CN218940827U

CN218940827U - Motor assembly

Info

Publication number: CN218940827U
Application number: CN202320090104.0U
Authority: CN
Inventors: 高门门; 尹方; 吴楠; 杨震方; 宋雅君; 马玲
Original assignee: Tianjin Songzheng Intelligent Equipment Co ltd
Current assignee: Tianjin Songzheng Intelligent Equipment Co ltd
Priority date: 2023-01-31
Filing date: 2023-01-31
Publication date: 2023-04-28
Anticipated expiration: 2033-01-31

Abstract

The utility model relates to the technical field of motors and discloses a motor assembly, wherein a bearing installation space is formed in a space between the outer peripheral wall of a rotor assembly and the inner peripheral wall of an installation hole, a bearing body of a sliding bearing is installed in the bearing installation space, meanwhile, a bearing end cover and a bearing side plate have thrust functions, the sliding bearing replaces the traditional radial sliding bearing and thrust sliding bearing, the number of parts of the motor assembly can be reduced, the axial length of a rotor shaft can be shortened, the effects of reducing the axial occupied space of the motor assembly and the weight of the motor assembly are achieved, and meanwhile, the rotor shaft can reach higher rotating speed when the motor assembly works.

Description

Motor assembly

Technical Field

The utility model relates to the technical field of motors, in particular to a motor assembly.

Background

The motor comprises a shell and a rotor, wherein the two ends of the rotor are connected with rotor shafts, penetrating holes which are arranged along the axial direction of the rotor shafts in a penetrating way are formed in the shell, a radial sliding bearing is arranged between one rotor shaft and each penetrating hole, and a radial sliding bearing and a thrust sliding bearing are arranged between the other rotor shaft and each penetrating hole, wherein the radial sliding bearings and the thrust sliding bearings are distributed along the axial direction of the rotor shaft and are positioned at the inner side of the thrust sliding bearing; the radial sliding bearing is fixed on the shell, the thrust sliding bearing is fixedly arranged on the rotor shaft, and a sealing oil film is formed between the thrust sliding bearing and the inner wall of the penetrating hole.

The large axial dimensions of the above-mentioned type of motor increase the axial space taken up by the motor and the weight of the motor, and the above-mentioned design is not suitable for rotors with high rotational speeds from the standpoint of rotor dynamics.

Disclosure of Invention

The utility model aims to provide a motor assembly which can shorten the axial length of a motor, reduce the axial occupied space of the motor and the weight of the motor and can be applied to a rotor with high rotating speed.

To achieve the purpose, the utility model adopts the following technical scheme:

a motor assembly, comprising:

the stator assembly is provided with a mounting hole which is arranged along the axial direction of the stator assembly in a penetrating way;

the rotor assembly penetrates through the mounting hole and can rotate relative to the stator assembly, and a bearing mounting space is formed by the space between the outer peripheral wall of the rotor assembly and the inner peripheral wall of the mounting hole;

the sliding bearing comprises a bearing body, and bearing end covers and bearing side plates which are respectively positioned at two axial ends of the bearing body, wherein the bearing body is arranged in the bearing installation space and is fixed relative to the stator assembly, the bearing end covers and the bearing side plates are both fixed on a bearing outer ring of the bearing body, and the rotor assembly is limited between the bearing end covers and the bearing side plates; the axial both ends of rotor subassembly all have the rotor shaft, the bearing end cover with the bearing curb plate overlaps respectively and locates two outside the rotor shaft.

As an alternative solution of the above motor assembly, a sheath is provided between the bearing inner ring of the sliding bearing and the outer peripheral wall of the rotor assembly.

As an alternative technical scheme of the motor assembly, the bearing outer ring and the bearing end cover are integrally formed.

As an alternative solution of the above motor assembly, the bearing outer ring and the bearing side plate are connected by a plurality of fasteners distributed at intervals in the circumferential direction.

As an optional technical scheme of the motor assembly, the bearing body comprises a bearing inner ring, a lubricating oil duct is arranged on the sliding bearing, one end of the lubricating oil duct extends to the inner peripheral wall of the bearing inner ring, and the other end of the lubricating oil duct extends to the side wall of the bearing end cover opposite to the bearing side plate.

As an optional technical scheme of the motor assembly, the motor further comprises a shell, and the stator assembly, the rotor assembly and the sliding bearing are all arranged in the shell.

