CN104836366A - Anti-eccentric-wear submersible motor - Google Patents
Anti-eccentric-wear submersible motor Download PDFInfo
- Publication number
- CN104836366A CN104836366A CN201510247854.4A CN201510247854A CN104836366A CN 104836366 A CN104836366 A CN 104836366A CN 201510247854 A CN201510247854 A CN 201510247854A CN 104836366 A CN104836366 A CN 104836366A
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- Prior art keywords
- bearing
- rotating shaft
- eccentric wear
- taper
- thrust
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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
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
-
- 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
- H02K5/132—Submersible electric motors
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The invention discloses an anti-eccentric-wear submersible motor. The anti-eccentric-wear submersible motor comprises a base, a voltage regulating membrane cover, a voltage regulating membrane, a housing, a rotor, a stator and a rotating shaft. One end of the rotating shaft is provided with a first anti-eccentric-wear bearing structure composed of a thrust disc, conical tubular footstep bearings, a first inner bearing seat and a first outer bearing seat. The other end of the rotating shaft is provided with a second anti-eccentric-wear bearing structure composed of a thrust disc, conical tubular footstep bearings, a second inner bearing seat and a second outer bearing seat. Each thrust disc comprises a trapezoidal revolving body, each conical tubular footstep bearing is made of a water lubrication bearing material, and the conical cooperating surface between each conical tubular footstep bearing and each thrust disc has quite good guidance quality. When the motor is horizontally used, radial positioning of the rotating shaft under an axial force effect is ensured, the conical thrust discs and the conical tubular footstep bearings compact each other and are self-centered, it is ensured that no radial displacement is generated during a rotor application process and the rotor and the stator are concentric, and an eccentric wear phenomenon in the motor can be prevented.
Description
Technical field
The present invention relates to submersible motor technical field.
Background technology
Well immersible pump particularly high-lift submersible pump product is the visual plant of deep-well water lift, and underground water is risen to earth's surface, be domestic water, speedily carry out rescue work in mine, industry cools, field irrigation, seawater lift etc. important tool.The external diameter of immersible pump is slender type by the restriction of its installation dimension, but improper at special occasions this immersible pumps of normal vertical use such as such as mine emergencies, needs horizontal use or has certain angle of inclination to use.But the horizontal use of immersible pump can cause pump motor internal rotor owing to producing eccentric wear phenomenon between Action of Gravity Field and guide bearing, water pump rotor after this state for extended periods runs produces eccentric relative to stator, between upper lower magnetic pole, gap is uneven, motor internal forms unbalanced magnetic pull (unilateral magnetic force), make its wearing and tearing of the side of bearing stressed acceleration all the time, produce vibrations and noise, the phase mutual friction of final generation rotor is until motor damage.Such use greatly reduces the useful life of water pump, constrains use occasion and the environment of immersible pump.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of anti-eccentric wear submersible motor, its structure is simple, can prevent eccentric wear phenomenon in motor from producing, ensure that rotor is concentric with stator, horizontal or use under having the service condition at certain angle of inclination, the scope of application of motor can be expanded.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of anti-eccentric wear submersible motor, comprise base, pressure regulation membrane cover, pressure regulator membrane, shell, rotor, stator and rotating shaft, it is characterized in that: described rotating shaft two ends are equipped with one group of anti-eccentric wear bearing arrangement, be respectively the first anti-eccentric wear bearing arrangement and the second anti-eccentric wear bearing arrangement, described first anti-eccentric wear bearing arrangement comprises the thrust collar being sleeved on rotating shaft upper end, taper tubular thrust bearing, first outer bearing carrier and the first inner pedestal, described second anti-eccentric wear bearing arrangement comprises the thrust collar being sleeved on rotating shaft bottom, taper tubular thrust bearing and the second inner pedestal and the second outer bearing carrier, described thrust collar comprises a trapezoidal revolving body, thrust collar upper and lower surface is made to form taper seat, described taper tubular thrust bearing structure is the taper tubular selecting water lubricating bearing material to be formed, described taper tubular thrust bearing respectively with thrust collar, first outer bearing carrier, first inner pedestal, second inner pedestal and the second outer bearing carrier are cone match.
