A magnetic levitation bearing lamination assembly with positioning function

Abstract

The utility model discloses a kind of magnetic suspension bearing lamination assemblies with positioning function, it includes lamination assembly body, the middle part of lamination assembly body is through being set and is placed with cavity, placed cavity is used to accommodate radial coil, and insulating layer is arranged between radial coil and the inside surface of lamination assembly body;Lamination assembly body outer edge surface is equipped with positioning member, the inside surface of magnetic bearing stator is set with positioning groove, the height of each positioning member is not more than the depth of corresponding positioning groove, and lamination assembly body is installed on magnetic bearing stator by the cooperation of positioning member and corresponding positioning groove.Lamination assembly body of the above-mentioned magnetic suspension bearing lamination assembly with positioning function is installed on magnetic bearing stator by the cooperation of positioning member and positioning groove, the contact area and connection strength between lamination assembly body and magnetic bearing stator increase, can effectively prevent lamination assembly body from loosening, misplacement or rotation inside magnetic bearing stator, and enhance the overall stability of the internal structure of magnetic suspension bearing.

Description

Technical Field

[0001] This utility model belongs to the field of magnetic levitation bearing technology, and in particular relates to a magnetic levitation bearing stack assembly with positioning function. Background Technology

[0002] In practical applications of magnetic levitation bearings, the laminated assembly plays a core role in constructing the magnetic conduction circuit and optimizing electromagnetic properties. The precisely designed laminated structure effectively optimizes the uniformity of the magnetic field distribution and improves mechanical stiffness. The lamination process used suppresses eddy current losses and enhances dynamic stability, providing reliable support for the rotor under high-speed operating conditions. The magnetic levitation bearing laminated assembly needs to be assembled onto the magnetic bearing stator. Inaccurate positioning during assembly can degrade the performance of the magnetic levitation bearing or even prevent it from functioning properly. Therefore, accurate positioning is a crucial prerequisite for the normal operation of magnetic levitation bearings.

[0003] Currently, the installation and positioning of existing magnetic levitation bearing lamination assemblies mostly adopts the technique of opening keyways on silicon steel lamination assemblies and magnetic bearing stators, and using locating keys to assist in installation. Although this improves the installation accuracy to a certain extent, the locating keys only play a temporary fixing role during the installation process. After positioning, the locating keys need to be removed. Removing the locating keys may lead to an increase in the fit clearance between the lamination assembly and the stator. Under high-speed operation or vibration environment, this may not only easily cause loosening or displacement, affecting the air gap accuracy and connection strength of the magnetic levitation system, but also cause micro-deformation of the lamination assembly due to residual stress after removing the locating keys, thereby reducing the magnetic circuit symmetry and increasing eddy current losses. Utility Model Content

[0004] The purpose of this invention is to provide a magnetic levitation bearing stack assembly with positioning function to solve the problem that the conventional magnetic levitation bearing stack assembly in the prior art will affect the connection strength of the magnetic levitation system after the positioning key is removed.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A magnetic levitation bearing lamination assembly with positioning function is mounted on a magnetic bearing stator. The magnetic levitation bearing lamination assembly with positioning function includes a lamination assembly body, which is a cylindrical structure extending along a first horizontal direction, wherein:

[0007] A placement cavity is provided through the middle of the lamination assembly body. The placement cavity is configured to accommodate a radial coil. An insulating layer is provided between the radial coil and the inner surface of the lamination assembly body.

[0008] At least one positioning element extends radially outward on the outer edge surface of the first end of the lamination assembly body along the first horizontal direction. At least one positioning groove is provided on the inner side surface of the magnetic bearing stator. Each positioning element corresponds to one positioning groove. The height of each positioning element is not greater than the depth of the corresponding positioning groove. The lamination assembly body is installed on the magnetic bearing stator through the cooperation of the positioning element and the corresponding positioning groove.

[0009] Furthermore, the positioning element is a rectangular protrusion, and the positioning groove is a rectangular groove that matches the rectangular protrusion.

[0010] Furthermore, the positioning element is a wedge-shaped structure in general. The first end of the wedge-shaped structure is located on the outer circular surface of the stacked assembly body, and the second end of the wedge-shaped structure extends toward the side away from the outer circular surface. The cross-sectional area of ​​the first end of the wedge-shaped structure is larger than the cross-sectional area of ​​the second end of the wedge-shaped structure, and the positioning groove is a wedge-shaped groove adapted to the wedge-shaped structure.

