CN110336394B

CN110336394B - Rotor, motor and wind generating set

Info

Publication number: CN110336394B
Application number: CN201910555449.7A
Authority: CN
Inventors: 步琼; 庄建新
Original assignee: Beijing Goldwind Science and Creation Windpower Equipment Co Ltd
Current assignee: Beijing Goldwind Science and Creation Windpower Equipment Co Ltd
Priority date: 2019-06-25
Filing date: 2019-06-25
Publication date: 2022-11-11
Anticipated expiration: 2039-06-25
Also published as: CN110336394A

Abstract

The embodiment of the application provides a rotor, a motor and a wind generating set, wherein the rotor comprises a magnetic yoke, an end cover, a plurality of magnetic pole modules, a pressing bar and a hole cover; one end of the two axial ends of the magnetic yoke is provided with a flange, and the other end of the two axial ends of the magnetic yoke is connected with the end cover; the pressing strips are arranged on the magnet mounting surface of the magnet yoke at intervals along the circumferential direction, and a magnetic pole module is arranged between every two adjacent pressing strips; a plurality of magnet through holes for the magnetic pole modules to pass through are formed in at least one of the flange and the end cover along the circumferential direction; one part of each hole cover extends into the corresponding magnet through hole and is abutted with the magnetic pole module opposite to the magnet through hole, and the other part of each hole cover is connected with the flange or the end cover. The rotor provided by the embodiment of the application is applied to the motor, the magnet yoke, the end cover, the pressing bar, the stator and the shafting assembly can be assembled firstly in the assembling process of the motor, and then the magnetic pole module is installed, so that the structure of the rotor and the structure of the stator can be prevented from being damaged, the operation difficulty of motor sleeving is reduced, and the working efficiency is improved.

Description

Rotor, motor and wind generating set

Technical Field

The application relates to the technical field of motors, in particular to a rotor, a motor and a wind generating set.

Background

The motor comprises a rotor and a stator, wherein the rotor and the stator are coaxially arranged, and the rotor is sleeved on the periphery of the stator. The rotor includes the yoke to and along a plurality of circumference intervals set up the magnet on the yoke (can be made by neodymium iron boron permanent magnet material that has better magnetic property). Because the magnet has magnetism, and has metal component (like iron core) on the rotor, when carrying out the motor suit, the magnet of rotor and stator can attract each other for local collision and absorption appear between rotor and the stator, lead to rotor and stator to damage, also greatly increased the operation degree of difficulty of motor suit work simultaneously.

In summary, the prior art has the defects that the rotor and the stator are easy to damage when being sleeved and the sleeving operation difficulty is increased due to the mutual attraction between the magnet of the rotor and the stator.

Disclosure of Invention

The application aims to provide a rotor, a motor, a wind generating set and a sleeving method of the motor, which are used for solving the technical problems that in the prior art, the rotor and the stator are easy to damage or the sleeving operation difficulty is increased due to the mutual attraction of the magnet of the rotor and the stator.

In a first aspect, an embodiment of the present application provides a rotor, including a magnetic yoke, an end cover, and a plurality of magnetic pole modules, a pressing bar, and a hole cover; one end of the two axial ends of the magnetic yoke is provided with a flange, and the other end of the two axial ends of the magnetic yoke is connected with the end cover; a plurality of pressing strips are arranged on the magnet mounting surface of the magnetic yoke at intervals along the circumferential direction, and a magnetic pole module is arranged between every two adjacent pressing strips; a plurality of magnet through holes for the magnetic pole modules to pass through are arranged in at least one of the flange and the end cover along the circumferential direction; one part of each hole cover extends into the corresponding magnet through hole and is abutted with the magnetic pole module opposite to the magnet through hole, and the other part of each hole cover is connected with the flange or the end cover.

In a second aspect, embodiments of the present application provide an electric machine, which is a generator or an electric motor, and which includes a rotor as provided in the first aspect of the embodiments of the present application.

In a third aspect, an embodiment of the present application provides a wind turbine generator system, including the generator provided in the second aspect of the embodiment of the present application.

Compared with the prior art, the invention has the following advantages:

the rotor provided by the embodiment of the application is applied to a motor, in the assembly process of the motor, the magnetic yoke, the end cover and the pressing bar can be assembled into the magnetic yoke assembly, and then the magnetic yoke assembly, the stator and the shafting assembly are sleeved to enable the parts to be relatively fixed; and then, the magnetic pole module is pushed between two adjacent pressing strips on the magnet mounting surface of the magnetic yoke through the corresponding magnet through hole in the flange or the end cover, so that the magnetic pole module is fixed on the magnet mounting surface of the magnetic yoke by the pressing strips, then, one part of the hole cover is inserted into the corresponding magnet through hole and is abutted against the magnetic pole module right opposite to the magnet through hole, the other part of the hole cover is connected with the flange or the end cover, and the magnetic pole module is limited to slide out through the magnetic pole through hole.

In the rotor provided by the embodiment of the application, the adjacent two pressing strips can firmly fix the magnetic pole module arranged between the two pressing strips on the magnet mounting surface of the magnetic yoke, so that feasible conditions are created for the assembly step of mounting the magnetic pole module after assembling the magnetic yoke assembly. Because the magnetic yoke assembly, the stator and the shafting assembly are sleeved before the magnetic pole module is installed, the three components are relatively fixed, the magnetic yoke cannot move due to the adsorption force between the magnetic pole module and the stator, and the magnetic yoke is prevented from being impacted or adsorbed with the stator; and, the one end of yoke is connected with the end cover this moment, and the end cover can increase the structural strength of yoke, has avoided the yoke effectively because of the deformation that powerful appeal leads to between magnet and the stator. The rotor provided by the embodiment of the application can be used for ensuring that the structures of the rotor and the stator are not damaged, reducing the workload of part repairing work, remarkably reducing the operation difficulty of motor sleeving, improving the working efficiency and ensuring the personal safety of workers.

In addition, for the split type motor, before the magnetic pole module is installed, the end cover is connected with the magnetic yoke, when the magnetic pole module is installed, the end cover can assist the magnetic yoke to resist the adsorption force of the magnetic pole module, the deformation of the magnetic yoke is avoided, the problem that the magnetic yoke is easy to deform when the split type motor is assembled is effectively solved, the design defect of the split type motor is made up, the design of the split type motor is facilitated to be widely applied to a large motor, and meanwhile, the transportation problem of the large motor is also solved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments of the present application will be briefly described below.

