CN212323835U - Rotor assembly structure of permanent magnet generator - Google Patents
Rotor assembly structure of permanent magnet generator Download PDFInfo
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- CN212323835U CN212323835U CN202021213603.7U CN202021213603U CN212323835U CN 212323835 U CN212323835 U CN 212323835U CN 202021213603 U CN202021213603 U CN 202021213603U CN 212323835 U CN212323835 U CN 212323835U
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Abstract
The utility model relates to a permanent magnet generator's rotor subassembly structure, including rotor core, a plurality of circumference evenly distributed's permanent magnetism magnetic pole is installed to rotor core's outer circumference, still include rotor base, rotor base's axle center sets up the ventilation shaft hole that the axial runs through, rotor core both ends set up first end plate, the second end plate respectively, the equal mounting hole in axle center of first end plate, rotor core, the second end plate, the pore wall of mounting hole is equipped with a plurality of axial and runs through the ventilation groove, rotor base cooperation is in this mounting hole, make rotor base's outer circumference and ventilation groove form closed heat dissipation through-hole, rotor base one end sets up flange, rotor base is located and is equipped with limit flange between flange and the first end plate, a plurality of connecting bolt circumference evenly distributed pass flange, first end plate, rotor core, the second end plate with rotor base in proper order, First end plate, rotor core, second end plate are connected fixedly, and one side of first end plate and second end plate back of the body sets up a plurality of blades respectively.
Description
Technical Field
The utility model relates to a permanent-magnet machine field, in particular to permanent-magnet machine's rotor subassembly structure.
Background
The permanent magnet generator refers to a power generation device that converts mechanical energy converted from thermal energy into electrical energy, and an excitation magnetic field of the power generation device is generated by a permanent magnet. At present, a rotor assembly of a permanent magnet generator comprises a rotor core and a rotor shaft, wherein the rotor core is fixed on the rotor shaft and formed by stacking a plurality of punching sheets, and the rotor shaft is connected with a driving device of the permanent magnet generator. The rotor of this structure requires a bearing to support the rotor shaft on the housing, and is complicated in structure and installation. Moreover, when the generator works, heat is generated, but the rotor shaft adopted by the rotor is of a solid structure, the heat of the rotor shaft is not easy to dissipate, the heat dissipation performance of the generator is poor, the aging of circuits and components of the generator can be accelerated, and the service life of the generator is shortened.
Disclosure of Invention
The utility model aims at prior art not enough, provide a permanent magnet generator's rotor subassembly structure, stable in structure is reliable, simple installation, and the ventilation shaft hole of rotor base and the ventilation groove that sets up have increased the space that the air flows in the rotor, have improved the heat dispersion of rotor greatly, have prolonged the life of generator.
The technical scheme of the utility model is that: the utility model provides a permanent magnet generator's rotor subassembly structure, includes the rotor core that is formed by a plurality of rotor punching stacks, a plurality of circumference evenly distributed's permanent magnetism magnetic pole is installed to rotor core's outer circumference, still includes the rotor base, the axle center of rotor base sets up the ventilation shaft hole that the axial runs through, the both ends of rotor core set up first end plate, second end plate respectively and are used for spacing rotor core's rotor punching, the axle center of first end plate, rotor core, second end plate all sets up the mounting hole that the axial runs through, the pore wall of mounting hole is equipped with a plurality of axial runs through's circumference evenly distributed's ventilation groove, the rotor base cooperation is in this mounting hole, makes the outer circumference of rotor base and ventilation groove form closed heat dissipation through-hole, the one end of rotor base sets up the flange that is used for connecting drive arrangement, the rotor base is located to be equipped with a spacing flange between flange and the first end plate and makes and leave between flange and in the interval of ventilation, a plurality of connecting bolt circumference evenly distributed pass flange, first end plate, rotor core, second end plate in proper order with rotor base, first end plate, rotor core, second end plate connection fixed, one side of first end plate and second end plate back of the body sets up a plurality of axially protruding blades respectively.
And the rotor base is in transition fit with the mounting hole of the rotor iron core.
