CN219304555U - Motor rotor, motor and air compressor - Google Patents
Motor rotor, motor and air compressor Download PDFInfo
- Publication number
- CN219304555U CN219304555U CN202320066938.8U CN202320066938U CN219304555U CN 219304555 U CN219304555 U CN 219304555U CN 202320066938 U CN202320066938 U CN 202320066938U CN 219304555 U CN219304555 U CN 219304555U
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- motor
- rotor
- rotor shaft
- baffle
- shaft
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model relates to a motor rotor, a motor and an air compressor, belongs to the technical field of motors, and solves the technical problems that the natural frequency of the motor rotor formed by welding an existing iron core baffle and a rotor shaft is low, and the motor rotor is not easy to reach a dynamic balance state during operation, so that the motor vibrates and has high noise during operation. The motor rotor includes a rotor shaft; the iron core comprises two baffles and a plurality of silicon steel sheets stacked together, and the silicon steel sheets are clamped between the two baffles; the iron core is sleeved on the rotor shaft, the rotor shaft is provided with a shaft shoulder, one baffle is propped against the shaft shoulder, and the other baffle is bolted with the rotor shaft through bolts. The motor rotor has higher natural frequency, simpler structure and easier dynamic balance. The motor adopts the motor rotor, the motor has simpler structure, lower cost, easier dynamic balance during operation and smaller noise and vibration. The air compressor adopts the motor, and the noise and vibration of the air compressor during operation are smaller.
Description
Technical Field
The utility model belongs to the technical field of motors, and particularly relates to a motor rotor, a motor and an air compressor.
Background
The motor is one of core parts of the air compressor, plays a vital role in the overall performance, and directly influences the specific power, noise vibration and other performances of the air compressor. The motor rotor is an important component of the motor.
The motor rotor in the prior art comprises a rotor shaft and an iron core, wherein the main body of the iron core is a plurality of silicon steel sheets stacked together, the silicon steel sheets are clamped by two baffle plates, and the two baffle plates are locked by long screw rods. The rotor shaft is provided with a shaft shoulder, the iron core is sleeved on the rotor shaft, one baffle is propped against the shaft shoulder, and then the other baffle is welded and fixed with the rotor shaft, so that the iron core and the rotor shaft are firmly connected together to form the motor rotor.
However, the natural frequency of the motor rotor formed by welding the iron core baffle and the rotor shaft is low, and the motor rotor is not easy to reach a dynamic balance state during operation, so that the motor is high in vibration and noise during operation.
Disclosure of Invention
The utility model provides a motor rotor, a motor and an air compressor, which are used for solving the technical problems that the natural frequency of the motor rotor formed by welding an existing iron core baffle and a rotor shaft is low, and the motor rotor is difficult to reach a dynamic balance state during operation, so that the motor is high in vibration and noise during operation.
The utility model is realized by the following technical scheme: an electric motor rotor comprising:
a rotor shaft;
the iron core comprises two baffles and a plurality of silicon steel sheets stacked together, and the silicon steel sheets are clamped between the two baffles;
the iron core is sleeved on the rotor shaft, the rotor shaft is provided with a shaft shoulder, one baffle is propped against the shaft shoulder, and the other baffle is bolted with the rotor shaft through a bolt.
Further, in order to better realize the utility model, a threaded hole is formed in one end face of the rotor shaft, a through hole is formed in the other baffle plate, and the bolt passes through the through hole and is then screwed into the threaded hole.
Further, in order to better realize the utility model, the number of the threaded holes is a plurality of, and the plurality of the threaded holes are distributed on one end face of the rotor shaft in a circumferential array with the central axis of the rotor shaft as the center;
the number of the through holes and the bolts is multiple, and the threaded holes, the through holes and the bolts are in one-to-one correspondence.
Further, in order to better realize the utility model, another baffle plate is provided with a through hole, and the through hole is positioned among a plurality of threaded holes.
Further, in order to better realize the present utility model, the through hole is a circular hole, and the through hole is coaxial with the rotor shaft.
Further, in order to better realize the utility model, the other baffle is provided with a groove, and one end part of the rotor shaft is inserted into the groove.
Further, in order to better realize the utility model, a convex ring is convexly arranged on one end face of the rotor shaft, and the convex ring is inserted into the through hole.
Further, in order to better implement the present utility model, both of the baffles are flat plates.
The utility model also provides a motor, which comprises the motor rotor.
