CN219351386U

CN219351386U - Magnetic steel mounting structure of axial flux disc type motor rotor disc

Info

Publication number: CN219351386U
Application number: CN202320522843.2U
Authority: CN
Inventors: 魏小勇
Original assignee: Wuxi Chuanmu Intelligent Equipment Co ltd
Current assignee: Wuxi Chuanmu Intelligent Equipment Co ltd
Priority date: 2023-03-17
Filing date: 2023-03-17
Publication date: 2023-07-14
Anticipated expiration: 2033-03-17

Abstract

The utility model relates to a magnetic steel mounting structure of an axial flux disc type motor rotor disc. The rotor disc assembly comprises a permanent magnet assembly, a rotor disc assembly used for limiting the permanent magnet assembly and a fixing mechanism used for locking the rotor disc assembly; the permanent magnet assembly is mounted in the rotor disk assembly; the securing mechanism is disposed on the rotor disk assembly. The technical problems that in the axial flux disc motor in the prior art, in the reinstallation process of a permanent magnet body on a rotor disc, special-shaped machining is needed, the machining cost of the permanent magnet is increased, and meanwhile, the permanent magnet body is directly installed on the rotor disc and is easy to damage the permanent magnet are solved.

Description

Magnetic steel mounting structure of axial flux disc type motor rotor disc

Technical Field

The utility model relates to the field of motor rotor discs, in particular to a magnetic steel mounting structure of an axial flux disc type motor rotor disc.

Background

The axial flux motor has a short axial dimension, so that the axial flux motor has wide application in the fields of elevator traction machines, automobile driving motors, wind driven generators and the like.

In order to improve the efficiency of the motor, the volume ratio of the permanent magnets in the whole axial flux motor rotor needs to be improved, and the operation reliability of the motor is directly influenced by the fixing mode of the magnetic steel on the rotor. The rotor disc of the axial flux disc motor has certain requirements on the thickness because of the strength requirement, the thickness of the permanent magnet body arranged on the rotor disc cannot be smaller than that of the rotor disc, otherwise, the stator and rotor air gap is overlarge, the motor efficiency is greatly affected, the consumption of the permanent magnet needs to be additionally increased, the permanent magnet and the rotor disc are arranged to be specially-shaped, the permanent magnet body is required to be machined, the permanent magnet machining cost is increased, and meanwhile, the permanent magnet body is directly arranged on the rotor disc and is vulnerable to damage.

Disclosure of Invention

According to the magnetic steel installation structure of the axial flux disc type motor rotor disc, the technical problem that permanent magnets are easy to damage due to the fact that permanent magnet machining cost is increased due to the fact that special-shaped machining is needed to be conducted on the permanent magnet body in the reinstallation process of the permanent magnet body on the rotor disc in the axial flux disc type motor in the prior art is solved.

The technical scheme adopted by the embodiment of the application is as follows:

the magnetic steel mounting structure of the axial flux disc type motor rotor disc comprises a permanent magnet assembly, a rotor disc assembly used for limiting the permanent magnet assembly and a fixing mechanism used for locking the rotor disc assembly; the permanent magnet assembly is mounted in the rotor disk assembly; the securing mechanism is disposed on the rotor disk assembly.

The further technical scheme is as follows: the permanent magnet assembly comprises a permanent magnet body and a magnetic pole clamping plate which is abutted in the rotor disc assembly; the magnetic pole clamping plate is arranged on the permanent magnet body.

The further technical scheme is as follows: the rotor disc assembly comprises a first rotor disc connected with the fixing mechanism and a second rotor disc sleeved on the fixing mechanism; the permanent magnet body is mounted between the first rotor disk and the second rotor disk; limiting clamping grooves matched with the magnetic pole clamping plates are formed in the first rotor disc and the second rotor disc; the magnetic pole clamping plate is embedded in the limiting clamping groove.

