CN114614614A - Brushless hollow shaft motor and laser radar - Google Patents
Brushless hollow shaft motor and laser radar Download PDFInfo
- Publication number
- CN114614614A CN114614614A CN202210359917.5A CN202210359917A CN114614614A CN 114614614 A CN114614614 A CN 114614614A CN 202210359917 A CN202210359917 A CN 202210359917A CN 114614614 A CN114614614 A CN 114614614A
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- Prior art keywords
- hollow shaft
- bearing
- shell
- shaft motor
- brushless
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 229920002379 silicone rubber Polymers 0.000 claims description 8
- 229910000838 Al alloy Inorganic materials 0.000 claims description 6
- 238000005260 corrosion Methods 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 5
- 239000004945 silicone rubber Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- -1 specifically Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Classifications
-
- 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
- H02K5/167—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
- H02K5/1672—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings 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
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
- H02K11/22—Optical devices
-
- 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
-
- 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
- H02K5/06—Cast metal casings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention provides a brushless hollow shaft motor which comprises a shell, a stator and a rotor, wherein the stator and the rotor are arranged in the shell, end covers are respectively arranged at two ends of the shell, the rotor comprises a hollow shaft with openings at two ends, the stator is sleeved on the outer peripheral side of the rotor, and a first bearing and a second bearing are respectively arranged between the outer side walls at two ends of the hollow shaft and the shell; the inner ring and the outer ring of the first bearing are respectively in tight fit with the hollow shaft and the shell; the inner ring of the second bearing is tightly matched with the hollow shaft, an annular gap is arranged between the outer side wall of the outer ring and the casing, an elastic sleeve is arranged in the annular gap, and the elastic sleeve, the second bearing and the casing are in interference fit. The invention solves the problems that the existing hollow motor can not be started normally under the extreme low temperature environment, the motor runs unstably, the current fluctuation is large and the like.
Description
Technical Field
The invention relates to a motor, in particular to a brushless hollow shaft motor applied to a laser radar scanner.
Background
The laser radar is used for surveying real world ground object information and generating three-dimensional point clouds, such as elevation information of buildings, large coordinate information, roads, pipe networks, high-voltage wire networks and the like.
In the early laser radar scanner, a driving system is driven by a solid shaft motor at home and abroad, and the solid shaft motor is adopted for driving, so that a transmission mechanism in the motor is increased, the weight of the motor is increased, the size of the motor is increased, the structure is complex, the noise is high, the manufacturing cost is high, and the acquisition precision effect of the laser radar is not ideal.
Be applied to special environment's such as laser radar scanner cavity motor, laser radar is to the requirement of motor: light in weight (unmanned aerial vehicle requires the weight of motor to be not more than 750g), power is little, high rotational speed (6 thousand or 1.2 ten thousand revolutions per minute), the rotational speed fluctuation is little, the current fluctuation is not more than 0.075A, operating current 2A, the total runout is 0.002, simultaneously the requirement can normally start under the extreme condition of-40 ℃ quota 3A, hollow shaft hole phi 28mm (for installing many focalisation high power camera lens daylighting usefulness), the noise is not more than 40 decibels. At present, the hollow motor which can meet the requirements does not exist at home and abroad, and the existing hollow motor mainly has the following defects:
(1) parts such as a motor shell and the like can shrink and deform in an extreme environment of-40 ℃, so that a bearing on the rotor is extruded, and the rotor cannot be normally started under low rated current;
(2) the concentricity of the shell, the end cover and the hollow shaft assembly of the existing hollow motor is poor, the motor runs not stably enough, the current fluctuation is large, and the reliability is not high.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a brushless hollow shaft motor which solves the problems that the conventional hollow motor cannot be normally started in an extremely low temperature environment, the motor is not stable in operation, the current fluctuation is large and the like.
The technical scheme adopted by the invention for solving the technical problems is as follows: a brushless hollow shaft motor comprises a housing, a stator and a rotor, wherein the stator and the rotor are arranged in the housing, end covers are respectively arranged at two ends of the housing, the rotor comprises a hollow shaft with two open ends, the stator is sleeved on the outer peripheral side of the rotor, and a first bearing and a second bearing are respectively arranged between the outer side walls of two ends of the hollow shaft and the housing; the inner ring and the outer ring of the first bearing are respectively in tight fit with the hollow shaft and the shell; the inner ring of the second bearing is tightly matched with the hollow shaft, an annular gap is arranged between the outer side wall of the outer ring and the casing, an elastic sleeve is arranged in the annular gap, and the elastic sleeve, the second bearing and the casing are in interference fit.