FIG. 1 is a schematic structural diagram of a rotor provided in an embodiment of the present application;

fig. 2 is a plan view of a yoke provided in an embodiment of the present application;

FIG. 3 is an isometric view of an end cap provided by an embodiment of the present application;

FIG. 4 is a schematic diagram of a structure of an orifice cover provided in an embodiment of the present application;

fig. 5 is a schematic structural diagram of a magnetic pole module provided in an embodiment of the present application;

fig. 6 is an assembly schematic diagram of a magnetic pole module, a bead, a hole cover and a first stopper provided in an embodiment of the present application;

FIG. 7 is a front view of FIG. 6 provided by an embodiment of the present application;

FIG. 8 is a schematic view of a bead structure provided in an embodiment of the present application;

FIG. 9 is a schematic structural diagram of a first stopper provided in an embodiment of the present application;

FIG. 10 is a cross-sectional view taken along line C of FIG. 7 according to an exemplary embodiment of the present disclosure;

FIG. 11 is an enlarged view of a portion of FIG. 10 at K, according to an exemplary embodiment of the present disclosure;

FIG. 12 is a cross-sectional view taken along line D of FIG. 7 according to an exemplary embodiment of the present disclosure;

fig. 13 is an assembly schematic diagram of a pole module, another molding and a hole cover provided in an embodiment of the present application;

FIG. 14 is a front view of FIG. 13 as provided by an embodiment of the present application;

FIG. 15 is a schematic view of another molding strip according to an embodiment of the present disclosure;

FIG. 16 is a cross-sectional view taken along line E of FIG. 14 as provided by an embodiment of the present application;

FIG. 17 is a cross-sectional view taken along line F of FIG. 14 as provided by an embodiment of the present application;

fig. 18 is an assembly view of a magnetic pole module, a further compression bar, an aperture cover and a second stop block provided in an embodiment of the present application;

FIG. 19 is a front view of FIG. 18 as provided by an embodiment of the present application;

FIG. 20 is a schematic view of a structure of another molding strip provided in the embodiments of the present application;

FIG. 21 is a schematic structural view of a second limiting block provided in the embodiments of the present application;

FIG. 22 is a front view of FIG. 21 provided by an embodiment of the present application;

FIG. 23 is a sectional view taken along line G of FIG. 19 according to an exemplary embodiment of the present disclosure;

FIG. 24 is a cross-sectional view taken along line H of FIG. 19 according to an exemplary embodiment of the present disclosure;

in the figure:

1-a magnetic yoke; 11-a flange; 101-a magnet via;

2-end cap;

3-a magnetic pole module; 31-a substrate; 311-a first probe; 312-a second probe;

32-a magnet; 33-a rib plate; 331-connection hole;

301-first pole side; 302-first pole bottom face;

4-layering; 41-a boss; 401 — first bead side; 402-a first bead bottom surface;

5-hole covers; 51-a cover plate; 52-boss; 521-a first plate; 522-a second plate;

6-a first limiting block; 61-a top plate; 62-a first block; 63-a second block;

601-a first limit side; 602-a first stop floor;

7-a second limiting block; 701-a second limit side; 702-a second limiting bottom surface.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.

It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

The inventors of the present application have found that in the prior art, for a non-split motor, the magnets are generally mounted on the yoke and assembled into a complete (or relatively complete) rotor, and then the assembled rotor and stator are assembled into a complete motor. Because the complete rotor comprises the magnet, when the motor is sleeved, the magnet and the stator of the rotor can attract each other to cause local collision between the rotor and the stator, the rotor and the stator are deformed due to impact force, and meanwhile, coatings (such as an anticorrosive coating or a protective coating) on the surfaces of the rotor and the stator can be damaged, and even casualties of workers can be caused in severe cases. In addition, once the magnet of the rotor and the stator are adsorbed together, the magnet is difficult to separate, and the magnet is damaged, so that the subsequent sleeving work is difficult to continue, and the operation difficulty of the sleeving work is increased. In addition, the damaged rotor and stator need be repaired, which further increases the workload and causes the waste of manpower and material resources.

For the split type motor, when the split type motor is sleeved, a plurality of modules (such as a magnet yoke module and a stator module) are assembled into a finished magnet yoke and a finished stator, and then the sleeving work among the magnet yoke, the stator and a shafting assembly is finished. It is then necessary to mount a plurality of magnets on the yoke before mounting the end caps. Because not connect the end cover on the yoke this moment, the structural strength of yoke is more weak, and powerful appeal can lead to the yoke to warp between magnet and the stator, leads to partial magnet and stator absorption together, and yoke and magnet all receive destruction and be difficult to recover, have increased the operation degree of difficulty of suit work and have reduced work efficiency.

Based on the above findings, the inventor of the present application considers that if the structure of the existing motor can be changed so that the motor can satisfy the requirement that the magnet is mounted on the yoke after the rotor, the stator, the shafting assembly and the end cover are sleeved, the collision of the rotor and the stator and the deformation of the yoke caused by the attraction force between the magnet and the stator can be avoided.

The embodiment of the present application provides a rotor, as shown in fig. 1 to 3, including a yoke 1, an end cap 2, and a plurality of magnetic pole modules 3, a bead 4, and a hole cover 5. Of the two axial ends of the yoke 1, one end is provided with a flange 11, and the other end is connected to the end cap 2. A plurality of pressing strips 4 are arranged on the magnet mounting surface of the magnetic yoke 1 at intervals along the circumferential direction, and a magnetic pole module 3 is arranged between every two adjacent pressing strips 4. In at least one of flange 11 and end cap 2, a plurality of magnet through holes 101 through which magnetic pole modules 3 can pass are provided in the circumferential direction. One part of each hole cover 5 protrudes into the corresponding magnet through hole 101 and abuts against the magnetic pole module 3 facing the magnet through hole 101, and the other part is connected with the flange 11 or the end cover 2.

As will be understood by those skilled in the art, for a rotor applied to an outer rotor motor, the magnet-mounting surface is an inner peripheral surface of the yoke 1, on which the bead 4 is provided; for a rotor applied to an inner rotor motor, the magnet mounting surface is the outer peripheral surface of the yoke 1, and the bead 4 is provided on the outer peripheral surface.

Alternatively, in the rotor provided in the embodiment of the present application, as shown in fig. 1 and 3, for the rotor for application to an external rotor motor, the end cover 2 is an annular plate, and the outer diameter of the end cover 2 matches the outer diameter of the yoke 1. Of course, it will be understood by those skilled in the art that the configuration and dimensions of the end cap 2 may be adapted if the rotor is to be used in an internal rotor motor.

Alternatively, in the embodiment of the present application, the yoke 1 and the end cap 2 may be connected in various ways, for example, the yoke 1 and the end cap 2 are welded, detachably connected, or integrally formed.

In the embodiment of the present application, a plurality of magnet through holes 101 may be provided only in the flange 11 of the yoke 1 in the circumferential direction, a plurality of magnet through holes 101 may be provided only in the end cap 2 in the circumferential direction, or a plurality of magnet through holes 101 may be provided in both the flange 11 and the end cap 2 in the circumferential direction. In fig. 1 to 3, a plurality of magnet through holes 101 are provided in both the flange 11 and the end cap 2 in the circumferential direction.

In the rotor provided in the embodiment of the present application, the magnet through hole 101 through which the magnetic pole module 3 can pass, that is, the magnetic pole module 3 can be placed between two adjacent pressing strips 4 on the magnet installation surface of the magnetic yoke 1 through the magnet through hole 101, and the magnetic pole module 3 fixed between two adjacent pressing strips 4 can also be taken out through the magnet through hole 101.

