Rotor of motor, method for maintaining rotor of motor, motor and wind-power electric generator set

Patent metadata

Field	Value
Publication number	US-12368334-B2
Application number	US-202017594334-A
Country	US
Kind code	B2
Filing date	Feb 7, 2020
Priority date	Apr 12, 2019
Publication date	Jul 22, 2025
Grant date	Jul 22, 2025

Abstract

The present disclosure relates to a rotor of a motor, a method for maintaining the rotor of the motor, the motor and a wind-power electric generator set. The rotor of the motor includes a magnetic yoke, in which the magnetic yoke is in a cylindrical-like shape, and the magnetic yoke is configured to fix a magnet on its circumference surface; and a rotor support, including a shaft connection unit and a supporting ring, in which the shaft connection unit is coaxially connectable to a rotation shaft of a motor, the supporting ring is arranged on an outer periphery of the shaft connection unit, and the magnetic yoke is connected to the supporting ring; herein, at least one of the magnetic yoke and the supporting ring of the rotor support has a structure divided into a plurality of segments in a circumference direction of itself.

First claim

What is claimed is:

1. A rotor of a motor, comprising
a magnetic yoke, wherein the magnetic yoke is in a cylindrical-like shape, and the magnetic yoke is configured to fix a magnet on its circumference surface; and
a rotor support, comprising a shaft connection unit and a supporting ring, wherein the shaft connection unit is coaxially connected to a rotation shaft of the motor, the supporting ring is arranged on an outer periphery of the shaft connection unit, and the magnetic yoke is arranged to be coaxially connected to the supporting ring;
wherein at least one of the magnetic yoke or the supporting ring of the rotor support has a structure divided into a plurality of segments in a circumference direction of itself;
the supporting ring has the structure divided into the plurality of segments in the circumference direction of itself, the supporting ring comprises a plurality of supporting plates, the plurality of the supporting plates are successively spliced into an annular sheet-like body in the circumference direction, each supporting plate is provided with a first connection portion, the shaft connection unit is provided at its outer periphery with a second connection portion, and the plurality of supporting plates are connected to the second connection portion of the shaft connection unit through the first connection portions;
the supporting plate extends in an arc-like direction, and has two opposite ends in the extending arc-like direction, the first connection portions are arranged at two ends of each the supporting plate;
two first connection portions of two adjacent supporting plates at a same splicing position are correspondingly connected to one second connection portion of the shaft connection unit; one of the two first connection portions is integral with one of the two adjacent supporting plates, and the other first connection portion is integral with the other of the two adjacent supporting plates;
each first connection portion is a convex connection portion, each second connection portion is a concave connection portion, and the concave connection portion simultaneously matches with the two first connection portions at the same splicing position in shape.

2. The rotor of the motor according to claim 1 , wherein at least one slot is formed on a surface of one of the first connection portion and the second connection portion facing to another of the first connection portion and the second connection portion, a pair of wedges opposite to each other are inserted and arranged in each slot.

3. The rotor of the motor according to claim 1 , further comprising:
an end plate, wherein the end plate is in a ring-like shape and arranged coaxially with and spaced apart from the supporting ring,
wherein the supporting ring and the end plate are respectively arranged at two ends of the magnetic yoke in an axial direction.

4. The rotor of the motor according to claim 3 , wherein the supporting ring has the structure divided into the plurality of segments in a circumference direction of itself, the supporting ring comprises a plurality of supporting plates, the plurality of the supporting plates are successively spliced into an annular sheet-like body in the circumference direction, the adjacent supporting plates are connected by a connection assembly;
and/or the magnetic yoke has the structure divided into the plurality of segments in the circumference direction of itself, the magnetic yoke comprises a plurality of magnetic yoke segments, the plurality of magnetic yoke segments are successively spliced into a cylindrical-like body in the circumference direction, the adjacent magnetic yoke segments are connected by a connection assembly;
and/or the end plate has the structure divided into the plurality of segments in the circumference direction of itself, the end plate comprises a plurality of end plate segments, the plurality of end plate segments are successively spliced into a annular sheet-like body in the circumference direction, the adjacent end plate segments are connected by a connection assembly;
the adjacent supporting plates, and/or the adjacent magnetic yoke segments, and/or the adjacent end plate segments form a first pin hole at a splicing position;
the connection assembly comprises:
a connection base plate, for connecting with the adjacent supporting plates, and/or connecting with the adjacent magnetic yoke segments, and/or connecting with the adjacent end plate segments, wherein the connection base plate is provided with a second pin hole corresponding to a position of the first pin hole; and
a pin block, connecting the second pin hole with the first pin hole, and being fixed to the connection base plate.

5. The rotor of the motor according to claim 4 , wherein at each splicing position between the adjacent supporting plates, or between the adjacent magnetic yoke segments, or between the adjacent end plate segments there is a first connection hole; the connection base plate is provided with a second connection hole corresponding to a position of the first connection hole;
the second connection hole of the connection base plate is connected and fixed to the corresponding first connection hole by a first screw bolt penetrating through a first gasket.

6. The rotor of the motor according to claim 4 , wherein the connection base plate is provided with a third connection hole around a periphery of the second pin hole; the pin block is in a stepped cylindrical-like shape and is provided with a fourth connection hole corresponding to a position of the third connection hole; the third connection hole of the pin block is connected and fixed to the fourth connection hole of the connection base plate by a second screw bolt penetrating through a second gasket.

7. The rotor of the motor according to claim 3 , wherein the supporting ring has the structure divided into plurality of segments in the circumference direction of itself, and comprises a plurality of supporting plates, the plurality of supporting plates are successively spliced into an annular sheet-like body in the circumference direction, a first splicing surface is formed between the adjacent supporting plates;
the magnetic yoke has the structure divided into the plurality of segments in the circumference direction of itself, the magnetic yoke comprises a plurality of magnetic yoke segments, the plurality of magnetic yoke segments are successively spliced into a cylindrical-like body in the circumference direction, a second splicing surface is formed between the adjacent magnetic yoke segments;
the end plate has the structure divided into the plurality of segments in the circumference direction of itself, the end plate comprises a plurality of end plate segments, the plurality of end plate segments are successively spliced into a annular sheet-like body in the circumference direction, a third splicing surface is formed between the adjacent end plate segments;
wherein at least two of the first splicing surface, the second splicing surface and the third splicing surface are arranged to be staggered to each other;
wherein the rotor of the motor further comprises a sealant covering at least one of the first splicing surface, the second splicing surface or the third splicing surface.

8. The rotor of the motor according to claim 1 , wherein the supporting ring has the structure divided into a plurality of segments in the circumference direction of itself, and comprises a plurality of supporting plates, the plurality of supporting plates are successively spliced into an annular sheet-like body in the circumference direction; the magnetic yoke has the structure divided into the plurality of segments in the circumference direction of itself, the magnetic yoke comprises a plurality of magneti

Assignees

• Xinjiang Goldwind Science & Tech Co Ltd

Inventors

• Liu Likun
• Li Yanhui

Classifications

• H02K2213/12

  Machines characterised by the modularity of some components · CPC title

• H02K7/14

  Structural association with mechanical loads, e.g. with hand-held machine tools or fans (with fan or impeller for cooling the machine H02K9/06) · CPC title

• H02K15/50

  Disassembling, repairing or modifying dynamo-electric machines (repairing of cooling fluid boxes H02K15/38) · CPC title

• Y02E10/72

  Wind turbines with rotation axis in wind direction · CPC title

• H02K7/1838

  Generators mounted in a nacelle or similar structure of a horizontal axis wind turbine · CPC title