The rotor base, the first end plate, the rotor iron core, the second end plate and the connecting bolt are in transition fit.
And the limiting flange of the rotor base is provided with a yielding groove for yielding the connecting bolt.
The radius of the limiting flange of the rotor base is smaller than the distance from the bottom of each ventilating groove to the axis of the rotor base.
The axial thickness of the first end plate is less than the axial thickness of the second end plate.
The outer circumference of rotor core sets up a plurality of magnetic pole mounting grooves that axial run through and circumference evenly distributed, permanent magnetism magnetic pole installs in rotor core's magnetic pole mounting groove.
The ventilation groove is a U-shaped groove.
And a plurality of connecting holes for bolts to pass through are formed in the connecting flange.
Adopt above-mentioned technical scheme: the rotor comprises a rotor core formed by superposing a plurality of rotor punching sheets, a plurality of permanent magnetic poles which are uniformly distributed in the circumferential direction are arranged on the outer circumference of the rotor core, and the rotor comprises a rotor base, wherein an axial through ventilation shaft hole is formed in the axis of the rotor base, a first end plate and a second end plate are respectively arranged at the two ends of the rotor core and used for limiting the rotor punching sheets of the rotor core, axial through mounting holes are formed in the axes of the first end plate, the rotor core and the second end plate, a plurality of axially through ventilation grooves which are uniformly distributed in the circumferential direction are formed in the hole wall of each mounting hole, the rotor base is matched in the mounting holes to enable the outer circumference of the rotor base and the ventilation grooves to form a closed heat dissipation through hole, a connecting flange used for connecting a driving device is arranged at one end of the rotor base, a limiting flange is arranged between the connecting flange and the first end plate to enable a distance used for ventilation to be reserved, a plurality of connecting bolt circumference evenly distributed pass flange, first end plate, rotor core, second end plate in proper order with rotor base, first end plate, rotor core, second end plate connection fixed, one side that first end plate and second end plate are back of the body sets up a plurality of axially protruding blades respectively. The rotor assembly is stable and reliable in structure, the rotor base, the first end plate, the rotor core and the second end plate can be fixedly connected together through the bolts, and the rotor is compact in structure. During installation, the connecting flange is directly connected and fixed with the output end of the driving device of the permanent magnet generator through the bolt, the rotor is extremely simple and fast to install, and the processing efficiency is improved. Moreover, the ventilation shaft hole of the rotor base and the ventilation groove penetrating through the first end plate, the rotor core and the second end plate can not only reduce the weight of the rotor, save materials, but also increase the circulation of air in the rotor, increase the heat dissipation area of the interior of the rotor in contact with the air, ensure that the rotor base and the rotor core of the rotor have good heat dissipation, improve the heat dissipation performance of the generator, slow down the aging of circuits and components of the generator and prolong the service life of the generator. Meanwhile, the generator has better heat dissipation performance, smaller heat generation and lower loss, can effectively reduce the copper consumption of the winding of the stator component, and saves the material cost. In addition, the first end plate and the second end plate can fix the rotor sheets of the rotor core, and the rotor sheets do not need to be welded and fixed, so that the processing steps of rotor processing are reduced, and the production efficiency is improved. Besides, the blades on the first end plate and the second end plate have the function of accelerating air flow, so that the heat dissipation performance of the generator can be enhanced.
The transition fit is adopted between the mounting holes of the rotor base and the rotor core, and the transition fit can prevent the rotor core and the rotor base from vibrating, so that the heat productivity of the generator can be reduced.
The rotor base, the first end plate, the rotor iron core, the second end plate and the connecting bolt are in transition fit. This transition cooperation has carried out spacingly to the bolt, and the location between rotor base, first end plate, rotor core, the second end plate is also better, makes bolt transition cooperation still can effectively avoid the vibration of operation in-process bolt and the bolt resonance phenomenon of generating heat that arouses by the electromagnetic force, guarantees that the generator does not have unusual phenomenon of generating heat.