The utility model also provides an air compressor, which comprises the motor.
Compared with the prior art, the utility model has the following beneficial effects:
(1) The motor rotor comprises a rotor shaft, an iron core and bolts, wherein the iron core comprises two baffles and a plurality of silicon steel sheets stacked together, the silicon steel sheets are erected between the two baffles, the iron core is sleeved on the rotor shaft, the rotor shaft is provided with shaft shoulders, one baffle is abutted to the shaft shoulders, and the other baffle is bolted to the rotor shaft through the bolts.
Through the structure, the iron core is firmly connected to the rotor shaft by the bolts, so that the rotor shaft and the iron core are synchronously linked to form the motor rotor, the structure is simple, the connection is stable, the natural frequency of the motor rotor is effectively improved, one baffle is abutted to the shaft shoulder of the rotor shaft, the other baffle is connected to the rotor shaft by the bolts, the silicon steel sheet is tightly pressed on the baffle abutted to the shaft shoulder of the rotor shaft by the other baffle, and therefore the motor rotor in the prior art is replaced by using a long screw to lock the two baffles so that the two baffles clamp the motor rotor of the silicon steel sheet.
(2) The motor provided by the utility model adopts the motor rotor, so that the motor is simpler in structure and lower in cost, dynamic balance is easier to achieve during operation, and noise and vibration are smaller.
(3) The air compressor provided by the utility model adopts the motor, so that the noise and vibration are smaller when the air compressor operates.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a motor (a baffle plate is provided with a groove) according to an embodiment of the present utility model;
fig. 2 is a schematic structural view of an electric motor (a rotor shaft is provided with a convex ring) according to an embodiment of the present utility model.
In the figure:
1-a rotor shaft; 11-shaft shoulders;
2-iron core; 21-a baffle; 22-silicon steel sheets; 23-through holes; 24-groove; 25-convex rings;
3-bolts;
4-stator;
5-a shell.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, based on the examples herein, which are within the scope of the utility model as defined by the claims, will be within the scope of the utility model as defined by the claims.
Example 1:
the motor rotor provided in this embodiment includes a rotor shaft 1, an iron core 2 and a bolt 3, where the iron core 2 includes two baffles 21 and a plurality of stacked silicon steel sheets 22, a shaft shoulder 11 is provided on the rotor shaft 1, one baffle 21 is sleeved on the rotor shaft 1 and abuts against the shaft shoulder 11, the plurality of stacked silicon steel sheets 22 are sleeved on the rotor shaft 1, the other baffle 21 is bolted on the rotor shaft 1 through the bolt 3, and the other baffle 21 compresses the plurality of stacked silicon steel sheets 22 against the baffle 21 abutting against the shaft shoulder 11.
Both baffles 21 in this embodiment are flat plates.
Through the structure, the iron core 2 is firmly connected to the rotor shaft 1 by the bolts 3, so that the rotor shaft 1 and the iron core 2 are synchronously linked to form the motor rotor, the structure is simple, the connection is stable, the natural frequency of the motor rotor is effectively improved, one baffle 21 is abutted to the shaft shoulder 11 of the rotor shaft 1, the other baffle 21 is connected to the rotor shaft 1 by the bolts 3, the silicon steel sheet 22 is pressed on the baffle 21 abutted to the shaft shoulder 11 of the rotor shaft 1 by the other baffle 21, and therefore, the motor rotor provided by the utility model replaces the motor rotor in the prior art that two baffles are locked by using a long screw rod to clamp the silicon steel sheet by using the two baffles, namely, the motor rotor provided by the utility model does not need to use the long screw rod to lock the two baffles 21.
Optionally, in this embodiment, a threaded hole is formed in an end face of one end of the rotor shaft 1, a through hole is formed in the other baffle 21, the through hole is opposite to the threaded hole, and the bolt 3 passes through the through hole and is screwed with the threaded hole. The bolts 3 in this embodiment are hexagon socket head cap bolts.
Optionally, the number of the threaded holes is multiple, and the multiple threaded holes are distributed on one end face of the rotor shaft 1 in a circumferential array with the central axis of the rotor shaft 1 as the center. The number of the through holes and the bolts 3 is multiple, and the threaded holes, the through holes and the bolts 3 are in one-to-one correspondence. In this way, the bolts 3 can more firmly connect the other baffle 21 to the rotor shaft 1, so that the iron core 2 and the rotor shaft 1 are more firmly connected together, and the evenly distributed bolts 3 can more easily achieve dynamic balance of the motor rotor.
