CN208806671U - A kind of permanent magnetism solid rotor and the asynchronous starting permanent magnet synchronous motor containing it - Google Patents
A kind of permanent magnetism solid rotor and the asynchronous starting permanent magnet synchronous motor containing it Download PDFInfo
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- CN208806671U CN208806671U CN201821810644.7U CN201821810644U CN208806671U CN 208806671 U CN208806671 U CN 208806671U CN 201821810644 U CN201821810644 U CN 201821810644U CN 208806671 U CN208806671 U CN 208806671U
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- slot wedge
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Abstract
The utility model discloses a kind of permanent magnetism solid rotors, and including shaft, the pole core being sleeved in shaft and the permanent magnet being mounted in pole core, the pole core includes bushing, pole shoe and pin；The pole shoe is set on bushing, and the two is connected to become an entirety by the pin entered from pole core end oblique cutting.The invention also discloses a kind of asynchronous starting permanent magnet synchronous motors containing above-mentioned permanent magnetism solid rotor structure.The permanent magnetism solid rotor structure manufacturing cost of the above-mentioned peg type connection of the utility model is low, it can mass production, asynchronous starting permanent magnet synchronous motor with the structure has the good starting performance that starting torque is big, pull-in torque is big, starting current is small, simultaneously have high efficiency, High Power Factor, high overload multiple good runnability, and the more difficult deficiency of Stamped steel type rotor structure spatial design is overcome, is suitable for popularization and application.
Description
Technical field
The utility model relates to motor field, more particularly to a kind of permanent magnetism solid rotor and containing its asynchronous starting forever
Magnetic-synchro motor.
Background technique
Whether there is or not start winding, be divided into without the motor for starting winding and have starting winding by rotor for permasyn morot
Motor.Without the motor for starting winding, for the occasion of inverter supply, also referred to as speed regulation permasyn morot；Have
The motor for starting winding, can be not only used for speed governing operation, and the starting of induction torque caused by rotor starting winding can also be used, claim
For asynchronous starting permanent magnet synchronous motor.Asynchronous starting permanent magnet synchronous motor is there are two types of structure, and one kind is Stamped steel type rotor, separately
One kind is solid rotor structure.
The punching rotor of Stamped steel type asynchronous starting permanent magnet synchronous motor is similar to the rotor structure of mouse cage asynchronous motor,
Rotor cage item and rotor end ring short circuit, form the starting winding of rotor, and starting performance is suitable with mouse cage asynchronous motor, but
Because cage grooves should be arranged in the rotor punching of Stamped steel type asynchronous starting permanent magnet synchronous motor, permanent magnet trough there is provision of, turn
The space of son is limited, and structure design is more difficult.
The asynchronous starting permanent magnet synchronous motor of solid rotor structure, the magnetic pole for generally comprising shaft, being sleeved in shaft
Iron core and the permanent magnet being mounted in pole core, wherein pole core includes bushing and the pole shoe that welding is sleeved on bushing.
The pole core of such structure type is the universal architecture of motor field, but its processing and manufacturing is complicated, substantially increases solid turn
The manufacturing cost of minor structure, and can not mass production.
In view of the above deficiencies, how to found a kind of manufacturing cost it is low, can mass production, the letter of rotor structure spatial design
Singly, the permanent magnetism solid rotor structure and contain that electric motor starting torque is big, starting current is small, pull-in torque is big, overload magnification is big
The asynchronous starting permanent magnet synchronous motor of the permanent magnetism solid rotor structure becomes current industry and needs improved target.
Utility model content
That the technical problem to be solved by the present invention is to provide a kind of manufacturing costs is low, can mass production, rotor structure
The permanent magnetism solid rotor knot that spatial design is simple, electric motor starting torque is big, starting current is small, pull-in torque is big, overload magnification is big
Structure and asynchronous starting permanent magnet synchronous motor containing the permanent magnetism solid rotor structure.
In order to solve the above technical problems, the utility model takes following technical scheme:
A kind of permanent magnetism solid rotor including shaft, the pole core being sleeved in shaft and is mounted in pole core
Permanent magnet, the pole core include bushing, pole shoe and pin；
The pole shoe is set on bushing, and the two is connected to become one by the pin entered from pole core end oblique cutting
It is whole.
It is further improved as the utility model, the mating surface of the pole shoe and bushing uses inorganic gluing knot；It is described
Pin hole is provided on pole shoe and bushing, the pin is embedded in pin hole, and between pin and pin hole, using inorganic gluing
Knot.
