CN210957947U

CN210957947U - Iron core structure for permanent magnet synchronous motor rotor

Info

Publication number: CN210957947U
Application number: CN201921406371.4U
Authority: CN
Inventors: 李向南; 李有生; 赵瑜; 雷云龙; 侯佳峰; 陈栋; 刘庚; 窦泽华
Original assignee: Shanxi North Machinery Holdings Co ltd
Current assignee: Shanxi North Machinery Holdings Co ltd
Priority date: 2019-08-28
Filing date: 2019-08-28
Publication date: 2020-07-07
Anticipated expiration: 2029-08-28

Abstract

The utility model relates to an iron core structure for a permanent magnet synchronous motor rotor, belonging to the technical field of permanent magnet motors; the iron core structure comprises a rotating shaft (1) used for transmitting torque, an iron core (3) used for fixing and installing magnetic steel, and a welding rib (2) used for supporting the iron core, wherein the welding rib is fixedly connected to the rotating shaft, and the iron core is fixedly connected to the welding rib. The iron core is a thick-walled tube. The welding rib is an annular plate, an inner hole is matched with the outer circle of the rotating shaft and used for being sleeved and fixed on the outer circle of the rotating shaft, and the outer circle of the welding rib is matched with the inner circle of the iron core. The core structure further comprises support ribs (4) for reinforcement from both sides of the core. The rotating shaft, the welding ribs, the iron core and the supporting ribs are fixedly connected through welding. Contrast prior art, the utility model discloses when combining pivot, iron core as an organic whole structure, not only guaranteed the intensity of structure, reduced the quality of rotor, it is long, reduced the processing cost when effectively having shortened rotor manufacturing in addition.

Description

Iron core structure for permanent magnet synchronous motor rotor

Technical Field

The utility model belongs to the technical field of permanent-magnet machine, a iron core structure is related to, in particular to an iron core structure that is used for permanent magnet synchronous motor table to paste solid rotor of formula.

Background

The existing permanent magnet synchronous motor solid rotor mostly adopts a rotating shaft-key-iron core structure, the iron core is an iron block with a hole at the center, so that the rotor has large mass, and lightening holes are usually needed to be arranged on the iron core for reducing the mass, thereby bringing the problems of long machining time and increased manufacturing cost, and being not beneficial to saving and utilizing materials.

Disclosure of Invention

The utility model aims at overcoming prior art's limitation, solving the problem that original permanent magnet motor solid rotor is unshakable in one's determination manufacturing cost is high, providing a welding unshakable in one's determination that is used for permanent magnet synchronous motor table to paste formula solid rotor.

The purpose of the invention is realized by the following technical scheme.

An iron core structure for a permanent magnet synchronous motor rotor comprises a rotating shaft for transmitting torque, a welding rib and an iron core for fixing and mounting magnetic steel;

the welding rib is used for supporting the iron core;

the welding rib is fixedly connected to the rotating shaft, and the iron core is fixedly connected to the welding rib.

Preferably, the core is a thick-walled tube.

Preferably, the welding rib is an annular plate, an inner hole is matched with the outer circle of the rotating shaft and used for being sleeved and fixed on the outer circle of the rotating shaft, and the outer circle of the welding rib is matched with the inner circle of the iron core.

Preferably, the fixed connection is fixed connection by welding.

Preferably, the core structure further includes support ribs for reinforcing from both sides of the core.

Preferably, the rotating shaft, the welding rib, the iron core and the support rib are made of metal with welding performance and meeting the steel strength requirement.

Preferably, the core is made of a magnetically permeable material.

Preferably, the rotating shaft is 35# steel.

Preferably, the welding rib is Q345 steel.

Preferably, the iron core is Q235 steel.

Preferably, the support rib is made of Q345 steel.

Advantageous effects

Compared with the prior art, the utility model provides a structure unshakable in one's determination for permanent magnet synchronous motor table pastes formula solid rotor combines pivot, iron core when as an organic whole structure, has reduced the quality of rotor, simultaneously, through the design of brace rod, has increased bulk strength, simultaneously, through overall structure's change, when effectively having shortened rotor manufacturing, has reduced the working costs.

