CN111864964A - Permanent magnet motor protective structure - Google Patents
Permanent magnet motor protective structure Download PDFInfo
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- CN111864964A CN111864964A CN202010780446.6A CN202010780446A CN111864964A CN 111864964 A CN111864964 A CN 111864964A CN 202010780446 A CN202010780446 A CN 202010780446A CN 111864964 A CN111864964 A CN 111864964A
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- motor
- oil seal
- cover
- cover plate
- junction box
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- 230000001681 protective effect Effects 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 63
- 239000003921 oil Substances 0.000 claims description 92
- 239000000498 cooling water Substances 0.000 claims description 15
- 238000009434 installation Methods 0.000 claims description 10
- 239000010687 lubricating oil Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000005494 condensation Effects 0.000 abstract description 5
- 238000009833 condensation Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/124—Sealing of shafts
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
Abstract
The invention discloses a protective structure of a permanent magnet motor, which comprises a motor shell, wherein a front end cover is fixedly connected to a shaft extension end of the motor shell, a through hole is formed in the center of the front end cover, the through hole is matched with an output shaft, a coupler is fixedly connected to the top end of the output shaft, an oil seal cover is sleeved on one side, close to the front end cover, between the front end cover and the coupler, a dustproof water slinger is arranged on one side, close to the oil seal cover, between the oil seal cover and the coupler, and a rear end cover is arranged at a non-shaft extension end of; the diameter of the non-mounting end of the dustproof water slinger is slightly larger than that of the non-mounting end of the oil seal cover, so that rainwater on the surface of the oil seal cover can be smoothly thrown out through the dustproof water slinger, and silt can be effectively prevented from entering the inner surface of the oil seal cover; the motor cavity is provided with the vent valve, so that outside water and water vapor can be effectively prevented from entering the motor cavity by the vent valve, the water vapor in the motor cavity can be discharged, and anhydrous vapor condensation in the motor is ensured.
Description
Technical Field
The invention belongs to the technical field of new energy automobile permanent magnet motors, and particularly relates to a permanent magnet motor protection structure.
Background
The permanent magnet motor is excited by the permanent magnet, so that the structure of the motor is simpler, the processing and assembly cost is reduced, a collecting ring and an electric brush which are easy to cause problems are omitted, wireless interference is avoided, and the running reliability of the motor is improved; the permanent magnet motor does not need exciting current and exciting loss, so that the efficiency and the power density of the motor are improved; the permanent magnet motor adopts a simplified rotor structure, and has a compact internal structure, so that the permanent magnet motor has small volume and light weight. The permanent magnet motor has wide application and is widely used in the computer industry, the automobile industry and the industry and agriculture due to the benefit of the advantages.
In recent years, permanent magnet motors are also reused in new energy automobiles. At present, new energy automobile permanent magnet motor is mostly for confined protective structure, generally constitutes an inclosed cavity through casing, front end housing, rear end housing, water joint, oil blanket isotructure of motor to guarantee the protection level of motor, nevertheless this kind of ordinary protective structure of reality often takes place the inside water of motor when the operation, hardly guarantees the motor not intake for a long time and silt, so its protective structure design needs to improve and upgrade.
Disclosure of Invention
In order to solve the problems existing in the design of the protective structure of the permanent magnet synchronous motor of the electric automobile, the invention provides a protective structure of a permanent magnet motor, which comprises a junction box cover plate, a junction box rear cover plate, a three-phase cable, a waterproof joint, a shaft end oil seal, a first motor rear cover plate, a second motor rear cover plate and a third motor rear cover plate, wherein the permanent magnet motor is guaranteed to be a closed structure; the dustproof water slinger is in interference fit with the output shaft, the diameter of the non-mounting end of the dustproof water slinger is slightly larger than that of the non-mounting end of the oil seal cover, rainwater on the surface of the oil seal cover can be smoothly thrown out through the dustproof water slinger, and silt can be effectively prevented from entering the inner surface of the oil seal cover; set up the breather valve, the breather valve can effectively prevent external water and steam to get into the motor cavity, can discharge the steam of the motor cavity the inside simultaneously, guarantees the inside anhydrous steam condensation of motor.