It further, further include rotor slot wedge, rotor press plate, rotor end ring；It opens the pole shoe outer surface of the pole core
Have along axial permanent magnet trough and the axial notch for installing rotor slot wedge；The permanent magnet is installed in permanent magnet trough；Institute
It states permanent magnet and passes through the rotor press plate axial compression that pole core two sides are set；The rotor slot wedge is mounted in axial notch
And permanent magnet described in radial compaction；And rotor slot wedge is connect with solid rotor pole core；The rotor slot wedge stretches out magnetic pole iron
Each certain distance in the both ends of core, rotor end ring are set to the both ends of rotor slot wedge, connect with rotor slot wedge；In the pole core
Every pole pole shoe on it is axially disposed have one or several sulculuses, sulculus copper sheet is inserted into the sulculus, sulculus copper sheet stretches out
After the part bending of both ends of the surface, it is welded into a whole with rotor end ring；The pole shoe, rotor slot wedge, sulculus copper sheet and rotor-end
Starting winding of the ring collectively as rotor.
Further, the Design of Permanent Magnet is partitioned organization, including axial piecemeal and radial blocking.
Further, between the bottom and permanent magnet of every pole permanent magnet trough, it is provided with the slot bottom pad of epoxy resin bonded fiber
Item；Between the permanent magnet and rotor slot wedge, it is provided with the wedge bar of epoxy resin bonded fiber.
Further, the seam crossing of the rotor slot wedge and pole core plays several foreign punchings.
Further, the bottom surface of the rotor end ring and rotor slot wedge manufactures plane.
Further, the seam crossing of the sulculus copper sheet and pole core plays several foreign punchings.
Further, the rotor slot wedge is process by copper sheet；Rotor press plate is process by non-magnetic material；Turn
Sub- end ring is copper end ring, and sulculus copper sheet is process by copper sheet；Bushing is process by un-conducted magnetic material duralumin plate；Pole shoe is by low
Carbon steel is process, and pin is stainless steel pin.
A kind of asynchronous starting permanent magnet synchronous motor, including above-mentioned permanent magnetism solid rotor.
Due to the adoption of the above technical scheme, the utility model at least has the following advantages:
1, the component pole core for forming permanent magnetism solid rotor structure is to be consolidated by pole shoe and bushing using pin connection type
Fixed, connection type is simple, does not need to weld, and manufacturing cost is low, and manufacturing cost reduces 10-15% or so relative to traditional approach,
In addition, being simple to manufacture, it can be achieved that mass production, is suitable for popularization and application, and uses the permanent magnetism solid rotor of this kind of connection structure
Light-weight, rotary inertia is small.
2, asynchronous starting permanent magnet synchronous motor uses full voltage asynchronous starting technology, is constituted using mild steel pole shoe solid
Rotor, permanent magnet embedded arranged tangential.Kelvin effect is utilized when starting, is generated vortex on pole shoe surface, is started initial, frequency
Height, the electromagnetic wave depth of penetration is shallower, and rotor skin resistance is big, therefore has biggish starting torque multiple, biggish pulls in
Torque multiple, lesser starting current times are particularly suitable for heavy-load start or the use occasion more demanding to starting performance.
3, one or several sulculus is arranged in every pole pole shoe of pole core, so that the vertical quadrature-axis reactance symmetry of motor
Preferably, starting characteristic is more smooth when starting, does not have severe depression phenomenon, ensure that motor smooth starting, avoids motor half
Fast attachment operating.
4, in the pole shoe of pole core along axial sulculus, be embedded in sulculus copper sheet, and with rotor slot wedge, rotor pressure
Plate forms boot cage together, can further increase the detent torque of motor.
5, in summary three kinds of structures, i.e. solid rotor+rotor slot wedge+sulculus copper sheet+rotor end ring starting cage ring knot
Structure can make the starting torque multiple of asynchronous starting and permanent magnet motor be up to 3~4.5 times so that asynchronous starting and permanent magnet synchronize it is electronic
Machine fundamentally solves the drawbacks of low load with strong power in motor application；Meanwhile rotor structure is simple, light-weight, rotary inertia is small.
6, since rotor is not necessarily to excitation, excitation is provided by permanent magnet completely, and asynchronous starting permanent magnet synchronous motor has
Higher power factor.Full loadPower factor curve is also relatively flat at light load, it is ensured that underloading
When have preferable power savings.
7, solid-rotor permanent-magnet synchronous motor, efficiency is higher when nominal load, and at light load, and efficiency curve is also more
It is flat, reach the efficiency standard of ultra high efficiency motor.