The other baffle 21 is provided with a through hole 23, and the through hole 23 is located between a plurality of screw holes so that the motor rotor is connected with an external shaft. Specifically, the external shaft passes through the through hole 23 and then is connected to the rotor shaft 1.
Alternatively, the through hole 23 in the present embodiment is a circular hole coaxial with the rotor shaft 1 described above.
An alternative implementation of this embodiment is as follows: as shown in fig. 1, a groove 24 is formed in a plate surface of the other baffle 21, which is connected to the rotor shaft 1, and one end portion of the rotor shaft 1 is inserted into the groove 24. In this way, the rotor shaft 1 and the other baffle plate 21 are more firmly connected together, and the groove 24 positions the rotor shaft 1 during assembly, so that the assembly is convenient.
Another alternative implementation of this embodiment is as follows: as shown in fig. 2, a convex ring 25 is protruded from an end surface of the rotor shaft 1, which is in contact with the other baffle plate 21, the through hole 23 is a stepped hole, and the convex ring 25 is inserted into the through hole 23. Therefore, the rotor shaft 1 and the other baffle plate 21 are more firmly connected together, and during assembly, the insertion connection between the convex ring 25 and the through hole 23 can position the assembly of the other baffle plate 21 on the rotor shaft 1, so that the assembly is convenient.
Example 2:
the present embodiment provides a motor, as shown in fig. 1 and 2, which employs the above-described motor rotor, and which further includes a stator 4 and a housing 5, the stator 4 being fixedly mounted in the housing 5, the above-described motor rotor being rotatably mounted inside the stator 4.
Therefore, the motor has simpler structure and lower cost, and is easier to achieve dynamic balance during operation, and has less noise and vibration.
Example 3:
the embodiment provides an air compressor, and the air compressor adopts the motor, so that noise and vibration are smaller when the air compressor operates.
The above description is merely an embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present utility model, and it is intended to cover the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (10)
1. An electric motor rotor, comprising:
a rotor shaft;
the iron core comprises two baffles and a plurality of silicon steel sheets stacked together, and the silicon steel sheets are clamped between the two baffles;
the iron core is sleeved on the rotor shaft, the rotor shaft is provided with a shaft shoulder, one baffle is propped against the shaft shoulder, and the other baffle is bolted with the rotor shaft through a bolt.
2. A motor rotor as set forth in claim 1, wherein:
the end face of one end of the rotor shaft is provided with a threaded hole, the other baffle is provided with a through hole, and the bolt passes through the through hole and is then screwed into the threaded hole.
3. A motor rotor as set forth in claim 2, wherein:
the number of the threaded holes is multiple, and the threaded holes are distributed on one end face of the rotor shaft in a circumferential array with the central axis of the rotor shaft as the center;
the number of the through holes and the bolts is multiple, and the threaded holes, the through holes and the bolts are in one-to-one correspondence.
4. A motor rotor according to claim 3, characterized in that:
the other baffle plate is provided with a through hole, and the through hole is positioned among a plurality of threaded holes.
5. A motor rotor as set forth in claim 4, wherein:
the through hole is a circular hole, and the through hole is coaxial with the rotor shaft.
6. A motor rotor as set forth in claim 5, wherein:
the other baffle is provided with a groove, and one end part of the rotor shaft is inserted into the groove.
7. A motor rotor as set forth in claim 5, wherein:
the end face of one end of the rotor shaft is convexly provided with a convex ring, and the convex ring is inserted into the through hole.
8. A motor rotor according to any one of claims 1-7, characterized in that:
both baffles are flat plates.
9. An electric motor, characterized by: comprising the motor rotor of any one of claims 1-8.
10. An air compressor, characterized in that: comprising the motor of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320066938.8U CN219304555U (en) | 2023-01-06 | 2023-01-06 | Motor rotor, motor and air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320066938.8U CN219304555U (en) | 2023-01-06 | 2023-01-06 | Motor rotor, motor and air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219304555U true CN219304555U (en) | 2023-07-04 |
Family
ID=86957554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320066938.8U Active CN219304555U (en) | 2023-01-06 | 2023-01-06 | Motor rotor, motor and air compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219304555U (en) |
-
2023
- 2023-01-06 CN CN202320066938.8U patent/CN219304555U/en active Active
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