CN208337266U - It is a kind of for remanufacturing the p-m rotor of replacement - Google Patents
It is a kind of for remanufacturing the p-m rotor of replacement Download PDFInfo
- Publication number
- CN208337266U CN208337266U CN201821054478.2U CN201821054478U CN208337266U CN 208337266 U CN208337266 U CN 208337266U CN 201821054478 U CN201821054478 U CN 201821054478U CN 208337266 U CN208337266 U CN 208337266U
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- rotor
- dovetail groove
- shaft
- keyway
- remanufacturing
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- Manufacture Of Motors, Generators (AREA)
Abstract
The utility model discloses a kind of for remanufacturing the p-m rotor of replacement, the rotor includes shaft and the rotor body that is formed by stacking by multiple groups rotor core module, the circumferential direction of the rotor body is provided with multiple dovetail grooves, the dovetail groove is greater than opening area of the dovetail groove far from the shaft close to the base area of the shaft, the extending direction of the dovetail groove is parallel with the shaft, and the magnet steel matched with the dovetail groove is inserted into the dovetail groove；The center of the rotor core module is provided with through-hole, and the through-hole is provided with the first keyway, and the shaft is provided with the second keyway matched with first keyway, and the shaft is provided with third keyway far from one end of the rotor core；Around the circumferential direction of the rotor body, the both ends of the magnet steel protective case are respectively arranged with drive end bearing bracket and rear end cap on the surface of magnet steel protective case.The utility model is able to extend rotor service life, improves the efficiency of motor.
Description
Technical field
The utility model relates to motor re-manufacturing technology field, in particular to a kind of permanent magnetism for remanufacturing replacement turns
Son.
Background technique
Motor is the driving device of the various equipment such as blower, pump, compressor, lathe, transmission belt, weaving loom, is widely applied
It is that the maximum power consumption of electricity consumption is mechanical in multiple industries such as metallurgy, petrochemical industry, chemical industry, coal, building materials, public utility and field.According to
Statistical calculation, 2011, about 1,700,000,000 kilowatts of China's motor ownership, about 3,000,000,000,000 kilowatt hour of total power consumption accounted for the total electricity consumption of the whole society
The 64% of amount, wherein industrial circle motor total electricity consumption is 2.6 trillion kilowatt hours, accounts for about the 75% of commercial power.
Currently, the problem of there is the following aspects in motor use process.Firstly, being born in motor application operating condition
Load rate is often all insufficient, so that electric efficiency is very low.Secondly, asynchronous machine is widely used, asynchronous machine rotor winding can be with hair
Hot form consumes part electric energy, which accounts for about the 20%~30% of motor total losses, and the efficiency of motor reduces, while influencing electricity
The service life of machine.Meanwhile in inductance current after the conversion to stator winding of rotor windings exciting current, make into stator winding
Electric current lags behind one angle of network voltage, and the power factor of motor is caused to reduce.Again, when starting asynchronous motor, it is desirable that electricity
Machine has sufficiently large starting torque, but wishes that starting current is not too big, so as not to power grid generate excessive voltage landing and
Influence connects the normal operation of other electric machinery and apparatus on power grid.In addition, motor itself will be made when starting current is excessive
The impact of power is done by excessive electricity, if often started, the danger for also overheating winding.Therefore, the starting of asynchronous machine is set
Meter is often faced with dilemma.
To sum up, that there are power factors is low for conventional asynchronous motor, and motor working efficiency is low, and starting current is big, and it is steady to influence power grid
It is fixed, the problem of rotor windings consume electric energy in the form of generating heat, motor service life is impacted etc..Propose permanent magnet synchronous electric
The concept of machine, by the way that rotor windings are become p-m rotor, it is synchronous to constitute p-m rotor that is, in the structure of conventional asynchronous motor
Motor.Magnetic flux can be provided to motor by p-m rotor, induce electromotive force in the stator windings, reduce exciting current, from
And motor power factor both can be improved, motor working efficiency is improved, starting current becomes smaller, and starting torque increases, while can be with
The thermal energy consumption of rotor windings is reduced, motor service life is extended, energy-saving effect is prominent.