8, rotor permanent magnet is designed as axial piecemeal, radial blocking structure, and one side piecemeal permanent magnet is easy to process, pacifies
Dress, on the other hand axial, radial blocking permanent magnet can facilitate adjustment magnetic flux, can adjust the back-emf of motor to close to power grid
Voltage guarantees that motor has a higher power factor, and no-load current also very little further improves effect in limited rotor space
Rate.
9, solid-rotor permanent-magnet synchronous motor, while there is big overload torque multiple.
Below by drawings and examples, the technical solution of the utility model is described in further detail.
Detailed description of the invention
Above-mentioned is only the general introduction of technical solutions of the utility model, in order to better understand the technology hand of the utility model
Section, below in conjunction with attached drawing, the utility model is described in further detail with specific embodiment.
Fig. 1 is a kind of permanent magnetism solid rotor assembly total figure in the utility model embodiment；
Fig. 2 is A-A in Fig. 1 to sectional view；
Fig. 3 is a kind of pole core structure chart of permanent magnetism solid rotor in the utility model embodiment；
Fig. 4 is A-A in Fig. 3 to sectional view；
Fig. 5 is the B-B direction sectional view in Fig. 3.
Specific embodiment
It is illustrated below in conjunction with preferred embodiment of the attached drawing to the utility model, it should be understood that described herein excellent
It selects embodiment to be only used for describing and explaining the present invention, is not used to limit the utility model.
It please refers to shown in Fig. 1, Fig. 2, the specific structure of the permanent magnetism solid rotor in the present embodiment, comprising: rotor slot wedge 1,
Rotor press plate 2, permanent magnet 3, slot bottom filler strip 4, pole core 5, fastening screw 6, elastic washer 7, shaft 8, wedge bar 9, copper
End ring 10, sulculus copper sheet 11.The pole shoe outer surface of pole core 5 is provided with along axial permanent magnet trough and for installing rotor slot wedge
1 axial notch；Permanent magnet 3 is installed in permanent magnet trough；Permanent magnet 3 passes through the rotor press plate 2 that pole core two sides are arranged in
Axial compression；Rotor slot wedge 1 is mounted in axial notch and radial compaction permanent magnet 3；And rotor slot wedge 1 and solid rotor magnetic pole
Iron core 5 connects；Rotor slot wedge 1 stretches out each certain distance in both ends of pole core 5, and copper end ring 10 is set to the two of rotor slot wedge 1
End, connect with rotor slot wedge 1；It is axially disposed on every pole pole shoe of pole core 5 to have one or several sulculuses, in sulculus
Sulculus copper sheet 11 is inserted into be welded into a whole after sulculus copper sheet 11 stretches out the part bending of both ends of the surface with copper end ring 10；Magnetic pole iron
Starting winding of pole shoe, rotor slot wedge 1, sulculus copper sheet 11 and the copper end ring 10 of core 5 collectively as rotor.
Please refer to shown in Fig. 3-5, the pole core 5 of permanent magnetism solid rotor structure, using peg type connection type, by
Non-magnetic duralumin bushing 51, mild steel pole shoe 52, stainless steel pin 53 form, and mild steel pole shoe 52 is set in duralumin bushing 51
On, the two is connected to become an entirety by the pin 53 entered from 5 end oblique cutting of pole core.It such as, can be in every pole pole shoe 52
One pin 53 of upper insertion, in the oblique insertion pin hole 513 of pin 53.
The permanent magnetism solid rotor structure of above-mentioned pin connection type, belongs to that one of permanent magnetism solid rotor structure is novel to match
Conjunction mode, those skilled in the art in order to reduce processing and manufacturing cost, generally will not bushing and pole shoe fit system it is enterprising
Row improves, and for a long time, both uses welding connecting mode, and such mode has become cured conventional connection type, and
The utility model but as breach, is studied the fit system of the two, it has been investigated that, using pin connection type
Permanent magnetism solid rotor structure, relative to the conventional permanent magnetism solid rotor for using welding form, processing and manufacturing cost can be reduced
10%-15 or so, this can be the quantum jump in cost for the processing of permanent magnet solid rotor.
Please refer to shown in Fig. 3-5, the mild steel pole shoe 52 of pole core 5 is formed, by forging preliminary working, length and interior
It is machined into predetermined size, certain machining allowance is reserved in outer diameter roughing；The duralumin bushing 51 for forming pole core 5, by forging
Part is process, and length and outer diameter are worked into predetermined size, and certain machining allowance is reserved in internal diameter roughing.By 51 He of bushing
After the mating surface of pole shoe 52 is cleaned up with gasoline, is cemented and solidified with inorganic glue.