Preferably, described first outer bearing carrier, first inner pedestal, second inner pedestal and the second outer bearing carrier are equipped with the taper concave surface coordinated with taper tubular thrust bearing, described taper tubular thrust bearing is fixed in taper concave surface, seal is provided with between the mating surface of described first outer bearing carrier and rotating shaft, described first inner pedestal is identical with the structure of the second inner pedestal, be equipped with the cylindrical shell coordinated with rotating shaft, and be provided with guide bearing between cylindrical shell and rotating shaft, in the middle part of described second outer bearing carrier, inboard is provided with deep gouge, outside is provided with the deep-slotted chip breaker coordinated with fastening bolt in the middle part of base, described deep gouge is for holding roller end.
Preferably, described taper tubular thrust bearing is all separately fixed in the first outer bearing carrier, the first inner pedestal, the second inner pedestal and the second outer bearing carrier by screw, key connecting is passed through in described thrust collar and rotating shaft, the thrust collar outer surface be rotatably assorted with taper tubular thrust bearing has wearing layer, described wearing layer selects high-abrasive material, and described high-abrasive material is 3Cr13.
Preferably, described water lubricating bearing material is carbon graphite material, and described thrust collar entirety is 3Cr13 material, and described seal is oil sealing.
Preferably, the barrel of described taper tubular thrust bearing along generatrix direction be laid with open slot and open slot towards the miner diameter end of taper tubular thrust bearing, described screw runs through taper tubular thrust bearing position and is arranged on open slot place.
Preferably, the thrust collar of described first anti-eccentric wear bearing arrangement be provided with the retainer nut coordinated with rotating shaft between oil sealing, the described rotating shaft bottom shaft shoulder coordinates with the thrust collar end face of the second anti-eccentric wear bearing arrangement
Preferably, the taper concave surface of described first outer bearing carrier and the second outer bearing carrier is equipped with taper annular groove, the bottom of described second outer bearing carrier is provided with annular boss and is provided with through hole bottom its deep gouge, in the middle part of described base, inboard is provided with the annular inner card cage coordinated with boss, and described fastening bolt coordinates with the screwed hole of inner card cage bottom centre.
The beneficial effect adopting technique scheme to produce is: by thrust collar, taper tubular thrust bearing, the anti-eccentric wear bearing arrangement of outer bearing carrier and inner pedestal composition is arranged on rotating shaft two ends, due to taper tubular thrust bearing and thrust collar cooperatively interact after have good guidance quality, countershaft is also applied with the radial load pointing to axle center while applying axial reaction force, centering is easy under the effect of external force, this anti-eccentric wear bearing arrangement is applied on submersible motor, when the horizontal use of motor, the axial force of rotating shaft finally through thrust collar effect to taper tubular thrust bearing place, both are cone match, taper thrust collar and and taper tubular thrust bearing mutually compress, ensure that motor internal rotor in use radial non-displacement, guarantee that rotor is concentric with stator, taper tubular thrust bearing selects carbon graphite material, thrust collar selects 3Cr13 material, both all can use under water lubrication form, carry out compared with the anti-eccentric wear submersible motor of radial location with utilizing rolling bearing, hermetically-sealed construction without the need to complexity seals bearing place, structure is simple, is particularly applicable to water cooled machine and uses.The present invention has the advantage that structure is simple, can ensure rotating shaft radial location, can ensure that rotor is concentric with stator, horizontal or use under having the service condition at certain angle of inclination, the scope of application of submersible motor can be expanded, decreases the restriction to submersible motor occupation mode.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structure chart of thrust collar in Fig. 1;
