CN215911957U - Excitation controllable motor rotor structure - Google Patents
Excitation controllable motor rotor structure Download PDFInfo
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- CN215911957U CN215911957U CN202122466184.9U CN202122466184U CN215911957U CN 215911957 U CN215911957 U CN 215911957U CN 202122466184 U CN202122466184 U CN 202122466184U CN 215911957 U CN215911957 U CN 215911957U
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Abstract
The utility model discloses an excitation controllable motor rotor structure, which comprises a rotor inner cylinder, wherein a plurality of magnetic conduction grooves are distributed on the outer side surface of the rotor inner cylinder; an N-pole magnetic conducting strip and an S-pole magnetic conducting strip are arranged in the magnetic conducting groove; one end of the rotor inner cylinder is provided with an excitation disc, the excitation disc comprises an excitation outer ring, an excitation inner ring and an excitation coil, the excitation outer ring can form an N-pole magnetic ring or an S-pole magnetic ring after the excitation coil is electrified, and correspondingly, the excitation inner ring can form an S-pole magnetic ring or an N-pole magnetic ring; the end part of the N pole magnetic strip extends to be close to the N pole magnetic ring or is attached to the N pole magnetic ring, and correspondingly, the end part of the S pole magnetic strip extends to be close to the S pole magnetic ring or is attached to the S pole magnetic ring. The utility model has the advantages of larger rotating speed control range, simple control, high accuracy, good stability, high transmission efficiency, long maintenance period and lower use cost.
Description
Technical Field
The utility model relates to the technical field of motors, in particular to a controllable excitation motor rotor structure.
Background
The motor is a device that converts electric energy into mechanical energy, and thus drives the device. With the progress of science and technology, motors are widely used in various technical fields. The traditional motor mainly comprises a stator and a rotor, wherein the stator comprises a stator shell and a stator coil, and the rotor comprises a rotor inner cylinder and a rotor coil; this type of motor is a single control of the stator or rotor part, so that the motor has a significant short plate from start-up to high speed motion characteristics:
1. the traditional motor has limited magnetic field intensity, and the power density can not meet the requirements of the existing application market on the motor;
2. the traditional motor has consumable parts such as electric brushes and the like, so that the service life cycle and the maintenance cycle of the motor are shortened, and the use cost is high;
3. the traditional motor is complex to control, small in debugging range and low in control accuracy and stability;
4. the conventional motor is not efficient.
Therefore, a scheme which can effectively improve the rotating speed, has a larger control range, higher control accuracy and better stability is urgently needed to meet the requirements of different places.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide an excitation controllable motor rotor structure which can effectively solve the problems of small control range of the rotating speed, complex control, low accuracy, poor stability, low transmission efficiency, short maintenance period and high use cost of the existing motor.
In order to solve the technical problem, the technical scheme adopted by the utility model is as follows: the utility model provides a controllable formula electric motor rotor structure excites, includes the rotor inner tube, its characterized in that: a plurality of magnetic conduction grooves are distributed around the outer side surface of the rotor inner cylinder, the magnetic conduction grooves are arranged along the axial direction of the rotor inner cylinder, and two ends of the magnetic conduction grooves are close to or penetrate through two ends of the rotor inner cylinder; the magnetic conduction grooves are internally provided with magnetic conduction strips, wherein the magnetic conduction strips comprise N-pole magnetic conduction strips and S-pole magnetic conduction strips, and the N-pole magnetic conduction strips and the S-pole magnetic conduction strips are alternately distributed;
one end of the rotor inner cylinder is provided with an excitation disk, and the excitation disk comprises an excitation outer ring, an excitation inner ring and an excitation coil; the excitation outer ring and the excitation inner ring are arranged coaxially with the rotor inner cylinder and are connected through a plurality of connecting rods arranged along the radial direction; each connecting rod is respectively wound with an excitation coil, after the excitation coil is electrified, an excitation outer ring can form an N-pole magnetic ring or an S-pole magnetic ring, and correspondingly, an excitation inner ring can form an S-pole magnetic ring or an N-pole magnetic ring;
the end part of the N pole magnetic strip extends to be close to the N pole magnetic ring or is attached to the N pole magnetic ring, and correspondingly, the end part of the S pole magnetic strip extends to be close to the S pole magnetic ring or is attached to the S pole magnetic ring.
Furthermore, the other end of the rotor inner cylinder is also provided with an excitation disk, and the two excitation disks are arranged coaxially; the two ends of the rotor inner cylinder are respectively provided with the excitation disk, so that the magnetization effect of the magnetic strip can be effectively improved, and the magnetic field intensity of the magnetic strip is ensured.
