CN216056656U - Motor for simultaneously driving multiple rotor shafting - Google Patents
Motor for simultaneously driving multiple rotor shafting Download PDFInfo
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- CN216056656U CN216056656U CN202122175831.0U CN202122175831U CN216056656U CN 216056656 U CN216056656 U CN 216056656U CN 202122175831 U CN202122175831 U CN 202122175831U CN 216056656 U CN216056656 U CN 216056656U
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Abstract
The utility model relates to the field of motors, in particular to a motor capable of driving a plurality of rotor shafting simultaneously. The motor comprises a motor barrel, a front bearing seat, a rear bearing seat, a stator shaft system and a plurality of rotor shaft systems; the front bearing seat and the rear bearing seat are respectively fixed at two ends of the motor cylinder, and the plurality of rotor shafting are distributed at the outer side of the stator shafting along the circumferential direction; the stator shaft system comprises a stator shaft and a stator winding, two ends of the stator shaft are respectively fixed on the front bearing seat and the rear bearing seat, and the stator winding is fixedly sleeved on the stator shaft; the rotor shaft system comprises a rotor shaft, rotor bearings and rotor magnetic steel, wherein the rotor bearings are respectively sleeved at two ends of the rotor shaft and are respectively positioned in corresponding bearing holes of the front bearing block and the rear bearing block; the rotor magnetic steels are fixedly arranged on the rotor shaft, and the positions of the rotor magnetic steels of the rotor shaft in the plurality of rotor shaft systems respectively correspond to the magnetic driving positions of the stator windings. The motor reduces the number of stator windings of the motor and reduces the cost of the motor.
Description
Technical Field
The utility model relates to the field of motors, in particular to a motor capable of driving a plurality of rotor shafting simultaneously.
Background
An electric machine, commonly known as a motor, is an electromagnetic device that converts or transmits electric energy according to the law of electromagnetic induction. Its main function in the circuit is to generate driving torque as the power source for electric appliances or various machines.
The Chinese utility model patent application (publication No. CN2842847, published: 20061129) discloses a high-power permanent magnet motor, which comprises a rotating shaft, a rotor and a stator, wherein tile-shaped magnetic steel is pasted on the axial surface of the rotor; the rotor is internally provided with a plurality of through holes which are opened along the axial direction, the through holes are uniformly arranged along the radial direction of the rotor, metal conducting bars with good thermal conductivity are cast and filled in the through holes, then the metal conducting bars and two end rings of the rotor are cast into a whole, and the end ring of the rotor and the conducting bars are made of the same metal, so that the metal conducting bars and the end ring of the rotor form a heat-conducting squirrel cage; meanwhile, the outer surface of the tile-shaped magnetic steel of the rotor is subjected to prestress close winding by adopting a magnetism isolating stainless steel wire, and then epoxy resin for preventing oxidation is coated. The high-power permanent magnet motor has more uniform and rapid heat dissipation effect, effectively reduces the temperature rise of the permanent magnet motor, breaks through the difficulty that the capacity of the permanent magnet motor is difficult to improve, and can reach 120KW at the maximum power through tests. The reliability and the safety of the motor work are also improved, and the service life of the motor is greatly prolonged.
The prior art has the following defects: the rotor of the traditional motor, no matter the inner rotor or the outer rotor, only can drive one rotor by one stator winding, and when the motor needs to have a plurality of output ends, a plurality of stator windings are needed to drive a plurality of rotors; thereby increasing the number of stator windings of the motor and increasing the cost of the motor.
Disclosure of Invention
The purpose of the utility model is: in order to solve the problems, a stator winding is fixedly arranged on a stator shaft, a plurality of rotor shaft systems are arranged on the outer side of the stator winding in the circumferential direction, and the stator winding drives a plurality of rotor shafts simultaneously by driving rotor magnetic steel; therefore, one stator shaft system can drive a plurality of rotor shaft systems simultaneously, the number of stator windings of the motor is reduced, and the cost of the motor is reduced.