Fig. 3 is the structural representation of taper tubular thrust bearing in Fig. 1;
Fig. 4 is the vertical view of Fig. 3;
Fig. 5 is the structure chart of the second outer bearing carrier;
Fig. 6 is the structure chart of common submersible motor;
In figure: 1-base, 2-pressure regulation membrane cover, 3-pressure regulator membrane, 4-shell, 5-rotor, 6-stator, the anti-eccentric wear mechanism of 7-second, 8-thrust collar, 9-taper tubular thrust bearing, 10-rotating shaft, 11-screw, the anti-eccentric wear mechanism of 12-first, 13-guide bearing, 14-oil sealing, 15-retainer nut, 16-inner card cage, 17-boss, 18-deep gouge, 19-through hole, 20-taper annular groove, 21-fastening bolt, 101-first outer bearing carrier, 102-first inner pedestal, 103-second inner pedestal, 104-second outer bearing carrier, 90-open slot.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
The anti-eccentric wear submersible motor of one as Figure 1-5, comprises base 1, pressure regulation membrane cover 2, pressure regulator membrane 3, shell 4, rotor 5, stator 6 and rotating shaft 10, described rotating shaft 10 two ends are equipped with one group of anti-eccentric wear bearing arrangement, and be respectively the first anti-eccentric wear bearing arrangement 12 and the second anti-eccentric wear bearing arrangement 7, described first anti-eccentric wear bearing arrangement 12 comprises the thrust collar 8 being sleeved on rotating shaft 10 upper end, taper tubular thrust bearing 9, first outer bearing carrier 101 and the first inner pedestal 102, described second anti-eccentric wear bearing arrangement 7 comprises the thrust collar 8 being sleeved on rotating shaft 10 bottom, taper tubular thrust bearing 9 and the second inner pedestal 103 and the second outer bearing carrier 104, described thrust collar 8 comprises a trapezoidal revolving body, thrust collar 8 upper and lower surface is made to form taper seat, described taper tubular thrust bearing 9 structure is the taper tubular selecting water lubricating bearing material to be formed, described taper tubular thrust bearing 9 respectively with thrust collar 8, first outer bearing carrier 101, first inner pedestal 102, second inner pedestal 103 and the second outer bearing carrier 104 are cone match, above-mentioned first outer bearing carrier 101, first inner pedestal 102, second inner pedestal 103 and the second outer bearing carrier 104 are all fixed on shell 4 by connector.
Described first outer bearing carrier 101, first inner pedestal 102, second inner pedestal 103 and the second outer bearing carrier 104 are equipped with the taper concave surface coordinated with taper tubular thrust bearing 9, described taper tubular thrust bearing 9 is fixed in taper concave surface, oil sealing 14 is provided with as seal between the mating surface of described first outer bearing carrier 101 and rotating shaft 10, described first inner pedestal 102 is identical with the structure of the second inner pedestal 103, all be equipped with the cylindrical shell coordinated with rotating shaft 10, and between cylindrical shell and rotating shaft, be provided with guide bearing 13, in the middle part of described second outer bearing carrier 104, inboard is provided with deep gouge 18, outside is provided with the deep-slotted chip breaker coordinated with fastening bolt 21 in the middle part of base 1, described deep gouge 18 is for holding rotating shaft 10 end.Taper tubular thrust bearing 9 respectively with thrust collar 8 taper fit, also give the radial load that axle center is pointed in rotating shaft 10 while countershaft 10 applies axial reaction force, make rotating shaft 10 be easier to centering, ensure that rotating shaft 10 is having the radial location under responsive to axial force.