The purpose of the invention can be realized by the following technical scheme: a permanent magnet motor protection structure comprises a motor shell, wherein a front end cover is fixedly connected to a shaft extension end of the motor shell, a through hole is formed in the center of the front end cover, the through hole is matched with an output shaft, a coupler is fixedly connected to the top end of the output shaft, second bolt holes are uniformly formed in the upper portion of the coupler, and the coupler is connected with the output shaft through a fourth fixing bolt; an oil seal cover is sleeved on one side, close to the front end cover, between the front end cover and the coupler, a dustproof water slinger is arranged on one side, close to the oil seal cover, between the oil seal cover and the coupler, a trademark groove is arranged on one side above the front end cover, a parameter groove is arranged on the other side above the front end cover, and the trademark groove and the parameter groove are symmetrically distributed by taking the output shaft as the center;
the motor comprises a motor shell, and is characterized in that a motor base is arranged on one side of the motor shell, a rear end cover is arranged at the non-shaft extending end of the motor shell, a cooling water pipe connector is arranged on the other side of the motor shell, the cooling water pipe connector and the motor base are symmetrically distributed by taking an output shaft as the center, a junction box is fixedly connected between the cooling water pipe connector and the motor base, the junction box is close to the rear end cover, a vent valve is arranged on one side of the junction box close to the motor base, a junction box cover plate is arranged on one side of the junction box far away from the motor shell, a junction box rear cover plate is arranged on one side of the junction box close to the rear end cover, a third motor rear cover plate is arranged at the central position of the rear end cover close to.
Preferably, the through hole is in clearance fit with the output shaft, the oil seal cover is in clearance fit with the front end cover, the dustproof water slinger ring is in interference fit with the output shaft, and the diameter of the non-mounting end of the dustproof water slinger ring is slightly larger than that of the non-mounting port of the oil seal cover.
Preferably, the front end cover is connected with the motor shell through a first fixing bolt, the junction box rear cover plate is connected with the junction box through a second fixing bolt, the junction box rear cover plate is located on the opposite side of the waterproof joint, the junction box cover plate is connected with the junction box through a seventh fixing bolt, the first motor rear cover plate is connected with the rear end cover through a third fixing bolt, the second motor rear cover plate is connected with the rear end cover through a fifth fixing bolt, the third motor rear cover plate is connected with the rear end cover through a sixth fixing bolt, and second positioning holes are symmetrically formed in the third motor rear cover plate.
Preferably, a plurality of first locating holes are uniformly formed in the oil seal cover, and oil storage chambers are symmetrically arranged on the oil seal cover.
Preferably, the output shaft is sleeved with a shaft end oil seal, and the shaft end oil seal is positioned on the inner side of the oil seal cover.
Preferably, a waterproof joint is arranged at the upper end of the junction box, and a three-phase cable is fixedly connected to the inner side of the waterproof joint.
Preferably, a second motor rear cover plate is arranged at a position, close to the junction box, of the lower side of the rear end cover, a first motor rear cover plate is arranged at a position, corresponding to the cooling water pipe joint, of the lower side of the rear end cover, and a third motor rear cover plate is arranged at the central position of the first motor rear cover plate.
Preferably, the motor base is provided with a plurality of first bolt holes, and the rear end cover is connected with the motor shell through an eighth fixing bolt.