Further, the shell and the end cover are machined in a combined machining mode to form a coaxial hole.
Further, the first bearing and the second bearing are both thin-walled bearings.
Furthermore, the elastic sleeve is a silicone rubber sleeve, and the silicone rubber sleeve has a thickness of 1mm and a width of 4 mm.
Further, the hollow shaft is made of stainless steel, and the shell and the end cover are made of aluminum alloy.
Furthermore, the outer surfaces of the shell and the end cover are provided with anti-corrosion layers.
Furthermore, an adjusting washer is arranged between the outer side end of the first bearing and the shell.
Furthermore, a coded disc mounting seat is further arranged at the outer side end of the first bearing.
This patent still provides a lidar which includes a brushless hollow shaft motor as described above.
The invention has the following positive effects:
1. this patent adopts the mode that sets up the elastic sleeve at the bearing lateral wall, the extrusion to the bearing of the deformation of motor part under having avoided extreme low temperature environment, and then make the cavity motor can be at 40 ℃, normal start under the 3A circumstances of rated current, utilize elastic sleeve's elasticity and toughness simultaneously, make it (rotor and bearing) have fine automatic aligning (under the unsatisfactory condition of axiality after rotor and bearing pressfitting, automatically regulated axiality and straightness that hangs down during the rotation) effect, and then make the motor can steady operation, reliability can be promoted.
2. This patent casing and end cover adopt the mode of combination processing, through carrying out clamping combination location to casing and end cover promptly, make two parts can use same process when adding man-hour, same processing cutter carries out coaxial hole processing, the axiality and the straightness that hangs down of end cover and casing have been guaranteed to the at utmost, assembly error has been avoided, the resistance in operation has been avoided, the motor operation unstability because of the axiality is poor between the two has been solved, the current fluctuation is great scheduling problem, and fine result of use has been gained.
3. The hollow shaft one end of this patent is equipped with the code wheel mount pad that is used for installing the grating, has solved the total technique of beating of grating.
4. Except that the hollow shaft adopts stainless steel, other spare parts such as shell, end cover all adopt aluminum alloy material, this is whole hollow motor's weight alleviates greatly, sets up the anti-corrosion coating on the surface of spare parts such as shell, end cover simultaneously in order to provide its corrosion protection ability.
In a word, the hollow motor that this patent provided simple structure, operation safety and stability, the result of use is better for traditional mode.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. Wherein:
fig. 1 is a schematic structural view of a brushless hollow shaft motor according to the present invention;
FIG. 2 is a schematic view of the cross-sectional structure A-A in FIG. 1;
fig. 3 is a partially enlarged structural diagram of a region B in fig. 2.
For a more clear understanding of the drawings, the following features are listed:
1. the magnetic bearing comprises a stator, 2, a machine shell, 3, a rubber ring, 4, a front end cover, 5, an elastic sleeve, 6, a second bearing, 7, a rotor, 8, a screw, 9, a rear end cover, 10, an adjusting washer, 11, a coded disc mounting seat, 12, a retainer ring, 13, a magnetic ring, 14, a bushing, 15, a first bearing, 16, an annular gap and 17, and a hollow shaft.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the above description of the embodiments is only for assisting understanding of the method of the present invention and the core idea thereof, and is not intended to limit the protection scope of the present invention.
In the present invention, the use of directional terms such as "upper, lower, left, right" generally means upper, lower, left, right as illustrated in the accompanying drawings, unless otherwise specified; "inner and outer" refer to the inner and outer contours of the respective component itself.
Based on the problems that the hollow motor in the prior art cannot be normally started in an extreme low temperature environment of-40 ℃, the motor is not stable in operation, the current fluctuation is large, the safety performance is low and the like, the brushless hollow shaft motor capable of solving the technical problems is provided, and the motor is described in detail through a specific implementation mode and by referring to corresponding figures.
