CN210536383U - Air cooling structure of high-protection-level permanent magnet servo motor - Google Patents
Air cooling structure of high-protection-level permanent magnet servo motor Download PDFInfo
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- CN210536383U CN210536383U CN201921383692.7U CN201921383692U CN210536383U CN 210536383 U CN210536383 U CN 210536383U CN 201921383692 U CN201921383692 U CN 201921383692U CN 210536383 U CN210536383 U CN 210536383U
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Abstract
The utility model discloses a high protection level permanent magnet servo motor's air-cooled structure has solved how to carry out effective air-cooled problem to permanent magnet servo motor under the high protection level condition. The stator core structure comprises a stator core (1), stator outer-circle axial rib plates (2) are arranged on the outer side face of the stator core (1) at intervals, a motor outer cover shell (19) is arranged between the top faces of the stator outer-circle axial rib plates which are arranged at intervals, a cooling air path (22) is formed between the motor outer cover shell (19), the outer side face of the stator core (1) and the stator outer-circle axial rib plates (2), a cooling air chamber cover body (12) is buckled on the right side face of a BS end cover (7), a cooling air chamber (21) is formed between the cooling air chamber cover body (12), the right side face of the BS end cover (7) and a BS end cover bearing outer cover (9), and a centrifugal fan (13) is connected to. The utility model discloses the structure can make the air directly cool off the stator core, strengthens the cooling effect.
Description
Technical Field
The invention relates to a permanent magnet servo motor, in particular to an air cooling structure of a high-protection-level permanent magnet servo motor.
Background
The structure of a general permanent magnet servo motor is as follows: the rotor iron core is provided with magnetic steel, a coil is embedded in the stator iron core, and the stator iron core is arranged on the solid base; the protection level of the permanent magnet servo motor is higher, so that the task of accurate servo is guaranteed; the cooling modes of the permanent magnet servo motor are generally two, namely an air cooling type and a water cooling type; the air-cooled structure is that a fan is arranged at the non-driving end of the motor, cooling air enters between the stator and the rotor of the motor from the non-driving end and is discharged from the driving end of the motor, and the cooling effect on the surfaces of the motor winding and the rotor is achieved; when the cooling air contains impurities and water vapor, the impurities and the water vapor can enter between the stator and the rotor of the motor along with the cooling air, the insulation grade of the motor is reduced, and the operation reliability of the motor is reduced, so that the servo motor with higher protection grade requirement is not suitable for cooling in an air cooling mode, but is cooled in a water cooling mode; the water cooling mode is characterized in that a cooling water circulation loop is arranged on a base of the servo motor, so that the cooling water circulation loop is isolated from the interior of the motor, thereby preventing pollutants in a refrigerant medium from entering the interior of the motor; however, when the service environment of the servo motor does not have a cooling water circulation loop, how to ensure the protection level of the servo motor and effectively cool the motor is a real problem which needs to be solved urgently on site.
Disclosure of Invention
The invention provides an air cooling structure of a high-protection-level permanent magnet servo motor, which solves the technical problem of how to effectively cool the permanent magnet servo motor under the high-protection-level condition.
The invention solves the technical problems by the following technical scheme:
an air cooling structure of a high protection level permanent magnet servo motor comprises a stator core, wherein an AS end cover is arranged on the left end face of the stator core, a BS end cover is arranged on the right end face of the stator core, an AS end cover bearing is arranged on the AS end cover, a BS end cover bearing is arranged on the BS end cover, a rotor is arranged between the AS end cover bearing and the BS end cover bearing, a BS end cover bearing outer cover is arranged on the outer side face of the BS end cover bearing, stator excircle axial rib plates are arranged on the outer side face of the stator core at intervals, a motor outer cover shell is arranged between the top faces of the stator excircle axial rib plates arranged at intervals, the right end of the motor outer cover shell is in butt joint sealing with the left end face of the BS end cover, a cooling air inlet is formed at the left end of the motor outer cover shell and the left end of the stator core, and a cooling air path is formed between the motor outer cover shell, the, the BS end cover is provided with a cooling wind path air outlet, the right side surface of the BS end cover is buckled with a cooling wind chamber cover body, a cooling wind chamber is formed among the cooling wind chamber cover body, the right side surface of the BS end cover and the BS end cover bearing outer cover, the center of the cooling wind chamber cover body is provided with a cooling wind chamber air outlet, the right side surface of the cooling wind chamber cover body is connected with a centrifugal fan, a fan air inlet of the centrifugal fan is communicated with the cooling wind chamber air outlet, and a fan air outlet is formed in the centrifugal fan.
