CN210578039U - Motor and electrical equipment - Google Patents

Abstract

The application provides a motor, which comprises a stator assembly, a rotor assembly and two end covers, wherein the stator assembly comprises a stator core, the two end covers are respectively arranged at two ends of the stator core and are respectively and fixedly connected with the stator core, the rotor assembly comprises a rotor core arranged in a central cavity of the stator core, a rotating shaft penetrating through the center of the rotor core and two bearings respectively arranged on the rotating shaft, the two bearings are respectively supported on the two end covers, the end covers comprise a connecting frame and a bearing frame which are mutually connected, the connecting frame is fixedly connected with the stator core, and the bearing frame is used for supporting the bearings; the connecting frame and the bearing frame in at least one end cover are of a separated structure, so that the relative position of the connecting frame and the bearing frame during assembly can be adjusted. An electrical apparatus comprises the motor. The motor that this application provided is the design of disconnect-type structure through an at least end cover, can adjust the size and the homogeneity of air gap in the assembling process to reduce the influence of end cover and stator core critical dimension fluctuation to motor air gap homogeneity.

Description

Motor and electrical equipment

Technical Field

The application belongs to the technical field of motors, and particularly relates to a motor and electrical equipment.

Background

The air gap is the gap between the stator and the rotor of the motor. The size of the air gap is different according to different motors, and generally speaking, the air gap of an asynchronous motor is small, and the air gap of a synchronous motor is large. Therefore, the performance of the asynchronous motor is greatly influenced by the air gap between the stator and the rotor, and the size and the uniformity of the air gap are limited by the manufacturing technology of the motor and the manufacturing precision of key materials such as a stator and rotor core, an end cover and the like. The air gap is reduced and the uniformity of the air gap is improved by improving the manufacturing precision of key materials such as a stator and rotor iron core, an end cover and the like, so that the aim of improving the performance of a motor is fulfilled. However, under the influence of manufacturing equipment, process and materials, the accuracy of the end cover and the stator-rotor core is improved to a limited extent, and the material manufacturing cost is also increased significantly to improve the air gap accuracy.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a motor, so as to solve the technical problem that the air gap of the motor is difficult to control.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions: the motor comprises a stator assembly, a rotor assembly and two end covers, wherein the stator assembly comprises a stator core, the two end covers are respectively arranged at two ends of the stator core and are respectively and fixedly connected with the stator core, the rotor assembly comprises a rotor core arranged in a central cavity of the stator core, a rotating shaft penetrating through the center of the rotor core and two bearings respectively arranged on the rotating shaft, the two bearings are respectively supported on the two end covers, the end covers comprise a connecting frame and a bearing frame which are connected with each other, the connecting frame is fixedly connected with the stator core, and the bearing frame is used for supporting the bearings; the connecting frame and the bearing frame in at least one end cover are of a separated structure, so that the relative positions of the connecting frame and the bearing frame during assembly can be adjusted;

the connecting frame comprises a frame plate and connecting plates respectively arranged at two opposite ends of the frame plate, the frame plate is in a long plate shape and is opposite to the stator core, and the connecting plates extend towards the stator core from the frame plate and are fixedly connected with the stator core.

Optionally, the two end caps are respectively a first end cap and a second end cap, the first end cap is of a split structure, the first end cap includes a first connecting frame and a first bearing frame, and the first connecting frame includes a first frame plate and two first connecting plates; the first frame plate and the first bearing frame are fixed in a welding, riveting, screw connection or buckling mode.

Optionally, a first mounting hole is formed in the center of the first frame plate, the first bearing frame comprises a cylinder body with a bearing chamber, the inner diameter of the first mounting hole is larger than the outer diameter of the cylinder body, and the cylinder body is mounted at the first mounting hole and connected with the first frame plate.

Optionally, the connection position between the first frame plate and the cylinder is adjustable along the radial direction of the rotating shaft.