The rotor provided by the embodiment of the application is applied to a motor, in the assembly process of the motor, the magnet yoke 1, the end cover 2 and the pressing bar 4 can be assembled into a magnet yoke assembly, and then the magnet yoke assembly, the stator and the shafting assembly are sleeved to enable the parts to be relatively fixed; then, the magnetic pole module 3 is pushed between two adjacent pressing strips 4 on the magnet mounting surface of the magnetic yoke 1 through the corresponding magnet through hole 101 in the flange 11 or the end cover 2, so that the magnetic pole module 3 is fixed on the magnet mounting surface of the magnetic yoke 1 by the pressing strips 4, then, one part of the hole cover 5 is inserted into the corresponding magnet through hole 101 and is abutted against the magnetic pole module 3 opposite to the magnet through hole 101, the other part of the hole cover 5 is connected with the flange 11 or the end cover 2, and the magnetic pole module 3 is limited to slide out through the magnet through hole 101.

In the rotor provided by the embodiment of the application, the two adjacent pressing strips 4 can firmly fix the magnetic pole module 3 arranged between the two magnetic pole modules on the magnet mounting surface of the magnetic yoke 1, so that feasible conditions are created for the assembly step of firstly assembling the magnetic yoke assembly and then mounting the magnetic pole module 3. Because the magnetic yoke assembly, the stator and the shafting assembly are sleeved before the magnetic pole module 3 is installed, the three components are relatively fixed, the magnetic yoke 1 cannot be moved due to the adsorption force between the magnetic pole module 3 and the stator, and the magnetic yoke 1 is prevented from being impacted or adsorbed with the stator; and, one end of yoke 1 is connected with end cover 2 at this moment, and end cover 2 can increase the structural strength of yoke 1, has avoided yoke 1 to lead to the deformation because of the powerful appeal between magnet 32 and the stator effectively. The rotor provided by the embodiment of the application can be used for ensuring that the structures of the rotor and the stator are not damaged, reducing the workload of part repairing work, remarkably reducing the operation difficulty of motor sleeving, improving the working efficiency and ensuring the personal safety of workers.

In addition, for the split motor, before the magnetic pole module 3 is installed, the end cover 2 is connected with the magnetic yoke 1, when the magnetic pole module 3 is installed, the end cover 2 can assist the magnetic yoke 1 to resist the adsorption force of the magnetic pole module 3, the magnetic yoke 1 is prevented from deforming, the problem that the magnetic yoke 1 is easy to deform during the split motor assembling is effectively solved, the design defect of the split motor is overcome, the split motor is beneficial to being widely applied to the large motor in design, and meanwhile, the transportation problem of the large motor is also solved.

Alternatively, in the rotor provided in the embodiment of the present application, as shown in fig. 8, 15, and 20, the bead 4 includes two first bead side surfaces 401. In two adjacent beads 4, one first bead side 401 of one bead 4 is opposed to one first bead side 401 of the other bead 4 in the circumferential direction of the yoke 1. As shown in fig. 5, the magnetic pole module 3 includes two first magnetic pole side surfaces 301, and the two first magnetic pole side surfaces 301 are respectively attached to one first pressing strip side surface 401 of each pressing strip 4 of two adjacent pressing strips 4.

As shown in fig. 8, the bead 4 may have a long strip shape, the first bead side 401 is a side of the bead 4 in the length direction, the two first bead sides 401 are opposite to each other in the width direction of the bead 4, and the length direction of the bead 4 is substantially parallel to the axial direction of the yoke 1. As shown in fig. 5, the magnetic pole module 3 is substantially in the shape of a strip, the first magnetic pole side surfaces 301 are longitudinal side surfaces of the magnetic pole module 3, the two first magnetic pole side surfaces 301 are opposite to each other in the width direction of the magnetic pole module 3, and the longitudinal direction of the magnetic pole module 3 is substantially parallel to the axial direction of the magnetic yoke 1. Taking the left magnetic pole module 3 in fig. 6 and 7 as an example, as shown in fig. 10 to 12, one first magnetic pole side surface 301 of the magnetic pole module 3 is attached to the right first compression bead side surface 401 of the left compression bead 4, and the other first magnetic pole side surface 301 of the magnetic pole module 3 is attached to the left first compression bead side surface 401 of the right compression bead 4.

Optionally, as shown in fig. 10 to 12, in the rotor provided in the embodiment of the present application, the pressing bar 4 further includes a first pressing bar bottom surface 402, and two first pressing bar side surfaces 401 are respectively located on two sides of the first pressing bar bottom surface 402. The bottom surface 402 of the first pressing strip is opposite to and attached to the magnet mounting surface, and a first preset angle is formed between the side surface 401 of the first pressing strip and the bottom surface 402 of the first pressing strip and is an obtuse angle. The magnetic pole module 3 further comprises a first magnetic pole bottom surface 302, and two first magnetic pole side surfaces 301 are respectively located at two sides of the first magnetic pole bottom surface 302. The first magnetic pole bottom surface 302 faces and is attached to the magnet installation surface, a second preset angle is formed between the first magnetic pole side surface 301 and the first magnetic pole bottom surface 302, and the first preset angle and the second preset angle are complementary angles. The two first magnetic pole side surfaces 301 of the magnetic pole module 3 are respectively attached to one first pressing strip side surface 401 of each pressing strip 4 of the two adjacent pressing strips 4.

The bottom surface 402 of the first bead is parallel to the longitudinal direction of the bead 4, and the two side surfaces 401 of the first bead are respectively disposed at the left and right sides of the bottom surface 402 of the first bead and adjacent to the bottom surface 402 of the first bead. The first magnetic pole bottom surface 302 is a bottom surface of the magnetic pole module parallel to the length direction thereof, and the two first magnetic pole side surfaces 301 are respectively adjacent to the first magnetic pole bottom surface 302 at the left and right sides of the first magnetic pole bottom surface 302. Because the first preset angle is an obtuse angle and the first preset angle and the second preset angle are complementary angles, when the first magnetic pole side surface 301 is attached to the first pressing strip side surface 401, the pressing strip 4 can limit the movement of the magnetic pole module 3 in the radial direction and the circumferential direction of the magnetic yoke 1 at the same time, so that the magnetic pole module 3 is fixed on the magnet installation surface.

Alternatively, in the rotor provided in the embodiment of the present application, as shown in fig. 5, the magnetic pole module 3 includes a base plate 31 and a magnet 32 disposed on the base plate 31, and both ends of the base plate 31 respectively exceed the magnet 32 in the length direction of the magnet 32, so as to form a first protruding portion 311 and a second protruding portion 312. The first pole bottom face 302 of the pole module 3 is the bottom face of the substrate 31 remote from the magnet 32, and the first pole side face 301 of the pole module 3 includes the side face of the magnet 32 and the side face of the substrate 31.