Drawings

Fig. 1 is a schematic structural diagram of an iron core for a surface-mounted solid rotor of a permanent magnet synchronous motor according to an embodiment of the present invention; (a) a front view, (b) a side view;

FIG. 2 is a schematic view of a weld rib structure; (a) a front view, (b) a side view;

FIG. 3 is a schematic view of a core configuration; (a) a front view, (b) a side view;

FIG. 4 is a schematic view of a support rib structure; (a) a front view, (b) a side view;

fig. 5 is a schematic structural diagram of a surface-mounted solid rotor of a permanent magnet synchronous motor.

Reference numerals: 1-rotating shaft, 2-welding rib, 3-iron core, 4-supporting rib, 5-iron core structure and 6-magnetic steel.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings and examples.

As shown in fig. 1, an iron core structure for a rotor of a permanent magnet synchronous motor comprises a rotating shaft 1 for transmitting torque, a welding rib 2, an iron core 3 for fixing and mounting magnetic steel 6;

as shown in fig. 2, the welding rib 2 is an annular plate, an inner hole of the annular plate is matched with the outer circle of the rotating shaft 1 and is used for being sleeved and fixed on the outer circle of the rotating shaft 1, and the outer circle of the welding rib 2 is matched with the inner circle of the iron core 3 and is used for supporting the iron core 3;

the welding rib is fixed and arranged on the rotating shaft, and the iron core is fixed and arranged on the welding rib.

Preferably, as shown in fig. 3, the iron core is a thick-walled tube, which greatly reduces the mass, shortens the processing time, saves materials, and reduces the cost compared with the conventional iron block structure.

Preferably, the retention is by welding. Of course, the method is not limited to welding, and other fixing connection methods such as bonding, screw connection and the like can also be adopted.

Preferably, in order to further enhance the steel strength of the core structure, the core structure further includes support ribs 4, and the support ribs 4 are used for reinforcing the core 3 from both sides. As shown in fig. 4, the support rib 4 is a triangular plate, and is disposed on two sides of the welding rib 2, and welded to the welding rib 2 and the iron core 3, so as to increase the structural strength.

Preferably, the core is made of a magnetically permeable material.

Preferably, the rotating shaft is 35# steel.

Preferably, the welding rib is Q345 steel.

Preferably, the iron core is Q235 steel.

Preferably, the support rib is made of Q345 steel.

As shown in fig. 5, after the above structures are connected to form an integrated iron core structure 5, and after the magnetic steel 6 is disposed on the outer surface of the iron core 3, a surface-mounted solid rotor of the permanent magnet motor can be formed.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, it will be apparent to those skilled in the art that various changes and modifications may be made without departing from the principles of the invention, and these changes and modifications should be construed as being included in the scope of the invention.

Claims

1. A core structure for a rotor of a permanent magnet synchronous motor, comprising a rotating shaft (1) for transmitting torque and a core (3) for fixing and mounting magnetic steel, characterized in that: still including being used for supporting welding muscle (2) unshakable in one's determination, weld muscle fixed connection in pivot, unshakable in one's determination fixed connection welds the muscle.

2. A core structure as recited in claim 1, wherein: the iron core is a thick-walled tube.

3. A core structure as recited in claim 1, wherein: the welding rib is an annular plate, an inner hole is matched with the outer circle of the rotating shaft and used for being sleeved and fixed on the outer circle of the rotating shaft, and the outer circle of the welding rib is matched with the inner circle of the iron core.

4. A core structure according to any one of claims 1-3, characterized in that: the fixed connection is fixed connection through a welding mode.

5. A core structure according to claim 4, characterized in that: the core structure further comprises support ribs (4) for reinforcement from both sides of the core.

6. A core structure according to claim 5, characterized in that: the rotating shaft, the welding ribs, the iron core and the supporting ribs are made of metal with welding performance and capable of meeting the steel strength requirement.

7. A core structure as recited in claim 6, wherein: the rotating shaft is 35# steel.

8. A core structure as recited in claim 6, wherein: the welding ribs are made of Q345 steel.

9. A core structure as recited in claim 6, wherein: the iron core is made of Q235 steel.

10. A core structure as recited in claim 6, wherein: the support rib is made of Q345 steel.