Optionally, the barrel periphery extends there is first mounting panel, the external diameter of first mounting panel is less than the width of first frame plate, just the external diameter of first mounting panel is greater than the internal diameter of first mounting hole, first mounting panel fold locate on the first frame plate and with first frame plate fixed connection, the barrel is protruding to be located first mounting panel is kept away from one side of stator core.

Optionally, the first mounting plate extends from the barrel outer end periphery, and the first mounting plate is folded on the first frame plate inside or outside.

Optionally, the connection position between the first frame plate and the cylinder is adjustable along the axial direction of the rotating shaft.

Optionally, the outer circumferential wall of the cylinder is fixedly connected with the inner circumferential wall of the first mounting hole.

Optionally, the inner peripheral wall of the first mounting hole extends towards the stator core, and a second mounting plate is arranged on the inner peripheral wall of the cylinder and fixedly connected with the inner peripheral wall of the second mounting plate.

Optionally, a third mounting plate extends from the outer periphery of the cylinder, and an outer peripheral wall of the third mounting plate is fixedly connected with an inner peripheral wall of the first mounting hole.

Optionally, a third mounting plate extends from the outer periphery of the cylinder, and an outer side wall of the third mounting plate is fixedly connected with an inner peripheral wall of the first mounting hole.

Optionally, the first bearing bracket is an integral tensile structure of a metal material.

Optionally, a fourth mounting plate is arranged at one end, far away from the frame plate, of the connecting plate, and the fourth mounting plate is abutted against the end face of the stator core; at least one second mounting hole is formed in the fourth mounting plate, at least one third mounting hole is formed in the periphery of the stator core, and the second mounting holes and the third mounting holes are locked in a one-to-one correspondence mode.

Optionally, the protruding muscle that is equipped with of stator core periphery, the third mounting hole set up in on the protruding muscle, the fourth mounting panel with the protruding muscle butt.

Optionally, two sets of oppositely arranged rib groups are convexly arranged on the periphery of the stator core, and each rib group comprises two ribs arranged at intervals; the fourth mounting panel is including being located the extension in the connecting plate outside, and be located the connecting foot that the connecting plate is inboard and the interval set up, each connect the foot with one protruding muscle butt, each connect to be equipped with one on the foot the second mounting hole.

Optionally, the second end cover is a separate structure, a connection position of the connection frame of one of the first end cover and the second end cover and the bearing frame in the radial direction is adjustable, and a connection position of the connection frame of the other of the first end cover and the second end cover and the bearing frame in the axial direction is adjustable.

The embodiment of the application also provides electrical equipment which comprises the motor.

The motor that this application embodiment provided has: compared with the prior art, the motor of the embodiment of the application has the advantages that the connecting frame and the bearing frame in at least one end cover are arranged to be of the separated structure, so that for the end cover with the separated structure of the connecting frame and the bearing frame, when the stator core, the rotor core, the rotating shaft and the two bearings are installed, the connecting frame and the stator core can be connected firstly, the bearings are supported in the bearing frame, then the air gap between the stator core and the rotor core is tested, then the connecting position of the bearing frame and the connecting frame is adjusted according to the size of the air gap, and finally the connecting frame and the bearing frame are fixedly connected, so that the size and uniformity of the air gap can be adjusted in the assembling process, the influence of the fluctuation of the key size of the end cover and the stator core on the uniformity of the air gap of the motor is reduced, the performance of the motor is improved, and the air gap of the motor is reduced under the condition that the manufacturing accuracy of the stator core, the performance of the motor is improved, and the cost of the motor can be reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

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

FIG. 2 is a schematic structural diagram of a first end cap according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural view of the first connecting frame in FIG. 2;

FIG. 4 is a schematic structural view of the first bearing frame of FIG. 2;

fig. 5 is a schematic structural view of the stator core of fig. 1;

FIG. 6 is a schematic structural diagram of a second endcap provided in an embodiment of the present application;

FIG. 7 is a schematic structural view of a first endcap according to another embodiment of the present application;

FIG. 8 is a schematic structural view of a first endcap according to yet another embodiment of the present application;

fig. 9 is a schematic structural diagram of a first end cap according to yet another embodiment of the present application.