[0011] Furthermore, both ends of the lamination assembly body along the first horizontal direction are provided with insulating components. When installing the coil, the coil is insulated from the lamination assembly body through the insulating components.

[0012] Furthermore, the positioning element is flush with the end face of the first end of the stacked assembly body along the first horizontal direction.

[0013] Furthermore, the insulating layer is insulating paper or insulating pad, and the insulating layer as a whole is an annular structure adapted to the inner surface of the stacked assembly body. The insulating layer is laid on the inner surface of the stacked assembly body.

[0014] Furthermore, the insulating component is an insulating end plate, and both insulating end plates are annular structures adapted to the end face of the laminated assembly body. The two insulating end plates are detachably installed at both ends of the laminated assembly body along the first horizontal direction.

[0015] Compared with existing technologies, the advantages of the magnetic levitation bearing stack assembly with positioning function are as follows:

[0016] 1) By setting a positioning element on the outer edge surface of the first end of the lamination assembly body, and opening a positioning groove on the inner side of the magnetic bearing stator, the lamination assembly body is installed on the magnetic bearing stator through the cooperation of the positioning element and the corresponding positioning groove. The contact area and connection strength between the lamination assembly body and the magnetic bearing stator are increased, which can effectively prevent the lamination assembly body from loosening, misaligning or rotating inside the magnetic bearing stator, and enhance the overall stability of the internal structure of the magnetic levitation bearing.

[0017] 2) By providing insulating components at both ends of the lamination assembly body along the first horizontal direction, the coil is insulated from the lamination assembly body, and the coil is prevented from rubbing against the two ends of the lamination assembly body during installation, thus improving the service life of the lamination assembly body. Attached Figure Description

[0018] To more clearly illustrate and understand the technical solutions in the embodiments of this utility model, the accompanying drawings used in the background technology and embodiment description of this utility model will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the magnetic levitation bearing stack assembly with positioning function provided in this embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the magnetic levitation bearing stack assembly with positioning function provided in this embodiment of the utility model;

[0021] Figure 3 This is a front view schematic diagram of a magnetic levitation bearing stack assembly with positioning function provided in an embodiment of this utility model;

[0022] Figure 4 This is a cross-sectional schematic diagram of a magnetic levitation bearing stack assembly with positioning function provided in an embodiment of this utility model. Detailed Implementation

[0023] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] To facilitate understanding of this utility model, a more complete description of it will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model. It should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or there may be an intermediate component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or there may be an intermediate component. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of this utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] Please see Figures 1 to 4 As shown, in this embodiment, a magnetic levitation bearing lamination assembly with positioning function is mounted on a magnetic bearing stator 10. The magnetic levitation bearing lamination assembly with positioning function includes a lamination assembly body 20, which is positioned along a first horizontal direction (…). Figure 1 The stacked assembly body 20 has a cylindrical structure extending in the X direction, wherein: a placement cavity 21 is provided through the middle of the stacked assembly body 20, the placement cavity 21 is configured to accommodate a radial coil 30, and an insulating layer (not shown in the figure) is provided between the radial coil 30 and the inner side surface of the stacked assembly body 20; at least one positioning element 40 extends radially outward on the outer edge surface of the first end of the stacked assembly body 20 in the first horizontal direction, and at least one positioning groove 50 is provided on the inner side surface of the magnetic bearing stator 10, each positioning element 40 corresponds to one positioning groove 50, and the height of each positioning element 40 is not greater than the depth of the corresponding positioning groove 50. The stacked assembly body 20 is mounted on the magnetic bearing stator 10 through the cooperation of the positioning element 40 and the corresponding positioning groove 50.

[0026] Specifically, the stacked assembly body 20 is made of magnetic material, and the positioning element 40 and the positioning groove 50 are interference fit.

[0027] Specifically, the shape, size, material, and processing technology of the stacked assembly body 20 can be flexibly set according to different functions and requirements.