The side of magnet 32 and the side of base plate 31 are coplanar and are part of first pole side 301 of first pole module 3. The magnet 32 includes a plurality of magnetic steels (not shown) arranged in a row along the length direction of the substrate 31, and the plurality of magnetic steels are wrapped together by a housing (not shown), which has sealing and corrosion-resistant functions, and the internal gap of the housing can be filled with a colloid.

Alternatively, the magnetic steels may be arranged in two rows along the length direction of the substrate 31, and the polarity of one row of magnetic steels is opposite to that of the other row of magnetic steels.

Optionally, in the rotor provided in the embodiment of the present application, the relationship between the arrangement position of the magnet via 101 and the placement orientation of the magnetic pole module 3 may include the following 3 types:

mode 1: only the flange 11 is provided with a plurality of magnet through holes 101 in the circumferential direction, the first protruding portions 311 of all the magnetic pole modules 3 are directed toward the flange 11 in the axial direction of the yoke 1, and the second protruding portions 312 of all the magnetic pole modules 3 are directed toward the end cover 2 in the axial direction of the yoke 1.

Mode 2: only the end cover 2 is provided with a plurality of magnet through holes 101 in the circumferential direction, the first protruding portions 311 of all the magnetic pole modules 3 are directed toward the end cover 2 in the axial direction of the yoke 1, and the second protruding portions 312 of all the magnetic pole modules 3 are directed toward the flange 11 in the axial direction of the yoke 1.

Mode 3: a plurality of magnet through holes 101 are circumferentially arranged in both the flange 11 and the end cover 2, the first protruding part 311 of a part of the magnetic pole modules 3 is close to the flange 11, and the second protruding part 312 of the part of the magnetic pole modules 3 is close to the end cover 2; the first projection 311 of the other part of the pole module 3 is close to the end cap 2, and the second projection 312 of the other part of the pole module 3 is close to the flange 11.

In the rotor provided in the embodiment of the present application, as shown in fig. 1 to 3, the relationship between the arrangement position of the magnet via hole 101 and the installation orientation of the magnetic pole module 3 is the manner 3. Specifically, the magnet through holes 101 on the flange 11 and the magnet through holes 101 on the end cover 2 are arranged in a staggered manner in the circumferential direction of the yoke 1, and assuming that there exists a reference plane which is perpendicular to the axial direction of the yoke 1 and on which the magnet through holes 101 on the flange 11 and the magnet through holes 101 on the end cover 2 are both projected, there is a projection of one magnet through hole 101 on the end cover 2 between the projections of any two adjacent magnet through holes 101 on the flange 11.

For two adjacent magnetic pole modules 3, one magnetic pole module 3 is placed between two adjacent press strips 4 through the magnet through hole 101 on the flange 11, the first protruding part 311 of the magnetic pole module 3 is close to the flange 11, and the second protruding part 312 of the magnetic pole module 3 is close to the end cover 2; another magnetic pole module 3 is placed between two adjacent press strips 4 through the magnet through hole 101 on the end cover 2, the first protruding part 311 of the magnetic pole module 3 is close to the end cover 2, and the second protruding part 312 of the magnetic pole module 3 is close to the flange 11.

Optionally, as shown in fig. 6 and 7, the rotor provided in the embodiment of the present application further includes a plurality of first limiting blocks 6, where the plurality of first limiting blocks 6 correspond to the plurality of magnetic pole modules 3 one to one. The hole cover 5 and the first limiting block 6 corresponding to the same magnetic pole module 3 are respectively close to two ends of the magnetic pole module 3 in the length direction. The first stopper 6 is connected to the magnet attachment surface, abuts against the magnet 32 of the corresponding magnetic pole module 3 in the axial direction of the yoke 1, and covers the second protruding portion 312 of the magnetic pole module 3 in the radial direction of the yoke 1.

In fig. 6 and 7, each magnetic pole module 3 has a hole cover 5 and a first stopper 6 corresponding thereto, the hole cover 5 is close to the first protruding portion 311 of the base plate 31, and the first stopper 6 is close to the second protruding portion 312 of the base plate 31. The hole cover 5 and the first limiting block 6 are respectively abutted against two ends of the magnetic pole module 3, and the magnetic pole module 3 is limited to move in the axial direction of the magnetic yoke 1.

Alternatively, the first stopper 6 may be attached to the magnet attachment surface of the yoke 1 by screws, and the first stopper 6 may also be welded directly to the magnet attachment surface of the yoke 1.

Alternatively, in the rotor provided in the embodiment of the present application, as shown in fig. 9, the first stopper 6 includes a top plate 61, a first block 62, and a second block 63. The first block 62 and the second block 63 are fixed to the same side of the top plate 61 and are adjacent in the axial direction of the yoke 1, and the first block 62 has a thickness larger than that of the second block 63.

The first block 62 and the second block 63 are arranged between the opposite first bead side surfaces 401 of two adjacent beads 4. The first block 62 abuts and is attached to the magnet mounting surface. The second block 63 abuts against the corresponding magnet 32 of the magnetic pole module 3 in the axial direction of the yoke 1, and covers the second protruding portion 312 of the magnetic pole module 3 in the radial direction of the yoke 1. The top plate 61 extends beyond the first block 62 at both ends of the yoke 1 in the circumferential direction, and the top plate 61 covers a part of the bead 4 in the radial direction of the yoke 1 at a portion extending beyond the first block 62.

Since the thickness of the first block 62 is greater than that of the second block 63, during the assembly process, when the first block 62 is attached to the magnet mounting surface, there is a gap between the second block 63 and the magnet mounting surface, and the second protruding portion 312 of the magnetic pole module 3 can be inserted into the gap along the axial direction of the magnetic yoke 1 until the magnet 32 of the magnetic pole module 3 abuts against the second block 63 along the axial direction of the magnetic yoke 1. Meanwhile, the second block 63 can cover the second protruding portion 312 of the magnetic pole module 3 in the radial direction of the yoke 1, and further cooperate with the bead 4 to fix the magnetic pole module 3 to the magnet mounting surface.

Alternatively, the first block 62 and the second block 63 may be regarded as a whole, and the bottom surface of the second block 63 facing the second protruding portion 312 may be regarded as a first limiting bottom surface 602 of the whole, and the first limiting bottom surface 602 may be analogous to the first magnetic pole bottom surface 302 of the magnetic pole module 3; regarding the side surfaces of the whole located at both sides of the first limit bottom surface 602 as the two first limit side surfaces 601 of the whole, the first limit side surfaces 601 can be analogized to the first magnetic pole side surfaces 301 of the magnetic pole module 3. A second preset angle is formed between the first limiting side 601 and the first limiting bottom surface 602. The first limiting bottom surface 602 faces and is attached to the magnet mounting surface, and the two first magnetic pole side surfaces 301 are respectively attached to one first pressing strip side surface 401 of each pressing strip 4 in the two adjacent pressing strips 4.

