CN216086381U - High-performance squirrel-cage rotor and motor - Google Patents
High-performance squirrel-cage rotor and motor Download PDFInfo
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- CN216086381U CN216086381U CN202122483029.8U CN202122483029U CN216086381U CN 216086381 U CN216086381 U CN 216086381U CN 202122483029 U CN202122483029 U CN 202122483029U CN 216086381 U CN216086381 U CN 216086381U
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Abstract
The utility model discloses a high-performance squirrel-cage rotor and a motor, which comprise a rotor core, a rotor shaft and an end ring, wherein the rotor core and the end ring are sleeved on the rotor shaft, the end rings are arranged at the two ends of the rotor core, a plurality of balance grooves are arranged on the outer end surface of the end ring, the balance grooves are conical grooves with large outer parts and small inner parts, balance columns in interference connection with the balance grooves are arranged in the balance grooves, the balance columns are conical copper columns, flaky fan blades arranged at intervals with the balance grooves are further arranged on the outer end surface of the end ring, and the fan blades are spirally arranged along the outer circumference of the end ring. The high-performance squirrel-cage rotor and the motor disclosed by the utility model have the advantages of simple structure, convenience in installation, low material cost, convenience in installation of a balancing piece, good heat dissipation effect, low vibration and noise and capability of improving the performance of the motor, and the material does not occupy axial space when used for dynamic balance.
Description
Technical Field
The utility model belongs to the technical field of motors, and particularly relates to a high-performance squirrel-cage rotor and a motor.
Background
The rotor winding of a squirrel-cage motor is so named because of its shape like a squirrel cage, and is commonly used with the advantages of simple manufacture and easy maintenance. When the motor rotates at a high speed, because the motor rotor is made of uneven materials and has errors in processing and assembly, even the motor rotor has various factors such as asymmetric geometric shapes during design, centrifugal inertia forces generated on the motor rotor can not be counteracted mutually when the motor rotor rotates, unbalance of the rotor in the rotating process due to rotating stress is increased, vibration is caused, noise is generated, bearing abrasion is accelerated, the use of the motor is influenced, and destructive accidents can be caused when the motor is serious.
In the prior art, some motor end rings are not provided with a dynamic balance structure, some end rings are provided with a plurality of raised columns, the corresponding motor unbalance amount of the motor end ring is large, so that the motor vibration and noise cannot be improved in a balanced mode, the end rings can be used for dynamic balance, but when the dynamic balance amount is large, the axial size needs to be increased, the size of the motor needs to be increased, or a plurality of problems such as interference with an end cover and the like occur, and the fan blades are not favorable for being arranged, so that the heat dissipation effect is influenced.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: in order to overcome the defects, the utility model aims to provide the high-performance squirrel-cage rotor and the motor, which have the advantages of simple structure, convenience in installation, low material cost, no axial space occupation when the high-performance squirrel-cage rotor is used for dynamic balance, convenience in installation of a balance piece, good heat dissipation effect, low vibration and noise and capability of improving the performance of the motor.
The technical scheme is as follows: a high-performance squirrel-cage rotor and a motor comprise a rotor core, a rotor shaft and end rings, wherein the rotor core and the end rings are sleeved on the rotor shaft, the end rings are arranged at the two ends of the rotor core, a plurality of balance grooves are formed in the outer end face of each end ring, each balance groove is a conical groove with a large outer part and a small inner part, a balance column in interference connection with the balance groove is arranged in each balance groove, each balance column is a conical copper column, the conicity is 1:16, the copper columns are convenient to process, sheet-shaped fan blades arranged at intervals with the balance grooves are further arranged on the outer end face of each end ring, and the fan blades are spirally arranged along the outer circumference of each end ring. Under the condition of meeting the requirement of dynamic balance, the balance groove is inwards sunken for placing and fixing the balance column, so that the occupation of axial space can be reduced, and the balance column and the balance groove are in tapered interference connection, so that the balance column is convenient and firm to install and embed, the balance column is prevented from falling off in the rotating process, and vibration and noise are reduced; and the fan blades arranged spirally improve the heat dissipation effect, reduce the temperature rise of the motor, further reduce vibration and noise and greatly improve the performance of the motor.
Furthermore, in the high-performance squirrel-cage rotor, the rotor core is formed by laminating a plurality of rotor punching sheets, the rotor punching sheets are silicon steel sheets, and the silicon steel sheets have the characteristics of high magnetic permeability, low coercive force, large resistance coefficient and the like, so that the hysteresis loss and the eddy current loss are small; the rotor core is provided with a rotor slot and heat dissipation holes, the rotor slot and the heat dissipation holes penetrate through the rotor core, the heat dissipation holes are combined with the fan blades, the heat dissipation effect is further improved, and guide bars are arranged in the rotor slot.
Furthermore, the end rings and the conducting bars of the high-performance squirrel-cage rotor are integrally formed by high-pressure injection of aluminum water, so that the high-performance squirrel-cage rotor is convenient to assemble and saves the production cost.