As an alternative solution of the above motor assembly, the stator assembly is fixedly connected to the casing.

As an alternative solution of the above motor assembly, the sliding bearing is fixedly connected to the stator assembly, or the sliding bearing is fixedly connected to the casing.

As an alternative technical scheme of the motor assembly, two opposite side walls of the shell are respectively provided with a penetrating hole, and two rotor shafts respectively penetrate out of the two penetrating holes.

The utility model has the beneficial effects that: according to the motor assembly provided by the utility model, the bearing installation space is formed in the space between the outer peripheral wall of the rotor assembly and the inner peripheral wall of the installation hole, the bearing body of the sliding bearing is installed in the bearing installation space, meanwhile, the bearing end cover and the bearing side plate have the thrust function, the sliding bearing replaces the traditional radial sliding bearing and thrust sliding bearing, so that the number of parts of the motor assembly can be reduced, the axial length of the rotor shaft can be shortened, the effects of reducing the axial occupied space of the motor assembly and the weight of the motor assembly can be achieved, and the rotor shaft can reach higher rotating speed when the motor assembly works.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the drawings needed in the description of the embodiments of the present utility model, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the contents of the embodiments of the present utility model and these drawings without inventive effort for those skilled in the art.

FIG. 1 is a side view of a motor assembly provided in an embodiment of the present utility model;

fig. 2 is a cross-sectional view taken along A-A of fig. 1.

In the figure:

1. a sliding bearing; 11. a bearing body; 12. a bearing end cap; 13. bearing side plates;

2. a stator assembly;

3. a rotor assembly; 31. a rotor shaft;

4. a housing; 41. a half shell.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

As shown in fig. 1 and 2, the present embodiment provides a motor assembly, which includes a stator assembly 2, a rotor assembly 3 and a sliding bearing 1, wherein, a mounting hole is provided on the stator assembly 2 and is arranged along the axial direction of the stator assembly in a penetrating way, the rotor assembly 3 is arranged in the mounting hole in a penetrating way, the rotor assembly 3 can rotate relative to the stator assembly 2, and a bearing mounting space is formed by a space between the outer peripheral wall of the rotor assembly 3 and the inner peripheral wall of the mounting hole; the sliding bearing 1 comprises a bearing body 11, and a bearing end cover 12 and a bearing side plate 13 which are respectively positioned at two axial ends of the bearing body 11, wherein the bearing body 11 is arranged in a bearing installation space and is fixed relative to the stator assembly 2, the bearing end cover 12 and the bearing side plate 13 are both fixed on a bearing outer ring of the bearing body 11, and the rotor assembly is limited between the bearing end cover 12 and the bearing side plate 13; the rotor assembly 3 has rotor shafts 31 at both axial ends, and the bearing end caps 12 and the bearing side plates 13 are respectively sleeved outside the two rotor shafts 31.

The motor assembly provided in this embodiment forms the bearing installation space in the space between the outer peripheral wall of rotor subassembly 3 and the inner peripheral wall of mounting hole, installs slide bearing 1's bearing body 11 in the bearing installation space, and bearing end cover 12 and bearing curb plate 13 have the thrust effect concurrently simultaneously, replace traditional radial slide bearing 1 and thrust slide bearing 1 through above-mentioned slide bearing 1, not only can reduce motor assembly's spare part quantity, can also shorten rotor shaft 31's axial length to reach the effect that reduces motor assembly's axial occupation space and motor assembly weight, can make motor assembly during operation rotor shaft 31 reach higher rotational speed simultaneously.

In the present embodiment, the rotor core of the rotor assembly 3 is mounted as a shaft diameter to the bearing body 11 of the slide bearing 1. In other embodiments, a jacket may also be provided between the bearing inner ring of the plain bearing 1 and the outer circumferential wall of the rotor assembly 3. Specifically, the sheath is fixed to the outside of the rotor core of the rotor assembly 3, and the bearing body 11 of the slide bearing 1 is mounted with the sheath as a shaft diameter.

Alternatively, the bearing outer ring and the bearing end cover 12 are integrally formed, so that the structure of the sliding bearing 1 can be simplified, the processing efficiency can be improved, and the installation can be simplified.

Alternatively, the bearing outer ring and the bearing side plate 13 are connected by a plurality of fasteners distributed at intervals in the circumferential direction, and the connection mode is simple and low in cost. Illustratively, three fasteners are provided, the fasteners being bolts.