Referring to figure 3. shown in -5, after confirmation bushing 51 cements solidification with pole shoe 52, drilling processing is carried out as required.Magnetic pole
5 both ends of iron core are first drilled with drill jig, complete the process the pin hole 513 of specified quantity, after cleaning out, stainless steel pin 53 is embedding
Enter pin hole, by between pin 53 and pin hole 513, cements solidification with inorganic glue.
With continued reference to shown in Fig. 3-5.After confirmation pin cements solidification, the finishing such as groove milling drilling is carried out as required.Such as Fig. 3
Shown, by prescribed requirement, then the outer circle of smart car pole core processes the axis of predetermined size and quantitative requirement to predetermined size
To groove 511 (dovetail groove), permanent magnet trough 512, the threaded hole 514 being connected and fixed, sulculus 515.
It please refers to shown in Fig. 1 and attached drawing 2.The permanent magnetism solid rotor of peg type connection type, the components dress being contained by it
With forming.It will be on pole core 5 hot jacket to shaft 8；In the bottom of every pole permanent magnet trough, it is put into the slot bottom pad of epoxy resin bonded fiber
Item 4；The rotor press plate 2 of one end is fixed on pole core 5 with fastening screw 6 and spring washer 7；From the another of pole core 5
The piecemeal body permanent magnet 4 of prescribed direction and quantity is embedded in every pole permanent magnet trough 512 by one end；Point of each permanent magnet trough 512
Block permanent magnet 4 after the assembly is completed, is put into the wedge bar 9 of epoxy resin bonded fiber；Squeeze into copper slot wedge 1；Copper slot wedge 1 and pole core
5 seam crossing plays several foreign punchings, prevents copper slot wedge loosening；Copper end ring 10 and 1 silver soldering of copper slot wedge, copper end ring 10 and copper slot wedge 1
Bottom surface manufacture plane；Sulculus copper sheet 11 is inserted into sulculus 515, after sulculus copper sheet 11 stretches out the part bending of both ends of the surface, with
Copper end ring 10 is welded into a whole, and forms the starting cage of similar squirrel-cage motor；By the seam crossing of sulculus copper sheet 11 and pole core 5
Foreign punching is played at several positions, prevents the outer bullet of sulculus copper sheet 11；With fastening screw 6 and spring washer 7 by the rotor pressure of the other end
Plate 2 is fixed on pole core 5.
It please refers to shown in Fig. 2.Permanent magnet 3 is designed as partitioned organization, including axial piecemeal and radial blocking, one side piecemeal
Permanent magnet is easy to process, installs, and on the other hand axial, radial blocking permanent magnet can facilitate adjustment magnetic flux, make the electricity of motor
Kinetic potential close to end voltage.
It please refers to shown in Fig. 3.One or several sulculuses 515 is arranged in every pole pole shoe of pole core 5, so that motor is vertical
Quadrature-axis reactance symmetry is preferable, and starting characteristic is more smooth when starting, does not have severe depression phenomenon, ensure that motor steadily opens
It is dynamic, it avoids being maintained under Half Speed and operates.
In the present embodiment, rotor slot wedge 1 is process by copper sheet；Rotor press plate 2 is process by non-magnetic material, material
Material can be epoxy plate, copper sheet, stainless steel plate, aluminium sheet, and rotor weight is light, rotary inertia is small.Rotor end ring is copper end ring 11, small
Slot copper sheet 11 is process by copper sheet；Bushing 51 is process by un-conducted magnetic material duralumin plate；Pole shoe 52 by mild steel process and
At pin 53 is process by non-magnetic stainless steel material.
Above structure is converted through using for reference, and can be widely used for the reality with the asynchronous starting permanent magnet synchronous motor of other numbers of poles
In heart rotor structure.
The line-start permanent magnetic synchronous motor of permanent magnetism solid rotor structure containing above-mentioned pin connection type has big rise
Dynamic torque is big, high pull-in torque, the good starting performance of small starting current, while having high efficiency, High Power Factor, high overload
The runnability of multiple, and the more difficult deficiency of Stamped steel type rotor structure spatial design is overcome, it is particularly suitable for heavy duty and rises
The dynamic or use occasion more demanding to starting performance.
Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention, it is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic
It is equivalently replaced.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on,
It should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of permanent magnetism solid rotor including shaft, the pole core being sleeved in shaft and is mounted in pole core forever
Magnet, which is characterized in that the pole core includes bushing, pole shoe and pin；
The pole shoe is set on bushing, the two by the pin entered from pole core end oblique cutting be connected to become one it is whole
Body.