Further, after the excitation disk at one end of the rotor inner cylinder is electrified, an N-pole magnetic ring is formed on the outer ring of the excitation disk, and an S-pole magnetic ring is formed on the inner ring of the excitation disk; after the excitation disk at the other end of the rotor inner cylinder is electrified, an S pole magnetic ring is formed on the outer ring of the excitation disk, and an N pole magnetic ring is formed on the inner ring of the excitation disk; this facilitates the power supply access to the excitation coil.
Furthermore, a magnetic conduction disc is arranged between the excitation disc and the rotor inner cylinder, the magnetic conduction disc comprises a magnetic conduction outer ring and a magnetic conduction inner ring which are arranged with the same axial lead, and the magnetic conduction outer ring and the magnetic conduction inner ring are respectively opposite to the excitation outer ring and the excitation inner ring; the magnetic conduction outer ring and the magnetic conduction inner ring are correspondingly in contact with or in clearance fit with the excitation outer ring or the excitation inner ring (namely, near-field magnetic conduction can be carried out), and the magnetic conduction outer ring and the magnetic conduction inner ring are correspondingly in clearance fit with, contact with or are connected with the N pole magnetic conduction strip and the S pole magnetic conduction strip (namely, near-field magnetic conduction can be carried out).
In the scheme, the magnetic conduction area of the magnetic conduction plate and the excitation plate is larger by arranging the magnetic conduction plate, so that the magnetic conduction effect is better; after the magnetic conduction rings are magnetized, the magnetic conduction strips are magnetized, and the magnetic conduction strips are closer to the magnetic conduction rings and the relative positions of the magnetic conduction strips and the magnetic conduction rings are unchanged, so that the magnetic conduction strips can be magnetized better, the magnetic field intensity of the magnetic conduction strips is greatly improved, and the magnetic field stability of the magnetic conduction strips is ensured.
Preferably, the N-pole magnetic conduction strip and the S-pole magnetic conduction strip are positioned on the same ring surface which takes the axial lead of the rotor inner cylinder as the central line and are positioned on the same ring surface with the magnetic conduction disc.
Preferably, the N-pole magnetic conduction strip and the S-pole magnetic conduction strip are distributed along the inner cylinder of the rotor in a staggered manner in the radial direction, wherein the N-pole magnetic conduction strip and the S-pole magnetic conduction strip are respectively located on the same ring surface.
Compared with the prior art, the utility model has the following advantages:
1. the excitation magnetic field is provided by an external power supply, the excitation coil is powered on, the excitation outer ring and the excitation inner ring are magnetized after the excitation coil generates the magnetic field, so that the excitation outer ring and the excitation inner ring form an N-pole magnetic ring and an S-pole magnetic ring respectively, and the excitation outer ring and the excitation inner ring magnetize an N-pole magnetic conduction strip and an S-pole magnetic conduction strip respectively, so that the magnetic conduction strips on the inner cylinder of the rotor form an alternate magnetic field; therefore, the magnetic field can be adjusted more accurately and stably by controlling the current of the excitation coil, so that the adjustment range of the rotating speed of the motor is further enlarged; in addition, the rotor has no influence of a coil, and can provide enough magnetic field intensity theoretically, so that the defect of low power density of the motor in the existing market is overcome; meanwhile, the magnetic field intensity can be increased, so that the product with the same power has smaller volume and is suitable for complex installation environment.
2. The rotor inner cylinder is provided with the magnetic conduction strip, so that the rotor inner cylinder is light in weight and easy to dissipate heat and cool; no coil is used any more, and no power is needed, so that the loss of the rotor part is reduced, the structure is simpler, and the assembly is more convenient.
3. The stator and the rotor can be controlled simultaneously, so that the motor has the advantages of quick response, wide speed regulation range, excellent starting, rated power operation and excellent overload capacity.
4. After this scheme of adoption assembly motor, do not have easy-to-wear spare parts such as brush and conducting ring for the motor becomes semi-permanent electrical apparatus, can effectively reduce use cost.
Drawings
Fig. 1 is a schematic structural view of a rotor inner tube in embodiment 1.
Fig. 2 is a cross-sectional view of fig. 1.
Fig. 3 is a schematic view of the rotor inner tube structure in embodiment 2.
Fig. 4 is a schematic view of the structure of fig. 3 after cutting.
In the figure: 1-rotor inner cylinder, 2-magnetic conduction strip, 3-excitation outer ring, 4-excitation inner ring, 5-excitation coil, 6-connecting rod, 7-magnetic conduction disk.