Preferably, the protection steps of the protection structure of the permanent magnet motor are as follows:
firstly, fixing the position of a permanent magnet motor through a first bolt hole on a motor base, and connecting a first motor rear cover plate, a second motor rear cover plate and a third motor rear cover plate with a rear end cover through a third fixing bolt, a fifth fixing bolt and a sixth fixing bolt respectively, wherein the junction box rear cover plate is connected with a junction box through a second fixing bolt;
step two, sequentially installing a shaft end oil seal, an oil seal cover and a dustproof water slinger, wherein the oil seal cover is matched with the front end cover through a spigot, lubricating oil is added into an oil storage chamber arranged on the oil seal cover, the dustproof water slinger is in interference fit with an output shaft, and the diameter of the non-installation end of the dustproof water slinger is slightly larger than that of the non-installation end of the oil seal cover;
thirdly, a power supply of the permanent magnet motor is switched on, silt can be effectively prevented from entering the inner surface of the oil seal cover through the combination of the oil seal cover and the dustproof water slinging ring, and rainwater on the surface of the oil seal cover can be thrown out through the dustproof water slinging ring when the surface of the oil seal cover is splashed into the rainwater;
and step four, in the working process of the permanent magnet motor, the vent valve can effectively prevent rainwater or water vapor from entering the motor cavity, and meanwhile, the water vapor in the motor cavity is discharged under the working condition of the permanent magnet motor, so that the aim of condensing anhydrous vapor in the motor is fulfilled.
The invention has the beneficial effects that:
1. according to the invention, the junction box cover plate, the junction box rear cover plate, the three-phase cable, the waterproof joint, the shaft end oil seal, the first motor rear cover plate, the second motor rear cover plate and the third motor rear cover plate ensure that the permanent magnet motor is of a closed structure, the oil seal cover and the dustproof water slinging ring form a rain-proof water and sediment structure of the motor, the oil seal cover is matched with the front end cover through the seam allowance, and the oil seal cover is internally provided with the oil storage chamber to ensure that a certain amount of grease is stored between the oil seal cover and the output shaft so as to ensure the lubrication of the shaft;
2. according to the invention, the dustproof water slinger is in interference fit with the output shaft, and the diameter of the non-mounting end of the dustproof water slinger is slightly larger than that of the non-mounting end of the oil seal cover, so that rainwater on the surface of the oil seal cover can be smoothly thrown out through the dustproof water slinger, and silt can be effectively prevented from entering the inner surface of the oil seal cover;
3. the motor cavity is provided with the vent valve, so that outside water and water vapor can be effectively prevented from entering the motor cavity by the vent valve, the water vapor in the motor cavity can be discharged, and anhydrous vapor condensation in the motor is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a front view of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic bottom view of the present invention;
FIG. 4 is a schematic view of the oil seal cover of the present invention;
FIG. 5 is a right side sectional view at C-C of the front view of the present invention;
fig. 6 is a schematic structural view of a dustproof water slinger of the present invention.
The following drawings: 1. a motor housing; 2. a front end cover; 201. a first fixing bolt; 3. an output shaft; 4. a three-phase cable; 5. a waterproof joint; 6. a junction box; 601. a junction box rear cover plate; 602. a second fixing bolt; 7. a vent valve; 8. a motor base; 801. a first bolt hole; 9. a first motor rear cover plate; 901. a third fixing bolt; 10. a rear end cap; 11. shaft end oil seal; 12. sealing the oil cover; 1201. a first positioning hole; 13. a dustproof water throwing ring; 14. an oil storage chamber; 15. a cooling water pipe joint; 16. a trademark groove; 17. a parameter groove; 18. a coupling; 1801. a fourth fixing bolt; 1802. a second bolt hole; 19. a second motor rear cover plate; 1901. a fifth fixing bolt; 20. a third motor rear cover plate; 2001. a sixth fixing bolt; 2002. a second positioning hole; 21. a junction box cover plate; 2101. a seventh fixing bolt; 22. and an eighth fixing bolt.