According to one aspect of the present invention, there is provided a brushless hollow shaft motor, suitably referred to in fig. 1 to 2, the present embodiment provides a brushless hollow shaft motor comprising:
the motor comprises a machine shell 2, a stator 1 and a rotor 7 which are arranged inside the machine shell 2, wherein end covers are arranged at two ends of the machine shell 2 and respectively comprise a front end cover 4 and a rear end cover 9, and the end covers and the machine shell 2 are fixed with each other through screws 8;
the rotor 7 comprises a hollow shaft 17 with two open ends and a hollow structure, the stator 1 is sleeved on the outer peripheral side of the rotor 7, and a first bearing 15 and a second bearing 6 are respectively arranged between the outer side walls of the two ends of the hollow shaft 17 and the casing 2; the inner ring and the outer ring of the first bearing 15 are respectively tightly matched with the hollow shaft 17 and the shell 2; the inner ring of the second bearing 6 is tightly matched with the hollow shaft 17, an annular gap 16 is arranged between the outer side wall of the outer ring and the casing, an elastic sleeve 5 is arranged in the annular gap 16, and the elastic sleeve 5, the second bearing 6 and the casing 2 are in interference fit. The first bearing end of the hollow shaft is a positioning end, and the second bearing end is an automatic aligning end. Because the elastic sleeve 5 is arranged on the outer side wall of the second bearing 6, the elastic sleeve 7 can absorb the extrusion deformation of parts in the extreme low-temperature environment, and further the extrusion of the deformation of motor parts in the extreme low-temperature environment on the bearing is avoided, so that the hollow motor can be normally started at the temperature of minus 40 ℃ and the rated current of 3A. In addition, elasticity and toughness of the elastic sleeve are utilized, so that the hollow shaft 17 also has a good automatic aligning effect, the motor can run stably, and safety performance is improved. Furthermore, the elastic sleeve has good buffering and anti-collision functions, and additional shock absorption and noise reduction effects are obtained.
In order to ensure the coaxiality and the verticality of the end cover of the shell, the shell 2 and the end cover are processed in a combined processing mode to form a coaxial hole, compared with the traditional motor end cover and shell processing mode, the coaxiality of all parts is ensured in the combined processing mode, and meanwhile, the requirements that the operation of the hollow motor is stable and the current fluctuation is not more than 0.075A are further met by combining the elastic sleeve 5.
By way of example, the elastic sleeve may be a silicone rubber sleeve, preferably having a thickness of 1mm and a width (axial width rather than radial width) of 4mm, the annular gap having an inner ring and an outer ring spaced apart by a distance of less than or equal to 1mm, and the annular gap having an axial width greater than the width of the silicone rubber sleeve. Of course, the elastic sleeve made of other materials with appropriate hardness can be selected according to actual conditions, but the elastic sleeve is preferably the silicone rubber sleeve disclosed in the patent.
Further, the first bearing 15 and the second bearing 6 are both thin-walled bearings. The inner bore of the hollow shaft with the diameter of 28 is difficult to select a bearing, and the thin-wall bearing with the inner diameter of 40 and the outer diameter of 52 is selected, so that the effects of reducing weight and volume are achieved.
In terms of material usage, the hollow shaft 17 is made of stainless steel, specifically, stainless steel with the model of 2CR13 can be used, except for the hollow shaft 17, other parts such as the shell, the end cover and the like are made of aluminum alloy, specifically, aluminum alloy with the model of 2a12 can be used, so that the total weight of the hollow motor is greatly reduced, and meanwhile, the aluminum alloy parts (especially the outer surfaces of the shell and the end cover) can be subjected to anodic oxidation treatment and painting or are coated with aluminum layers on the surfaces to form an anti-corrosion layer, so that the anti-corrosion capability of the hollow motor is improved.
As a further preferred embodiment, an adjusting washer 10 for adjusting the axial clearance is further provided between the outer end of the first bearing 15 and the casing 2.
In order to finally solve the problem of full-bounce of the grating, a coded disc mounting seat is further arranged at the outer side end of the first bearing 15 (the specific fixing mode can be that a bearing is mounted in an inner hole with the diameter of 52mm of the mounting seat, the inner hole of the bearing is tightly pressed into the outer circle of the hollow shaft in a matching mode, and other mounting and fixing modes except the mode can be adopted according to actual conditions), and the grating can be additionally mounted on the coded disc mounting seat in the later period.