2. permanent magnetism solid rotor according to claim 1, which is characterized in that the mating surface of the pole shoe and bushing uses nothing
Machine gluing knot；Pin hole is provided on the pole shoe and bushing, the pin is embedded in pin hole, and between pin and pin hole,
Using inorganic gluing knot.
3. permanent magnetism solid rotor according to claim 1 or 2, which is characterized in that further include rotor slot wedge, rotor press plate,
Rotor end ring；
The pole shoe outer surface of the pole core is provided with along axial permanent magnet trough and the axial notch for installing rotor slot wedge；
The permanent magnet is installed in permanent magnet trough；The permanent magnet passes through the rotor press plate axial direction pressure that pole core two sides are arranged in
Tightly；The rotor slot wedge is mounted in axial notch and permanent magnet described in radial compaction；And rotor slot wedge and solid rotor magnetic pole
Iron core connection；The rotor slot wedge stretches out each certain distance in both ends of pole core, and rotor end ring is set to the two of rotor slot wedge
End, connect with rotor slot wedge；
It is axially disposed on every pole pole shoe of the pole core to have one or several sulculuses, sulculus is inserted into the sulculus
Copper sheet is welded into a whole after sulculus copper sheet stretches out the part bending of both ends of the surface with rotor end ring；
The starting winding of the pole shoe, rotor slot wedge, sulculus copper sheet and rotor end ring collectively as rotor.
4. permanent magnetism solid rotor according to claim 3, which is characterized in that the Design of Permanent Magnet is partitioned organization, packet
Include axial piecemeal and radial blocking.
5. permanent magnetism solid rotor according to claim 3, which is characterized in that bottom and permanent magnet in every pole permanent magnet trough
Between, it is provided with the slot bottom filler strip of epoxy resin bonded fiber；
Between the permanent magnet and rotor slot wedge, it is provided with the wedge bar of epoxy resin bonded fiber.
6. permanent magnetism solid rotor according to claim 3, which is characterized in that the seam of the rotor slot wedge and pole core
Several foreign punchings are played at place.
7. permanent magnetism solid rotor according to claim 3, which is characterized in that the bottom surface of the rotor end ring and rotor slot wedge
Manufacture plane.
8. permanent magnetism solid rotor according to claim 3, which is characterized in that the seam of the sulculus copper sheet and pole core
Several foreign punchings are played at place.
9. permanent magnetism solid rotor according to claim 3, which is characterized in that the rotor slot wedge is process by copper sheet；
Rotor press plate is process by non-magnetic material；Rotor end ring is copper end ring, and sulculus copper sheet is process by copper sheet；Bushing by
Un-conducted magnetic material duralumin plate is process；Pole shoe is process by mild steel, and pin is stainless steel pin.
10. a kind of asynchronous starting permanent magnet synchronous motor, which is characterized in that including the described in any item permanent magnetism of claim 1-7
Solid rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821810644.7U CN208806671U (en) | 2018-11-05 | 2018-11-05 | A kind of permanent magnetism solid rotor and the asynchronous starting permanent magnet synchronous motor containing it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821810644.7U CN208806671U (en) | 2018-11-05 | 2018-11-05 | A kind of permanent magnetism solid rotor and the asynchronous starting permanent magnet synchronous motor containing it |
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| CN208806671U true CN208806671U (en) | 2019-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821810644.7U Active CN208806671U (en) | 2018-11-05 | 2018-11-05 | A kind of permanent magnetism solid rotor and the asynchronous starting permanent magnet synchronous motor containing it |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109149819A (en) * | 2018-11-05 | 2019-01-04 | 北京英孚莱特动力技术有限公司 | A kind of permanent magnetism solid rotor, manufacturing method and asynchronous starting permanent magnet synchronous motor |
| CN110417147A (en) * | 2019-05-20 | 2019-11-05 | 天津市天发重型水电设备制造有限公司 | A kind of improved rotor field spider hot jacket assembling structure |
-
2018
- 2018-11-05 CN CN201821810644.7U patent/CN208806671U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109149819A (en) * | 2018-11-05 | 2019-01-04 | 北京英孚莱特动力技术有限公司 | A kind of permanent magnetism solid rotor, manufacturing method and asynchronous starting permanent magnet synchronous motor |
| CN110417147A (en) * | 2019-05-20 | 2019-11-05 | 天津市天发重型水电设备制造有限公司 | A kind of improved rotor field spider hot jacket assembling structure |
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