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-6, a protection structure for a permanent magnet motor includes a motor housing 1, a front end cover 2 is fixedly connected to an upper side of the motor housing 1, a through hole is formed in a center position of the front end cover 2, the through hole is matched with an output shaft 3, a coupler 18 is fixedly connected to a top end of the output shaft 3, second bolt holes 1802 are uniformly formed above the coupler 18, and the coupler 18 is connected to the output shaft 3 through a fourth fixing bolt 1801; an oil seal cover 12 is sleeved on one side, close to the front end cover 2, between the front end cover 2 and the coupler 18, a dustproof water slinger 13 is arranged on one side, close to the oil seal cover 12, between the oil seal cover 12 and the coupler 18, a trademark groove 16 is arranged on one side above the front end cover 2, a parameter groove 17 is arranged on the other side above the front end cover 2, and the trademark groove 16 and the parameter groove 17 are symmetrically distributed by taking the output shaft 3 as a center;
a motor base 8 is arranged on one side of the motor shell 1, a rear end cover 10 is arranged below the motor shell 1, the other side of the motor shell 1 is provided with a cooling water pipe joint 15, the cooling water pipe joint 15 and the motor base 8 are symmetrically distributed by taking the output shaft 3 as the center, a junction box 6 is fixedly connected between the cooling water pipe joint 15 and the motor base 8, the junction box 6 is close to the rear end cover 10, a breather valve 7 is arranged on one side of the junction box 6 close to the motor base 8, a junction box cover plate 21 is arranged on one side of the junction box 6 far away from the motor shell 1, a junction box rear cover plate 601 is arranged on one side of the junction box 6 close to the rear end cover 10, a third motor rear cover plate 20 is arranged at the center of the rear end cover 10, a second motor rear cover plate 19 is arranged at a position, close to the junction box 6, of the rear end cover 10, and a first motor rear cover plate 9 is arranged at a position, corresponding to the cooling water pipe joint 15, of the lower side of the rear end cover 10.
Further, the through hole is in clearance fit with the output shaft 3, the oil seal cover 12 is in clearance fit with the front end cover 2, the dustproof water slinger 13 is in interference fit with the output shaft 3, and the diameter of the non-installation end of the dustproof water slinger 13 is slightly larger than that of the non-installation end of the oil seal cover 12.
Further, the front end cover 2 is connected with the motor housing 1 through a first fixing bolt 201, the junction box rear cover plate 601 is connected with the junction box 6 through a second fixing bolt 602, the junction box rear cover plate 601 is located on the opposite side of the waterproof joint 5, the junction box cover plate 21 is connected with the junction box 6 through a seventh fixing bolt 2101, the first motor rear cover plate 9 is connected with the rear end cover 10 through a third fixing bolt 901, the second motor rear cover plate 19 is connected with the rear end cover 10 through a fifth fixing bolt 1901, the third motor rear cover plate 20 is connected with the rear end cover 10 through a sixth fixing bolt 2001, and second positioning holes 2002 are symmetrically formed in the third motor rear cover plate 20.
Further, a plurality of first positioning holes 1201 are uniformly formed in the oil seal cover 12, and oil storage chambers 14 are symmetrically arranged on the oil seal cover 12.
Further, the output shaft 3 is sleeved with a shaft end oil seal 11, and the shaft end oil seal 11 is located on the inner side of the oil seal cover 12.
Further, a junction box cover plate 21 is arranged on one side, away from the motor shell 1, of the junction box 6, a waterproof connector 5 is arranged at the upper end of the junction box 6, and a three-phase cable 4 is fixedly connected to the inner side of the waterproof connector 5.
Further, a second motor rear cover plate 19 is arranged at a position, close to the junction box 6, on the lower side of the rear end cover 10, a first motor rear cover plate 9 is arranged at a position, corresponding to the cooling water pipe joint 15, on the lower side of the rear end cover 10, and a third motor rear cover plate 20 is arranged at the center position of the first motor rear cover plate 9.
Further, a plurality of first bolt holes 801 are formed in the motor base 8, and the rear end cover 10 is connected with the motor housing 1 through eighth fixing bolts 22.
