CN206992821U - Moving load with high speed rotor structure and the motor comprising the rotor structure - Google Patents

Moving load with high speed rotor structure and the motor comprising the rotor structure Download PDF

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Publication number
CN206992821U
CN206992821U CN201720828958.9U CN201720828958U CN206992821U CN 206992821 U CN206992821 U CN 206992821U CN 201720828958 U CN201720828958 U CN 201720828958U CN 206992821 U CN206992821 U CN 206992821U
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rotor
end ring
high speed
steel sheet
silicon steel
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CN201720828958.9U
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张胜川
张诗香
李鹏
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NIO Co Ltd
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NIO Co Ltd
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Abstract

A kind of moving load with high speed rotor structure and the motor comprising the rotor structure are the utility model is related to, the rotor structure includes rotor core, and it is provided centrally with axially extending bore;The first rotor end ring made of high-yield strength silicon steel sheet, it is close to the rotor core, is arranged on rotor core both ends;Second rotor end ring, it is close to the first rotor end ring end set;Rotor bar, it is arranged on the rotor core, the first rotor end ring, the periphery of the second rotor end ring;And rotating shaft, it is arranged in the axially extending bore.The utility model makes asynchronous machine under the premise of electromagnetic performance is ensured, greatly improves the mechanical strength of rotor, and then improves the maximum speed of motor, is more beneficial for high speed and the miniaturization of design of electrical motor.