In order to achieve the purpose, the utility model adopts the following technical scheme:
preferably, the motor simultaneously drives a plurality of rotor shaft systems, and comprises a motor barrel, a front bearing seat, a rear bearing seat, a stator shaft system and a plurality of rotor shaft systems; the front bearing seat and the rear bearing seat are respectively fixed at two ends of the motor cylinder, and the plurality of rotor shafting are distributed at the outer side of the stator shafting along the circumferential direction; the stator shaft system comprises a stator shaft and a stator winding, two ends of the stator shaft are respectively fixed on the front bearing seat and the rear bearing seat, and the stator winding is fixedly sleeved on the stator shaft; the rotor shaft system comprises a rotor shaft, rotor bearings and rotor magnetic steel, wherein the rotor bearings are respectively sleeved at two ends of the rotor shaft and are respectively positioned in corresponding bearing holes of the front bearing block and the rear bearing block; the rotor magnetic steels are fixedly arranged on the rotor shaft, and the positions of the rotor magnetic steels of the rotor shaft in the plurality of rotor shaft systems respectively correspond to the magnetic driving positions of the stator windings.
Preferably, the stator winding includes a stator core fixedly fitted on the stator shaft and a stator coil wound on the stator core in a star connection.
Preferably, the rotor shaft system further comprises a carbon fiber sheath, and the carbon fiber sheath is fixedly sleeved on the outer wall of the rotor magnetic steel.
Preferably, the rotor shaft is provided with an axial first channel and a radial through second channel, and the motor cylinder is provided with a radial through third channel; the first channel, the second channel, a gap between the rotor shaft system and the inner wall of the motor cylinder and the third channel are communicated in sequence to form a first heat dissipation channel; the first channel, the second channel, the gap between the stator shaft system and the rotor shaft system and the third channel are communicated in sequence to form a second heat dissipation channel.
Preferably, the outer side surface of the front bearing seat is provided with an inwards concave first water cooling channel, and the stator shaft is provided with a second water cooling channel which axially penetrates through the stator shaft; one end of the first water-cooling channel is communicated with the water inlet device, the other end of the first water-cooling channel is communicated with one end of the second water-cooling channel, and the other end of the second water-cooling channel is communicated with the water drainage device; the outer side surface of the front bearing seat is also provided with a water-cooling pressing plate, the inner side surface of the water-cooling pressing plate is attached to the outer side surface of the front bearing seat, and the water-cooling pressing plate is used for pressing and sealing the first water-cooling channel.
Preferably, the first water cooling channel includes a plurality of bent cooling portions and a plurality of connection cooling portions, the plurality of bent cooling portions respectively surround the periphery of the plurality of bearing holes of the front bearing seat along the circumferential direction, and the plurality of connection cooling portions connect two adjacent bent cooling portions.
Preferably, an O-ring is disposed between the outer side surface of the front bearing seat and the inner side surface of the water-cooled pressure plate, and the O-ring is used for preventing the cooling liquid in the first water-cooled channel from leaking.
Preferably, the outer side surface of the rear bearing seat is provided with a plurality of radiating ribs, and the radiating ribs are used for radiating the rear bearing seat.
Preferably, the plurality of heat dissipation ribs are circumferentially distributed along the center of the rear bearing seat.
The motor adopting the technical scheme has the advantages that:
when the synchronous driving device works, the stator winding is electrified to simultaneously drive the rotor magnetic steels of the plurality of rotor shafting positioned on the outer side of the circumferential direction of the stator shafting, and then the rotor shafts of the plurality of rotor shafting are driven to simultaneously rotate under the support of the rotor bearings of the corresponding rotor shafting to complete the working process. In the mode, a plurality of rotor shafting can be driven to rotate simultaneously only by generating corresponding driving magnetic fields on the plurality of rotor shafting through the stator winding by one stator shafting, so that the number of the stator winding of the motor is reduced, and the cost of the motor is reduced. Meanwhile, the driving mode enables a single motor to have a plurality of output shaft ends, can drive a plurality of loads, and can be used for working conditions such as a multistage centrifugal compressor, a multistage centrifugal expander and the like. Moreover, each rotor shaft system has a similar structure with the shaft system of the inner rotor motor, so that a high rotating speed can be achieved; the load of one original rotor shaft system on the rotor bearing is shared by the plurality of rotor shaft systems, so that the service life of the bearing can be greatly prolonged.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic structural view of the section A-A of the present invention.