Wherein, in the figures, the respective reference numerals:

1-a stator assembly; 2-a rotor assembly; 3-end cover; 11-a stator core; 21-a rotor core; 22-a rotating shaft; 31-a connecting frame; 32-a bearing bracket; 311-frame plate; 312-connecting plate; 111-ribs; 1110-a third mounting hole; 3 a-a first end cap; 31 a-first link frame; 32 a-first bearing bracket; 311 a-a first shelf; 312 a-first connection board; 313 a-a fourth mounting plate; 314-a second mounting plate; 321 a-a cylinder body; 322 a-a first mounting plate; 323-a third mounting plate; 3110 a-first mounting hole; 3130 a-a second mounting hole; 3211 a-bearing chamber; 3212 a-through hole; 3 b-a second end cap; 31 b-a second link; 32 b-a second bearing bracket; 311 b-a second shelf; 312 b-second connecting plate.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.

Furthermore, 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 implicitly indicating 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 application, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1, a motor provided in an embodiment of the present application will now be described.

The motor comprises a stator assembly 1, a rotor assembly 2 and two end covers 3. Stator module 1 includes stator core 11 and coil, stator core 11 has a central cavity, the coil is around locating on stator core 11, 11 both ends of stator core are located respectively to both ends lid 3 and respectively with 11 fixed connection of stator core, rotor subassembly 2 includes rotor core 21, pivot 22 and two bearings, rotor core 21 is located in stator core 11's central cavity, pivot 22 runs through rotor core 21 center, two bearings are located respectively on pivot 22, and two bearings are located respectively on both ends lid 3, be used for supporting pivot 22.

The end cover 3 comprises a connecting frame 31 and a bearing frame 32, the connecting frame 31 is connected with the bearing frame 32, the connecting frame 31 is fixedly connected with the stator core 11, and the bearing frame 32 is used for supporting a bearing.

The connecting frame 31 and the bearing frame 32 in at least one end cap 3 are of a separate structure, so that the relative position of the connecting frame 31 and the bearing frame 32 can be adjusted during assembly, and the separate structure means that only the connecting frame 31 and the bearing frame 32 are mutually independent parts and are not integrally formed, and the connecting frame 31 and the bearing frame 32 form the end cap 3 after being assembled. The method specifically comprises the following three conditions: 1. in fig. 1, the connecting frame 31 and the bearing frame 32 of the upper end cover 3 and the lower end cover 3 are of a separated structure; 2. In fig. 1, the connecting frame 31 and the bearing frame 32 of the upper end cover 3 are of a separate structure, and the connecting frame 31 and the bearing frame 32 of the lower end cover 3 are of an integrated structure; 3. in fig. 1, the connecting frame 31 and the bearing frame 32 of the upper end cover 3 are of an integrated structure, and the connecting frame 31 and the bearing frame 32 of the lower end cover 3 are of a separated structure. Specifically, when one end cover 3 is of a separate structure and the other end cover 3 is of an integrated structure, after the end cover 3 of the integrated structure and the stator core 11 are installed, the connecting frame 31 of the end cover 3 of the separate structure is fixedly connected with the stator core 11, the bearing frame 32 of the end cover is connected with the bearing, and finally the connecting frame 31 is fixedly connected with the bearing frame 32; when the upper end cover 3 and the lower end cover 3 are both of a separate structure, the connecting frame 31 and the bearing frame 32 of one end cover 3 can be installed before being fixed with the stator core 11, and then the connecting frame 31 and the bearing frame 32 of the other end cover 3 can be installed after being fixed with the stator core 11.