The limiting flange of the rotor base is provided with a yielding groove for yielding the connecting bolt, and the yielding groove can avoid the interference of the connecting bolt and the limiting flange.
The radius of the limiting flange of the rotor base is smaller than the distance from the bottom of each ventilating groove to the axis of the rotor base, so that the two ends of each ventilating groove can be opened, and air can flow through and dissipate heat in each ventilating groove.
The axial thickness of the first end plate is less than the axial thickness of the second end plate. Because the strength of the thicker second end plate is good enough, the thicker second end plate can bear larger force to press the rotor punching sheet. The thinner first end plate will receive a portion of the force from the stop flange of the rotor base, yet still have sufficient strength and can reduce weight.
The outer circumference of rotor core sets up a plurality of magnetic pole mounting grooves that axial run through and circumference evenly distributed, permanent magnetism magnetic pole installs in rotor core's magnetic pole mounting groove. The permanent magnetic poles are alternately arranged in the magnetic pole mounting grooves by adopting magnetic poles N and S, and the permanent magnetic poles are simple and convenient to mount.
The ventilation groove is a U-shaped groove, and the U-shaped groove is simpler to process.
The rotor assembly of the permanent magnet generator is stable, reliable and compact in structure, extremely simple and rapid to install, and machining efficiency is improved. Moreover, the ventilation shaft hole of the rotor base and the ventilation groove penetrating through the first end plate, the rotor iron core and the second end plate can reduce the weight of the rotor, save materials, increase the circulation of air in the rotor, improve the heat dissipation performance of the generator, slow down the aging of circuits and components of the generator and prolong the service life of the generator. Meanwhile, the generator has small heat generation and low loss, can effectively reduce the copper consumption of the winding of the stator component, and saves the material cost.
The invention is further described with reference to the drawings and the specific embodiments.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of FIG. 1 taken along line A;
FIG. 3 is a right side view of FIG. 2;
FIG. 4 is a schematic structural view of a rotor base;
FIG. 5 is a schematic structural view of a rotor core;
FIG. 6 is a schematic view of the first end plate;
fig. 7 is a structural schematic view of the second end plate.
Detailed Description
Referring to fig. 1 to 7, a rotor assembly structure of a permanent magnet generator includes a rotor core 2 formed by stacking a plurality of rotor sheets, a plurality of magnetic pole mounting grooves 10 axially penetrating and circumferentially and uniformly distributed are formed in the outer circumference of the rotor core 2, and permanent magnet poles 3 are respectively mounted in each magnetic pole mounting groove 10. The permanent magnetic poles 3 are alternately arranged in the magnetic pole mounting grooves 10 by adopting magnetic poles N and S, so that the permanent magnetic poles 3 are simple and convenient to mount. The rotor further comprises a rotor base 1, an axial through ventilation shaft hole 1-1 is formed in the axis of the rotor base 1, a first end plate 7 and a second end plate 4 are arranged at the two ends of the rotor core 2 respectively and used for limiting rotor punching sheets of the rotor core 2, and the first end plate 7 and the second end plate 4 are made of non-magnetic metal materials. The axle center of first end plate 7, rotor core 2, second end plate 4 all sets up the mounting hole 9 that the axial runs through, the pore wall of mounting hole 9 is equipped with the ventilation groove 5 of the circumference evenly distributed that a plurality of axial run through, ventilation groove 5 is "U" shape groove, and the processing in "U" shape groove is simpler. The rotor base 1 is in transition fit in the mounting hole 9, so that the outer circumference of the rotor base 1 and the ventilation groove 5 form a closed heat dissipation through hole. The transition fit can prevent the rotor core 2 and the rotor base 1 from generating vibration, and is more favorable for reducing the heat productivity of the generator. One end of the rotor base 1 is provided with a connecting flange 1-5 for connecting a driving device, and the connecting flange 1-5 is provided with a plurality of