The outer circle axial rib plate of the stator is radially arranged on the outer side surface of the stator core, and the motor outer cover shell is in a four-prism column shape.
The invention has simple structure and good cooling effect, the base is of a square column cover structure, the stator iron core supports the whole motor, and simultaneously the base is used as a shell of a sealed cavity of the motor, rib plates are adopted at four corners of the base to support the square cover base, the rib plates and the square column cover base form four ventilation channels at four corners, so that air can be directly contacted with the stator iron core, and the structure can lead the air to directly cool the stator iron core and enhance the cooling effect.
Drawings
FIG. 1 is a schematic structural diagram of a high protection level permanent magnet servo motor of the present invention;
FIG. 2 is a diagram of the matching relationship between a stator core 1 and a stator excircle axial rib plate 2;
FIG. 3 is a schematic view of the internal structure of the cooling plenum 21 of the present invention;
FIG. 4 is a schematic view of an air path structure according to the present invention;
FIG. 5 is a schematic illustration of the construction of the inside face of the cooling plenum housing 12 of the present invention;
FIG. 6 is a schematic view of the outer side of the cooling plenum housing 12 of the present invention;
fig. 7 is a schematic structural view of the centrifugal fan 13 of the present invention.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings:
an air cooling structure of a high protection level permanent magnet servo motor comprises a stator core 1, an AS end cover 3 is connected to the left end face of the stator core 1 through an AS end fixing screw 4, a BS end cover 7 is arranged on the right end face of the stator core 1, the AS end is a motor driving end, the BS end is a motor non-driving end, an AS end cover bearing 5 is arranged on the AS end cover 3, a BS end cover bearing 8 is arranged on the BS end cover 7, and a rotor 6 is arranged between the AS end cover bearing 5 and the BS end cover bearing 8, the invention uses the stator core to replace a machine base, a BS end cover bearing outer cover 9 is arranged on the outer side face of the BS end cover bearing 8, so that a closed environment is formed in the motor, stator excircle axial rib plates 2 are arranged on the outer side face of the stator core 1 at intervals, two stator excircle axial rib plates 2 are arranged on the outer top face of the, two stator cylindrical axial rib plates 2 are arranged on the bottom surface of the outer side of a stator core 1 in a splayed manner and are parallel to each other, planes are arranged on the top surface of the outer side of the stator core 1 and the bottom surface of the outer side of the stator core 1, a motor housing top plate is welded on the two stator cylindrical axial rib plates 2 arranged on the top surface of the outer side of the stator core 1 in a splayed manner and are arranged on the planes on the top surface of the outer side of the stator core 1, a motor housing bottom plate and two side plates are welded by the same method to form a motor housing 19, the weight of the whole motor is supported by the two stator cylindrical axial rib plates 2 arranged on the bottom surface of the outer side of the stator core 1 in a splayed manner and are parallel to each other, the right end of the motor housing 19 is in butt joint sealing with the left end of a BS end cover 7, and a cooling air inlet 18 is formed at the left end of the motor housing, a cooling air path 22 is formed among the motor outer cover shell 19, the outer side surface of the stator core 1 and the stator excircle axial rib plate 2, namely four cooling air paths with the cross section close to a triangle are arranged on the outer side surface of the stator core 1 along the motor axial direction, a cooling air path air outlet 11 is arranged on the BS end cover 7, a BS end cover connecting bolt hole 16 and a centrifugal fan connecting bolt hole 15 which are connected with the BS end cover 7 are respectively arranged on the cooling air chamber cover body 12, a cooling air chamber cover body 12 is buckled on the right side surface of the BS end cover 7, a cooling air chamber 21 is formed between the right side surface of the cooling air chamber cover body 12 and the BS end cover bearing outer cover 9, a cooling air chamber air outlet 14 is arranged at the center of the cooling air chamber cover body 12, a centrifugal fan 13 is connected on the right side surface of the cooling air chamber cover body 12, and a fan air inlet 17 of the centrifugal, a fan outlet 20 is provided on the centrifugal fan 13.