Detailed Description
The utility model will be further explained with reference to the drawings and the embodiments.
Example 1: referring to fig. 1 and 2, the excitation controllable motor rotor structure comprises a rotor inner cylinder 1, wherein the rotor inner cylinder 1 is made of a magnetic isolation material such as stainless steel, copper or aluminum. A plurality of magnetic conduction grooves are distributed around the outer side surface of the rotor inner cylinder 1, are arranged along the axial direction of the rotor inner cylinder 1 and extend to the two ends of the rotor inner cylinder 1; the magnetic conduction grooves are internally provided with magnetic conduction strips 2, wherein the magnetic conduction strips 2 comprise N-pole magnetic conduction strips and S-pole magnetic conduction strips, and the N-pole magnetic conduction strips and the S-pole magnetic conduction strips are alternately distributed.
An excitation disk is arranged at one end of the rotor inner cylinder 1, and comprises an excitation outer ring 3, an excitation inner ring 4 and an excitation coil 5. The excitation outer ring 3 and the excitation inner ring 4 are arranged coaxially with the rotor inner cylinder 1 and are connected through a plurality of connecting rods 6 arranged along the radial direction; the connecting rod 6 is made of magnetic conductive materials such as silicon steel. Each connecting rod 6 is respectively wound with an excitation coil 5, after the excitation coil 5 is electrified, the excitation outer ring 3 can form an N-pole magnetic ring or an S-pole magnetic ring, and correspondingly, the excitation inner ring 4 can form an S-pole magnetic ring or an N-pole magnetic ring. In actual manufacturing, the other end of the rotor inner cylinder 1 is also provided with an excitation disc, and the two excitation discs are arranged with the same axial lead; two excitation discs are respectively arranged at two ends of the rotor inner cylinder 1, so that the magnetization effect of the magnetic strip 2 can be effectively improved, and the magnetic field intensity of the magnetic strip 2 is ensured. Preferably, after the excitation disk at one end of the rotor inner cylinder 1 is electrified, the outer ring of the excitation disk forms an N-pole magnetic ring, and the inner ring forms an S-pole magnetic ring; after the excitation disk at the other end of the rotor inner cylinder 1 is electrified, an S pole magnetic ring is formed on the outer ring of the excitation disk, and an N pole magnetic ring is formed on the inner ring of the excitation disk; this facilitates the power supply access to the exciter coil 5.
The end part of the N pole magnetic strip extends to be close to the N pole magnetic ring or is attached to the N pole magnetic ring, and correspondingly, the end part of the S pole magnetic strip extends to be close to the S pole magnetic ring or is attached to the S pole magnetic ring.
In the actual processing process, as an implementation mode, the N-pole magnetic conducting strip and the S-pole magnetic conducting strip are located on the same ring surface which takes the axial lead of the rotor inner cylinder 1 as the central line, and are located on the same ring surface with the magnetic conducting disk 7. And the two ends of the N pole magnetic conducting strip and the S pole magnetic conducting strip are respectively provided with a distance from the excitation disc so as to avoid demagnetization caused by the action of the magnetic fields of the excitation outer ring 3 and the excitation inner ring 4. And magnetic conduction convex blocks are respectively formed at two ends of the magnetic conduction strip 2, extend out from the end part of the rotor inner cylinder 1, and correspondingly extend to be close to the magnetic conduction outer ring and the magnetic conduction inner ring or correspondingly extend to be contacted with the magnetic conduction outer ring and the magnetic conduction inner ring. Furthermore, in order to better correspond to the excitation discs at two ends of the rotor inner cylinder 1, the magnetic conduction convex block at one end of the magnetic conduction strip 2 is opposite to the excitation outer ring 3, and the magnetic conduction convex block at the other end is opposite to the excitation inner ring 4.
As another embodiment, the N-pole magnetic conducting strip and the S-pole magnetic conducting strip are distributed along the rotor inner cylinder 1 in a staggered manner in the radial direction, wherein the N-pole magnetic conducting strip and the S-pole magnetic conducting strip are respectively located on the same ring surface; one end of the N-pole magnetic conduction strip directly extends out of the end part of the rotor inner cylinder 1 and then is in contact with or in clearance fit with the magnetic conduction outer ring, and the other end of the N-pole magnetic conduction strip is connected with an L-shaped magnetic conduction block and then is in contact with or in clearance fit with the magnetic conduction inner ring; similarly, one end of the S-pole magnetic conduction strip directly extends out of the end part of the rotor inner cylinder 1 and then is in contact or clearance fit with the magnetic conduction inner ring, and the other end of the S-pole magnetic conduction strip is connected with an L-shaped magnetic conduction block and then is in contact or clearance fit with the magnetic conduction outer ring.