The motor provided by the application sets the connecting frame 31 and the bearing frame 32 in at least one end cover 3 to be of a separated structure, then for the end cover 3 of which the connecting frame 31 and the bearing frame 32 are of the separated structure, when the stator core 11, the coil, the rotor core 21, the rotating shaft 22 and two bearings are all installed, the connecting frame 31 and the stator core 11 can be firstly connected, the bearing is supported at any position in the bearing frame 32, then the air gap between the stator core 11 and the rotor core 21 is tested, the air gap is continuously adjusted until the air gap meets the requirement, the position of the bearing frame 32 is fixed, and finally the connecting frame 31 and the bearing frame 32 are fixedly connected, so that the size and the uniformity of the air gap can be adjusted in the assembling process, the influence of the fluctuation of the key size of the end cover 3 and the stator core 11 on the uniformity of the air gap of the motor is reduced, and the performance of the motor is improved, and the air gap of the motor is reduced under the condition of not improving the manufacturing precision of the stator core 11, the rotor core 21, the end cover 3 and the like, the performance of the motor is improved, and the cost of the motor can be reduced.

Specifically, referring to fig. 1, the connecting frame 31 includes a frame plate 311 and two connecting plates 312, the frame plate 311 is in a long plate shape and is disposed opposite to the stator core 11, the two connecting plates 312 are respectively disposed at two opposite ends of the frame plate 311, and the connecting plates 312 extend from the frame plate 311 toward the stator core 11 and are fixedly connected to the stator core 11.

Referring to fig. 2, the two end caps 3 are a first end cap 3a and a second end cap 3b, respectively, the first end cap 3a is a separate structure, the first end cap 3a includes a first connecting frame 31a and a first bearing frame 32a, the first connecting frame 31a includes a first frame plate 311a and two first connecting plates 312 a; the first frame plate 311a and the first bearing frame 32a are fixed by welding, riveting, screwing or fastening. That is, after the first frame plate 311a is fixedly connected to the stator core 11 and the uniformity of the motor air gap is adjusted, the first bearing frame 32a and the first frame plate 311a may be directly welded, riveted, screwed or fastened. In this embodiment, the first bearing frame 32a and the first frame plate 311a are fixedly connected by welding, riveting, screwing or fastening, so that the connection position between the first bearing frame 32a and the first frame plate 311a is not limited, that is, the connection position between the first bearing frame 32a and the first frame plate 311a can be adjusted as required, and further, the uniformity of the air gap of the motor can be adjusted, so as to improve the performance of the motor. Of course, in other embodiments of the present application, the fixing manner between the first frame plate 311a and the first bearing frame 32a may be other types, and is not limited herein.

Referring to fig. 3 and 4, in the present embodiment, a first mounting hole 3110a is formed in the center of the first frame plate 311a, the first bearing frame 32a includes a cylindrical barrel 321a having a bearing chamber 3211a, an inner diameter of the first mounting hole 3110a is greater than an outer diameter of the barrel 321a, the barrel 321a is disposed at the first mounting hole 3110a and fixedly connected to the first frame plate 311a, and the bearing is mounted in the bearing chamber 3211 a.

Specifically, when the end surface of the stator core 11 is perpendicular to the rotating shaft 22, the first frame plate 311a is parallel to the end surface of the stator core 11, the first connecting plate 312a and the first frame plate 311a are in an integral connecting structure, the first connecting plate 312a and the first frame plate 311a are formed by metal integral punching, and the outer end of the first connecting plate 312a abuts against the end surface of the stator core 11.

In one embodiment, the connection position between the first frame plate 311a and the cylinder 321a is adjustable along the radial direction of the rotating shaft 22, so that the uniformity of the air gap between the stator core 11 and the rotor core 21 along the radial direction can be adjusted as required to improve the performance of the motor.

In the above embodiment, the first mounting plate 322a extends from the outer periphery of the cylinder 321a, the outer diameter of the first mounting plate 322a is smaller than the width of the first frame plate 311a, the outer diameter of the first mounting plate 322a is larger than the inner diameter of the first mounting hole 3110a, the first mounting plate 322a is stacked on the first frame plate 311a and fixedly connected with the first frame plate 311a, and the cylinder 321a is convexly disposed on the side of the first mounting plate 322a away from the stator core 11.