In addition, a rubber ring 3 for sealing is arranged between the front end cover 4 and the shell 2.
The middle of the outer side of the hollow shaft 17 is also provided with a magnetic ring 13 as a rotor component, and two sides of the magnetic ring 13 are also provided with retaining rings 12 for fixing.
As a specific embodiment, the housing includes a bushing 14 disposed at one end (the second bearing end) in the housing, and the annular gap is a gap between an outer sidewall of the outer ring of the second bearing and an inner wall of the bushing 14, and the elastic sleeve is disposed between the second bearing and the bushing.
According to another aspect of the present invention, there is also provided a lidar including a brushless hollow shaft motor as described above.
The above embodiments are only preferred embodiments of the present invention, and it should be understood that the above embodiments are only for assisting understanding of the method and the core idea of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalents and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. The utility model provides a brushless hollow shaft motor, includes casing and inside stator and the rotor thereof, the casing both ends are equipped with end cover, its characterized in that respectively: the rotor comprises a hollow shaft with openings at two ends, the stator is sleeved on the outer peripheral side of the rotor, and a first bearing and a second bearing are respectively arranged between the outer side walls at two ends of the hollow shaft and the casing; the inner ring and the outer ring of the first bearing are respectively in tight fit with the hollow shaft and the shell; the inner ring of the second bearing is tightly matched with the hollow shaft, an annular gap is arranged between the outer side wall of the outer ring and the casing, an elastic sleeve is arranged in the annular gap, and the elastic sleeve, the second bearing and the casing are in interference fit.
2. A brushless hollow shaft motor according to claim 1, wherein: the shell and the end cover are processed in a combined processing mode to form a coaxial hole.
3. A brushless hollow shaft motor according to claim 1, wherein: the elastic sleeve is a silicon rubber sleeve, the thickness of the silicon rubber sleeve is 1mm, and the width of the silicon rubber sleeve is 4 mm.
4. A brushless hollow shaft motor according to claim 1, wherein: the first bearing and the second bearing are both thin-walled bearings.
5. A brushless hollow shaft motor according to claim 1, wherein: the hollow shaft is made of stainless steel, and the shell and the end cover are made of aluminum alloy.
6. A brushless hollow shaft motor according to claim 1, wherein: and the outer surfaces of the shell and the end cover are both provided with anti-corrosion layers.
7. A brushless hollow shaft motor according to claim 1, wherein: an adjusting washer is arranged between the outer side end of the first bearing and the shell.
8. A brushless hollow shaft motor according to claim 1, wherein: and a coded disc mounting seat is further arranged at the outer side end of the first bearing.
9. A lidar, characterized by: a brushless hollow shaft motor comprising a brushless hollow shaft motor according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210359917.5A CN114614614A (en) | 2022-04-06 | 2022-04-06 | Brushless hollow shaft motor and laser radar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210359917.5A CN114614614A (en) | 2022-04-06 | 2022-04-06 | Brushless hollow shaft motor and laser radar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114614614A true CN114614614A (en) | 2022-06-10 |
Family
ID=81869866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210359917.5A Pending CN114614614A (en) | 2022-04-06 | 2022-04-06 | Brushless hollow shaft motor and laser radar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114614614A (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM259391U (en) * | 2004-06-29 | 2005-03-11 | Lin Tung Ching | Shaft device of motor |