The stator excircle axial rib plate 2 is radially arranged on the outer side surface of the stator iron core 1, the motor outer cover shell 19 is in a four-prism column shape, and a cooling air chamber groove 10 is arranged on the outer side surface of the BS end cover bearing outer cover 9 to play a role in enlarging the cooling air chamber space.
When a traditional air cooling motor is designed, the motor is cooled by means of a strong cooling fan, an inner fan and the like, the motor is cooled mainly by cooling a base and a ventilation path formed inside and outside the motor, heat in the motor needs to be conducted to the base from a stator iron core, the cooling speed is low, the cooling effect is poor, and the motor temperature rise is easily overhigh; for the motor which is cooled by the communicated air path formed inside and outside the motor, the protection level is generally low because the inside of the motor is connected with the outside air, and the high protection level is difficult to achieve; the motor with higher protection level is cooled by generally adopting internally closed air-water cooling, the cooling effect of the structure is good, but the space structure of the cooler has large requirement; the motor of the invention takes the stator as the base, the air path is directly arranged on the stator, and the air chamber is arranged outside the end cover, thus the invention not only can seal the interior of the motor, but also can increase the air cooling volume and improve the flow speed of the cooling air, and explore a new way of adopting air cooling for the cooling of the high-protection-level motor.
Claims (2)
1. An air cooling structure of a permanent magnet servo motor with high protection level comprises a stator core (1), wherein an AS end cover (3) is arranged on the left end face of the stator core (1), a BS end cover (7) is arranged on the right end face of the stator core (1), an AS end cover bearing (5) is arranged on the AS end cover (3), a BS end cover bearing (8) is arranged on the BS end cover (7), a rotor (6) is arranged between the AS end cover bearing (5) and the BS end cover bearing (8), and a BS end cover bearing outer cover (9) is arranged on the outer side face of the BS end cover bearing (8), and is characterized in that stator excircle axial rib plates (2) are arranged on the outer side face of the stator core (1) at intervals, a motor outer cover shell (19) is arranged between the top faces of the stator excircle axial rib plates (2) arranged at intervals, and the right end face of the motor outer cover shell (19) is connected and sealed with the left side face of the BS, a cooling air path air inlet (18) is formed at the left end of a motor outer cover shell (19) and the left end of a stator iron core (1), a cooling air path (22) is formed between the motor outer cover shell (19), the outer side surface of the stator iron core (1) and a stator excircle axial rib plate (2), a cooling air path air outlet (11) is arranged on a BS end cover (7), a cooling air chamber cover body (12) is buckled on the right side surface of the BS end cover (7), a cooling air chamber (21) is formed between the right side surface of the cooling air chamber cover body (12) and the BS end cover bearing outer cover (9), a cooling air chamber air outlet (14) is arranged at the center of the cooling air chamber cover body (12), a centrifugal fan (13) is connected on the right side surface of the cooling air chamber cover body (12), and a fan air inlet (17) of the centrifugal fan (13) is communicated with the cooling air chamber air outlet (14), the centrifugal fan (13) is provided with a fan air outlet (20).
2. The air cooling structure of the high-protection-level permanent magnet servo motor according to claim 1, wherein the outer-circle axial rib plates (2) of the stator are radially arranged on the outer side surface of the stator core (1), and the motor outer cover shell (19) is in a four-prism-column shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921383692.7U CN210536383U (en) | 2019-08-24 | 2019-08-24 | Air cooling structure of high-protection-level permanent magnet servo motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921383692.7U CN210536383U (en) | 2019-08-24 | 2019-08-24 | Air cooling structure of high-protection-level permanent magnet servo motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210536383U true CN210536383U (en) | 2020-05-15 |
Family
ID=70602760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921383692.7U Active CN210536383U (en) | 2019-08-24 | 2019-08-24 | Air cooling structure of high-protection-level permanent magnet servo motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210536383U (en) |
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2019
- 2019-08-24 CN CN201921383692.7U patent/CN210536383U/en active Active
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