Specifically, in one embodiment, the first mounting plate 322a extends from the cylinder 321a near one end of the stator core, the first mounting plate 322a is disposed parallel to the first frame plate 311a, and the first mounting plate 322a is stacked on the outer side of the first frame plate 311a, where the "outer side" refers to a side facing away from the stator core 11. When the bearing is installed, the first mounting plate 322a is stacked on the outer side of the first frame plate 311a in parallel, and the cylinder 321a is protruded on the side of the first mounting plate 322a away from the stator core 11, because the first mounting plate 322a is only stacked on the first frame plate 311a in parallel, but the connection position between the first mounting plate 322a and the first frame plate 311a is not limited, the connection position of the first mounting plate 322a on the first frame plate 311a can be adjusted by sliding the first mounting plate 322a horizontally on the first frame plate 311a, so as to realize the radial adjustment of the position of the bearing in the first mounting hole 3110a, after the adjustment is completed, the first mounting plate 322a and the first frame plate 311a are fixedly connected, so as to realize the adjustment and fixation of the radial position of the rotating shaft 22 and the first connecting plate 312a, and realize the radial air gap uniformity adjustment of the stator core 11 and the rotor core 21, to improve motor performance.

In other embodiments of the present application, the first mounting plate 322a extends from the cylinder 321a near one end of the stator core, and the first mounting plate 322a is stacked on the inner side of the first frame plate 311a, where the "inner side" refers to the side facing the stator core 11. In this way, the position of the first mounting plate 322a connected to the first frame plate 311a can be adjusted by sliding the first mounting plate 322a horizontally on the first frame plate 311a, so as to achieve radial adjustment of the position of the bearing in the first mounting hole 3110 a. Here, when the first mounting plate 322a is stacked inside the first frame plate 311a, the first bearing frame 32a is first mounted, then the first connecting frame 31a is mounted, the first bearing frame 32a is inserted into the first mounting hole 3110a of the first connecting frame 31a, the air gap is adjusted to meet the requirement, and finally the first connecting frame 31a and the first bearing frame 32a are connected.

In other embodiments of the present application, the connection position between the first frame plate 311a and the cylinder 321a may also be adjustable along the axial direction of the rotating shaft 22, so that the uniformity of the air gap between the stator core 11 and the rotor core 21 along the axial direction may be adjusted as required to improve the performance of the motor.

In an embodiment of the axial air gap adjustment, referring to fig. 7, the cylinder 321a is not provided with the first mounting plate 322a, but is fixedly connected between an outer circumferential wall (e.g., P surface in fig. 7) of the cylinder 321a and an inner circumferential wall (e.g., M surface in fig. 7) of the first mounting hole 3110a by welding, riveting, screwing or buckling, and at this time, an outer diameter of the cylinder 321a is adapted to an inner diameter of the first mounting hole 3110 a. When the cylindrical body 321a is installed in the first installation hole 3110a, and the outer circumferential wall of the cylindrical body 321a is attached to the inner circumferential wall of the first installation hole 3110a, the cylindrical body 321a may be axially moved in the first installation hole 3110a according to the requirement of the axial air gap between the stator core 11 and the rotor core 21, so as to adjust the uniformity of the axial air gap, and finally, the outer circumferential wall of the cylindrical body 321a may be fixedly connected to the inner circumferential wall of the first installation hole 3110 a.

In other embodiments of axial air gap adjustment, referring to fig. 8, the inner peripheral wall of the first mounting hole 3110a extends toward the stator core 11 to form a second mounting plate 314, and the outer peripheral wall (M surface in fig. 8) of the cylinder 321a is fixedly connected to the inner peripheral wall of the second mounting plate 314. When the cylinder 321a is installed in the first installation hole 3110a and the outer circumferential wall of the cylinder 321a is attached to the inner circumferential wall of the second installation plate 314, the cylinder 321a may be axially moved in the first installation hole 3110a according to the requirement of the axial air gap between the stator core 11 and the rotor core 21, so as to adjust the uniformity of the axial air gap.