The further technical scheme is as follows: the fixing mechanism comprises a connecting rod arranged on the first rotor disc, a lug for abutting against the second rotor disc and a spring for buffering the lug; one end of the spring is connected with the connecting rod, and the other end of the spring is connected with the protruding block.

One or more technical solutions provided in the embodiments of the present application at least have the following technical effects or advantages:

1. due to the arrangement of the permanent magnet assembly and the rotor disc assembly, the permanent magnet assembly can be arranged in the rotor disc assembly, and meanwhile, due to the arrangement of the fixing mechanism, the rotor disc assembly can be locked, and the permanent magnet assembly is firmly clamped in the rotor disc assembly.

2. Due to the arrangement of the permanent magnet body and the magnetic pole clamping plates, the permanent magnet body can be prevented from being directly contacted with a rotor disc in the rotor disc assembly, so that the permanent magnet body is protected, meanwhile, the magnetic pole clamping plates reduce the eddy current loss of the permanent magnet, the magnetic focusing effect can be improved, the magnetic flux density is improved, and therefore the material utilization rate of the permanent magnet, the performance and the cost performance of the whole motor are further improved.

3. Due to the arrangement of the first rotor disc and the second rotor disc, the permanent magnet assembly can be clamped between the first rotor disc and the second rotor disc, and meanwhile, the permanent magnet assembly can be fixedly arranged on the rotor disc assembly through the action of the fixing mechanism. Through the setting of spacing draw-in groove, can play spacing effect to the permanent magnet subassembly, prevent that the dislocation from appearing in the permanent magnet subassembly in the use.

4. Due to the adoption of the arrangement of the connecting rod, the convex blocks and the springs, the second rotor disc can be fixedly arranged on the connecting rod, meanwhile, the second rotor disc is ensured to be clung to the first rotor disc, and the permanent magnet assembly is clamped between the first rotor disc and the second rotor disc. The lug can compress the spring to slide in the slideway formed by the connecting rod, so that the second rotor disc can be easily taken down, and the permanent magnet assembly is convenient to detach and install in the rotor disc assembly.

Drawings

Fig. 1 is a schematic diagram of an overall structure of a magnetic steel mounting structure of a rotor disc of an axial flux disc type motor according to an embodiment of the present utility model.

FIG. 2 is a schematic view of a portion of a structure for embodying the positional relationship of a permanent magnet assembly and a rotor disk assembly in an embodiment of the present utility model.

Fig. 3 is a schematic view of a part of a structure for embodying a fixing mechanism according to an embodiment of the present utility model.

In the figure: 1. a permanent magnet assembly; 11. a permanent magnet body; 12. a magnetic pole clamping plate; 2. a rotor disk assembly; 21. a first rotor disk; 22. a second rotor disk; 221. round perforation; 23. a limit clamping groove; 3. a fixing mechanism; 31. a connecting rod; 32. a bump; 33. and (3) a spring.

Detailed Description

The technical scheme in the embodiment of the application aims to solve the problems, and the overall thought is as follows:

in order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.

The magnetic steel mounting structure of the rotor disc of the axial flux disc type motor comprises a permanent magnet assembly 1, a rotor disc assembly 2 for limiting the permanent magnet assembly 1 and a fixing mechanism 3 for locking the rotor disc assembly 2, as shown in fig. 1. The permanent magnet assembly 1 is mounted in a rotor disc assembly 2. The fixing mechanism 3 is provided on the rotor disc assembly 2.

A plurality of permanent magnet assemblies 1 arranged in a circumferential array are arranged in the rotor disc assembly 2. The rotor disc assembly 2 consists of two identical rotor discs. One rotor disc in the rotor disc assembly 2 is fixedly connected with a plurality of fixing mechanisms 3 which are arranged in a circumferential array, and the other rotor disc is sleeved on the fixing mechanism 3. When the permanent magnet assembly 1 is placed on the rotor disc provided with the fixing mechanism 3, the other rotor disc is sleeved on the fixing mechanism 3, so that the two rotor discs are fixedly connected, and the permanent magnet assembly 1 is fixedly installed in the permanent magnet assembly 1.

