Novel axial magnetic flux permanent magnet motor bearing structure

Abstract

The utility model discloses a novel bearing structure of an axial magnetic flux permanent magnet motor, and belongs to the technical field of motor bearing structures. A novel bearing structure of an axial magnetic flux permanent magnet motor comprises a motor shell, a first stator and a second stator are fixedly connected in the motor shell, a rotor is rotatably connected in the motor shell, gaps between the first stator and the rotor are a first air gap, gaps between the second stator and the rotor are a second air gap, and a motor shaft is rotatably connected in the motor shell. The motor shaft is fixedly connected with the rotor, and a front thrust bearing and a rear thrust bearing are respectively arranged in gaps between the rotor and the motor shell; the thrust bearings are installed at the two ends of the rotor and used for limiting the first air gap and the second air gap, the front bearing and the rear bearing are installed at the two ends of the motor shaft and used for supporting the motor shaft to rotate and transmitting torque, the two sets of bearing structures are adopted, the air gaps on the two sides can be limited to be equal, and the influence of thermal expansion of the motor shaft on the air gaps can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of motor bearing structures, in particular to a novel bearing structure of an axial flux permanent magnet motor. Background Art

[0002] The air gap between the stator and rotor of the flux permanent magnet motor is axially distributed. A conventional set of bearings is not suitable for axial flux motors. The air gaps on both sides of the flux permanent magnet motor must be the same, otherwise it will directly affect the performance of the motor and cause excessive axial force load on the motor.

[0003] Therefore, a novel bearing structure of an axial flux permanent magnet motor is provided to ensure that the air gaps on both sides are the same. Utility Model Content

[0004] The purpose of the utility model is to solve the problems raised in the above background technology and to propose a new bearing structure of an axial flux permanent magnet motor.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A novel bearing structure of an axial flux permanent magnet motor comprises a motor housing, wherein a stator 1 and a stator 2 are fixedly connected in the motor housing, a rotor is rotatably connected in the motor housing, gaps between the stator 1 and the stator 2 and the rotor are respectively air gap 1 and air gap 2, a motor shaft is rotatably connected in the motor housing, and the motor shaft is fixedly connected to the rotor, and further comprises:

[0007] A front thrust bearing and a rear thrust bearing are respectively installed at the gap between the rotor and the motor housing, and the front thrust bearing and the rear thrust bearing are respectively used to define air gap one and air gap two;

[0008] A front bearing and a rear bearing are connected to both ends of the motor shaft, and the front bearing and the rear bearing are responsible for supporting the rotation of the motor shaft and transmitting torque.

[0009] For ease of installation, preferably, a front end cover and a rear end cover are respectively installed on both ends of the motor housing, and one end of the front bearing and the rear bearing are respectively abutted against the front end cover and the rear end cover.

[0010] In order to facilitate the use of the motor, preferably, a front bearing cover and a rear bearing cover are respectively installed on the front cover and the rear cover, and one end of the motor shaft passes through the front bearing cover.

[0011] For ease of use, preferably, the gaps between the front bearing cover, the rear bearing cover and the front bearing and the rear bearing are axial thermal expansion gap one and axial thermal expansion gap two, respectively.

[0012] Compared with the prior art, the utility model provides a new bearing structure of an axial flux permanent magnet motor, which has the following beneficial effects:

[0013] The utility model uses a thrust bearing and front and rear bearings. The thrust bearings are installed at both ends of the rotor and are responsible for limiting air gap one and air gap two. The front and rear bearings are installed at both ends of the motor shaft and are responsible for supporting the rotation of the motor shaft and transmitting torque. The use of two sets of bearing structures can not only limit the air gaps on both sides to be equal, but also reduce the influence of thermal expansion of the motor shaft on the air gap. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the bearing structure of a novel axial flux permanent magnet motor proposed in the utility model Figure 1 ;

[0015] Figure 2 A new type of bearing structure of axial flux permanent magnet motor proposed by the utility model Figure 1 Schematic diagram of the structure of part A;

[0016] Figure 3 A schematic diagram of the bearing structure of a novel axial flux permanent magnet motor proposed in the utility model Figure 2 ;

[0017] Figure 4 A new type of bearing structure for axial flux permanent magnet motor proposed by the utility model Figure 3 The structural diagram of part B;

[0018] Figure 5 A new type of bearing structure for axial flux permanent magnet motor proposed by the utility model Figure 3 Schematic diagram of the structure of part C.

