CN205847028U - The extremely low electric motor with speed of difference - Google Patents
The extremely low electric motor with speed of difference Download PDFInfo
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- CN205847028U CN205847028U CN201620663210.3U CN201620663210U CN205847028U CN 205847028 U CN205847028 U CN 205847028U CN 201620663210 U CN201620663210 U CN 201620663210U CN 205847028 U CN205847028 U CN 205847028U
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- stator
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Abstract
The utility model discloses the extremely low electric motor with speed of a kind of difference, this motor includes rotor, stator and rotating shaft, described rotor includes rotor core, rotor windings, collector ring and without latitude fixing band, described rotor windings by without latitude fixing band colligation at the outer round surface of rotor core, described fixing band without latitude is processed by epoxy insulation and is solidificated in rotor core, described rotor windings is connected on collector ring by connecting line, three-phase carbon brush depended on pressure contact collector ring makes both turn on, and described collector ring contacts with three-phase carbon brush and introduced in rotor windings by three-phase current；Described stator includes that stator core and stator winding, described rotor windings and stator winding are three-phase alternating current winding, and the number of pole-pairs of described rotor windings is more than the number of pole-pairs of stator winding.This utility model motor synthesis rotating speed is stator and rotor rotating speed differences, reaches the purpose of rotating shaft reduction of speed.
Description
Technical field
This utility model belongs to Electric Traction field, is specifically related to the extremely low electric motor with speed of a kind of difference.
Background technology
AC low-speed motor is in the case of stator diameter size constancy, frequency are constant, and lowering synchronous rotational speed can only change
Pole-changing logarithm, and when motor stator number of pole-pairs is less, it may appear that pulsating torque.
Motor speed n=60f/p, wherein: f is frequency, p is number of pole-pairs.Particularly rotating speed only have several revs/min or tens turns/
In the case of Fen, although by increase number of pole-pairs be can drop slow-revving, but due to the restriction of motor inner ring diameter, such as frequency
50Hz electromotor diameter 1000mm, motor number of pole-pairs can not more than 300, motor synchronous rotating speed can not less than 10 turns/
Point.
The constant alternating current generator of frequency is by slowspeed machine to be made, and number of poles is inevitable a lot, due to motor installation dimension and matter
The requirement of amount, so necessary restrictions motor diameter, such number of slots can not infinitely increase, and power frequency slowspeed machine is difficult to system
Make.
Summary of the invention
For problems of the prior art, this utility model provides the one extremely low electric motor with speed of difference, makes the pole of motor
Number can be reduced to the number of poles that favourable motor manufactures, and can reach the slow-speed of revolution when power frequency is powered.
For achieving the above object, this utility model is by the following technical solutions:
The extremely low electric motor with speed of a kind of difference, this motor include rotor, stator and rotating shaft, described rotor include rotor core,
Rotor windings, collector ring and without latitude fixing band,
Described rotor windings by without latitude fixing band colligation at the outer round surface of rotor core, described fixing band without latitude passes through
Epoxy insulation processes and is solidificated in rotor core, and described rotor windings is connected on collector ring by connecting line, and three-phase carbon brush leans on
Pressure contact collector ring makes both turn on, and described collector ring contacts with three-phase carbon brush and introduced in rotor windings by three-phase current；
Described stator include stator core and stator winding, described rotor windings and stator winding be three-phase alternating current around
Group, the number of pole-pairs of described rotor windings is more than the number of pole-pairs of stator winding.
The number of pole-pairs more than the number of pole-pairs of stator winding 1 or 2 of described rotor windings.
In order to reduce motor speed, the number of pole-pairs of described rotor windings is not less than 51, the number of pole-pairs of described stator winding
Not less than 50.
Described rotor windings is Distributed Winding or concentratred winding.
For reducing motor torque ripple, described rotor core does not set slot for winding；Described rotor windings is slotless winding, turns
Sub-winding directly by without latitude fixing band colligation at the outer round surface of rotor core.
Described stator winding is Distributed Winding or concentratred winding.
Described stator winding is for there being groove winding.