Optionally, the first stopper 6 may be provided with a threaded through hole, and the threaded through hole penetrates through the top plate 61 and the first block 62. The threaded through hole can be penetrated by a screw, so that the first limiting block 6 can be fixed on the magnet mounting surface of the magnetic yoke 1 through the screw.

Optionally, the second block 63 is provided with a flexible gasket (not shown) opposite to the magnet 32, which is used to abut against the rib 33. Because be provided with flexible gasket in the boss 52, be the flexible contact between boss 52 and the floor 33, flexible gasket can play certain cushioning effect, prevents that boss 52 and floor 33 from taking place the rigidity and colliding with. Alternatively, the flexible gasket may be made of rubber, teflon or nylon.

Alternatively, in the rotor provided in the embodiment of the present application, as shown in fig. 15, a convex portion 41 is provided on each first bead side 401 of the beads 4. In adjacent two of the pressing strips 4, one protruding portion 41 in one pressing strip 4 and one protruding portion 41 in the other pressing strip 4 are opposed to each other in the circumferential direction of the yoke 1 and are close to each other. The second protruding portion 312 of the base plate 31 is provided between the two mutually adjacent protruding portions 41, and the magnet 32 of the magnetic pole module 3 abuts against the two mutually adjacent protruding portions 41 in the axial direction of the yoke 1.

Taking fig. 15 as an example, two protrusions 41 are disposed on the bead 4, the two protrusions 41 are respectively located on the corresponding first bead side 401, and the two protrusions 41 are respectively located at two ends of the bead 4 in the length direction. For two adjacent pressing strips 4 on the magnet mounting surface, when the mounting orientation of the pressing strips 4 is set, it should be ensured that one protruding part 41 in one pressing strip 4 is opposite to one protruding part 41 in the other pressing strip 4 along the circumferential direction of the magnet yoke 1, so that the two protruding parts 41 are close to each other, and further, the distance between the two mutually close protruding parts 41 is smaller than the width of the magnet 32 in the magnetic pole module 3. As shown in fig. 13 and 14, the width of the second protruding portion 312 of the magnetic pole module 3 should be smaller than the width of the magnet 32, and the second protruding portion 312 can be interposed between two protruding portions 41 close to each other.

As shown in fig. 17, the hole cover 5 is close to the first protruding portion 311 of the magnetic pole module 3. As shown in fig. 13 and 14, the second protruding portion 312 of the magnetic pole module 3 is provided between two mutually adjacent protruding portions 41, and the protruding portions 41 abut against the magnets 32 of the magnetic pole module 3. Since the hole cover 5 and the boss 41 are respectively abutted against both ends of the magnetic pole module 3, the magnetic pole module 3 is restricted from moving in the axial direction of the yoke 1.

Alternatively, as shown in fig. 20, in the rotor provided in the embodiment of the present application, a convex portion 41 is provided on each first bead side 401 of the beads 4. In adjacent two of the pressing strips 4, one protruding portion 41 in one pressing strip 4 and one protruding portion 41 in the other pressing strip 4 are opposed to each other in the circumferential direction of the yoke 1 and are close to each other. As shown in fig. 18 and 19, the rotor further includes a plurality of second stoppers 7, and each second stopper 7 is disposed between two corresponding adjacent pressing bars 4. The magnet 32 in the magnetic pole module 3 is abutted with the two mutually close convex parts 41 in the two adjacent pressing strips 4 along the axial direction of the magnetic yoke 1 through the second limiting block 7. The second stopper 7 covers at least a part of the second protruding portion 312 in the radial direction of the yoke 1.

As shown in fig. 20, two protrusions 41 are disposed on the bead 4, the two protrusions 41 are respectively located on the corresponding first bead side 401, and the two protrusions 41 are respectively located at two ends of the bead 4 in the length direction. For two adjacent pressing strips 4 on the magnet mounting surface, when the mounting orientation of the pressing strips 4 is set, it should be ensured that one protruding part 41 in one pressing strip 4 is opposite to one protruding part 41 in the other pressing strip 4 along the circumferential direction of the magnet yoke 1, so that the two protruding parts 41 are close to each other, and further, the distance between the two mutually close protruding parts 41 is smaller than the width of the magnet 32 in the magnetic pole module 3.

For the bead 4 in fig. 15 and the bead 4 in fig. 20, the structure of both beads 4 can be identical. Of course, the two beads 4 may also have a slightly different structure, for example, the protruding length of the protrusion 41 in the bead 4 in fig. 20 is greater than the protruding length of the protrusion 41 in the bead 4 in fig. 15.

As shown in fig. 18 and 19, each magnetic pole module 3 has a corresponding hole cover 5 and a second stopper 7. As shown in fig. 24, the hole cover 5 is close to the first protruding portion 311 of the base plate 31, and the second stopper 7 covers at least a part of the second protruding portion 312 in the radial direction of the yoke 1. The hole cover 5 and the second limiting block 7 are respectively abutted against two ends of the magnetic pole module 3, so that the magnetic pole module 3 is limited to move in the axial direction of the magnetic yoke 1.

The second stopper 7 may be made of a material with a relatively soft texture, for example, the second stopper 7 is made of teflon or nylon. The second limiting block 7 is respectively abutted against the magnet 32 and the convex part 41 in the pressing strip 4, so that rigid contact between the magnet 32 and the convex part 41 is avoided, and the magnetic pole module 3 is prevented from being damaged.

Alternatively, as shown in fig. 21 and 22, the second stopper 7 includes a second stopper bottom surface 702 and two second stopper side surfaces 701 respectively located at both sides of the second stopper bottom surface 702. The second limiting bottom surface 702 faces and is attached to the second protruding portion 312, and a second preset angle is formed between the second limiting side surface 701 and the second limiting bottom surface 702. The two second limiting side surfaces 701 of the magnetic pole module 3 are respectively attached to one first pressing strip side surface 401 of each pressing strip 4 of the two adjacent pressing strips 4.

In contrast to the first stopper 6 shown in fig. 9, the second stopper 7 shown in fig. 21 and 22 is not necessarily fixed to the magnet mounting surface by screws or welding, but is fixed to the magnet mounting surface by the compression bead 4. Specifically, as shown in fig. 23 and 24, the bead 4 includes a first bead bottom surface 402 and two first bead side surfaces 401, and the two first bead side surfaces 401 are respectively located on both sides of the first bead bottom surface 402. The bottom surface 402 of the first pressing strip is opposite to and attached to the magnet mounting surface, and a first preset angle is formed between the side surface 401 of the first pressing strip and the bottom surface 402 of the first pressing strip and is an obtuse angle. Because the second limiting bottom surface 702 of the second limiting block 7 is opposite to and attached to the second protruding portion 312, and the first preset angle and the second preset angle are complementary angles, when the second limiting side surface 701 is attached to the first pressing strip side surface 401, the pressing strip 4 can limit the movement of the magnetic pole module 3 in the radial direction and the circumferential direction of the magnetic yoke 1 at the same time, so that the magnetic pole module 3 is fixed on the magnet mounting surface.