Fig. 3 is a schematic structural diagram of a stator shaft system.
FIG. 4 is a schematic structural diagram of a stator shaft system in section D-D.
Fig. 5 is a schematic structural diagram of a rotor shaft system.
FIG. 6 is a schematic view of the rotor shaft system at section B-B.
Fig. 7 is a schematic structural diagram of the first heat dissipation channel and the second heat dissipation channel.
Fig. 8 is a schematic structural view of a water-cooling channel.
Fig. 9 and 10 are schematic structural views of the front bearing seat.
Fig. 11 and 12 are schematic structural views of the rear bearing seat.
Fig. 13 is a schematic structural view of a motor cartridge.
Fig. 14 is a structural schematic diagram of a section C-C of the motor cylinder.
Detailed Description
The following describes in detail embodiments of the present invention with reference to the drawings.
Example 1
The motor for simultaneously driving a plurality of rotor shaft systems as shown in fig. 1 and fig. 2 comprises a motor barrel 1, a front bearing seat 2, a rear bearing seat 3, a stator shaft system 4 and a plurality of rotor shaft systems 5; the front bearing pedestal 2 and the rear bearing pedestal 3 are respectively fixed at two ends of the motor barrel 1, and a plurality of rotor shaft systems 5 are distributed outside the stator shaft system 4 along the circumferential direction; the stator shaft system 4 comprises a stator shaft 41 and a stator winding 42, two ends of the stator shaft 41 are respectively fixed on the front bearing seat 2 and the rear bearing seat 3, and the stator winding 42 is fixedly sleeved on the stator shaft 41; the rotor shaft system 5 comprises a rotor shaft 51, rotor bearings 52 and rotor magnetic steel 53, wherein the rotor bearings 52 are respectively sleeved at two ends of the rotor shaft 51 and are respectively positioned in corresponding bearing holes of the front bearing block 2 and the rear bearing block 3; the rotor magnetic steels 53 are fixedly arranged on the rotor shaft 51, and the positions of the rotor magnetic steels 53 of the rotor shaft 51 in the plurality of rotor shaft systems 5 respectively correspond to the magnetic driving positions of the stator windings 42. During operation, the stator winding 42 is energized to simultaneously drive the rotor magnetic steels 53 of the plurality of rotor shafting 5 located at the outer side of the stator shafting 4 in the circumferential direction, and further drive the rotor shafts 51 of the plurality of rotor shafting 5 to simultaneously rotate under the support of the rotor bearings 52 of the corresponding rotor shafting 5, thereby completing the working process. In this way, only one stator shaft system 4 is needed to generate corresponding driving magnetic fields for the plurality of rotor shaft systems 5 through the stator windings 42, so that the plurality of rotor shaft systems 5 can be driven to rotate simultaneously, the number of the stator windings 42 of the motor is reduced, and the cost of the motor is reduced. Meanwhile, the driving mode enables a single motor to have a plurality of output shaft ends, can drive a plurality of loads, and can be used for working conditions such as a multistage centrifugal compressor, a multistage centrifugal expander and the like. Moreover, each rotor shaft system 5 is similar to the shaft system structure of the inner rotor motor, so that high rotating speed can be achieved; the load of one original rotor shafting 5 on the rotor bearing 52 is shared by the plurality of rotor shafting 5, so that the service life of the bearing can be greatly prolonged.
As shown in fig. 2 to 4, the stator winding 42 includes a stator core 43 and a stator coil 44, the stator core 43 is fixedly fitted on the stator shaft 41, and the stator coil 44 is wound on the stator core 43 in a star connection.
As shown in fig. 5 and 6, the rotor shaft system 5 further includes a carbon fiber sheath 54, and the carbon fiber sheath 54 is fixedly sleeved on the outer wall of the rotor magnetic steel 53 so as to prevent the rotor magnetic steel 53 from being damaged.