Further, the protection steps of the protection structure of the permanent magnet motor are as follows:
firstly, fixing the position of a permanent magnet motor through a first bolt hole 801 on a motor base 8, respectively connecting a first motor rear cover plate 9, a second motor rear cover plate 19 and a third motor rear cover plate 20 with a rear end cover 10 through a third fixing bolt 901, a fifth fixing bolt 1901 and a sixth fixing bolt 2001, and connecting a junction box rear cover plate 601 with a junction box 6 through a second fixing bolt 602;
step two, sequentially installing a shaft end oil seal 11, an oil seal cover 12 and a dustproof water slinger 13, wherein the oil seal cover 12 is matched with the front end cover 2 through a spigot, lubricating oil is added into an oil storage chamber 14 arranged on the oil seal cover 12, the dustproof water slinger 13 is in interference fit with the output shaft 3, and the diameter of the non-installation end of the dustproof water slinger 13 is slightly larger than that of the non-installation end of the oil seal cover 12;
thirdly, a power supply of the permanent magnet motor is switched on, silt can be effectively prevented from entering the inner surface of the oil seal cover 12 through the combination of the oil seal cover 12 and the dustproof water slinger 13, and when rainwater is splashed to the surface of the oil seal cover 12, the rainwater on the surface of the oil seal cover 12 can be thrown out through the dustproof water slinger 13;
and step four, in the working process of the permanent magnet motor, the vent valve 7 can effectively prevent rainwater or water vapor from entering the motor cavity, and meanwhile, the water vapor in the motor cavity is discharged under the working condition of the permanent magnet motor, so that the aim of condensing anhydrous vapor in the motor is fulfilled.
The working principle of the invention is as follows: a sealing structure is formed by the junction box cover plate 21, the junction box rear cover plate 601, the three-phase cable 4, the waterproof connector 5, the shaft end oil seal 11, the first motor rear cover plate 9, the second motor rear cover plate 19 and the third motor rear cover plate 20, so that the protection performance of the permanent magnet motor is guaranteed, the oil seal cover 12 and the dustproof water slinging ring 13 form a rain-proof water and sediment structure of the motor, the oil seal cover 12 is matched with the front end cover 2 through a seam allowance, and an oil storage chamber 14 is arranged in the oil seal cover 12, so that a certain amount of grease is stored between the oil seal cover 12 and the output shaft 3 to guarantee the lubrication of the shaft end oil seal 11;
the dustproof water slinger 13 is in interference fit with the output shaft 3, and the diameter of the non-mounting end of the dustproof water slinger 13 is slightly larger than that of the non-mounting end of the oil seal cover 12, so that rainwater on the surface of the oil seal cover 12 can be smoothly thrown out through the dustproof water slinger 13, and silt can be effectively prevented from entering the inner surface of the oil seal cover 12; the junction box 6 is provided with the vent valve 7, the vent valve 7 can effectively prevent outside water and water vapor from entering the motor cavity, and meanwhile, water vapor in the motor cavity can be discharged, so that anhydrous vapor condensation in the motor is ensured;
through the design of the oil seal cover 12, the dustproof water throwing ring 13 and the ventilation valve 7, silt and water can be prevented from entering the permanent magnet motor, water vapor in a cavity of the permanent magnet motor can be discharged simultaneously, and anhydrous vapor condensation in the motor is guaranteed.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (9)
1. The protective structure of the permanent magnet motor is characterized by comprising a motor shell (1), wherein a front end cover (2) is fixedly connected to the upper side of the motor shell (1), a through hole is formed in the center of the front end cover (2), the through hole is matched with an output shaft (3), a coupler (18) is fixedly connected to the top end of the output shaft (3), second bolt holes (1802) are uniformly formed in the upper portion of the coupler (18), and the coupler (18) is connected with the output shaft (3) through a fourth fixing bolt (1801); an oil seal cover (12) is sleeved on one side, close to the front end cover (2), between the front end cover (2) and the coupler (18), a dustproof water slinger (13) is arranged on one side, close to the oil seal cover (12), between the oil seal cover (12) and the coupler (18), a trademark groove (16) is arranged on one side above the front end cover (2), a parameter groove (17) is arranged on the other side above the front end cover (2), and the trademark groove (16) and the parameter groove (17) are symmetrically distributed by taking the output shaft (3) as a center;
a motor base (8) is arranged on one side of the motor shell (1), a rear end cover (10) is arranged below the motor shell (1), a cooling water pipe connector (15) is arranged on the other side of the motor shell (1), the cooling water pipe connector (15) and the motor base (8) are symmetrically distributed by taking the output shaft (3) as the center, a junction box (6) is fixedly connected between the cooling water pipe connector (15) and the motor base (8), the junction box (6) is positioned close to the rear end cover (10), a vent valve (7) is arranged on one side of the junction box (6) close to the motor base (8), a junction box cover plate (21) is arranged on one side of the junction box (6) far away from the motor shell (1), a junction box rear cover plate (601) is arranged on one side of the junction box (6) close to the rear end cover (10), and a third motor rear cover plate (20), and a second motor rear cover plate (19) is arranged at the position, close to the junction box (6), of the rear end cover (10), and a first motor rear cover plate (9) is arranged at the position, corresponding to the cooling water pipe joint (15), of the lower side of the rear end cover (10).