[0028] It should be noted that: there can be two positioning elements 40, with the two positioning elements 40 spaced 180° apart, or there can be three positioning elements 40, with the adjacent positioning elements 40 spaced 120° apart. Of course, there can also be four positioning elements 40, etc. The number of positioning elements 40 will not be elaborated here. The more positioning elements 40 there are, the higher the installation accuracy requirement for the stacked assembly body 20. Therefore, setting one positioning element 40 in this application is optimal, which can not only achieve the positioning of the stacked assembly body 20, but also facilitate installation.

[0029] As can be seen, by setting a positioning element 40 on the outer edge surface of the first end of the laminated assembly body 20, and opening a positioning groove 50 on the inner side of the magnetic bearing stator 10, the laminated assembly body 20 is installed on the magnetic bearing stator 10 through the cooperation of the positioning element 40 and the corresponding positioning groove 50. The contact area and connection strength between the laminated assembly body 20 and the magnetic bearing stator 10 are increased, which can effectively prevent the laminated assembly body 20 from loosening, misaligning or rotating inside the magnetic bearing stator 10, and enhance the overall stability of the internal structure of the magnetic levitation bearing.

[0030] In one implementation, the positioning element 40 is a rectangular protrusion, and the positioning groove 50 is a rectangular groove that matches the rectangular protrusion.

[0031] As can be seen, by setting the positioning element 40 as a rectangular protrusion and the positioning groove 50 as a rectangular recess, a simple and effective positioning method is provided on the basis of achieving positioning.

[0032] In one embodiment, the positioning member 40 is a wedge-shaped structure in general. The first end of the wedge-shaped structure is located on the outer circular surface of the stacked assembly body 20, and the second end of the wedge-shaped structure extends toward the side away from the outer circular surface. The cross-sectional area of ​​the first end of the wedge-shaped structure is larger than the cross-sectional area of ​​the second end of the wedge-shaped structure. The positioning groove 50 is a wedge-shaped groove that is adapted to the wedge-shaped structure.

[0033] As can be seen, by setting the positioning component 40 as a wedge-shaped structure and the positioning groove 50 as a wedge-shaped groove, a positioning method with good positioning stability is provided on the basis of achieving positioning.

[0034] Of course, the positioning component 40 can also be pyramidal in shape, but the overall shape of the positioning component 40 will not be described in detail here.

[0035] In one embodiment, the lamination assembly body 20 is provided with insulating members 60 at both ends along the first horizontal direction. When the coil is installed, the coil is insulated from the lamination assembly body 20 through the insulating members 60.

[0036] It can be seen that by providing insulating parts 60 at both ends of the lamination assembly body 20 along the first horizontal direction, on the one hand, the coil is insulated from the lamination assembly body 20, and on the other hand, the coil is prevented from rubbing against the two ends of the lamination assembly body 20 during installation, thereby improving the service life of the lamination assembly body 20.

[0037] In one implementation, the positioning member 40 is flush with the end face of the first end of the stacked assembly body 20 along the first horizontal direction.

[0038] In one implementation, the insulating layer is insulating paper or insulating pad, and the insulating layer as a whole is an annular structure adapted to the inner surface of the laminated assembly body 20. The insulating layer is laid on the inner surface of the laminated assembly body 20.

[0039] Specifically, the insulation layer has good insulation properties.

[0040] In one embodiment, the insulating member 60 is an insulating end plate. Both insulating end plates are annular structures adapted to the end face of the laminated assembly body 20. The two insulating end plates are detachably installed at both ends of the laminated assembly body 20 along the first horizontal direction.

[0041] Specifically, the insulating end plate is made of plastic, or other insulating plates with good insulation performance and wear resistance.

[0042] It should be noted that the technical solution adopted in this application has the following technical effects:

[0043] 1) Improved structural stability: After the positioning component 40 is embedded in the positioning groove 50, a reliable mechanical connection is formed between the two. The contact area and connection strength between the lamination assembly body 20 and the magnetic bearing stator 10 are increased, which can effectively prevent the lamination assembly body 20 from loosening, misaligning or rotating inside the magnetic bearing stator 10, and enhance the overall stability of the internal structure of the magnetic levitation bearing.

[0044] 2) Improved assembly accuracy: The traditional assembly of the lamination assembly body 20 relies on the machining accuracy of the parts and manual adjustment and positioning, resulting in large cumulative errors. However, the precise cooperation between the positioning part 40 and the positioning groove 50 has a clear guiding and limiting function, ensuring the accurate alignment of the axial and circumferential positions of the lamination assembly in the groove of the magnetic bearing stator 10. Moreover, the air gap uniformity error after assembly can be controlled within ±0.05mm, which is significantly better than the traditional positioning method.