Further, in the high-performance squirrel-cage rotor, the number of the balance grooves is even, and can be 8, 10, 12 and the like, and the balance grooves can be reasonably arranged according to the dynamic balance precision; a plurality of balanced recess is along rotor core central axis circumference evenly distributed, is convenient for arrange the equilibrium post, and 1 or a plurality of can be arranged to the equilibrium post, and the number of equilibrium post and arrange the position etc. can be according to actual balance requirement and adaptability change.
Further, in the high-performance squirrel-cage rotor, the inner side of the end ring is provided with a tapered hole with a large outer part and a small inner part, and the aperture of the minimum position of the tapered hole is larger than 0.5 time of the outer diameter of the rotor core. Under the condition of meeting the important requirement of dynamic balance, the material consumption is reduced, and the material cost is reduced.
Furthermore, according to the high-performance squirrel-cage rotor, the end face of the outer side of the fan blade is a downward inclined face which is inclined radially inwards, the characteristics of the fan blade with a high outer part and a low inner part are in accordance with the flowing characteristic of air flow, the radial flow of air is promoted, the heat dissipation effect of the fan blade is greatly improved, the temperature rise of the motor is reduced, the air flow is smoother, the impact is small, and the noise and the vibration are smaller.
Furthermore, the surface of the high-performance squirrel-cage rotor is provided with an anti-rust layer, and the high-performance squirrel-cage rotor can be coated with anti-rust oil and paint for rust prevention, so that the surface of a rotor iron core can be prevented from being rusted.
The technical scheme shows that the utility model has the following beneficial effects: according to the high-performance squirrel-cage rotor and the motor, under the condition that the requirement of dynamic balance is met, the balance groove is inwards sunken for placing and fixing the balance column, the occupation of axial space can be reduced, the balance column and the balance groove are connected in a tapered interference manner, the mounting and embedding are convenient and firm, the balance column is prevented from falling off in the rotating process, and the vibration noise is reduced; and the fan blades arranged spirally improve the heat dissipation effect, reduce the temperature rise of the motor, further reduce the vibration noise and greatly improve the performance of the motor.
The motor comprises a high-performance squirrel-cage rotor, wherein the rotor is the rotor in any one of the above schemes, the rotor has the technical effects, and the motor comprising the rotor also has the same technical effects.
Drawings
FIG. 1 is a schematic front view of a high performance squirrel cage rotor according to the present invention;
FIG. 2 is a schematic view of a half-section of the high performance squirrel cage rotor of the present invention shown in FIG. 1;
FIG. 3 is a schematic diagram of a side view connection structure of a fan blade and an end ring of a high-performance squirrel-cage rotor according to the present invention;
in the figure: the rotor comprises a rotor 10, a rotor core 1, heat dissipation holes 11, a rotor shaft 2, an end ring 3, tapered holes 31, balance grooves 4, balance columns 5 and fan blades 6.
Detailed Description
The utility model is further elucidated with reference to the drawings and the embodiments.
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 and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", 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 being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered 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 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 invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; 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 by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Example 1
As shown in fig. 1-3, the high-performance squirrel-cage rotor and motor of the present invention include a rotor core 1, a rotor shaft 2 and an end ring 3, the rotor core 1 and the end ring 3 are both sleeved on the rotor shaft 2, the end rings 3 are disposed at two end portions of the rotor core 1, a plurality of balance grooves 4 are disposed on an outer end surface of the end ring 3, the balance grooves 4 are tapered grooves with large outer portions and small inner portions, balance columns 5 connected with the balance grooves 4 in an interference manner are disposed in the balance grooves 4, unbalance of the rotor is balanced, the balance columns 5 are tapered copper columns with a taper of 1:16, flaky fan blades 6 disposed at intervals with the balance grooves 4 are further disposed on an outer end surface of the end ring 3, and the fan blades 6 are spirally disposed along an outer circumference of the end ring 3. Under the condition of meeting the requirement of dynamic balance, the balance groove 4 is inwards sunken for placing and fixing the balance column 5, so that the occupation of axial space can be reduced, the balance column 5 and the balance groove 4 are connected in a tapered interference manner, the installation and the embedding are convenient and firm, the balance column 5 is prevented from falling off in the rotating process, and the vibration and the noise are reduced; and the fan blades 6 which are arranged spirally improve the heat dissipation effect, reduce the temperature rise of the motor, further reduce the vibration and the noise and greatly improve the performance of the motor.
Example 2
As shown in fig. 1-3, the high-performance squirrel-cage rotor and motor of the present invention include a rotor core 1, a rotor shaft 2 and an end ring 3, the rotor core 1 and the end ring 3 are both sleeved on the rotor shaft 2, the end rings 3 are disposed at two end portions of the rotor core 1, a plurality of balance grooves 4 are disposed on an outer end surface of the end ring 3, the balance grooves 4 are tapered grooves with large outer portions and small inner portions, balance columns 5 connected with the balance grooves 4 in an interference manner are disposed in the balance grooves 4, unbalance of the rotor is balanced, the balance columns 5 are tapered copper columns with a taper of 1:16, flaky fan blades 6 disposed at intervals with the balance grooves 4 are further disposed on an outer end surface of the end ring 3, and the fan blades 6 are spirally disposed along an outer circumference of the end ring 3. Under the condition of meeting the requirement of dynamic balance, the balance groove 4 is inwards sunken for placing and fixing the balance column 5, so that the occupation of axial space can be reduced, the balance column 5 and the balance groove 4 are connected in a tapered interference manner, the installation and the embedding are convenient and firm, the balance column 5 is prevented from falling off in the rotating process, and the vibration and the noise are reduced; and the fan blades 6 which are arranged spirally improve the heat dissipation effect, reduce the temperature rise of the motor, further reduce the vibration and the noise and greatly improve the performance of the motor.