For the ease of maintenance, handling, described taper tubular thrust bearing 9 is all separately fixed in the first outer bearing carrier 101, first inner pedestal 102, second inner pedestal 103 and the second outer bearing carrier 104 by screw 11, described thrust collar 8 passes through key connecting with rotating shaft 10, thrust collar 8 outer surface be rotatably assorted with taper tubular thrust bearing 9 has wearing layer, described wearing layer can select the high-abrasive material of 3C,r13 mono-class, and thrust collar 8 also can make by the overall 3Cr13 of employing material.Taper tubular thrust bearing 9 selects water lubricating bearing material, and what water lubricating bearing material was conventional has polytetrafluoroethylene, carbon graphite, acid bronze alloy etc.The preferred carbon graphite material of taper tubular thrust bearing 9 be because its have that density is low, linear expansion coefficient is little, self-lubricating, corrosion-resistant, resistant to elevated temperatures advantage, and wearing layer selects 3Cr13 material to be because have excellent decay resistance, higher intensity and resistance to wear, its thrust collar 8 made can coordinate taper tubular thrust bearing 9 to utilize water as lubricant medium, reduce the temperature of rotating shaft 10, extend its useful life.
In order to axial displacement occurs the thrust collar 8 of the thrust collar 8 and the second anti-eccentric wear bearing arrangement 7 that prevent the first anti-eccentric wear bearing arrangement 12, the first anti-eccentric wear bearing arrangement 12 thrust collar 8 with retainer nut 15 be set between oil sealing 14 coordinate with rotating shaft 10, thrust collar 8 end face of the rotating shaft 10 bottom shaft shoulder with the second anti-eccentric wear bearing arrangement 7 is coordinated simultaneously, axial limiting is carried out to the thrust collar 8 of the first anti-eccentric wear bearing arrangement 12 and the thrust collar 8 of the second anti-eccentric wear bearing arrangement 7.
The taper concave surface of described first outer bearing carrier 101 and the second outer bearing carrier 104 is equipped with taper annular groove 20, and taper tubular thrust bearing 9 is arranged on the radial location that can ensure rotating shaft 10 in taper annular groove 20 better; The bottom of described second outer bearing carrier 104 is provided with annular boss 17 and is provided with through hole 19 bottom its deep gouge 18, in the middle part of described base 1, inboard is provided with the annular inner card cage 16 coordinated with boss 17, described fastening bolt 21 coordinates with the screwed hole of inner card cage 16 bottom centre, the steadiness that can ensure the second outer bearing carrier 104 is coordinated by boss 17 and inner card cage 16, through hole 19 is conducive to current and enters between thrust collar 8 and taper tubular thrust bearing 9, utilizes water as lubricant medium.
As a kind of preferred structure, the barrel of described taper tubular thrust bearing 9 along generatrix direction be laid with open slot 90 and open slot 90 towards the miner diameter end of taper tubular thrust bearing 9, described screw 11 runs through taper tubular thrust bearing 9 position and is arranged on open slot 9 place, reserved open slot 90 is conducive to current and enters between thrust collar 8 and taper tubular thrust bearing 9, utilizes water as lubricant medium.Utilizing the submersible motor of this anti-eccentric wear bearing arrangement, carrying out compared with the anti-eccentric wear submersible motor of radial location with utilizing rolling bearing, without the need to the hermetically-sealed construction of complexity to the sealing of bearing place, structure is simple, is particularly applicable to water cooled machine and uses.
When the horizontal use of submersible motor, two groups of anti-eccentric wear bearing arrangements are arranged on the two ends of rotating shaft 10 respectively, can by the cone match between thrust collar 8 and taper tubular thrust bearing 9 with good guidance, taper thrust collar 8 and taper tubular thrust bearing 9 compress mutually, make rotating shaft 10 under the effect of external force, be easy to centering, ensure that motor internal rotor in use radial non-displacement, ensure that rotor is concentric with stator; Taper tubular thrust bearing 9 selects carbon graphite material, thrust collar 8 selects 3Cr13 material, and both all can use under water lubrication form, simplify bearing arrangement, expand the scope of application of submersible motor.
In sum, anti-eccentric wear bearing arrangement of the present invention have structure simple, the advantage of rotating shaft without radial deflection can be ensured, the radial location at rotating shaft two ends is also ensure that while carrying axial force, the anti-eccentric wear submersible motor applying this anti-eccentric wear bearing arrangement can prevent eccentric wear phenomenon in motor internal rotor from producing, carrying axial force also ensures that rotor is concentric with stator, horizontal or use under having the service condition at certain angle of inclination, the restriction to submersible motor occupation mode can be decreased.