Alternatively, in the rotor provided in the embodiment of the present application, as shown in fig. 5, 6, 7, 13, 14, 18, and 19, the first protruding portion 311 of the magnetic pole module 3 is provided with a rib plate 33, the rib plate 33 is provided with a connecting hole 331, and the connecting hole 331 is directly opposite to the corresponding magnet through hole 101. As can be seen from fig. 1, the hole cover 5 protrudes into the magnet through hole 101, and abuts against the rib 33 of the magnetic pole module 3 facing the magnet through hole 101 in the axial direction of the yoke 1.

The connection holes 331 formed in the rib plate 33 facilitate the detachment of the magnetic pole module 3. For example, the connection hole 331 may be a threaded hole, and when the magnetic pole module 3 needs to enter the magnet through hole 101, a pull rod with a thread at an end portion may be screwed into the threaded hole in the rib plate 33, and the magnetic pole module 3 is sent into the magnet through hole 101 by using the pull rod; similarly, when the magnetic pole module 3 needs to be taken out through the magnet through hole 101, a pull rod with a screw thread at the end can be screwed into a screw hole in the rib plate 33, and the magnetic pole module 3 can be taken out by using the pull rod.

Alternatively, the number of the connecting holes 331 formed in the rib plate 33 may be determined according to actual requirements, and two connecting holes 331 are formed in the rib plate 33 in fig. 5.

Alternatively, in the rotor provided in the embodiment of the present application, as shown in fig. 4, the hole cover 5 includes a cover plate 51, and a boss 52 provided on the cover plate 51. As can be seen in fig. 1, the cover plate 51 is attached to the surface of the flange 11 or the end cap 2. As is clear from fig. 1, 6, 7, 13, 14, 18, and 19, the boss 52 protrudes into the magnet through hole 101, abuts against the rib 33 of the magnetic pole module 3 facing the magnet through hole 101 in the axial direction of the yoke 1, and covers at least a part of the first protruding portion 311 in the radial direction of the yoke 1.

Taking the example of opening the magnet through hole 101 in the flange 11 of the yoke 1, the hole cover 5 is kept away from the flange 11 before the magnetic pole module 3 is attached. The magnetic pole module 3 is placed between two adjacent pressing strips 4 on the magnet mounting surface of the magnetic yoke 1 through the magnet through hole 101, the boss 52 is inserted into the magnet through hole 101 and abutted against the rib plate 33 of the magnetic pole module 3, and then the cover plate 51 is connected with the flange 11. The hole cover 5 can prevent the magnetic pole module 3 from sliding out through the magnet through hole 101, and meanwhile, the magnetic pole module 3 is limited to move along the axial direction of the magnetic yoke 1 by matching with the fixing part of the magnet 32, so that the magnetic pole module 3 is prevented from vibrating when a motor runs; in addition, after the boss 52 extends into the magnet through hole 101, the magnet through hole 101 can be sealed, so that external water vapor or other impurities are prevented from entering the magnet yoke 1 through the magnet through hole 101 to contact with the magnetic pole module 3, and the magnetic pole module 3 is prevented from being corroded.

Alternatively, as shown in fig. 4, the boss 52 includes a first plate 521 and a second plate 522 stacked together, and both ends of the first plate 521 in the width direction respectively extend beyond the second plate 522 to form two step structures. That is, the boss 52 has a substantially T-shaped cross section perpendicular to the longitudinal direction thereof. The first plate 521 and the second plate 522 may be integrally formed, for example, by removing material in a designated area of one plate and forming a step structure on both sides in the width direction. Of course, the first plate 521 and the second plate 522 may be connected together by welding or the like.

As can be seen from fig. 4 and 10, the width of the second plate member 522 matches the distance between the opposite first molding side surfaces 401 of two adjacent molding 4. After the boss 52 of the hole cover 5 is inserted into the magnet through hole 101, the second plate 522 of the boss 52 enters between two adjacent pressing bars 4. In the circumferential direction of the yoke 1, one side surface of the second plate 522 is attached to the first bead side surface 401 of one bead 4, and the other side surface of the second plate 522 is attached to the first bead side surface 401 of the other bead 4; in the radial direction of the yoke 1, the top surface of the second plate 522 faces and is attached to the first protruding portion 311 of the magnetic pole module 3; the boss 52 abuts against the rib 33 of the first protruding portion 311 in the axial direction of the yoke 1. Further, in the radial direction of the yoke 1, the first plate member 521 is fitted with the hold-down bar 4 at a portion thereof beyond the second plate member 522 in the width direction.

Alternatively, in the yoke assembly provided in the embodiment of the present application, the material of the hole cover 5 may be a non-metal. The hole cover 5 may be made of a nonmetal such as plastic, and thus, the weight of the hole cover can be reduced, which contributes to the weight reduction of the motor. Of course, the hole cover 5 may be made of a metal material such as iron.

A flexible pad (not shown) is provided on a portion of the boss 52 facing the rib 33, and the flexible pad is adapted to abut against the rib 33. Because be provided with flexible gasket in the boss 52, consequently for the flexible contact between boss 52 and the floor 33, flexible gasket can play certain cushioning effect, prevents that boss 52 and floor 33 from taking place the rigidity and colliding with. Alternatively, the flexible gasket may be made of rubber, teflon or nylon.

Optionally, the rotor provided by the embodiment of the present application further includes a plurality of connecting members (not shown in the drawings). The cover plate 51 of the aperture cover 5 is connected to the flange 11 or the end cap 2 by a connecting member. The connecting member includes a screw, a bolt or a rivet.

The contact position of the cover plate 51 and the connecting piece, and the joint of the edge of the cover plate 51 and the flange 11 or the end cover 2 are covered with a sealing layer (not shown in the figure). The sealing layer includes a resin layer.

Since the connector needs to penetrate the cover plate 51, there may be a gap at the contact position of the cover plate 51 and the connector; the cover plate 51 is attached to the surface of the flange 11 or the end cap 2, so that a gap may exist at the attachment of the edge of the cover plate 51 to the flange 11 or the end cap 2, and in order to ensure the sealing performance of the magnet via 101, a sealing material (e.g., resin) may be applied to the contact position and the attachment to fill the gap, and finally a sealing layer (e.g., a resin layer) is formed.

Take the connecting piece as a screw as an example. The cover plate 51 of the hole cover 5 is provided with a plurality of threaded through holes. As shown in fig. 1 and 2, a plurality of screw holes are opened around each magnet through hole 101 in the flange 11 of the yoke 1. The cover plate 51 of the hole cover 5 is attached to the surface of the flange 11 of the yoke 1, and screws are inserted through the screw holes in the cover plate 51 and screwed into the screw holes in the flange 11, thereby connecting the cover plate 51 to the flange 11. Similarly, a plurality of threaded holes may be formed around each magnet through hole 101 in the end cap 2, and the cover plate 51 of the hole cap 5 may be connected to the end cap 2 by screws.

