CN217545783U - Motor rotor end ring - Google Patents

Abstract

The utility model discloses an electric motor rotor end links, including being cylindric rotor core, all be equipped with rotor end links on rotor core's the both ends cross section, rotor end links pass through the cross section that rotor core is connected to a plurality of fixed parts of evenly distributed in circumference, and the fixed part orientation is kept away from the direction in the rotor end links centre of a circle and is extended, and the circumference of rotor end links still align to grid along has connecting portion, the utility model relates to an electric motor rotor end links assembles rotor end links at rotor core cross section both ends, can help the fixed magnet of rotor core, increases rotor weight simultaneously, reaches dynamic balance's effect, simple structure, low in manufacturing cost, convenient assembling.

Description

End ring of motor rotor

Technical Field

The utility model belongs to the technical field of the motor, especially, relate to an electric motor rotor end links.

Background

An electric motor typically comprises a rotor mounted on an inner shaft of a stator, the rotor functioning to generate a magnetic field. The rotor is divided into an iron core and an end ring. Since the rotor rotates during normal operation and the rotor is subjected to high loads during high speed rotation, it is necessary to ensure that the rotor is relatively balanced before the motor can be used. For example, at 20000 revolutions the end ring can be loaded to 13 kn, and during high speed rotation a pressure of up to 200 mpa can be allowed to withstand centrifugal excursions.

Assembly can affect the balance of the rotor, and as a result of the severe rotation, the end rings are not concentric with the rotor shaft, resulting in the rotor becoming unbalanced and experiencing significant shudder. There is therefore a need for a solution to the above problems.

The above description is included in the technical knowledge of the inventors, and does not necessarily constitute a prior art.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the present invention provides a rotor end ring of an electric machine, which has a simple structure and can fix magnets and increase the weight of a rotor core,

in order to achieve the above object, the utility model provides an electric machine rotor end links, a serial communication port, including being cylindric rotor core, all be equipped with the rotor end links on rotor core's the both ends cross section, the rotor end links are connected through a plurality of fixed parts of evenly distributed in circumference rotor core's cross section, the fixed part orientation is kept away from the direction in rotor end links centre of a circle extends, follows the circumference of rotor end links is evenly arranged still has connecting portion.

In one example, the centers of the rotor end ring and the rotor core are located on the same vertical line, and when the rotor core rotates, the concentric rotor end ring rotates together, so that the fixing and weighting effects are achieved.

In one example, the fixing part is distributed on the rotor end ring in a pentagonal shape, so that the gravity of the rotor end ring is balanced, and the dynamic balance of the motor is simpler.

In one example, the connection portion is disposed vertically with respect to a horizontal plane.

In one example, the fixing portion and the connecting portion are respectively provided with a positioning hole through which a fixing bolt is inserted, and the fixing connection of the rotor end ring with the rotor core and other components is achieved through the fixing bolt.

In one example, the diameter of the rotor end ring is slightly smaller than the diameter of the rotor core.

Through the utility model provides an electric motor rotor end links can bring following beneficial effect:

1. the rotor end rings are assembled at the two ends of the cross section of the rotor core, so that the rotor core can be helped to fix the magnets, the weight of the rotor is increased, and the dynamic balance effect is achieved;

2. simple structure, low manufacturing cost and convenient assembly.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:

fig. 1 is a schematic structural diagram of an end ring of a motor rotor according to the present invention.

Fig. 2 is a front view of an end ring of a rotor of an electric machine according to the present invention.

Fig. 3 is a side view of a rotor end ring of an electric machine according to the present invention.

Fig. 4 is a schematic structural view of the present invention assembled on a rotor core.

Fig. 5 is a front view of the present invention assembled on a rotor core.

Fig. 6 is a side view of the present invention assembled on a rotor core.

Detailed Description

In order to more clearly explain the overall concept of the present invention, the following detailed description is given by way of example in conjunction with the accompanying drawings.

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

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 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 specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. In the description of the present specification, reference to the description of "one aspect", "some aspects", "an example", "a specific example", or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the aspect or example is included in at least one aspect or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same aspect or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more aspects or examples.

As shown in fig. 1-6, the embodiment of the utility model provides a motor rotor end ring, it is including being cylindric rotor core 1, all be equipped with rotor end ring 2 on rotor core 1's the both ends cross section, rotor end ring 2 connects rotor core 1's cross section through a plurality of fixed parts 21 of upwards evenly distributed circumferentially, fixed part 21 extends towards the direction of keeping away from the 2 centre of a circle of rotor end ring, it has connecting portion 22 to go back align to grid along rotor end ring 2's circumference, rotor end ring 2 is located same perpendicular line with rotor core 1's centre of a circle, when rotor core 1 is rotatory, concentric rotor end ring 2 is together rotatory, reach fixed and aggravated effect, fixed part 21 is pentagon distribution on rotor end ring 2, make rotor end ring 2 self gravity reach the equilibrium, make the dynamic balance of motor simpler, connecting portion 22 is the perpendicular setting to the level relatively, all set up the locating hole 24 who has worn to establish fixing bolt 23 on fixed part 21 and the connecting portion 22, reach the fixed connection of rotor end ring 2 and rotor core 1 and other parts through fixing bolt 23, the diameter of rotor end ring 2 slightly is less than rotor core 1.

The working principle is as follows: the fixed part of rotor end ring is assembled through fixing bolt at rotor core cross section both ends, and the rotor end ring still wears to establish connecting portion through fixing bolt and connects all the other parts simultaneously, reaches the fixed connection of rotor end ring and other parts, and the assembly of rotor end ring can not only increase rotor core's weight, can also help the fixed magnet of rotor core for the centrifugal force that produces when the help resists high-speed rotation makes rotor core's dynamic balance process become simple.

All the embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (6)

1. The utility model provides a motor rotor end ring, its characterized in that, is including being cylindric rotor core, all be equipped with the rotor end ring on the both ends cross section of rotor core, the rotor end ring passes through a plurality of fixed parts of evenly distributed in the circumference and connects the cross section of rotor core, the fixed part orientation is kept away from the direction of rotor end ring centre of a circle extends, and it has connecting portion to follow the circumference of rotor end ring is evenly arranged still.

2. The end ring of claim 1, wherein the center of the rotor end ring and the center of the rotor core are located on the same vertical line.

3. A rotor end ring for an electrical machine according to claim 1, wherein said fixing portions are disposed at a pentagonal pitch on said rotor end ring.

4. The motor rotor end ring of claim 1, wherein the connecting portion is disposed vertically with respect to the horizontal plane.

5. The end ring of a rotor of an electric machine according to claim 1, wherein the fixing portion and the connecting portion are each provided with a positioning hole through which a fixing bolt is inserted.

6. The electric machine rotor end ring of claim 1, wherein the diameter of the rotor end ring is slightly less than the diameter of the rotor core.

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