2. The protection structure of the permanent magnet motor according to claim 1, wherein the through hole is in clearance fit with the output shaft (3), the oil seal cover (12) is in clearance fit with the front end cover (2), the dustproof water slinger (13) is in interference fit with the output shaft (3), and the diameter of the non-installation end of the dustproof water slinger (13) is slightly larger than that of the non-installation end of the oil seal cover (12).
3. A permanent magnet machine protection structure according to claim 1, characterized in that the front end cover (2) is connected with the machine shell (1) through a first fixing bolt (201), the junction box rear cover plate (601) is connected with the junction box (6) through a second fixing bolt (602), the junction box rear cover plate (601) is positioned on the opposite side of the waterproof joint (5), the junction box cover plate (21) is connected with the junction box (6) through a seventh fixing bolt (2101), the first motor rear cover plate (9) is connected with the rear end cover (10) through a third fixing bolt (901), the second motor rear cover plate (19) is connected with the rear end cover (10) through a fifth fixing bolt (1901), the third motor rear cover plate (20) is connected with the rear end cover (10) through a sixth fixing bolt (2001), and a second positioning hole (2002) is symmetrically formed in the third motor rear cover plate (20).
4. The protection structure of the permanent magnet motor according to claim 1, wherein a plurality of first positioning holes (1201) are uniformly formed in the oil seal cover (12), and oil storage chambers (14) are symmetrically arranged on the oil seal cover (12).
5. The protection structure of the permanent magnet motor according to claim 1, wherein the output shaft (3) is sleeved with a shaft end oil seal (11), and the shaft end oil seal (11) is located on the inner side of the oil seal cover (12).
6. The protection structure of the permanent magnet motor according to claim 1, wherein a terminal box cover plate (21) is arranged on one side of the terminal box (6) far away from the motor shell (1), a waterproof joint (5) is arranged at the upper end of the terminal box (6), and a three-phase cable (4) is fixedly connected to the inner side of the waterproof joint (5).
7. The permanent magnet motor protection structure according to claim 1, wherein a second motor rear cover plate (19) is arranged on the lower side of the rear end cover (10) close to the junction box (6), a first motor rear cover plate (9) is arranged on the lower side of the rear end cover (10) corresponding to the cooling water pipe joint (15), and a third motor rear cover plate (20) is arranged in the center of the first motor rear cover plate (9).
8. The permanent magnet motor protection structure according to claim 1, wherein a plurality of first bolt holes (801) are formed in the motor base (8), and the rear end cover (10) is connected with the motor shell (1) through eighth fixing bolts (22).