Claims (7)
1. an anti-eccentric wear submersible motor, it is characterized in that: comprise base (1), pressure regulation membrane cover (2), pressure regulator membrane (3), shell (4), rotor (5), stator (6) and rotating shaft (10), it is characterized in that: described rotating shaft (10) two ends are equipped with one group of anti-eccentric wear bearing arrangement, be respectively the first anti-eccentric wear bearing arrangement (12) and the second anti-eccentric wear bearing arrangement (7), described first anti-eccentric wear bearing arrangement (12) comprises the thrust collar (8) being sleeved on rotating shaft (10) upper end, taper tubular thrust bearing (9), first outer bearing carrier (101) and the first inner pedestal (102), described second anti-eccentric wear bearing arrangement (7) comprises the thrust collar (8) being sleeved on rotating shaft (10) bottom, taper tubular thrust bearing (9) and the second inner pedestal (103) and the second outer bearing carrier (104), described thrust collar (8) comprises a trapezoidal revolving body, thrust collar (8) upper and lower surface is made to form taper seat, described taper tubular thrust bearing (9) structure is the taper tubular selecting water lubricating bearing material to be formed, described taper tubular thrust bearing (9) respectively with thrust collar (8), first outer bearing carrier (101), first inner pedestal (102), second inner pedestal (103) and the second outer bearing carrier (104) are cone match.
2. according to the anti-eccentric wear submersible motor described in claim 1, it is characterized in that: described first outer bearing carrier (101), first inner pedestal (102), second inner pedestal (103) and the second outer bearing carrier (104) are equipped with the taper concave surface coordinated with taper tubular thrust bearing (9), described taper tubular thrust bearing (9) is fixed in taper concave surface, seal is provided with between the mating surface of described first outer bearing carrier (101) and rotating shaft (10), described first inner pedestal (102) is identical with the structure of the second inner pedestal (103), be equipped with the cylindrical shell coordinated with rotating shaft (10), and be provided with guide bearing (13) between cylindrical shell and rotating shaft (10), inboard, described second outer bearing carrier (104) middle part is provided with deep gouge (18), outside is provided with the deep-slotted chip breaker coordinated with base (1) middle part fastening bolt (21), described deep gouge (18) is for holding rotating shaft (10) end.
3. according to the anti-eccentric wear submersible motor described in claim 2, it is characterized in that: described taper tubular thrust bearing (9) is all separately fixed in the first outer bearing carrier (101), the first inner pedestal (102), the second inner pedestal (103) and the second outer bearing carrier (104) by screw (11), key connecting is passed through in described thrust collar (8) and rotating shaft (10), thrust collar (8) outer surface be rotatably assorted with taper tubular thrust bearing (9) has wearing layer, described wearing layer selects high-abrasive material, and described high-abrasive material is 3Cr13.
4. according to the anti-eccentric wear submersible motor described in claim 3, it is characterized in that: described water lubricating bearing material is carbon graphite material, described thrust collar (8) entirety is 3Cr13 material, and described seal is oil sealing (14).
5. anti-eccentric wear submersible motor according to claim 4, it is characterized in that: the barrel of described taper tubular thrust bearing (9) along generatrix direction be laid with open slot (90) and open slot (90) towards the miner diameter end of taper tubular thrust bearing (9), described screw (11) runs through taper tubular thrust bearing (9) position and is arranged on open slot (90) place.
6. anti-eccentric wear submersible motor according to claim 5, it is characterized in that: the thrust collar (8) of described first anti-eccentric wear bearing arrangement (12) be provided with the retainer nut (15) coordinated with rotating shaft (10) between oil sealing (14), described rotating shaft (10) the bottom shaft shoulder coordinates with thrust collar (8) end face of the second anti-eccentric wear bearing arrangement (7).