connecting holes 1-4 for bolts connected with the driving device to penetrate through. A limiting flange 1-2 is arranged between the connecting flange 1-5 and the first end plate 7 of the rotor base 1, so that a space for ventilation is reserved between the connecting flange 1-5 and the first end plate 7. The radius of the limiting flange 1-2 of the rotor base 1 is smaller than the distance from the bottom of each ventilation groove 5 to the axis of the rotor base 1. Therefore, the two ends of each ventilation groove 5 are both opened, and air can flow through each ventilation groove 5 for heat dissipation. A plurality of connecting bolts 6 are evenly distributed in the circumferential direction and sequentially penetrate through the connecting flanges 1-5, the first end plate 7, the rotor core 2 and the second end plate 4 to connect and fix the rotor base 1, the first end plate 7, the rotor core 2 and the second end plate 4 together. The rotor base 1, the first end plate 7, the rotor iron core 2, the second end plate 4 and the connecting bolt 6 are in transition fit. This transition cooperation has carried on spacingly to connecting bolt 6, and the location between rotor base 1, first end plate 7, rotor core 2, the second end plate 4 is also better, makes connecting bolt 6 transition cooperation still can effectively avoid the vibration of connecting bolt 6 among the operation process and the connecting bolt 6 resonance phenomenon of generating heat that arouses by the electromagnetic force, guarantees that the generator does not have unusual phenomenon of generating heat. The limiting flange 1-2 of the rotor base 1 is provided with a yielding groove 1-3 for yielding the connecting bolt 6, and the yielding groove 1-3 can prevent the connecting bolt 6 from interfering with the limiting flange 1-2. The axial thickness of the first end plate 7 is smaller than that of the second end plate 4, and the thicker second end plate 4 has enough strength and can bear larger force to compress the rotor sheets forming the rotor core 2. The thinner first end plate 7 will receive a part of the force from the position-defining flange 1-2 of the rotor base 1, still having sufficient strength and being reduced in weight. One side that first end plate 7 carried on the back with the second end plate 4 respectively sets up a plurality of bellied blades of axial 8, and blade 8 and the end plate structure as an organic whole that corresponds, two end plates that the during operation took blade 8 can rotate together with rotor core 2, rotor base 1, and blade 8 can accelerate the flow of air, improves the heat dispersion of generator.
The rotor assembly is stable and reliable in structure, the rotor base 1, the first end plate 7, the rotor iron core 2 and the second end plate 4 can be fixedly connected together through the connecting bolts 6, and the rotor is compact in structure. During installation, the connecting flanges 1-5 are directly connected and fixed with the output end of the driving device of the permanent magnet generator through bolts, the rotor is extremely simple and fast to install, and the processing efficiency is improved. During operation, the output end of the driving device drives the rotor base 1 to rotate, and the rotor base 1 drives the rotor core 2, the first end plate 7 and the second end plate 4 to rotate together, so that the rotor of the permanent magnet generator rotates. The ventilation shaft hole 1-1 of the rotor base 1 and the ventilation groove 5 penetrating through the first end plate 7, the rotor core 2 and the second end plate 4 can not only reduce the weight of the rotor and save materials, but also increase the circulation of air in the rotor, increase the heat dissipation area of the interior of the rotor contacting with air, ensure that the rotor base 1 and the rotor core 2 of the rotor have good heat dissipation, thereby improving the heat dissipation performance of the generator, slowing down the aging of circuits and components of the generator and prolonging the service life of the generator. Meanwhile, the better the heat dissipation performance of the generator is, the smaller the heat generation is, the lower the loss is, the copper consumption of the winding of the stator component of the generator can be effectively reduced, and the material cost is saved. In addition, the first end plate 7 and the second end plate 4 form fixation of each rotor sheet of the rotor core 2, and each rotor sheet does not need to be welded and fixed, so that the processing steps of rotor processing are reduced, and the production efficiency is improved.