But in the actual production process, it between permanent magnet and iron core, is bonded by glue, under motor low-speed situations,
Glue bonding can be used normally, or the long period can be used, but under motor high-speed case, specifically be greater than
When 3500 revs/min, for glue under the effect of huge centrifugal force, while in the case of a high temperature, glue failure leads to permanent magnet
It falls, so that magneto breaks down.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of for remanufacturing the p-m rotor of replacement, is turned with extending
Sub- service life improves the efficiency of motor.
In order to solve the above-mentioned technical problem, the technical solution of the utility model are as follows:
It is a kind of for remanufacturing the p-m rotor of replacement, the rotor includes shaft and is superimposed by multiple groups rotor core module
Made of rotor body, the circumferential direction of the rotor body is provided with multiple dovetail grooves, the dovetail groove is close to the shaft
Base area is greater than opening area of the dovetail groove far from the shaft, and the extending direction of the dovetail groove and the shaft are flat
Row, the magnet steel matched with the dovetail groove are inserted into the dovetail groove；The center of the rotor core module is provided with through-hole, described
Through-hole is provided with the first keyway, and the shaft is provided with the second keyway matched with first keyway, and the shaft is separate
One end of the rotor core is provided with third keyway；Circumferential direction of the surface of magnet steel protective case around the rotor body, institute
The both ends for stating magnet steel protective case are respectively arranged with drive end bearing bracket and rear end cap.
Preferably, the bottom surface of the dovetail groove is plane.
Preferably, the bottom surface of the dovetail groove is cambered surface, and the center of the cambered surface is the center of the rotor body.
Preferably, it is provided with and multiple goes between the dovetail groove and the through-hole in the circumferential direction of the rotor body
Repeated hole.
Compared with prior art, the utility model has the beneficial effects that: the rotor after remanufacturing is by processing dovetail groove,
And by being embedded in permanent magnet in dovetail groove, to improve intensity of the permanent magnet in conjunction with iron core, the reuse ratio of old motor is improved.
Moreover, the magnet steel protective case surrounded outside rotor body has further protected the combination of permanent magnet and iron core.
Detailed description of the invention
Some specific realities of the utility model are described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter
Apply example.Identical appended drawing reference denotes same or similar part or part in attached drawing.It should be appreciated by those skilled in the art that
The drawings are not necessarily drawn to scale.In attached drawing:
Fig. 1 is that the utility model is a kind of for remanufacturing the schematic diagram of the p-m rotor of replacement, and wherein magnet steel protective case 3 is
One side of something is splitted, to appear the state of the rotor body 1 of the inside.
Meaning represented by each symbol is as follows in figure,
1- rotor body；2- dovetail groove；3- magnet steel protective case；4- shaft；5- through-hole；6- removes repeated hole；The first keyway of 7-；8-
Second keyway；9- third keyway.
Specific embodiment
Specific embodiment of the present utility model is described further with reference to the accompanying drawing.It should be noted that
The explanation of these embodiments is used to help to understand the utility model, but does not constitute the restriction to the utility model.This
Outside, technical characteristic involved in the various embodiments of the present invention described below is as long as they do not conflict with each other
It can be combined with each other.