As shown in fig. 7, the rotor shaft 51 is provided with an axial first passage 61 and a radially penetrating second passage 62, and the motor cartridge 1 is provided with a radially penetrating third passage 63; the first channel 61, the second channel 62, a gap between the rotor shaft system 5 and the inner wall of the motor cylinder 1 and the third channel 63 are communicated in sequence to form a first heat dissipation channel; the first channel 61, the second channel 62, the gap between the stator shaft system 4 and the rotor shaft system 5 and the third channel 63 are communicated in sequence to form a second heat dissipation channel.
As shown in fig. 8, the outer side surface of the front bearing seat 2 is provided with a concave first water cooling channel 21, and the stator shaft 41 is provided with a second water cooling channel 45 which axially penetrates through the stator shaft; one end of the first water-cooling channel 21 is communicated with a water inlet device, the other end of the first water-cooling channel 21 is communicated with one end of the second water-cooling channel 45, and the other end of the second water-cooling channel 45 is communicated with a water drainage device; the outer side surface of the front bearing seat 2 is also provided with a water-cooling pressing plate 22, the inner side surface of the water-cooling pressing plate 22 is attached to the outer side surface of the front bearing seat 2, and the water-cooling pressing plate 22 is used for pressing and sealing the first water-cooling channel 21. The first water-cooling channel 21 and the second water-cooling channel 45 are mainly used for cooling the stator shaft system 4, cooling water enters the first water-cooling channel 21 on the front bearing seat 2 through the water inlet pipe joint and cools the rotor bearing 52 on the front bearing seat 2 along the first water-cooling channel 21; because this end is connected with the load, operating temperature can be higher, can greatly reduced the operating temperature of rotor bearing 52 on front bearing frame 2 through water-cooling, guarantees rotor bearing 52 life-span. The cooling water enters the second water-cooling channel 45 on the stator shaft 41 after leaving the first water-cooling channel 21, takes away the heat of the stator winding 42 and then flows out of the motor from the water outlet pipe joint.
As shown in fig. 9 and 10, the first water cooling channel 21 includes a plurality of bent cooling portions 23 and a plurality of connecting cooling portions 24, the plurality of bent cooling portions 23 respectively surround the peripheries of the plurality of bearing holes of the front bearing block 2 along the circumferential direction to cool and dissipate heat at the rotor bearing 52, and the plurality of connecting cooling portions 24 connect two adjacent bent cooling portions 23.
An O-shaped sealing ring 25 is arranged between the outer side surface of the front bearing seat 2 and the inner side surface of the water-cooling pressing plate 22, and the O-shaped sealing ring 25 is used for preventing cooling liquid in the first water-cooling channel 21 from leaking.
As shown in fig. 11 and 12, a plurality of heat dissipating ribs 31 are provided on the outer surface of the rear bearing housing 3, and the heat dissipating ribs 31 dissipate heat from the rear bearing housing 3. The plurality of heat dissipating ribs 31 are circumferentially distributed along the center of the rear bearing housing 3.
Claims (9)
1. A motor for simultaneously driving a plurality of rotor shaft systems is characterized by comprising a motor barrel (1), a front bearing seat (2), a rear bearing seat (3), a stator shaft system (4) and a plurality of rotor shaft systems (5); the front bearing seat (2) and the rear bearing seat (3) are respectively fixed at two ends of the motor barrel (1), and a plurality of rotor shafting (5) are distributed at the outer side of the stator shafting (4) along the circumferential direction; the stator shaft system (4) comprises a stator shaft (41) and a stator winding (42), two ends of the stator shaft (41) are respectively fixed on the front bearing seat (2) and the rear bearing seat (3), and the stator winding (42) is fixedly sleeved on the stator shaft (41); the rotor shaft system (5) comprises a rotor shaft (51), rotor bearings (52) and rotor magnetic steel (53), wherein the rotor bearings (52) are respectively sleeved at two ends of the rotor shaft (51) and are respectively positioned in corresponding bearing holes of the front bearing seat (2) and the rear bearing seat (3); the rotor magnetic steels (53) are fixedly arranged on the rotor shaft (51), and the positions of the rotor magnetic steels (53) of the rotor shaft (51) in the plurality of rotor shaft systems (5) respectively correspond to the magnetic driving positions of the stator windings (42).