In the assembly process, the excitation outer ring 3 of the excitation disc is fixedly connected with the stator shell of the motor, and the excitation inner ring 4 is sleeved on the motor shaft in an empty mode, so that the assembly is simple and rapid. Therefore, the stator and the rotor can be simultaneously controlled, so that the motor has the advantages of quick response, wide speed regulation range, excellent starting, rated power operation and overload capacity. In addition, the magnetic field can be adjusted more accurately and stably by controlling the current of the excitation coil 5, so that the adjustment range of the rotating speed of the motor is further enlarged; in addition, the rotor has no influence of a coil, and can provide enough magnetic field intensity theoretically, so that the defect of low power density of the motor in the existing market is overcome; meanwhile, the magnetic field intensity can be increased, so that the product with the same power has smaller volume and is suitable for complex installation environment.
Example 2: referring to fig. 3 and 4, unlike embodiment 1, a magnetic conductive disk 7 is provided between the field disk and the rotor inner tube 1, wherein the field disk and the magnetic conductive disk 7 are fitted (contacted) or in a clearance fit (i.e., capable of near-field magnetic conduction). The magnetic conductive disc 7 comprises a magnetic conductive outer ring and a magnetic conductive inner ring which are arranged coaxially, and the magnetic conductive outer ring and the magnetic conductive inner ring are respectively opposite to the excitation outer ring 3 and the excitation inner ring 4; the magnetic conduction outer ring and the magnetic conduction inner ring are correspondingly in contact with or in clearance fit with the excitation outer ring 3 or the excitation inner ring 4 (namely, near-field magnetic conduction can be carried out), and the magnetic conduction outer ring and the magnetic conduction inner ring are correspondingly in clearance fit with, contact with or connected with the N pole magnetic conduction strip and the S pole magnetic conduction strip (namely, near-field magnetic conduction can be carried out). In the manufacturing process, as a mode, the magnetic conduction outer ring and the magnetic conduction inner ring are directly and fixedly connected with the corresponding magnetic conduction strips 2, so that the stability is better. As another mode, the magnetic conduction outer ring and the magnetic conduction inner ring are fixedly connected with the rotor inner cylinder 1, so that the magnetic conduction outer ring and the magnetic conduction inner ring are in clearance fit or contact with the N-pole magnetic conduction strip and the S-pole magnetic conduction strip correspondingly, and assembly is more convenient and quicker.
The end part of the N pole magnetic strip or the S pole magnetic strip is fixedly connected with the magnetic conduction outer ring, and correspondingly, the end part of the S pole magnetic strip or the N pole magnetic strip is fixedly connected with the magnetic conduction inner ring. In specific implementation, after the excitation disk at one end of the rotor inner cylinder 1 is electrified, the outer ring of the excitation disk forms an N-pole magnetic ring, and the inner ring forms an S-pole magnetic ring; after the excitation disk at the other end of the rotor inner cylinder 1 is electrified, an S pole magnetic ring is formed on the outer ring of the excitation disk, and an N pole magnetic ring is formed on the inner ring of the excitation disk; this facilitates the power supply access to the exciter coil 5. One end of the N-pole magnetic conduction strip is connected with the magnetic conduction outer ring at one end of the rotor inner cylinder 1, the other end of the N-pole magnetic conduction strip is connected with the magnetic conduction inner ring at the other end of the rotor inner cylinder 1, and the N-pole magnetic conduction inner ring is opposite to the N-pole magnetic rings of the two magnetic conduction disks 7. One end of the S-pole magnetic conduction strip is connected with the magnetic conduction inner ring at one end of the rotor inner cylinder 1, and the other end of the S-pole magnetic conduction strip is connected with the magnetic conduction outer ring at the other end of the rotor inner cylinder 1 and is opposite to the S-pole magnetic rings of the two magnetic conduction disks 7.
In the scheme, by arranging the magnetic conduction disk 7, the magnetic conduction area of the magnetic conduction disk 7 and the excitation disk is larger, so that the magnetic conduction effect is better; after the magnetic conduction ring is magnetized, the magnetic conduction strip 2 is magnetized, and the magnetic conduction strip 2 is closer to the magnetic conduction ring and the relative position is unchanged, so that the magnetic conduction strip can be better magnetized, the magnetic field intensity of the magnetic conduction strip 2 is greatly improved, and the magnetic field stability of the magnetic conduction strip 2 is ensured. In addition, the scheme enables non-contact magnetic conduction to be formed between the excitation disc and the rotor inner cylinder 1, and the service life of each component can be effectively prolonged. With this arrangement, when dc power is applied to the field coil 5, each field winding is connected in series in the same direction, so that a strong N, S (or S, N) pole is generated on the inner and outer plates of the field plate, and the field plate forms a fixed N, S pole.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and those skilled in the art should understand that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all that should be covered by the claims of the present invention.