As shown in Figure 1, the magnet steel guarantor that the utility model discloses a kind of for remanufacturing the p-m rotor of replacement, in Fig. 1
Sheath 3 is to split one side of something, to appear the state of the rotor body 1 of the inside.Rotor mainly includes shaft 4 and by multiple groups rotor core
The rotor body 1 that module is formed by stacking.The circumferential direction of the rotor body 1 is provided with multiple dovetail grooves 2.The shape of dovetail groove 2
Are as follows: its extending direction is parallel with the shaft 4, is greater than the dovetail groove 2 far from described close to the base area of the shaft 4
The opening area of shaft 4.In the present embodiment, the bottom surface of dovetail groove 2 is cambered surface, and the center of the cambered surface is the rotor body
1 center.And in other embodiments, the bottom surface of dovetail groove 2 can also be plane.Therefore, it is matched with the dovetail groove 2
Magnet steel is inserted into the dovetail groove 2.The both ends of magnet steel protective case 3 are respectively arranged with drive end bearing bracket and rear end cap.Magnet steel protective case 3
Surface around the rotor body 1 circumferential direction, to further protect the combination of permanent magnet and iron core.
It is provided in the circumferential direction of the rotor body 1 and multiple removes repeated hole between the dovetail groove 2 and the through-hole 5
6, to mitigate the weight of rotor body 1 significantly, improve the power factor (PF) of motor.
The center of rotor core module is provided with through-hole 5.The through-hole 5 is provided with the first keyway 7, and the shaft 4 is provided with
The second keyway 8 matched with first keyway 7, the shaft 4 are provided with third key far from one end of the rotor core
Slot 9.First keyway 7, the second keyway 8, third keyway 9 can be improved the bond strength of each component of rotor.
The embodiments of the present invention is explained in detail in conjunction with attached drawing above, but the utility model is not limited to be retouched
The embodiment stated.For a person skilled in the art, right in the case where not departing from the utility model principle and spirit
These embodiments carry out a variety of change, modification, replacement and modification, still fall in the protection scope of the utility model.
Claims (4)
1. a kind of for remanufacturing the p-m rotor of replacement, which is characterized in that the rotor includes shaft and by multiple groups rotor iron
The rotor body that core module is formed by stacking is provided with multiple dovetail grooves in the circumferential direction of the rotor body, and the dovetail groove is close
The base area of the shaft be greater than opening area of the dovetail groove far from the shaft, the extending direction of the dovetail groove with
The shaft is parallel, and the magnet steel matched with the dovetail groove is inserted into the dovetail groove；It opens at the center of the rotor core module
There is through-hole, the through-hole is provided with the first keyway, and the shaft is provided with the second keyway matched with first keyway, institute
It states shaft and one end of the rotor core is provided with third keyway；The surface of magnet steel protective case is around the rotor body
Circumferential direction, the both ends of the magnet steel protective case are respectively arranged with drive end bearing bracket and rear end cap.
2. according to claim 1 a kind of for remanufacturing the p-m rotor of replacement, which is characterized in that the dovetail groove
Bottom surface is plane.
3. according to claim 1 a kind of for remanufacturing the p-m rotor of replacement, which is characterized in that the dovetail groove
Bottom surface is cambered surface, and the center of the cambered surface is the center of the rotor body.
4. according to claim 1 a kind of for remanufacturing the p-m rotor of replacement, which is characterized in that in the rotor sheet
The circumferential direction of body, which is provided with, multiple removes repeated hole between the dovetail groove and the through-hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821054478.2U CN208337266U (en) | 2018-07-04 | 2018-07-04 | It is a kind of for remanufacturing the p-m rotor of replacement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821054478.2U CN208337266U (en) | 2018-07-04 | 2018-07-04 | It is a kind of for remanufacturing the p-m rotor of replacement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208337266U true CN208337266U (en) | 2019-01-04 |
Family
ID=64786361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821054478.2U Active CN208337266U (en) | 2018-07-04 | 2018-07-04 | It is a kind of for remanufacturing the p-m rotor of replacement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208337266U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111106685A (en) * | 2019-11-29 | 2020-05-05 | 北京自动化控制设备研究所 | Permanent magnet motor based on magnetic pole special-shaped array |
-
2018
- 2018-07-04 CN CN201821054478.2U patent/CN208337266U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111106685A (en) * | 2019-11-29 | 2020-05-05 | 北京自动化控制设备研究所 | Permanent magnet motor based on magnetic pole special-shaped array |
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