Claims (9)
1. The utility model provides a permanent magnet generator's rotor subassembly structure, includes rotor core (2) that are formed by a plurality of rotor punching stack, a plurality of circumference evenly distributed's permanent magnetism magnetic pole (3), its characterized in that are installed to the outer circumference of rotor core (2): still include rotor pedestal (1), the axle center of rotor pedestal (1) sets up ventilation shaft hole (1-1) that the axial runs through, the both ends of rotor core (2) set up first end plate (7), second end plate (4) respectively and are used for spacing rotor core's (2) rotor punching, the axle center of first end plate (7), rotor core (2), second end plate (4) all sets up the mounting hole (9) that the axial runs through, the pore wall of mounting hole (9) is equipped with a plurality of axial through's circumference evenly distributed's ventilation groove (5), rotor pedestal (1) cooperation is in this mounting hole (9), makes the outer circumference of rotor pedestal (1) and ventilation groove (5) form closed heat dissipation through-hole, the one end of rotor pedestal (1) sets up flange (1-5) that are used for connecting drive arrangement, rotor pedestal (1) is located and is equipped with a spacing between flange (1-5) and first end plate (7) The flange (1-2) enables a space for ventilation to be reserved between the connecting flange (1-5) and the first end plate (7), a plurality of connecting bolts (6) are circumferentially and uniformly distributed and sequentially penetrate through the connecting flange (1-5), the first end plate (7), the rotor core (2) and the second end plate (4) to connect and fix the rotor base (1), the first end plate (7), the rotor core (2) and the second end plate (4), and a plurality of axially protruding blades (8) are respectively arranged on one side, back to the back, of the first end plate (7) and the second end plate (4).
2. The rotor assembly structure of a permanent magnet generator according to claim 1, wherein: the rotor base (1) and the mounting hole (9) of the rotor iron core (2) are in transition fit.
3. The rotor assembly structure of a permanent magnet generator according to claim 1, wherein: the rotor base (1), the first end plate (7), the rotor core (2), the second end plate (4) and the connecting bolt (6) are in transition fit.
4. The rotor assembly structure of a permanent magnet generator according to claim 1, wherein: the limiting flange (1-2) of the rotor base (1) is provided with a yielding groove (1-3) for yielding the connecting bolt (6).
5. The rotor assembly structure of a permanent magnet generator according to claim 1, wherein: the radius of the limiting flange (1-2) of the rotor base (1) is smaller than the distance from the bottom of each ventilating groove (5) to the axis of the rotor base (1).
6. The rotor assembly structure of a permanent magnet generator according to claim 1, wherein: the axial thickness of the first end plate (7) is smaller than the axial thickness of the second end plate (4).
7. The rotor assembly structure of a permanent magnet generator according to claim 1, wherein: the outer circumference of rotor core (2) sets up a plurality of magnetic pole mounting grooves (10) that the axial runs through and circumference evenly distributed, install in magnetic pole mounting groove (10) of rotor core (2) permanent magnetism magnetic pole (3).
8. The rotor assembly structure of a permanent magnet generator according to claim 1, wherein: the ventilation groove (5) is a U-shaped groove.
9. The rotor assembly structure of a permanent magnet generator according to claim 1, wherein: the connecting flanges (1-5) are provided with a plurality of connecting holes (1-4) for bolts to pass through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021213603.7U CN212323835U (en) | 2020-06-28 | 2020-06-28 | Rotor assembly structure of permanent magnet generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021213603.7U CN212323835U (en) | 2020-06-28 | 2020-06-28 | Rotor assembly structure of permanent magnet generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212323835U true CN212323835U (en) | 2021-01-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021213603.7U Active CN212323835U (en) | 2020-06-28 | 2020-06-28 | Rotor assembly structure of permanent magnet generator |
Country Status (1)
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|---|---|
| CN (1) | CN212323835U (en) |
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2020
- 2020-06-28 CN CN202021213603.7U patent/CN212323835U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220824 Address after: No. 2, No. 10, Xingwu Road, Huaxi Street, Banan District, Chongqing 401320 Patentee after: Chongqing Kyrgyzstan Corning electromechanical Co.,Ltd. Address before: Chen Jia Wan 400054 Chongqing city Banan District lijiatuo Three Village No. 40 Patentee before: CHONGQING JILI YUNFENG INDUSTRY (Group) Co.,Ltd. |
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| TR01 | Transfer of patent right |