[0045] 3) Improved assembly convenience and efficiency: The lamination assembly body 20 has a built-in positioning component 40, eliminating the dependence on external positioning tools and reducing assembly time by 30%-50%; the structural design of the positioning component 40 and the positioning groove 50 makes it easier to align the lamination assembly body 20 with the magnetic bearing stator 10, reducing the time spent on repeated trial assembly and adjustment, making the assembly operation more intuitive and standardized, reducing the difficulty of operation, and improving assembly efficiency.

[0046] When assembling the aforementioned magnetic levitation bearing lamination assembly with positioning function: First, insulating elements 60 are installed at both ends of the lamination assembly body 20, which is equipped with positioning elements 40, along the first horizontal direction; second, the insulating layer is placed on the inner side of the lamination assembly body 20, and the radial coil 30 is placed close to the insulating layer in the placement cavity 21. After placement, the radial coil 30 is tied to ensure stability; then, the assembled lamination assembly body 20 is potted to enhance its stability; finally, the potted magnetic levitation lamination assembly is assembled into the heated magnetic bearing stator 10. During assembly, the positioning elements 40 on the lamination assembly body 20 need to be aligned with the positioning grooves 50 on the inner side of the magnetic bearing stator 10 to ensure smooth assembly onto the magnetic bearing stator 10.

[0047] The above embodiments merely illustrate the basic principles and characteristics of this utility model. This utility model is not limited to the above examples. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A magnetic levitation bearing lamination assembly with positioning function, wherein the magnetic levitation bearing lamination assembly is mounted on a magnetic bearing stator, characterized in that, The magnetic levitation bearing lamination assembly with positioning function includes a lamination assembly body, which is a cylindrical structure extending along a first horizontal direction, wherein: A placement cavity is provided through the middle of the lamination assembly body. The placement cavity is configured to accommodate a radial coil. An insulating layer is provided between the radial coil and the inner surface of the lamination assembly body. At least one positioning element extends radially outward on the outer edge surface of the first end of the lamination assembly body along the first horizontal direction. At least one positioning groove is provided on the inner side surface of the magnetic bearing stator. Each positioning element corresponds to one positioning groove. The height of each positioning element is not greater than the depth of the corresponding positioning groove. The lamination assembly body is installed on the magnetic bearing stator through the cooperation of the positioning element and the corresponding positioning groove.

2. The magnetic levitation bearing stack assembly with positioning function according to claim 1, characterized in that, The positioning element is a rectangular protrusion, and the positioning groove is a rectangular groove that matches the rectangular protrusion.

3. The magnetic levitation bearing stack assembly with positioning function according to claim 1, characterized in that, The positioning component is a wedge-shaped structure. The first end of the wedge-shaped structure is located on the outer circular surface of the stacked assembly body, and the second end of the wedge-shaped structure extends toward the side away from the outer circular surface. The cross-sectional area of ​​the first end of the wedge-shaped structure is larger than the cross-sectional area of ​​the second end of the wedge-shaped structure. The positioning groove is a wedge-shaped groove adapted to the wedge-shaped structure.

4. The magnetic levitation bearing stack assembly with positioning function according to claim 1, characterized in that, Insulating elements are provided at both ends of the lamination assembly body along the first horizontal direction. When the coil is installed, the coil is insulated from the lamination assembly body through the insulating elements.

5. The magnetic levitation bearing stack assembly with positioning function according to claim 1, characterized in that, The positioning element is flush with the end face of the first end of the stacked assembly body along the first horizontal direction.

6. The magnetic levitation bearing stack assembly with positioning function according to claim 1, characterized in that, The insulating layer is insulating paper or insulating pad, and the insulating layer as a whole is an annular structure adapted to the inner surface of the stacked assembly body. The insulating layer is laid on the inner surface of the stacked assembly body.

7. The magnetic levitation bearing stack assembly with positioning function according to claim 4, characterized in that, The insulating component is an insulating end plate. Both insulating end plates are annular structures adapted to the end face of the laminated assembly body. The two insulating end plates are detachably installed at both ends of the laminated assembly body along the first horizontal direction.

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