The rotor core 1 is formed by laminating a plurality of rotor punching sheets, and the rotor punching sheets are silicon steel sheets; the rotor core 1 is provided with a rotor slot (not shown in the figure) and heat dissipation holes 11, the rotor slot penetrates through the rotor core 1, the heat dissipation holes 11 are combined with the fan blades 6, the heat dissipation effect is further improved, and guide bars (not shown in the figure) are arranged in the rotor slot.
The end ring 3 and the guide bar are integrally formed by high-pressure injection of aluminum water, so that the assembly is convenient and the production cost is saved.
The number of the balance grooves 4 is even, can be 8, 10, 12 and the like, and can be reasonably arranged according to the dynamic balance precision; a plurality of balanced recess 4 is along 1 the central axis circumference evenly distributed of rotor core, is convenient for arrange balancing post 5, and balancing post 5 can arrange 1 or a plurality ofly, and the number of balancing post and arrange the position etc. and can the adaptability change according to actual balance requirement.
As shown in fig. 2, a tapered hole 31 having a large outside and a small inside is provided inside the end ring 3, and the diameter of the smallest part of the tapered hole 31 is greater than 0.5 times the outer diameter of the rotor core 1. Under the condition of meeting the important requirement of dynamic balance, the material consumption is reduced, and the material cost is reduced.
As shown in fig. 1 and 3, the end surface of the outer side of the fan blade 6 is a downward inclined surface which is inclined radially inward, and the cross section of the bottom of the fan blade 6 is larger than that of the top.
And an anti-rust layer is arranged on the surface of the rotor 10, so that the surface of the rotor iron core 1 can be prevented from being rusted.
The utility model also discloses a motor, which comprises the high-performance squirrel-cage rotor 10, wherein the rotor 10 is the rotor in any scheme, can meet the dynamic balance processing requirement, and is convenient to install, excellent in performance and low in material cost.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should also be construed as the protection scope of the present invention.
Claims (8)
1. A high performance squirrel cage rotor characterized by: the rotor core (1) and the end rings (3) are sleeved on the rotor shaft (2), the end rings (3) are arranged at the end parts of the two ends of the rotor core (1), a plurality of balance grooves (4) are arranged on the outer end face of each end ring (3), each balance groove (4) is a tapered groove with a large outer part and a small inner part, a balance column (5) in interference connection with the balance groove (4) is arranged in each balance groove (4), each balance column (5) is a tapered copper column with a taper of 1:16, sheet-shaped fan blades (6) which are arranged at intervals with the balance grooves (4) are further arranged on the outer end face of each end ring (3), and the fan blades (6) are spirally arranged along the outer circumference of each end ring (3).
2. The high performance squirrel cage rotor of claim 1, wherein: the rotor core (1) is formed by laminating a plurality of rotor punching sheets, the rotor punching sheets are silicon steel sheets, a rotor groove and heat dissipation holes (11) penetrating through the rotor core (1) are formed in the rotor core (1), and guide strips are arranged in the rotor groove.
3. The high performance squirrel cage rotor of claim 2, wherein: the end ring (3) and the guide bar are integrally formed by injecting molten aluminum under high pressure.
4. The high performance squirrel cage rotor of claim 1, wherein: the number of the balance grooves (4) is even, and the balance grooves (4) are uniformly distributed along the circumference of the central axis of the rotor core (1).
5. The high performance squirrel cage rotor of claim 1, wherein: the inner side of the end ring (3) is provided with a tapered hole (31) with a large outer part and a small inner part, and the aperture of the minimum position of the tapered hole (31) is larger than 0.5 time of the outer diameter of the rotor core (1).
6. The high performance squirrel cage rotor of claim 1, wherein: the end face of the outer side of the fan blade (6) is a downward inclined face which is inclined radially inwards.
7. The high performance squirrel cage rotor of claim 1, wherein: and an anti-rust layer is arranged on the surface of the rotor (10).
8. An electric machine characterized by: comprising a high performance squirrel cage rotor (10) as claimed in any of the claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122483029.8U CN216086381U (en) | 2021-10-15 | 2021-10-15 | High-performance squirrel-cage rotor and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122483029.8U CN216086381U (en) | 2021-10-15 | 2021-10-15 | High-performance squirrel-cage rotor and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216086381U true CN216086381U (en) | 2022-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122483029.8U Active CN216086381U (en) | 2021-10-15 | 2021-10-15 | High-performance squirrel-cage rotor and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216086381U (en) |
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2021
- 2021-10-15 CN CN202122483029.8U patent/CN216086381U/en active Active
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