In still other embodiments of the axial air gap adjustment, referring to fig. 9, a third mounting plate 323 extends from the outer periphery of the cylinder 321a, and the outer peripheral wall of the third mounting plate 323 is fixedly connected to the inner peripheral wall (e.g., P-side in fig. 9) of the first mounting hole 3110 a. When the cylindrical body 321a is installed in the first installation hole 3110a and the outer circumferential wall of the third installation plate 323 is attached to the inner circumferential wall of the first installation hole 3110a, the cylindrical body 321a may be axially moved in the first installation hole 3110a according to the requirement of the axial air gap between the stator core 11 and the rotor core 21, so as to adjust the uniformity of the axial air gap.

In the present embodiment, the first bearing frame 32a is an integral stretching structure made of metal material, which has a simple structure and a simple manufacturing process, and can ensure the installation accuracy of the whole first bearing frame 32 a.

Referring to fig. 3 and 5, a fourth mounting plate 313a is disposed at an end of the connecting plate 312a away from the frame plate, and the fourth mounting plate 313a abuts against an end surface of the stator core 11; the fourth mounting plate 313a is provided with at least one second mounting hole 3130a, the periphery of the stator core 11 is provided with at least one third mounting hole 1110, and each second mounting hole 3130a is locked with each third mounting hole 1110 in a one-to-one correspondence manner. Specifically, the third mounting holes 1110 axially penetrate through the stator core 11, and are fastened by bolts through the second mounting holes 3130a and the third mounting holes 1110 on the end covers 3 and nuts, respectively, during mounting.

Referring to fig. 5, the outer circumference of the stator core 11 is protruded with a rib 111, the third mounting hole 1110 is opened on the rib 111, and the fourth mounting plate 313a is abutted against the rib 111.

Two sets of oppositely arranged convex rib groups are convexly arranged on the periphery of the stator iron core 11, and each convex rib group comprises two convex ribs 111 which are arranged at intervals; the fourth mounting plate 313a includes an extension 3131a located outside the connecting plate 312 and connecting legs 3132a located inside the connecting plate 312 and spaced apart from each other, each connecting leg 3132a abuts against a rib 111, and each connecting leg 3132a has a second mounting hole 3130 a.

In one embodiment, the first end cover and the second end cover are of a split structure, the connection position of the connecting frame 31 and the bearing frame 32 of one of the first end cover and the second end cover in the radial direction is adjustable, and the connection position of the connecting frame 31 and the bearing frame 32 of the other of the first end cover and the second end cover in the axial direction is adjustable, so that the uniformity of air gaps between the stator core 11 and the rotor core in the axial direction and the radial direction can be adjusted as required to improve the performance of the motor. The first end cover and the second end cover can adopt any one of the separated structures which can realize radial and axial air gap adjustment.

In another embodiment, referring to fig. 6, the second end cap 3b is an integrated structure, the second end cap 3b includes a second connecting frame 31b and a second bearing frame 32b, and the second connecting frame 31b and the second bearing frame 32b are integrated, that is, the second connecting frame 31b and the second bearing frame 32b can be manufactured by a sheet metal drawing process to form the second end cap 3 b. The second connecting frame 31b includes a second frame plate 311b and two second connecting plates 312b, and the two second connecting plates 312b are respectively disposed on two opposite ends of the second frame plate 311 b.

The application also provides electrical equipment comprising the motor. The application of the electric equipment improves the use performance of the electric equipment through the arrangement of the motor.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (16)

1. The motor comprises a stator assembly, a rotor assembly and two end covers, wherein the stator assembly comprises a stator core, the two end covers are respectively arranged at two ends of the stator core and are respectively and fixedly connected with the stator core, the rotor assembly comprises a rotor core arranged in a central cavity of the stator core, a rotating shaft penetrating through the center of the rotor core and two bearings respectively arranged on the rotating shaft, and the two bearings are respectively supported on the two end covers; the connecting frame and the bearing frame in at least one end cover are of a separated structure, so that the relative positions of the connecting frame and the bearing frame during assembly can be adjusted;

the connecting frame comprises a frame plate and connecting plates respectively arranged at two opposite ends of the frame plate, the frame plate is in a long plate shape and is opposite to the stator core, and the connecting plates extend towards the stator core from the frame plate and are fixedly connected with the stator core.

