Thrust bearing with wound iron core

Abstract

The utility model relates to the field of magnetic suspension motors, in particular to a thrust bearing with a wound iron core. The thrust bearing is provided with a stator iron core, a magnet exciting coil and a thrust disc; the thrust disc is arranged in the middle of the thrust bearing, the two groups of stator iron cores are manufactured in a winding forming mode, are arranged on the thrust bearing and are located on the two sides of the thrust disc, one surface, close to the thrust disc, of each stator iron core is provided with an annular groove, and the excitation coil is arranged in the annular groove. The power consumption of the thrust bearing can be reduced in a winding forming mode.

Description

Technical Field

[0001] The utility model relates to the field of magnetic levitation motors, in particular to a thrust bearing for a wound iron core. Background Art

[0002] In the field of magnetic levitation motors, the structure of an active thrust magnetic bearing is that two stators are respectively arranged on both sides of a thrust disc. The stator is composed of a stator iron core and an exciting coil. The exciting coil is installed in the annular groove of the stator iron core. The electromagnetic forces generated by the stators on the left and right sides respectively act on the two end faces of the thrust disc, so as to balance the axial forces in different directions. Most of the stator iron cores are made by machining a whole piece of low-carbon steel material. Using the whole piece of material as the iron core of the electromagnet results in large iron loss, large eddy current loss and high power consumption of the thrust magnetic bearing. Content of the Utility Model

[0003] In order to solve the above technical problems, the purpose of the utility model is to provide a thrust bearing with a wound iron core, which can reduce the power consumption of the thrust bearing through a winding forming method.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A thrust bearing with a wound iron core, which is provided with a stator iron core, an exciting coil and a thrust disc; the thrust disc is arranged in the middle of the thrust bearing, and there are two groups of stator iron cores which are both made by winding forming and are arranged on the thrust bearing and located on both sides of the thrust disc. An annular groove is arranged on the surface of the stator iron core close to the thrust disc, and the exciting coil is installed in the annular groove.

[0006] Preferably, the stator iron core is made by winding strip silicon steel sheets. After winding a certain thickness on the inner side, the width of the silicon steel sheet decreases and continues to wind. After winding to the required thickness, the width of the silicon steel sheet is restored and continues to wind, and finally a wound stator iron core with an annular groove in the middle is formed.

[0007] In summary, the advantages of the utility model are as follows:

[0008] The stator iron core of the wound iron core thrust magnetic bearing is made by winding strip silicon steel sheets, which reduces the iron loss, can significantly reduce the eddy current loss, and reduces the power consumption of the thrust magnetic bearing. Description of the Drawings

[0009] Figure 1 It is a schematic cross-sectional structure diagram of the thrust bearing;

[0010] Figure 2 It is a schematic structural diagram of the winding method of the stator iron core;

[0011] Figure 3 It is a schematic structural diagram of the strip silicon steel sheet of the stator iron core unfolded;

[0012] Reference numerals: 1, stator core; 2, excitation coil; 3, thrust disk; 4, annular groove. Specific embodiments

[0013] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0014] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0015] At the same time, it should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0016] Next, a detailed description of the specific embodiments of the present utility model will be given in conjunction with the accompanying drawings.

[0017] As Figures 1 to 3 shown, a thrust bearing for a wound core, the thrust bearing includes a bearing body arranged horizontally as shown in the figure, and a stator core 1, an excitation coil 2 and a thrust disk 3 are provided on the bearing body.

[0018] The thrust disk 3 is arranged in the middle of the thrust bearing. There are two groups of stator cores 1, both of which are made by winding and are arranged on the thrust bearing and on both sides of the thrust disk 3. An annular groove 4 is provided on the surface of the stator core 1 close to the thrust disk 3, and the excitation coil 2 is arranged in the annular groove 4.

[0019] As Figures 1 to 3 shown, among them, since the core loss of a whole low-carbon steel material is large, and the stator core 1 is made by winding strip silicon steel, it can effectively reduce the core loss. After winding a certain thickness on the inner side, the width of the silicon steel sheet decreases and continues to wind. After reaching the required winding thickness, the width of the silicon steel sheet is restored and winding continues, finally forming the wound stator core 1 with the middle annular groove 4. The thrust bearing with this structure can also reduce the power consumption of the thrust magnetic bearing.

[0020] The foregoing is a description of embodiments of the present utility model. Through the above description of the disclosed embodiments, those skilled in the art can implement or use the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A thrust bearing for a wound core, characterized in that, A stator core (1), an excitation coil (2) and a thrust disk (3) are provided on the thrust bearing; the thrust disk (3) is arranged in the middle of the thrust bearing, and there are two groups of the stator cores (1), both of which are made by winding and are arranged on the thrust bearing and located on both sides of the thrust disk (3). A ring groove (4) is provided on the surface of the stator core (1) close to the thrust disk (3), and the excitation coil (2) is arranged in the ring groove (4).

2. The thrust bearing of a wound core according to claim 1, characterized in that, The stator core (1) is made by winding strip-shaped silicon steel sheets. After winding a certain thickness on the inner side, the width of the silicon steel sheets decreases and continues to wind. After winding to the required thickness, the width of the silicon steel sheets is restored and continues to wind, finally forming a wound stator core (1) with a ring groove (4) in the middle.

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