| JP2005117770A (en) * | 2003-10-07 | 2005-04-28 | Sanyo Electric Co Ltd | Small-sized motor and its manufacturing method |
| CN202142971U (en) * | 2011-07-14 | 2012-02-08 | 睿能机电有限公司 | Brushless direct current motor with bearing and vibration damping element |
| CN202906645U (en) * | 2012-09-05 | 2013-04-24 | 西安微电机研究所 | Hollow shaft motor |
| CN103259380A (en) * | 2013-05-28 | 2013-08-21 | 南车株洲电力机车研究所有限公司 | Manufacturing method for motor shell body |
| CN203660735U (en) * | 2013-12-23 | 2014-06-18 | 浙江鸿达集团温岭市大丰电机有限公司 | Low-noise motor |
| JP2015208082A (en) * | 2014-04-18 | 2015-11-19 | アスモ株式会社 | Rotary electric machine |
| DE202016004886U1 (en) * | 2016-08-10 | 2016-08-24 | Zhejiang Linix Motor Co., Ltd. | Low vibration electric motor |
| CN106300848A (en) * | 2016-08-30 | 2017-01-04 | 北京精密机电控制设备研究所 | A kind of compound dipping lacquer is without sensor height power to weight ratio permagnetic synchronous motor |
| CN206077184U (en) * | 2016-08-30 | 2017-04-05 | 北京精密机电控制设备研究所 | A kind of compound dipping lacquer is without the high power to weight ratio permagnetic synchronous motor of sensor |
| CN206412859U (en) * | 2017-01-22 | 2017-08-15 | 深圳市速马电机科技有限公司 | The core motor of submersible type |
| CN110601448A (en) * | 2019-09-19 | 2019-12-20 | 黄河科技学院 | Liquid cooling high power density position-free control PMSM motor |
| CN111113476A (en) * | 2019-12-31 | 2020-05-08 | 深圳市优必选科技股份有限公司 | Joint structure and robot |
| DE102019216800A1 (en) * | 2019-10-30 | 2021-05-06 | Robert Bosch Gmbh | Rotor bearing for a rotor shaft of an electrical machine |
| CN113162309A (en) * | 2020-01-23 | 2021-07-23 | 北京明诚技术开发有限公司 | Axle-holding permanent-magnet synchronous variable-frequency motor |
| CN215071926U (en) * | 2021-01-28 | 2021-12-07 | 无锡好力泵业有限公司 | Brushless DC drainage motor with aligning structure |
-
2022
- 2022-04-06 CN CN202210359917.5A patent/CN114614614A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005117770A (en) * | 2003-10-07 | 2005-04-28 | Sanyo Electric Co Ltd | Small-sized motor and its manufacturing method |
| TWM259391U (en) * | 2004-06-29 | 2005-03-11 | Lin Tung Ching | Shaft device of motor |
| CN202142971U (en) * | 2011-07-14 | 2012-02-08 | 睿能机电有限公司 | Brushless direct current motor with bearing and vibration damping element |
| CN202906645U (en) * | 2012-09-05 | 2013-04-24 | 西安微电机研究所 | Hollow shaft motor |
| CN103259380A (en) * | 2013-05-28 | 2013-08-21 | 南车株洲电力机车研究所有限公司 | Manufacturing method for motor shell body |
| CN203660735U (en) * | 2013-12-23 | 2014-06-18 | 浙江鸿达集团温岭市大丰电机有限公司 | Low-noise motor |
| JP2015208082A (en) * | 2014-04-18 | 2015-11-19 | アスモ株式会社 | Rotary electric machine |
| DE202016004886U1 (en) * | 2016-08-10 | 2016-08-24 | Zhejiang Linix Motor Co., Ltd. | Low vibration electric motor |
| CN106300848A (en) * | 2016-08-30 | 2017-01-04 | 北京精密机电控制设备研究所 | A kind of compound dipping lacquer is without sensor height power to weight ratio permagnetic synchronous motor |
| CN206077184U (en) * | 2016-08-30 | 2017-04-05 | 北京精密机电控制设备研究所 | A kind of compound dipping lacquer is without the high power to weight ratio permagnetic synchronous motor of sensor |
| CN206412859U (en) * | 2017-01-22 | 2017-08-15 | 深圳市速马电机科技有限公司 | The core motor of submersible type |
| CN110601448A (en) * | 2019-09-19 | 2019-12-20 | 黄河科技学院 | Liquid cooling high power density position-free control PMSM motor |
| DE102019216800A1 (en) * | 2019-10-30 | 2021-05-06 | Robert Bosch Gmbh | Rotor bearing for a rotor shaft of an electrical machine |
| CN111113476A (en) * | 2019-12-31 | 2020-05-08 | 深圳市优必选科技股份有限公司 | Joint structure and robot |
| CN113162309A (en) * | 2020-01-23 | 2021-07-23 | 北京明诚技术开发有限公司 | Axle-holding permanent-magnet synchronous variable-frequency motor |
| CN215071926U (en) * | 2021-01-28 | 2021-12-07 | 无锡好力泵业有限公司 | Brushless DC drainage motor with aligning structure |
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