[0019] In the figure: 1, motor housing; 101, stator one; 102, stator two; 103, rotor; 104, motor shaft; 201, front end cover; 202, rear end cover; 301, front bearing cover; 302, rear bearing cover; 401, front thrust bearing; 402, rear thrust bearing; 501, front bearing; 502, rear bearing; 601, air gap one; 602, air gap two; 701, axial thermal expansion gap one; 702, axial thermal expansion gap two. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Example:

[0022] Reference Figure 1-5A bearing structure of a novel axial flux permanent magnet motor includes a motor housing 1, a stator 101 and a stator 102 are fixedly connected in the motor housing 1, a rotor 103 is rotatably connected in the motor housing 1, the gaps between the stator 101, the stator 102 and the rotor 103 are respectively air gap 1 601 and air gap 2 602, a motor shaft 104 is rotatably connected in the motor housing 1, the motor shaft 104 is fixedly connected to the rotor 103, and further includes: a front thrust bearing 401 and a rear thrust bearing 402 are respectively installed in the gap between the rotor 103 and the motor housing 1, the front thrust bearing 401 and the rear thrust bearing 402 are respectively used to define the air gap 1 601 and the air gap 2 602; both ends of the motor shaft 104 A front bearing 501 and a rear bearing 502 are connected to the motor housing 1, and the front bearing 501 and the rear bearing 502 are responsible for supporting the rotation of the motor shaft 104 and transmitting torque. A front end cover 201 and a rear end cover 202 are respectively installed at both ends of the motor housing 1, and one end of the front bearing 501 and the rear bearing 502 are respectively abutted against the front end cover 201 and the rear end cover 202, and a front bearing cover 301 and a rear bearing cover 302 are respectively installed on the front end cover 201 and the rear end cover 202. One end of the motor shaft 104 passes through the front bearing cover 301, and the gaps between the front bearing cover 301, the rear bearing cover 302 and the front bearing 501 and the rear bearing 502 are axial thermal expansion gap one 701 and axial thermal expansion gap two 702 respectively.

[0023] When installing this device, Figure 1 After installation, the front thrust bearing 401 and the rear thrust bearing 402 will be used to limit the size of the air gap 1 601 and the air gap 2 602 respectively, so that they always remain consistent. At the same time, the front bearing 501 and the rear bearing 502 are installed at both ends of the motor shaft 104, responsible for supporting the rotation of the motor shaft 104 and transmitting torque.

[0024] The utility model uses a thrust bearing and a front bearing 501 and a rear bearing 502. The thrust bearing is installed at both ends of the rotor 103 and is responsible for limiting the air gap 1 601 and the air gap 2 602. The front bearing 501 and the rear bearing 502 are installed at both ends of the motor shaft 104 and are responsible for supporting the rotation of the motor shaft 104 and transmitting torque. The use of two sets of bearing structures can not only limit the air gaps on both sides to be equal, but also reduce the influence of thermal expansion of the motor shaft 104 on the air gap.

[0025] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the technical solution and inventive concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A novel bearing structure of an axial flux permanent magnet motor, comprising a motor housing (1), wherein a stator 1 (101) and a stator 2 (102) are fixedly connected in the motor housing (1), a rotor (103) is rotatably connected in the motor housing (1), the gaps between the stator 1 (101), the stator 2 (102) and the rotor (103) are respectively air gap 1 (601) and air gap 2 (602), a motor shaft (104) is rotatably connected in the motor housing (1), and the motor shaft (104) is fixedly connected to the rotor (103), characterized in that: Also includes: A front thrust bearing (401) and a rear thrust bearing (402) are respectively installed at the gap between the rotor (103) and the motor housing (1), and the front thrust bearing (401) and the rear thrust bearing (402) are respectively used to define an air gap 1 (601) and an air gap 2 (602); A front bearing (501) and a rear bearing (502) are respectively connected to both ends of the motor shaft (104), and the front bearing (501) and the rear bearing (502) are both responsible for supporting the rotation of the motor shaft (104) and transmitting torque.

2. A novel axial flux permanent magnet motor bearing structure according to claim 1, characterized in that: A front end cover (201) and a rear end cover (202) are respectively mounted on both ends of the motor housing (1), and one end of the front bearing (501) and the rear bearing (502) are respectively abutted against the front end cover (201) and the rear end cover (202).

3. A novel axial flux permanent magnet motor bearing structure according to claim 2, characterized in that: A front bearing cover (301) and a rear bearing cover (302) are respectively mounted on the front end cover (201) and the rear end cover (202), and one end of the motor shaft (104) passes through the front bearing cover (301).

4. A novel axial flux permanent magnet motor bearing structure according to claim 3, characterized in that: The gaps between the front bearing cover (301), the rear bearing cover (302) and the front bearing (501) and the rear bearing (502) are axial thermal expansion gap one (701) and axial thermal expansion gap two (702), respectively.

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