Optionally, the bearing body 11 includes a bearing inner ring, the sliding bearing 1 is provided with a lubrication oil duct, one end of the lubrication oil duct extends to an inner peripheral wall of the bearing inner ring, the other end of the lubrication oil duct extends to a side wall of the bearing end cover 12 back to the bearing side plate 13, and lubricating oil of the sliding bearing 1 is sent between an outer peripheral wall of the rotor assembly 3 and the inner peripheral wall of the bearing inner ring through the lubrication oil duct, so that the purpose of lubricating and cooling the rotor assembly 3 is achieved.

Optionally, the motor assembly further includes a casing 4, and the stator assembly 2, the rotor assembly 3 and the sliding bearing 1 are all disposed in the casing 4, so that the casing 4 is used to prevent the stator assembly 2, the rotor assembly 3 and the sliding bearing 1 from being exposed, and the stator assembly 2, the rotor assembly 3 and the sliding bearing 1 are protected.

Optionally, the sliding bearing 1 is fixedly connected to the stator assembly 2, and the stator assembly 2 is fixedly connected to the housing 4. In other embodiments, the sliding bearing 1 may also be fixedly connected to the housing 4.

Optionally, two opposite side walls of the casing 4 are respectively provided with a through hole, and the two rotor shafts 31 respectively penetrate from the two through holes, so that the rotor shafts 31 are connected with the executing component.

Optionally, the casing 4 includes two half shells 41, and the opening of two half shells 41 is relative and link to each other through a plurality of circumferentially spaced apart fastener, and the installation is swift, and it is convenient to dismantle, with low costs. Specifically, the open end of the half-shells 41 is provided with annular flanges, which are connected by a plurality of circumferentially spaced fasteners to connect the two half-shells 41.

Furthermore, the foregoing description of the preferred embodiments and the principles of the utility model is provided herein. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.

Claims

1. The motor assembly, its characterized in that includes:

the stator assembly (2) is provided with a mounting hole which is arranged along the axial direction of the stator assembly (2);

the rotor assembly (3) is arranged in the mounting hole in a penetrating mode, the rotor assembly (3) can rotate relative to the stator assembly (2), and a bearing mounting space is formed by the space between the outer peripheral wall of the rotor assembly (3) and the inner peripheral wall of the mounting hole;

the sliding bearing (1) comprises a bearing body (11), and bearing end covers (12) and bearing side plates (13) which are respectively positioned at two axial ends of the bearing body (11), wherein the bearing body (11) is arranged in the bearing installation space and is fixed relative to the stator assembly (2), the bearing end covers (12) and the bearing side plates (13) are both fixed on a bearing outer ring of the bearing body (11), and the rotor assembly (3) is limited between the bearing end covers (12) and the bearing side plates (13); the two axial ends of the rotor assembly (3) are respectively provided with a rotor shaft (31), and the bearing end covers (12) and the bearing side plates (13) are respectively sleeved outside the two rotor shafts (31).

2. A motor assembly according to claim 1, characterized in that a jacket is provided between the bearing inner ring of the sliding bearing (1) and the peripheral wall of the rotor component (3).

3. The electric machine assembly of claim 1, wherein the bearing outer race and the bearing end cap (12) are integrally formed.

4. A motor assembly according to claim 1, wherein the bearing outer race and the bearing side plates (13) are connected by a plurality of circumferentially spaced fasteners.

5. The motor assembly according to claim 1, wherein the bearing body (11) comprises a bearing inner ring, the sliding bearing (1) is provided with a lubrication oil duct, one end of the lubrication oil duct extends to the inner peripheral wall of the bearing inner ring, and the other end of the lubrication oil duct extends to the side wall of the bearing end cover (12) opposite to the bearing side plate (13).

6. The electric machine assembly according to claim 1, further comprising a housing (4), wherein the stator assembly (2), the rotor assembly (3) and the sliding bearing (1) are all provided within the housing (4).

7. The electric motor assembly according to claim 6, wherein the stator component (2) is fixedly connected to the housing (4).

8. The electric motor assembly according to claim 7, characterized in that the sliding bearing (1) is fixedly connected to the stator component (2) or the sliding bearing (1) is fixedly connected to the housing (4).

9. A motor assembly according to claim 6, wherein one through hole is provided in each of opposite side walls of the housing (4), and two of the rotor shafts (31) are respectively penetrated from the two through holes.