Description

Moving load with high speed rotor structure and the motor comprising the rotor structure
Technical field
It the utility model is related to technical field of motors, more particularly to a kind of moving load with high speed rotor structure and include this turn The motor of minor structure.
Background technology
Asynchronous motor is to produce electromagnetic torque by air-gap rotating magnetic field and the interaction of rotor windings induced-current, so as to Realize a kind of alternating current generator that energy converting between mechanical is mechanical energy.In existing all kinds of motor applications, asynchronous machine demand Measure larger.At present, the application of asynchronous machine is intended to high speed and miniaturization, however, when running at high speed, asynchronous machine is led Bar and rotor end ring are subject to centrifugal forces, and the phenomenon of fracture failure easily occur in sliver or end ring, and when serious, fracture is led Bar can fly out, and scratch stator, injury stator insulation, cause stator short-circuit, so that burn-down of electric motor damages.
For the purpose of safety, in the prior art, retaining ring structure is increased at rotor end ring, still, this scheme needs volume Putting-out system is made, and adds production cost, and adds the installation time of motor.In the prior art, it is additionally included in rotor core One high strength steel rotor end ring is set between rotor end ring, and still, this high strength steel rotor end ring, usual thickness is big In 3mm, stamped difficulty is big, and precision is difficult to ensure, grinding tool short life, further, since its yield strength is very high (generally big In 600MPa), therefore, the Making mold difficulty of the rotor made of steel end ring of punching press is big, and cost is high, and required precision is also very high, right It is very big challenge for production firm, is difficult to realize the batch production of high strength steel rotor end ring.It follows that turning The technical scheme of one high strength steel rotor end ring is set between sub unshakable in one's determination and rotor end ring, and cost is high, poor practicability.
Utility model content
Technical problem to be solved in the utility model is, there is provided a kind of moving load with high speed rotor structure and includes this The motor of rotor structure, mechanical strength and peace under high speed operation of motor are improved while asynchronous machine electromagnetic performance is ensured Full reliability, so that motor is more suitable for running at high speed.
Another object of the present utility model is, by the silicon steel material of two kinds of different performances, makes the electromagnetic performance of motor It can be got both simultaneously with mechanical performance.Silicon steel sheet punching precision height, die life length simultaneously, are more easy to accomplish scale production.
In order to solve the above-mentioned technical problem, the utility model provides a kind of moving load with high speed rotor structure, and it includes:
Rotor core, it is provided centrally with axially extending bore;
The first rotor end ring made of high-yield strength silicon steel sheet, it is close to the rotor core, is arranged on rotor iron Heart both ends;
Second rotor end ring, it is close to the first rotor end ring end set;
Rotor bar, it is arranged on the rotor core, the first rotor end ring, the periphery of the second rotor end ring;
And rotating shaft, it is arranged in the axially extending bore.
Further, the rotating shaft is combined in an interference fit with the rotor core.
Further, the axially disposed shaft shoulder for having projection of the rotating shaft, the shaft shoulder are in contact with the first rotor end ring.
Further, the periphery of the rotor core, the first rotor end ring and the second rotor end ring is circumferentially arranged useful In the sliver hole of installation rotor bar, the rotor bar inserts the sliver hole.
Further, the sliver hole is equal along the circumference of the rotor core, the first rotor end ring and the second rotor end ring Even distribution.
Further, the rotor core after the high magnetic conductivity silicon steel sheet punching press of multi-disc by being overrided to form.
Further, the first rotor end ring after multi-disc high-yield strength silicon steel sheet punching press by being overrided to form.
Further, the yield strength scope of the high magnetic conductivity silicon steel sheet is 330MP-400MP, the high-yield strength The yield strength of silicon steel sheet is higher than 600MP.
Further, the thickness of the high magnetic conductivity silicon steel sheet is 0.2mm~0.5mm, the high-yield strength silicon steel sheet Thickness is 0.5mm~1mm.
Further, the rotor bar and second rotor end ring by high conductivity oxygen-free copper or copper alloy system Into.
Further, the rotor bar and second rotor end ring are fixed together.
Further, the rotor bar and second rotor end ring are fixed together by the way of welding.
According to another aspect of the present utility model, there is provided a kind of asynchronous machine, including the rotor structure.
The utility model has clear advantage and beneficial effect compared with prior art.By above-mentioned technical proposal, sheet A kind of moving load with high speed rotor structure of utility model and the motor comprising the rotor structure can reach suitable technological progress And practicality, and with the extensive value in industry, it at least has following advantages:
1st, rotor core is made up of high magnetic conductance silicon steel sheet, ensure that the high electromagnetic performance of motor.
2nd, the first rotor end ring at rotor core both ends is made up of the silicon steel sheet of high yield degree, improves the machine of rotor structure Tool intensity, the resistance to centrifugal force of rotor structure is set to become big, so as to improve motor operation rotating speed.
3rd, rotor core is made up of high magnetic conductance silicon steel sheet, and the first rotor end ring at rotor core both ends is by high yield degree Silicon steel sheet is made, the combination of two kinds of silicon steel materials, realize jointly motor electromagnetic performance and mechanical performance it is compatible, make Motor improves the maximum speed of motor on the premise of electromagnetic performance and mechanical performance is ensured.