9. The permanent magnet motor protective structure according to claim 1, characterized in that the protective steps of the permanent magnet motor protective structure are as follows:
firstly, fixing the position of a permanent magnet motor through a first bolt hole (801) on a motor base (8), respectively connecting a first motor rear cover plate (9), a second motor rear cover plate (19) and a third motor rear cover plate (20) with a rear end cover (10) through a third fixing bolt (901), a fifth fixing bolt (1901) and a sixth fixing bolt (2001), and connecting a junction box rear cover plate (601) with a junction box (6) through a second fixing bolt (602);
step two, sequentially installing a shaft end oil seal (11), an oil seal cover (12) and a dustproof water slinger (13), matching the oil seal cover (12) with the front end cover (2) through a spigot, simultaneously adding lubricating oil into an oil storage chamber (14) arranged on the oil seal cover (12), wherein the dustproof water slinger (13) is in interference fit with the output shaft (3), and the diameter of the non-installation end of the dustproof water slinger (13) is slightly larger than that of the non-installation end of the oil seal cover (12);
thirdly, a power supply of the permanent magnet motor is switched on, the combination of the oil seal cover (12) and the dustproof water slinging ring (13) can effectively prevent silt from entering the inner surface of the oil seal cover (12), and when rainwater is splashed to the surface of the oil seal cover (12), the dustproof water slinging ring (13) can throw the rainwater on the surface of the oil seal cover (12) out;
and step four, in the working process of the permanent magnet motor, the vent valve (7) can effectively prevent rainwater or water vapor from entering the motor cavity, and meanwhile, the water vapor in the motor cavity is discharged under the working condition of the permanent magnet motor, so that the aim of condensing anhydrous vapor in the motor is fulfilled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010780446.6A CN111864964A (en) | 2020-08-04 | 2020-08-04 | Permanent magnet motor protective structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010780446.6A CN111864964A (en) | 2020-08-04 | 2020-08-04 | Permanent magnet motor protective structure |
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| CN111864964A true CN111864964A (en) | 2020-10-30 |
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| CN202010780446.6A Pending CN111864964A (en) | 2020-08-04 | 2020-08-04 | Permanent magnet motor protective structure |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130021255A (en) * | 2011-08-22 | 2013-03-05 | 현대중공업 주식회사 | Power supplying structure for motor of on line electric vehicle |
| CN206135610U (en) * | 2016-08-31 | 2017-04-26 | 广州精传科技有限公司 | Inside antisweat structure of motor |
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| CN207853719U (en) * | 2017-12-14 | 2018-09-11 | 大连日牵电机有限公司 | A kind of 45 tons of hybrid power mine truck magneto alternators |
| CN208369357U (en) * | 2018-07-05 | 2019-01-11 | 无锡东元电机有限公司 | A kind of bowl-shape throw rijng of water proof type |
| CN110611392A (en) * | 2019-10-21 | 2019-12-24 | 苏州绿控传动科技股份有限公司 | Motor output waterproof construction |
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2020
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|---|---|---|---|---|
| KR20130021255A (en) * | 2011-08-22 | 2013-03-05 | 현대중공업 주식회사 | Power supplying structure for motor of on line electric vehicle |
| CN206135610U (en) * | 2016-08-31 | 2017-04-26 | 广州精传科技有限公司 | Inside antisweat structure of motor |
| CN206878595U (en) * | 2017-04-21 | 2018-01-12 | 郑州宇通客车股份有限公司 | Motor and the new energy vehicle using the motor |
| CN107231066A (en) * | 2017-07-31 | 2017-10-03 | 宁德时代电机科技有限公司 | A kind of high power density lightweight concentratred winding water-cooled outer rotor permagnetic synchronous motor |
| CN207853719U (en) * | 2017-12-14 | 2018-09-11 | 大连日牵电机有限公司 | A kind of 45 tons of hybrid power mine truck magneto alternators |
| CN108429384A (en) * | 2018-03-26 | 2018-08-21 | 精进电动科技股份有限公司 | The sealing structure at motor-shaft extending end |
| CN208369357U (en) * | 2018-07-05 | 2019-01-11 | 无锡东元电机有限公司 | A kind of bowl-shape throw rijng of water proof type |
| CN110611392A (en) * | 2019-10-21 | 2019-12-24 | 苏州绿控传动科技股份有限公司 | Motor output waterproof construction |
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Application publication date: 20201030 |