Based on the same inventive concept, the embodiment of the application also provides a motor, the motor is a generator or a motor, and the motor comprises the rotor provided by the embodiment of the application.

Optionally, the motor specifically includes: stator, shafting subassembly and the rotor that this application embodiment provided. The stator, the shafting assembly and the rotor are coaxially arranged, and the stator and the rotor are respectively connected with the shafting assembly.

After the magnetic yoke 1 and the end cover 2 in the stator, the shafting assembly and the rotor are sleeved, the magnetic pole module 3 is pushed to the position between the two pressing strips 4 on the magnet mounting surface of the magnetic yoke 1 through the flange 11 or the corresponding magnet through hole 101 in the end cover 2, so that the magnetic pole module 3 is fixed on the magnet mounting surface of the magnetic yoke 1 by the pressing strips 4, and the magnetic yoke 1, the end cover 2 and the magnetic pole module 3 form a complete rotor. For an outer rotor motor as an example, the shafting assembly, the stator and the rotor are coaxially arranged and are sequentially sleeved from inside to outside. The rotor is connected with a moving part in the shafting assembly, and the stator is connected with a non-moving part in the shafting assembly.

Optionally, the motor provided in the embodiment of the present application may be a split motor or a non-split motor. The split motor is based on the consideration of convenient manufacture and transportation, and one or more of a rotor, a stator and an end cover 2 of the motor are divided into a plurality of modules, so that the volume and the weight of a single component are reduced.

Optionally, in the embodiment of the present application, the stator has a split structure, and includes a plurality of stator modules (not shown in the drawings), and the plurality of stator modules are sequentially connected in the circumferential direction. For example, the stator module may be in the shape of a segment, and a plurality of segments are sequentially connected in the circumferential direction to form a complete stator.

Alternatively, in the embodiment of the present application, the yoke 1 has a split structure, and includes a plurality of yoke 1 modules (not shown in the drawings), and the plurality of yoke 1 modules are sequentially connected in the circumferential direction. For example, the yoke 1 module may be in the shape of a segment, and a plurality of segments are connected in sequence along the circumferential direction to form a complete yoke 1.

Optionally, in the embodiment of the present application, the end cap 2 is a split structure, and includes a plurality of end cap 2 modules (not shown in the figure), and the plurality of end cap 2 modules are connected in sequence along the circumferential direction. For example, the end cap 2 module may be in the shape of a sector plate, and a plurality of sectors are sequentially connected along the circumferential direction to form a complete end cap 2.

Based on the same inventive concept, the embodiment of the application also provides a wind generating set, and the wind generating set comprises the generator provided by the embodiment of the application.

By applying the embodiment of the application, at least the following technical effects are achieved:

1. when the rotor provided by the embodiment of the application is applied to a motor, in the assembly process of the motor, the magnet yoke, the end cover and the pressing bar can be assembled into the magnet yoke assembly, and then the magnet yoke assembly, the stator and the shafting assembly are sleeved to relatively fix the parts; and then, the magnetic pole module is pushed between two adjacent pressing strips on the magnet mounting surface of the magnetic yoke through the corresponding magnet through hole in the flange or the end cover, so that the magnetic pole module is fixed on the magnet mounting surface of the magnetic yoke by the pressing strips, then, one part of the hole cover is inserted into the corresponding magnet through hole and is abutted against the magnetic pole module right opposite to the magnet through hole, the other part of the hole cover is connected with the flange or the end cover, and the magnetic pole module is limited to slide out through the magnetic pole through hole.

2. In the rotor provided by the embodiment of the application, the adjacent two pressing strips can firmly fix the magnetic pole module arranged between the two pressing strips on the magnet mounting surface of the magnetic yoke, so that feasible conditions are created for the assembly step of firstly assembling the magnetic yoke assembly and then mounting the magnetic pole module. Because the magnetic yoke assembly, the stator and the shafting assembly are sleeved before the magnetic pole module is installed, the three components are relatively fixed, the magnetic yoke cannot move due to the adsorption force between the magnetic pole module and the stator, and the magnetic yoke is prevented from being impacted or adsorbed with the stator; and, the one end of yoke is connected with the end cover this moment, and the end cover can increase the structural strength of yoke, has avoided the yoke effectively because of the deformation that powerful appeal leads to between magnet and the stator. By using the rotor provided by the embodiment of the application, the structure of the rotor and the structure of the stator can be prevented from being damaged, the workload of part repairing work is reduced, the operation difficulty of motor sleeving is obviously reduced, the working efficiency is improved, and the personal safety of workers is ensured.

3. For the split motor, before the magnetic pole module is installed, the end cover is connected with the magnetic yoke, when the magnetic pole module is installed, the end cover can assist the magnetic yoke to resist the adsorption force of the magnetic pole module, the magnetic yoke is prevented from deforming, the problem that the magnetic yoke is easy to deform during the assembly of the split motor is effectively solved, the design defect of the split motor is overcome, the split motor is beneficial to being widely applied to a large motor, and meanwhile, the transportation problem of the large motor is also solved.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those of ordinary skill in the art.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.

Claims

1. The rotor is characterized by comprising a magnetic yoke (1), an end cover (2), a plurality of magnetic pole modules (3), a pressing bar (4) and a hole cover (5); one end of the two axial ends of the magnetic yoke (1) is provided with a flange (11), and the other end of the two axial ends of the magnetic yoke is connected with the end cover (2);

the pressing strips (4) are arranged on the magnet mounting surface of the magnet yoke (1) at intervals along the circumferential direction, and one magnetic pole module (3) is arranged between every two adjacent pressing strips (4); the magnetic pole module (3) comprises a substrate (31) and a magnet (32) arranged on the substrate (31), wherein two ends of the substrate (31) respectively exceed the magnet (32) in the length direction of the magnet (32) to form a first protruding part (311) and a second protruding part (312);

a plurality of magnet through holes (101) for the magnetic pole modules (3) to pass through are formed in at least one of the flange (11) and the end cover (2) along the circumferential direction; one part of each hole cover (5) extends into the corresponding magnet through hole (101) and is abutted with the magnetic pole module (3) opposite to the magnet through hole (101), and the other part of each hole cover is connected with the flange (11) or the end cover (2).

2. The rotor as recited in claim 1, characterized in that the bead (4) comprises two first bead flanks (401); one first bead side surface (401) of one bead (4) of two adjacent beads (4) is opposite to one first bead side surface (401) of the other bead (4) along the circumferential direction of the yoke (1);

the pole module (3) comprises two first pole flanks (301); the two first magnetic pole side surfaces (301) are respectively attached to the first pressing strip side surfaces (401) of each of the two adjacent pressing strips (4) in the pressing strips (4).