2. An electric machine for simultaneously driving a plurality of rotor shaft systems according to claim 1, characterized in that the stator winding (42) comprises a stator core (43) and a stator coil (44), the stator core (43) is fixedly sleeved on the stator shaft (41), and the stator coil (44) is wound on the stator core (43) in a star connection.
3. The motor for simultaneously driving a plurality of rotor shaft systems is characterized in that the rotor shaft system (5) further comprises a carbon fiber sheath (54), and the carbon fiber sheath (54) is fixedly sleeved on the outer wall of the rotor magnetic steel (53).
4. A machine for simultaneous driving of multiple rotor shaft systems according to claim 1, characterised in that the rotor shaft (51) is provided with a first channel (61) running axially and a second channel (62) running radially through, and that the machine barrel (1) is provided with a third channel (63) running radially through; the first channel (61), the second channel (62), a gap between the rotor shaft system (5) and the inner wall of the motor cylinder (1) and the third channel (63) are communicated in sequence to form a first heat dissipation channel; the first channel (61), the second channel (62), the gap between the stator shaft system (4) and the rotor shaft system (5) and the third channel (63) are communicated in sequence to form a second heat dissipation channel.
5. The motor for simultaneously driving a plurality of rotor shaft systems is characterized in that a concave first water cooling channel (21) is arranged on the outer side surface of the front bearing seat (2), and a second water cooling channel (45) which axially penetrates through the stator shaft (41); one end of the first water-cooling channel (21) is communicated with a water inlet device, the other end of the first water-cooling channel (21) is communicated with one end of the second water-cooling channel (45), and the other end of the second water-cooling channel (45) is communicated with a water drainage device; the outer side surface of the front bearing seat (2) is further provided with a water-cooling pressing plate (22), the inner side surface of the water-cooling pressing plate (22) is attached to the outer side surface of the front bearing seat (2), and the water-cooling pressing plate (22) is used for pressing and sealing the first water-cooling channel (21).
6. The electric machine for simultaneously driving a plurality of rotor shaft systems according to claim 5, wherein the first water cooling channel (21) comprises a plurality of bending cooling portions (23) and a plurality of connecting cooling portions (24), the plurality of bending cooling portions (23) respectively surround the periphery of the plurality of bearing holes of the front bearing seat (2) along the circumferential direction, and the plurality of connecting cooling portions (24) connect two adjacent bending cooling portions (23).
7. The motor for simultaneously driving a plurality of rotor shafting is characterized in that an O-shaped sealing ring (25) is arranged between the outer side surface of the front bearing seat (2) and the inner side surface of the water-cooling pressing plate (22), and the O-shaped sealing ring (25) is used for preventing the cooling liquid in the first water-cooling channel (21) from leaking.
8. The motor for simultaneously driving a plurality of rotor shaft systems according to claim 1, wherein a plurality of heat dissipation ribs (31) are arranged on the outer side surface of the rear bearing seat (3), and the heat dissipation ribs (31) are used for dissipating heat of the rear bearing seat (3).
9. A machine for simultaneously driving a plurality of rotor shaft systems according to claim 8, characterized in that the plurality of heat dissipating ribs (31) are circumferentially distributed along the center of the rear bearing housing (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122175831.0U CN216056656U (en) | 2021-09-09 | 2021-09-09 | Motor for simultaneously driving multiple rotor shafting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122175831.0U CN216056656U (en) | 2021-09-09 | 2021-09-09 | Motor for simultaneously driving multiple rotor shafting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216056656U true CN216056656U (en) | 2022-03-15 |
Family
ID=80536298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122175831.0U Active CN216056656U (en) | 2021-09-09 | 2021-09-09 | Motor for simultaneously driving multiple rotor shafting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216056656U (en) |
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2021
- 2021-09-09 CN CN202122175831.0U patent/CN216056656U/en active Active
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