2. The motor of claim 1, wherein the two end caps are a first end cap and a second end cap respectively, the first end cap is a split structure, the first end cap comprises a first connecting frame and a first bearing frame, and the first connecting frame comprises a first frame plate and two first connecting plates; the first frame plate and the first bearing frame are fixed in a welding, riveting, screw connection or buckling mode.

3. The motor of claim 2, wherein the first frame plate has a first mounting hole formed at a center thereof, the first bearing bracket includes a cylinder having a bearing chamber, an inner diameter of the first mounting hole is larger than an outer diameter of the cylinder, and the cylinder is mounted at the first mounting hole and coupled to the first frame plate.

4. The motor according to claim 3, wherein a coupling position between the first frame plate and the cylinder is adjustable in a radial direction of the rotation shaft.

5. The motor of claim 4, wherein a first mounting plate extends from the outer periphery of the cylinder, the outer diameter of the first mounting plate is smaller than the width of the first frame plate, the outer diameter of the first mounting plate is larger than the inner diameter of the first mounting hole, the first mounting plate is stacked on the first frame plate and fixedly connected with the first frame plate, and the cylinder is protruded from one side of the first mounting plate, which is far away from the stator core.

6. The motor according to claim 5, wherein the first mounting plate extends from a peripheral edge of an end of the cylinder adjacent to the stator core, and the first mounting plate is stacked inside or outside the first frame plate.

7. The motor according to claim 3, wherein a coupling position between the first frame plate and the cylinder is adjustable in an axial direction of the rotation shaft.

8. The motor of claim 7, wherein the outer peripheral wall of the cylinder is fixedly connected to the inner peripheral wall of the first mounting hole.

9. The motor according to claim 7, wherein a second mounting plate extends from an inner peripheral wall of the first mounting hole in a direction toward the stator core, and an outer peripheral wall of the cylinder is fixedly connected to an inner peripheral wall of the second mounting plate.

10. The motor of claim 7, wherein a third mounting plate extends from the outer periphery of the cylinder, and the outer peripheral wall of the third mounting plate is fixedly connected with the inner peripheral wall of the first mounting hole.

11. An electrical machine according to any of claims 2 to 10, wherein the first bearing carrier is an integral drawn structure of metallic material.

12. An electric machine as claimed in any one of claims 1 to 10, wherein the end of the connecting plate remote from the frame plate is provided with a fourth mounting plate, the fourth mounting plate abutting against the end face of the stator core; at least one second mounting hole is formed in the fourth mounting plate, at least one third mounting hole is formed in the periphery of the stator core, and the second mounting holes and the third mounting holes are locked in a one-to-one correspondence mode.

13. The motor of claim 12, wherein a rib is protruded from an outer periphery of the stator core, the third mounting hole is opened in the rib, and the fourth mounting plate abuts against the rib.

14. The motor of claim 13 wherein said stator core has two sets of oppositely disposed ribs projecting from the periphery thereof, each said set of ribs including two spaced ribs; the fourth mounting panel is including being located the extension in the connecting plate outside, and be located the connecting foot that the connecting plate is inboard and the interval set up, each connect the foot with one protruding muscle butt, each connect to be equipped with one on the foot the second mounting hole.

15. The electric machine of any one of claims 2 to 10 wherein said second end cap is of split construction, the attachment of said connecting bracket of one of said first and second end caps to said bearing bracket being adjustable in position in the radial direction, and the attachment of said connecting bracket of the other of said first and second end caps to said bearing bracket being adjustable in position in the axial direction.

16. Electrical apparatus, characterized in that it comprises an electrical machine according to any one of claims 1 to 15.

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