3. The rotor as claimed in claim 2, characterized in that the bead (4) further comprises a first bead base surface (402), the two first bead side surfaces (401) being located on either side of the first bead base surface (402); the bottom surface (402) of the first pressing strip is opposite to and attached to the magnet mounting surface, a first preset angle is formed between the side surface (401) of the first pressing strip and the bottom surface (402) of the first pressing strip, and the first preset angle is an obtuse angle;

the magnetic pole module (3) further comprises a first magnetic pole bottom surface (302), and the two first magnetic pole side surfaces (301) are respectively positioned on two sides of the first magnetic pole bottom surface (302); the first magnetic pole bottom surface (302) is opposite to and attached to the magnet installation surface, a second preset angle is formed between the first magnetic pole side surface (301) and the first magnetic pole bottom surface (302), and the first preset angle and the second preset angle are complementary angles;

the two first magnetic pole side surfaces (301) of the magnetic pole module (3) are respectively attached to the first pressing strip side surface (401) of each pressing strip (4) in the two adjacent pressing strips (4).

4. The rotor according to claim 3, characterized in that the first pole bottom face (302) of the pole module (3) is the bottom face of the base plate (31) remote from the magnet (32), the first pole side face (301) of the pole module (3) comprising the side face of the magnet (32) and the side face of the base plate (31).

5. The rotor according to claim 4, characterized by further comprising a plurality of first limit blocks (6), wherein the plurality of first limit blocks (6) correspond to the plurality of magnetic pole modules (3) one by one; the hole cover (5) and the first limiting block (6) which correspond to the same magnetic pole module (3) are respectively close to two ends of the magnetic pole module (3) in the length direction;

the first limiting block (6) is connected to the magnet mounting surface, abuts against the corresponding magnet (32) in the magnetic pole module (3) along the axial direction of the magnetic yoke (1), and covers the second extending portion (312) in the magnetic pole module (3) along the radial direction of the magnetic yoke (1).

6. The rotor according to claim 5, characterized in that the first stopper (6) comprises a top plate (61), a first block (62) and a second block (63);

the first block body (62) and the second block body (63) are fixed on the same side of the top plate (61) and are adjacent to each other along the axial direction of the magnetic yoke (1), and the thickness of the first block body (62) is larger than that of the second block body (63);

the first block body (62) and the second block body (63) are arranged between the opposite first batten side surfaces (401) of two adjacent battens (4); the first block (62) is attached and connected to the magnet mounting surface; the second block (63) abuts against the magnet (32) in the corresponding pole module (3) in the axial direction of the yoke (1), and covers the second protruding portion (312) in the pole module (3) in the radial direction of the yoke (1);

the two ends of the top plate (61) in the circumferential direction of the magnetic yoke (1) respectively exceed the first block (62), and the part of the top plate (61) exceeding the first block (62) covers a part of the pressing strip (4) along the radial direction of the magnetic yoke (1).

7. The rotor as recited in claim 4, characterized in that a projection (41) is provided on each first bead side (401) of the bead (4); in two adjacent pressing strips (4), one protruding part (41) in one pressing strip (4) and one protruding part (41) in the other pressing strip (4) are opposite and close to each other along the circumferential direction of the magnetic yoke (1);

the second protruding portion (312) of the base plate (31) is disposed between the two protruding portions (41) that are close to each other, and the magnet (32) of the magnetic pole module (3) abuts against the two protruding portions (41) that are close to each other in the axial direction of the magnetic yoke (1).

8. The rotor as recited in claim 4, characterized in that a projection (41) is provided on each first bead side (401) of the bead (4); in two adjacent pressing strips (4), one protruding part (41) in one pressing strip (4) and one protruding part (41) in the other pressing strip (4) are opposite and close to each other along the circumferential direction of the magnetic yoke (1);

the rotor further comprises a plurality of second limiting blocks (7), and each second limiting block (7) is arranged between two corresponding adjacent pressing strips (4); the magnet (32) in the magnetic pole module (3) is abutted to the two mutually close protrusions (41) in the two adjacent pressing strips (4) along the axial direction of the magnetic yoke (1) through the second limiting block (7); the second stopper (7) covers at least a part of the second protruding portion (312) in the radial direction of the yoke (1).

9. The rotor according to claim 8, characterized in that the second limiting block (7) comprises a second limiting bottom surface (702) and two second limiting side surfaces (701) respectively located at two sides of the second limiting bottom surface (702); the second limiting bottom surface (702) is opposite to and attached to the second extending part (312), and a second preset angle is formed between the second limiting side surface (701) and the second limiting bottom surface (702);

the two second limiting side surfaces (701) of the magnetic pole module (3) are respectively attached to the first pressing strip side surface (401) of each of the two adjacent pressing strips (4) in the pressing strip (4).

10. The rotor as recited in claim 4, wherein a rib plate (33) is disposed on the first protruding portion (311), a connecting hole (331) is disposed on the rib plate (33), and the connecting hole (331) is opposite to the corresponding magnet through hole (101);

the hole cover (5) is inserted into the magnet through hole (101) and is abutted against the rib plate (33) of the magnetic pole module (3) which is opposite to the magnet through hole (101) along the axial direction of the magnetic yoke (1).

11. The rotor according to claim 10, characterized in that the hole cover (5) comprises a cover plate (51) and a boss (52) provided on the cover plate (51); the cover plate (51) is attached to the surface of the flange (11) or the end cover (2); the boss (52) protrudes into the magnet through hole (101), abuts against the rib plate (33) of the magnetic pole module (3) facing the magnet through hole (101) in the axial direction of the magnetic yoke (1), and covers at least a part of the first protruding portion (311) in the radial direction of the magnetic yoke (1).

12. The rotor of claim 4, comprising at least one of:

a plurality of magnet through holes (101) are circumferentially provided only in the flange (11), the first protruding portions (311) of all the magnetic pole modules (3) are directed toward the flange (11) in the axial direction of the yoke (1), and the second protruding portions (312) of all the magnetic pole modules (3) are directed toward the end cover (2) in the axial direction of the yoke (1);

a plurality of magnet through holes (101) are circumferentially provided only in the end cover (2), the first protruding portions (311) of all the magnetic pole modules (3) are directed toward the end cover (2) in the axial direction of the yoke (1), and the second protruding portions (312) of all the magnetic pole modules (3) are directed toward the flange (11) in the axial direction of the yoke (1);

a plurality of magnet through holes (101) are circumferentially arranged in both the flange (11) and the end cover (2), the first protrusion (311) of a part of the magnetic pole modules (3) is close to the flange (11), and the second protrusion (312) of the part of the magnetic pole modules (3) is close to the end cover (2); the first protrusion (311) of the other part of the pole modules (3) is close to the end cover (2), and the second protrusion (312) of the other part of the pole modules (3) is close to the flange (11).

13. The rotor of claim 1, comprising at least one of:

the end cover (2) is an annular plate, and the outer diameter of the end cover (2) is matched with that of the magnet yoke (1);

the magnet yoke (1) and the end cover (2) are connected in a welding mode, detachably or integrally formed.

14. An electrical machine, which is a generator or a motor, comprising a rotor according to any one of claims 1-13.

15. A wind power plant comprising an electrical machine according to claim 14.