Claims (6)
1. The utility model provides a controllable formula electric motor rotor structure excites, includes the rotor inner tube, its characterized in that: a plurality of magnetic conduction grooves are distributed around the outer side surface of the rotor inner cylinder, the magnetic conduction grooves are arranged along the axial direction of the rotor inner cylinder, and two ends of the magnetic conduction grooves are close to or penetrate through two ends of the rotor inner cylinder; the magnetic conduction grooves are internally provided with magnetic conduction strips, wherein the magnetic conduction strips comprise N-pole magnetic conduction strips and S-pole magnetic conduction strips, and the N-pole magnetic conduction strips and the S-pole magnetic conduction strips are alternately distributed;
one end of the rotor inner cylinder is provided with an excitation disk, and the excitation disk comprises an excitation outer ring, an excitation inner ring and an excitation coil; the excitation outer ring and the excitation inner ring are arranged coaxially with the rotor inner cylinder and are connected through a plurality of connecting rods arranged along the radial direction; each connecting rod is respectively wound with an excitation coil, after the excitation coil is electrified, an excitation outer ring can form an N-pole magnetic ring or an S-pole magnetic ring, and correspondingly, an excitation inner ring can form an S-pole magnetic ring or an N-pole magnetic ring;
the end part of the N pole magnetic strip extends to be close to the N pole magnetic ring or is attached to the N pole magnetic ring, and correspondingly, the end part of the S pole magnetic strip extends to be close to the S pole magnetic ring or is attached to the S pole magnetic ring.
2. The field-controllable motor rotor structure according to claim 1, wherein: the other end of the rotor inner cylinder is also provided with an excitation disk, and the two excitation disks are arranged with the same axial lead.
3. The field-controllable motor rotor structure according to claim 2, wherein: after an excitation disk at one end of the inner cylinder of the rotor is electrified, an N-pole magnetic ring is formed on the outer ring of the excitation disk, and an S-pole magnetic ring is formed on the inner ring of the excitation disk; after the excitation disk at the other end of the rotor inner cylinder is electrified, an S pole magnetic ring is formed on the outer ring of the excitation disk, and an N pole magnetic ring is formed on the inner ring of the excitation disk.
4. The field-controllable motor rotor structure according to claim 1, 2 or 3, wherein: a magnetic conduction disc is arranged between the excitation disc and the rotor inner cylinder, the magnetic conduction disc comprises a magnetic conduction outer ring and a magnetic conduction inner ring which are arranged with the same axial lead, and the magnetic conduction outer ring and the magnetic conduction inner ring are respectively opposite to the excitation outer ring and the excitation inner ring; the magnetic conduction outer ring and the magnetic conduction inner ring are correspondingly in contact or clearance fit with the excitation outer ring or the excitation inner ring, and the magnetic conduction outer ring and the magnetic conduction inner ring are correspondingly in clearance fit, contact or connection with the N pole magnetic conduction strip and the S pole magnetic conduction strip.
5. The field-controllable motor rotor structure according to claim 4, wherein: the N-pole magnetic conduction strip and the S-pole magnetic conduction strip are positioned on the same ring surface which takes the axial lead of the rotor inner cylinder as the central line, and are positioned on the same ring surface with the magnetic conduction disk.
6. The field-controllable motor rotor structure according to claim 4, wherein: the N-pole magnetic conduction strip and the S-pole magnetic conduction strip are distributed along the inner cylinder of the rotor in a staggered mode in the radial direction, and the N-pole magnetic conduction strip and the S-pole magnetic conduction strip are located on the same ring surface respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122466184.9U CN215911957U (en) | 2021-10-13 | 2021-10-13 | Excitation controllable motor rotor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122466184.9U CN215911957U (en) | 2021-10-13 | 2021-10-13 | Excitation controllable motor rotor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215911957U true CN215911957U (en) | 2022-02-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122466184.9U Active CN215911957U (en) | 2021-10-13 | 2021-10-13 | Excitation controllable motor rotor structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215911957U (en) |
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2021
- 2021-10-13 CN CN202122466184.9U patent/CN215911957U/en active Active
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