sector tooth 42. Multiple sector teeth 42 are distributed on the outer circumferential surface of the connecting ring 41. There are multiple thrust members 21. There is a relief groove between two adjacent thrust members 21. The magnet 30 corresponds to the relief groove. The sector teeth 42 cooperate with the relief groove to limit the movement of the magnet 30.

[0051] With this configuration, the retaining ring 40 includes a connecting ring 41 and fan-shaped teeth 42 distributed along the outer circumference of the connecting ring 41. There is a relief groove between two adjacent thrust members 21. The fan-shaped teeth 42 cooperate with the relief groove, so that the fan-shaped teeth 42 axially limit the magnet 30, making the magnet 30 unable to come out.

[0052] like Figure 2As shown, the magnetic levitation bearing also includes a fastener 50, which secures the retaining ring 40 to the radial ring 20. The radial ring 20 is configured such that a threaded hole is provided at the location of the relief groove, and the sector teeth 42 have mounting holes. The fastener secures the retaining ring 40 to the radial ring together through the threaded hole and the mounting hole.

[0053] like Figure 4 As shown, the main body 11 includes a main ring 111 and a plurality of winding teeth 112. The winding teeth 112 are disposed inside the main ring 111 and the plurality of winding teeth 112 are distributed along the circumference of the main ring 111. The winding teeth 112 are used to wind the winding.

[0054] With this configuration, multiple winding teeth 112 are distributed circumferentially along the main ring 111, with each winding tooth 112 corresponding to a magnet 30. The winding is wound around the winding teeth 112.

[0055] According to another aspect of the present invention, a magnetic levitation motor is provided, the magnetic levitation motor including a housing, a rotor and the aforementioned magnetic levitation bearing, wherein the rotor shaft passes through the iron core 10 of the magnetic levitation bearing.

[0056] With this configuration, the rotor's shaft passes through the iron core 10 of the magnetic levitation bearing, causing the rotor to levitate and rotate. Both the rotor and the magnetic levitation bearing are housed within the outer casing.

[0057] According to another aspect of the present invention, an assembly method is provided for the above-described magnetic levitation bearing, comprising:

[0058] S10: Wrap the coil around the iron core 10 to form a winding;

[0059] S20: Align the teeth 12 of the iron core 10 with the relief groove of the radial ring 20 and place the iron core 10 into the mounting groove.

[0060] S30: Rotate the iron core 10 by a set angle so that the thrust member 21 stops the tooth 12 and the groove of the iron core 10 corresponds to the relief groove.

[0061] S40: Place the magnet 30 into the slot of the iron core 10;

[0062] S50: Align the sector teeth 42 of the retaining ring 40 with the relief groove so that the sector teeth 42 stop the magnet 30, and fix the retaining ring 40 to the radial ring 20.

[0063] This configuration involves wrapping the coil around the iron core 10 to form a winding. The teeth of the iron core 10 are then aligned with the clearance groove of the radial ring 20, allowing the clearance groove to accommodate the teeth 12, thus smoothly placing the iron core 10 into the mounting slot. After placing the iron core 10 into the clearance groove, a set angle is rotated so that the teeth 12 coincide with the thrust member 21, which limits the movement of the teeth 12. The magnet 30 is then placed into the groove of the iron core 10, with each magnet corresponding to one of the winding teeth 112. This aligns the fan-shaped teeth 42 of the retaining ring 40 with the clearance groove, fixing the retaining ring 40 to the radial ring 20. The fan-shaped teeth 42 then stop the magnet 30, achieving the assembly of the magnetic levitation bearing without the need for heat-fitting, thus avoiding the protrusion of the iron core 10 caused by the springback of the radial ring 20. This configuration facilitates assembly, allows for quick disassembly or replacement of parts, and improves work efficiency.