4 while silicon steel sheet punching precision is high, die life length, it is more easy to accomplish scale production.
5th, the utility model makes asynchronous machine greatly improve the mechanical strength of rotor under the premise of electromagnetic performance is ensured, enter And the maximum speed of motor is improved, it is more beneficial for realizing high speed and the miniaturization of design of electrical motor.
Described above is only the general introduction of technical solutions of the utility model, in order to better understand skill of the present utility model Art means, and being practiced according to the content of specification, and in order to allow above and other purpose of the present utility model, feature It can be become apparent with advantage, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, described in detail as follows.
Brief description of the drawings
Fig. 1 is the moving load with high speed rotor structure schematic cross-section that the embodiment of the utility model one provides.
Fig. 2 is the utility model Figure 1A-A schematic cross-sections.
Description of reference numerals:
1- rotor core 2- rotor bars
3- the first rotor end ring the second rotor end rings of 4-
31- the first rotor left end ring 32- the first rotor right-hand member rings
41- the second rotor left end ring 42- the second rotor right-hand member rings
The 5- rotating shaft 6- shaft shoulders
Embodiment
Further to illustrate that the utility model is to reach the technological means and effect that predetermined purpose of utility model taken, Below in conjunction with accompanying drawing and preferred embodiment, to according to the utility model proposes a kind of moving load with high speed rotor structure and comprising The embodiment and its effect of the motor of the rotor structure, describe in detail as after.
In the course of the work, (rotor end ring is corresponding originally herein for rotor bar and rotor end ring for existing asynchronous machine rotor The second rotor end ring 4 in utility model) it is subject to centrifugal forces, it is easily broken off at high speed, the utility model proposes A kind of moving load with high speed rotor structure, as shown in Figures 1 and 2, the rotor structure includes:Rotor core 1, rotor is led Bar 2, the first rotor end ring 3, the second rotor end ring 4 and rotating shaft 5, wherein, the rotor core 1 is provided centrally with axially extending bore, The rotating shaft 5 is arranged in the axially extending bore;The first rotor end ring 3 made of high-yield strength silicon steel sheet, it is close to turn Sub- iron core 1, is arranged on the both ends of rotor core 1, as an example, first end ring 3 rivets with rotor core 1;Described second turn Sub- end ring 4 is close to the first rotor end ring 3, is arranged on the end of the first rotor end ring 3;The rotor bar 2 is arranged on described turn Sub- iron core 1, the periphery of the rotor end ring 4 of the first rotor end ring 3 and second.The first rotor end ring made of high-yield strength silicon steel sheet 3 setting, the anti-centrifugation ability of asynchronous machine rotor greatly improved, improve the rotating speed of asynchronous machine, and ensure that asynchronous Mechanical strength and security reliability under high speed operation of motor.
It is circumferentially arranged useful in the rotor core 1, the periphery of the three of 3 and second rotor end ring of the first rotor end ring 4 In the sliver hole of installation rotor bar 2.As shown in the utility model Fig. 2, multiple sliver holes are exemplarily provided with this example And correspondingly there are multiple rotor bars 2.In this paper elaboration, sliver hole is through rotor core 1, the and of the first rotor end ring 3 Second rotor end ring 4, and the rotor core 1, the periphery of the rotor end ring 4 of the first rotor end ring 3 and second are provided in, such as This, after rotor bar 2 inserts sliver hole, rotor bar 2 is correspondingly situated at the rotor core 1, the and of the first rotor end ring 3 The periphery of second rotor end ring 4.Special instruction, in the rotor core 1, the rotor end ring 4 of the first rotor end ring 3 and second The periphery of three, circumferentially arranged sliver hole, it is not to say that sliver hole is arranged on the outside of the three so that rotor bar 2 When inserting sliver hole, rotor core 1, the rotor end ring 4 of the first rotor end ring 3 and second are wrapped in wherein, but:Sliver hole is Through rotor core 1, the rotor end ring 4 of the first rotor end ring 3 and second and it is in the inside of their threes and close to their threes Outside (outside is for rotor core 1 is located at that side of axially extending bore), rather than sliver hole position in they Outside.Preferably, sliver hole is uniformly distributed in the periphery of rotor core 1, the rotor end ring 4 of the first rotor end ring 3 and second, accordingly Ground, periphery of some rotor bars 2 along rotor core 1, the rotor end ring 4 of the first rotor end ring 3 and second are uniformly distributed.
In example of the present utility model, rotating shaft 5 is combined with interference fit with rotor core 1, is arranged on described In axially extending bore, the magnitude of interference is determined by specifically coordinating with Stress calculation, and the product of different size has different numerical value.It is described The side of rotating shaft 4 vertically is provided with the shaft shoulder 6 of projection, the shaft shoulder 6 and the first rotor left end for setting 6 corresponding side of the shaft shoulder Ring 31 is in contact.
By being overrided to form after the high magnetic conductivity silicon steel sheet punching press of multi-disc, high magnetic conductivity silicon steel sheet is conventional silicon for rotor core 1 Steel disc, such as M235-35 silicon steel sheet, the yield strength scope of conventional silicon-steel piece is 330MP-400MP, and rotor core 1 uses The high magnetic conductivity silicon steel sheet of multi-disc ensure that the electromagnetic performance of motor.The manufacture craft of rotor core 1 is not limited to this, and other can be with The method that silicon steel sheet is made to satisfactory rotor core 1 is suitable to this.The thickness of the high magnetic conductivity silicon steel sheet is preferably 0.2mm~0.5mm, the piece of required high magnetic conductivity silicon steel sheet is several to lead according to length of the rotor core along rotor core axial direction and height The thickness of magnetic silicon steel sheet determines.