Described rotor windings includes A phase coil, B phase coil and C phase coil, described A phase coil, B phase coil and C phase coil
It is sequentially arranged in rotor core outer surface in order.
Compared with prior art, the beneficial effects of the utility model are:
This utility model makes motor speed lower in the case of frequency of supply is constant, can be real by difference pole motor
Existing.
Accompanying drawing explanation
Fig. 1 is the sectional view of structure of the present utility model.
Fig. 2 is the structural representation of this utility model rotor.
Fig. 3 is the arrangement architecture schematic diagram of this utility model rotor winding.
Fig. 4 is the enlarged drawing of Fig. 3.
Detailed description of the invention
Below in conjunction with implementation example and accompanying drawing, the utility model is described in further detail, but it is new not limit this practicality with this
The protection domain of type.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the present embodiment extremely low electric motor with speed of difference, this motor includes rotor 1, stator 7
With rotating shaft 2, described rotor 1 includes rotor core 101, rotor windings 102, collector ring 103 and without latitude fixing band 104,
Described rotor windings 102 by without latitude fixing band 104 colligation at the outer round surface of rotor core 101, described without latitude
Fixing band 104 is processed by epoxy insulation and is solidificated in rotor core 101, and described rotor windings 102 is connected to by connecting line 4
On collector ring 103, described collector ring 103 contacts with three-phase carbon brush 12 and is introduced in rotor windings 102 by three-phase current；
Described stator 7 includes stator core 701 and stator winding 702, and described rotor windings 102 and stator winding 702 are equal
For three-phase alternating current winding, the number of pole-pairs of described rotor windings 102 is more than the number of pole-pairs of stator winding 702, described rotor windings 102
Number of pole-pairs more than the number of pole-pairs of stator winding 702 1 or 2.
As preferably, the number of pole-pairs of the present embodiment rotor winding 102 is not less than 51, described stator winding 702 the most right
Number is not less than 50, and described rotor windings 102 is Distributed Winding or concentratred winding.
As further preferably, the present embodiment rotor iron core 101 does not set slot for winding；Described rotor windings 102 is slotless
Winding, described stator winding 702 is Distributed Winding or concentratred winding, described stator winding 702 for there being groove winding, described rotor around
Group includes A phase coil 8, B phase coil 9 and C phase coil 10, and described A phase coil 8, B phase coil 9 and C phase coil 10 are the most successively
Being arranged in rotor core 101 outer surface, described rotor core 101 is made by stalloy.
In the present embodiment, stator leads to the three-phase alternating current of 50 or 60Hz；Three-phase alternating current winding magnetic field rotating speed is n=60f/p；Its
Middle n-is rotational speed of magnetic field, f-ac power frequency, p-winding number of pole-pairs；When stator poles logarithm is 50, and rotor pole logarithm is 51
Time, after stator and rotor lead to 50Hz three phase sine alternating current, so stator field rotating speed is 60 revs/min, rotor field rotating speed is 58.8
Rev/min, when stator field, rotor field rotation direction are identical, rotating shaft rotating speed is 1.18 revs/min, rotating shaft turn to also with stator magnet
Field is identical with rotor field rotation direction.
Owing to existing 50 or 60Hz three-phase alternating-current motor stators and rotor pole logarithm are equal.And this utility model is
Motor number of pole-pairs, and for obtaining low rotating speed 1 or 2 number of pole-pairs of difference, so being difference pole motor.
Such as in oil field, oil girder-like oil pump mechanical separator speed only has 6 revs/min, if directly with motor-driven, motor
In the case of installation dimension the most not can exceed that the original installation dimension of reductor, motor is cannot be at 50Hz frequency when rated power
Rate is issued to 6 revs/min, so the method for frequency conversion can only be used directly to drive oil pumper.This utility model is not using frequency conversion
In the case of motor speed can be made to be reduced to 6 revs/min.