Through permanent magnet subassembly 1 and rotor disk subassembly 2 setting, can make permanent magnet subassembly 1 install in rotor disk subassembly 2, simultaneously owing to the setting of fixed establishment 3, can lock rotor disk subassembly 2 for permanent magnet subassembly 1 firmly holds in rotor disk subassembly 2.

As shown in fig. 2, the permanent magnet assembly 1 includes a permanent magnet body 11 and a pole clamping plate 12 that abuts in the rotor disk assembly 2. The pole clamping plates 12 are provided on the permanent magnet body 11.

The magnetic pole clamping plates 12 are clamped at the upper end and the lower end of the permanent magnet body 11 and are fixedly connected to the permanent magnet body 11, so that the permanent magnet assembly 1 forms a sandwich biscuit structure. The pole clamping plates 12 are made of magnetic conductive materials, so that the consumption of the permanent magnets is reduced. If the special-shaped processing of the permanent magnet assembly 1 is needed, the special-shaped processing can be performed on the magnetic pole clamping plate 12, so that the processing cost of the permanent magnet body 11 is reduced (the processing difficulty and the processing cost of the permanent magnet are far higher than those of the magnetic conductive material). When the sandwich-type permanent magnet assemblies 1 are mounted on the rotor disc assemblies 2 one by one, the permanent magnet bodies 11 can be prevented from being directly contacted with the rotor discs.

Through the setting of permanent magnet body 11 and magnetic pole splint 12, can avoid permanent magnet body 11 direct and rotor disk contact in the rotor disk subassembly 2, and then protected permanent magnet body 11, magnetic pole splint 12 has reduced the eddy current loss of permanent magnet simultaneously, can increase and gather the magnetism effect, promotes magnetic flux density, consequently has further improved the material utilization ratio and the motor complete machine performance and the price/performance ratio of permanent magnet.

As shown in fig. 1 and 2, the rotor disc assembly 2 includes a first rotor disc 21 to which the fixing mechanism 3 is attached and a second rotor disc 22 that is fitted over the fixing mechanism 3. The permanent magnet body 11 is mounted between the first rotor disk 21 and the second rotor disk 22. The first rotor disk 21 and the second rotor disk 22 are respectively provided with a limit clamping groove 23 which is matched with the magnetic pole clamping plate 12. The pole clamping plate 12 is embedded in the limit clamping groove 23.

A plurality of fixing mechanisms 3 which are arranged in a circumferential array are fixedly connected to the first rotor disk 21. Firstly, the permanent magnet assemblies 1 are placed in limit clamping grooves 23 formed in a first rotor disc 21 one by one, at the moment, the magnetic pole clamping plates 12 in the permanent magnet assemblies 1 are embedded in the limit clamping grooves 23 formed in the first rotor disc 21, then a second rotor disc 22 is sleeved on the fixing mechanism 3, so that the second rotor disc 22 is tightly attached to the first rotor disc 21, at the moment, the other magnetic pole clamping plates 12 in the permanent magnet assemblies 1 are embedded in the limit clamping grooves 23 formed in the second rotor disc 22, and at the moment, the permanent magnet assemblies 1 can be fixedly installed between the first rotor disc 21 and the second rotor disc 22.

By the arrangement of the first rotor disk 21 and the second rotor disk 22, the permanent magnet assembly 1 can be clamped between the first rotor disk 21 and the second rotor disk 22, and at the same time, by the action of the fixing mechanism 3, the permanent magnet assembly 1 can be fixedly mounted on the rotor disk assembly 2. Through the setting of spacing draw-in groove 23, can play spacing effect to permanent magnet assembly 1, prevent that permanent magnet assembly 1 from appearing dislocation in the use.