7. according to the anti-eccentric wear submersible motor described in claim 6, it is characterized in that: the taper concave surface of described first outer bearing carrier (101) and the second outer bearing carrier (104) is equipped with taper annular groove (20), the bottom of described second outer bearing carrier (104) is provided with annular boss (17) and its deep gouge (18) bottom is provided with through hole (19), inboard, described base (1) middle part is provided with the annular inner card cage (16) coordinated with boss (17), and described fastening bolt (21) coordinates with the screwed hole of inner card cage (16) bottom centre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510247854.4A CN104836366B (en) | 2015-05-15 | 2015-05-15 | Anti- eccentric wear submersible motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510247854.4A CN104836366B (en) | 2015-05-15 | 2015-05-15 | Anti- eccentric wear submersible motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104836366A true CN104836366A (en) | 2015-08-12 |
| CN104836366B CN104836366B (en) | 2017-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510247854.4A Expired - Fee Related CN104836366B (en) | 2015-05-15 | 2015-05-15 | Anti- eccentric wear submersible motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104836366B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109286267A (en) * | 2018-12-11 | 2019-01-29 | 广东瑞荣泵业有限公司 | Thread connection Water well submersible motor |
| CN111600418A (en) * | 2020-05-19 | 2020-08-28 | 杨帅军 | Series excited motor |
| CN116388443A (en) * | 2023-06-05 | 2023-07-04 | 深圳市恒然电机有限公司 | Anti-eccentric-wear brushless submersible motor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0954706B1 (en) * | 1997-01-29 | 2005-03-23 | William F. Hackett, Jr. | Thrust bearing assembly |
| CN201475178U (en) * | 2009-03-30 | 2010-05-19 | 郑州大学 | Dismountable guide bearing |
| CN202001325U (en) * | 2010-11-12 | 2011-10-05 | 无锡市锡泵制造有限公司 | Bidirectional submersible axial-flow pump |
| US20120107114A1 (en) * | 2010-11-02 | 2012-05-03 | Baker Hughes Incorporated | Reduced Profile Abrasion Resistant Pump Thrust Bearing |
| CN204597689U (en) * | 2015-05-15 | 2015-08-26 | 河北虹银泵业股份有限公司 | Anti-eccentric wear submersible motor |
-
2015
- 2015-05-15 CN CN201510247854.4A patent/CN104836366B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0954706B1 (en) * | 1997-01-29 | 2005-03-23 | William F. Hackett, Jr. | Thrust bearing assembly |
| CN201475178U (en) * | 2009-03-30 | 2010-05-19 | 郑州大学 | Dismountable guide bearing |
| US20120107114A1 (en) * | 2010-11-02 | 2012-05-03 | Baker Hughes Incorporated | Reduced Profile Abrasion Resistant Pump Thrust Bearing |
| CN202001325U (en) * | 2010-11-12 | 2011-10-05 | 无锡市锡泵制造有限公司 | Bidirectional submersible axial-flow pump |
| CN204597689U (en) * | 2015-05-15 | 2015-08-26 | 河北虹银泵业股份有限公司 | Anti-eccentric wear submersible motor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109286267A (en) * | 2018-12-11 | 2019-01-29 | 广东瑞荣泵业有限公司 | Thread connection Water well submersible motor |
| CN111600418A (en) * | 2020-05-19 | 2020-08-28 | 杨帅军 | Series excited motor |
| CN111600418B (en) * | 2020-05-19 | 2022-09-09 | 珠海天骋科技有限公司 | Series excited motor |
| CN116388443A (en) * | 2023-06-05 | 2023-07-04 | 深圳市恒然电机有限公司 | Anti-eccentric-wear brushless submersible motor |
| CN116388443B (en) * | 2023-06-05 | 2023-08-29 | 深圳市恒然电机有限公司 | Anti-eccentric-wear brushless submersible motor |
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| Publication number | Publication date |
|---|---|
| CN104836366B (en) | 2017-07-04 |
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Granted publication date: 20170704 |