[0064] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0065] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0066] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0067] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0068] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0069] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

Claims

1. A magnetic levitation bearing, characterized in that, include: Iron core (10), the iron core (10) includes a body (11) and teeth (12) protruding from the body (11). A radial ring (20) having a mounting groove and a thrust member (21) is provided. The iron core (10) is mounted in the mounting groove, and the thrust member (21) limits the teeth (12) to prevent the iron core (10) from coming out of the mounting groove. There are multiple teeth (12), and the multiple teeth (12) are distributed around the body (11). The space between two adjacent teeth (12) forms a groove. The magnetic levitation bearing also includes a magnet (30), which is disposed in the groove, and the main body (11) and the radial ring (20) limit the magnet (30).

2. The magnetic levitation bearing according to claim 1, characterized in that, The radial ring (20) further includes a first ring (22) and a second ring (23), the first ring (22) and the second ring (23) are connected, the first ring (22) and the second ring (23) surround to form the mounting groove, the first ring (22) is used to circumferentially limit the iron core (10), and the second ring (23) is used to radially limit the iron core (10).

3. The magnetic levitation bearing according to claim 2, characterized in that, One end of the thrust member (21) is connected to the end face of the second ring (23) away from the first ring (22). There are multiple thrust members (21), and the multiple thrust members (21) are distributed circumferentially along the second ring (23).

4. The magnetic levitation bearing according to claim 1, characterized in that, There are multiple teeth (12) and thrust members (21), and there is a clearance groove between two adjacent thrust members (21). The clearance groove is used to avoid the teeth (12). When the teeth (12) correspond to the clearance groove, the iron core (10) can be placed in the mounting groove. Then the iron core (10) is rotated by a set angle so that the thrust members (21) stop the teeth (12). Multiple teeth (12) correspond one-to-one with multiple thrust members (21).

5. The magnetic levitation bearing according to claim 1, characterized in that, The magnetic levitation bearing also includes a retaining ring (40) and a magnet (30). The magnet (30) is located in the mounting groove. The retaining ring (40) is connected to the radial ring (20). The retaining ring (40) and the radial ring (20) axially limit the magnet (30).

6. The magnetic levitation bearing according to claim 5, characterized in that, The retaining ring (40) includes a connecting ring (41) and a fan-shaped tooth (42). Multiple fan-shaped teeth (42) are distributed on the outer circumferential surface of the connecting ring (41). There are multiple thrust members (21). There is a relief groove between two adjacent thrust members (21). The magnet (30) corresponds to the relief groove. The fan-shaped tooth (42) cooperates with the relief groove to limit the magnet (30).

7. The magnetic levitation bearing according to claim 5, characterized in that, The magnetic levitation bearing also includes a fastener (50) that secures the retaining ring (40) to the radial ring (20).

8. The magnetic levitation bearing according to claim 1, characterized in that, The main body (11) includes a main ring (111) and a plurality of winding teeth (112). The winding teeth (112) are disposed inside the main ring (111) and the plurality of winding teeth (112) are distributed circumferentially along the main ring (111). The winding teeth (112) are used to wind the winding.

9. A magnetic levitation motor, characterized in that, The magnetic levitation motor includes a housing, a rotor, and a magnetic levitation bearing as described in any one of claims 1 to 8, wherein the shaft of the rotor passes through the iron core (10) of the magnetic levitation bearing.

10. An assembly method, characterized in that, The magnetic levitation bearing according to any one of claims 1 to 8 comprises: S10: The coil is fitted onto the iron core (10) to form a winding; S20: Align the teeth (12) of the iron core (10) with the relief groove of the radial ring (20) and place the iron core (10) into the mounting groove; S30: Rotate the iron core (10) by a set angle so that the thrust member (21) stops the tooth (12) and the groove of the iron core (10) corresponds to the relief groove; S40: Place the magnet (30) into the slot of the iron core (10); S50: Align the sector teeth (42) of the retaining ring (40) with the relief groove so that the sector teeth (42) stop the magnet (30) and fix the retaining ring (40) to the radial ring (20).

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