As shown in fig. 1 and 3, the fixing mechanism 3 includes a connection rod 31 provided on the first rotor disk 21, a projection 32 for abutting against the second rotor disk 22, and a spring 33 for buffering the projection 32. The spring 33 has one end connected to the connecting rod 31 and the other end connected to the bump 32.

The connecting rod 31 is fixedly connected to the first rotor disk 21, a slideway matched with the lug 32 is arranged at the top of the connecting rod 31, and the lug 32 is slidably connected in the slideway. One side of the bump 32 is provided with a slope structure. One end of the spring 33 is fixedly connected to the slideway of the connecting rod 31, and the other end is fixedly connected to the bump 32. The second rotor plate 22 is provided with a circular perforation 221 adapted to the connecting rod 31 at a position corresponding to the connecting rod 31. When the second rotor disc 22 is sleeved on the connecting rod 31 through the circular through hole 221, the second rotor disc 22 contacts the inclined surface of the protruding block 32, and a certain acting force is generated on the protruding block 32, so that the protruding block 32 slides into the slideway, and meanwhile, the spring 33 is compressed. When the second rotor disk 22 abuts against the first rotor disk 21 beyond the projection 32, the projection 32 is reset due to the elastic force of the spring 33, and the projection 32 abuts against the second rotor disk 22 to fix the second rotor disk 22. When the second rotor disc 22 needs to be removed, only the lug 32 on the connecting rod 31 needs to be manually pressed, so that the lug 32 slides into the slideway, then a part of the second rotor disc 22 is separated from the connecting rod 31, and the second rotor disc 22 can be easily removed by repeating the above operations in sequence.

Through the arrangement of the connecting rod 31, the protruding block 32 and the spring 33, the second rotor disc 22 can be fixedly installed on the connecting rod 31, meanwhile, the second rotor disc 22 is guaranteed to be clung to the first rotor disc 21, and the permanent magnet assembly 1 is clamped between the first rotor disc 21 and the second rotor disc 22. Since the projection 32 can compress the spring 33 to slide in the slide way formed by the connecting rod 31, the second rotor disc 22 can be easily removed, and the permanent magnet assembly 1 can be conveniently detached from the rotor disc assembly 2.

While preferred embodiments of the present utility model have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the utility model.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. The magnetic steel mounting structure of the axial flux disc type motor rotor disc is characterized by comprising a permanent magnet assembly (1), a rotor disc assembly (2) for limiting the permanent magnet assembly (1) and a fixing mechanism (3) for locking the rotor disc assembly (2); the permanent magnet assembly (1) is mounted in the rotor disc assembly (2); the fixing mechanism (3) is arranged on the rotor disc assembly (2).

2. A magnetic steel mounting structure of an axial flux disc type motor rotor disc according to claim 1, characterized in that the permanent magnet assembly (1) comprises a permanent magnet body (11) and a pole clamping plate (12) which abuts in the rotor disc assembly (2); the pole clamping plates (12) are arranged on the permanent magnet body (11).

3. A magnetic steel mounting structure of an axial flux disc type motor rotor disc as claimed in claim 2, wherein said rotor disc assembly (2) comprises a first rotor disc (21) connected to said fixing mechanism (3) and a second rotor disc (22) sleeved on said fixing mechanism (3); the permanent magnet body (11) is mounted between the first rotor disc (21) and the second rotor disc (22); limiting clamping grooves (23) matched with the magnetic pole clamping plates (12) are formed in the first rotor disc (21) and the second rotor disc (22); the magnetic pole clamping plate (12) is embedded in the limit clamping groove (23).

4. A magnetic steel mounting structure of an axial flux disc type motor rotor disc as claimed in claim 3, characterized in that the fixing mechanism (3) comprises a connecting rod (31) provided on the first rotor disc (21), a projection (32) for abutting against the second rotor disc (22), and a spring (33) for buffering the projection (32); one end of the spring (33) is connected to the connecting rod (31), and the other end is connected to the bump (32).