The present embodiment motor stator winding is different with rotor windings number of pole-pairs, and motor is 50Hz or 60Hz that frequency is constant
Three-phase alternating-current motor, threephase motor stator winding is different with motor rotor winding number of pole-pairs, three-phase motor stator magnetic field
Direction of rotation is consistent with rotor field rotation side, and motor output shaft rotation direction is also identical with stator and rotor.Due to stator poles with
Rotor number of poles is different, and both rotating excitation field rotating speeds are different, and motor rotary shaft synthesis rotating speed is the difference of stator and rotor rotational speed of magnetic field,
Rotating shaft reaches the purpose of reduction of speed.
Although this utility model has been made specific descriptions by above-described embodiment, but for those of ordinary skill in the art
For, it is understood that can within without departing from spirit and scope of the present utility model based on disclosed in this utility model in
Holding and modify or improve, these amendments and improvement are all within spirit and scope of the present utility model.
Claims (8)
1. the extremely low electric motor with speed of difference, it is characterised in that this motor includes rotor (1), stator (7) and rotating shaft (2), described
Rotor (1) includes rotor core (101), rotor windings (102), collector ring (103) and without latitude fixing band (104),
Described rotor windings (102) is by without latitude fixing band (104) colligation outer round surface in rotor core (101), described nothing
Latitude fixing band (104) is processed by epoxy insulation and is solidificated in rotor core (101), and described rotor windings (102) is by connecting
Line (4) is connected on collector ring (103), and described collector ring (103) contacts with three-phase carbon brush (12) and three-phase current is introduced rotor
In winding (102)；
Described stator (7) includes stator core (701) and stator winding (702), described rotor windings (102) and stator winding
(702) being three-phase alternating current winding, the number of pole-pairs of described rotor windings (102) is more than the number of pole-pairs of stator winding (702).
The extremely low electric motor with speed of difference the most according to claim 1, it is characterised in that the number of pole-pairs of described rotor windings (102)
Number of pole-pairs many 1 or 2 than stator winding (702).
The extremely low electric motor with speed of difference the most according to claim 1, it is characterised in that the number of pole-pairs of described rotor windings (102)
Not less than 51, the number of pole-pairs of described stator winding (702) is not less than 50.
The extremely low electric motor with speed of difference the most according to claim 1, it is characterised in that described rotor windings (102) for distribution around
Group or concentratred winding.
The extremely low electric motor with speed of difference the most according to claim 1, it is characterised in that described rotor core (101) does not set winding
Groove；Described rotor windings (102) is slotless winding.
The extremely low electric motor with speed of difference the most according to claim 1, it is characterised in that described stator winding (702) for distribution around
Group or concentratred winding.
The extremely low electric motor with speed of difference the most according to claim 1, it is characterised in that described stator winding (702) for have groove around
Group.
The extremely low electric motor with speed of difference the most according to claim 1, it is characterised in that described rotor windings includes A phase coil
(8), B phase coil (9) and C phase coil (10), described A phase coil (8), B phase coil (9) and C phase coil (10) are the most successively
It is arranged in rotor core (101) outer surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620663210.3U CN205847028U (en) | 2016-06-29 | 2016-06-29 | The extremely low electric motor with speed of difference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620663210.3U CN205847028U (en) | 2016-06-29 | 2016-06-29 | The extremely low electric motor with speed of difference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205847028U true CN205847028U (en) | 2016-12-28 |
Family
ID=57620926
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620663210.3U Active CN205847028U (en) | 2016-06-29 | 2016-06-29 | The extremely low electric motor with speed of difference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205847028U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105932842A (en) * | 2016-06-29 | 2016-09-07 | 李勇 | Differential-pole low-speed electromotor |
-
2016
- 2016-06-29 CN CN201620663210.3U patent/CN205847028U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105932842A (en) * | 2016-06-29 | 2016-09-07 | 李勇 | Differential-pole low-speed electromotor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180410 Address after: 201514 Jinshan District Zhangyan town Shanghai City Song Jin Road No. 2758 building 7 room A1042 Patentee after: Shanghai Sakura Electromechanical Technology Co., Ltd. Address before: 200127 305, 3 Lane 150 Lane North Linyi Road, Pudong New Area, Shanghai. Co-patentee before: Zhang Lirui Patentee before: Li Yong |
|
| TR01 | Transfer of patent right |