The first rotor end ring 3 includes the first rotor left end ring 31 and the first rotor right-hand member ring 32, the first rotor left end Ring 31 is close to the left end that rotor core 1 is arranged on rotor core 1, and the first rotor right-hand member ring 32 is close to rotor core 1 and be arranged on turn The right-hand member of sub- iron core 1.The first rotor end ring 3 is improved and turned by being overrided to form after multi-disc high-yield strength silicon steel sheet punching press The mechanical strength of minor structure, the resistance to centrifugal force of rotor structure is set to become big, so as to improve motor operation rotating speed.The first rotor end ring 3 Manufacture craft is not limited to this, and other methods that silicon steel sheet can be made to satisfactory the first rotor end ring 3 are suitable to this.Institute The thickness for stating high-yield strength silicon steel sheet is preferably 0.5mm~1mm, and the piece of required high-yield strength silicon steel sheet is several according to first turn The thickness of length and high-yield strength silicon steel sheet of the sub- end ring along rotor core axial direction determines, the length of the first rotor end ring 3 Degree is preferably 3mm~6mm.The silicon steel sheet of high-yield strength, it is more easy to compared to high-yield strength stainless steel plate of the thickness more than 3mm Obtain, the thickness of the first rotor end ring 3 is additionally, since generally in more than 3mm, if by high-yield strength stainless steel plate material system Make, stamped is difficult, what precision was difficult to ensure that, and die life is very short;And the silicon steel sheet thinner thickness of high-yield strength, lead to Often between 0.5~1mm, it is very easy to realize that punching press is made by mould, is simple to manufacture conveniently, greatlys save and be produced into This.
Second rotor end ring 4 includes the second rotor left end ring 41 and the second rotor right-hand member ring 42, second rotor Left end ring 41 is close to the first rotor left end ring 31 and is arranged on the left end of the first rotor left end ring 31 (with accompanying drawing 1 for reference), and described the Two rotor right-hand member rings 41 are close to the first rotor right-hand member ring 31 and are arranged on the right-hand member of the first rotor right-hand member ring 31 (with accompanying drawing 1 for ginseng Examine).
Preferably, the rotor bar 2 and second rotor end ring 4 by high conductivity oxygen-free copper or copper alloy system Into the rotor bar 2 and second rotor end ring 4 are fixed together.Preferably, rotor bar 2 and second rotor End ring 4 can be fixed together by the way of welding, the material used in the rotor bar 2 and second rotor end ring 4 This is not limited to, for example, the second rotor end ring 4 can be made of aluminum.
The utility model additionally provides a kind of asynchronous machine, including the rotor structure, and rotor core 1 is by high magnetic conductance silicon Steel disc is made, and ensure that the electromagnetic performance of motor.The first rotor end ring 3 at the both ends of rotor core 1 by high yield degree silicon steel sheet It is made, improves the mechanical strength of rotor structure, the resistance to centrifugal force of rotor structure is become big, so as to improve motor operation rotating speed.Turn Sub- iron core 1 is made up of high magnetic conductance silicon steel sheet, the first rotor end ring 3 at the both ends of rotor core 1 by high yield degree silicon steel sheet system Into, the combination of the silicon steel material of two kinds of different performances, realize jointly motor electromagnetic performance and mechanical performance it is compatible, Motor is set to improve the maximum speed of motor on the premise of electromagnetic performance and mechanical performance is ensured.Wherein, silicon steel sheet easily obtains, And stamped is easily realized by grinding tool, method is simple, and cost is low.The utility model makes asynchronous machine before electromagnetic performance is ensured Put, greatly improve the mechanical strength of rotor, and then improve the maximum speed of motor, be more beneficial for realizing the high speed of design of electrical motor Change and minimize.
It is described above, only it is preferred embodiment of the present utility model, not the utility model is made any formal Limitation, although the utility model is disclosed above with preferred embodiment, but be not limited to the utility model, it is any ripe Professional and technical personnel is known, is not being departed from the range of technical solutions of the utility model, when in the technology using the disclosure above Hold the equivalent embodiment made a little change or be modified to equivalent variations, as long as being without departing from technical solutions of the utility model Hold, any simple modification, equivalent change and modification made according to the technical essence of the utility model to above example, still Belong in the range of technical solutions of the utility model.

Claims (10)

1. a kind of moving load with high speed rotor structure, it includes:
Rotor core (1), it is provided centrally with axially extending bore;
The first rotor end ring (3) made of high-yield strength silicon steel sheet, it is close to the rotor core (1), is arranged on rotor (1) both ends unshakable in one's determination;
Second rotor end ring (4), it is close to the first rotor end ring (3) end set;
Rotor bar (2), its be arranged on the rotor core (1), the first rotor end ring (3), the second rotor end ring (4) it is outer Week;
And rotating shaft (5), it is arranged in the axially extending bore.
2. moving load with high speed rotor structure according to claim 1, it is characterised in that:The rotating shaft (5) with described turn Sub- iron core (1) is combined in an interference fit.
3. moving load with high speed rotor structure according to claim 1, it is characterised in that:The rotor core (1), first The circumferentially arranged sliver hole having for installing rotor bar (2) in the periphery of rotor end ring (3) and the second rotor end ring (4), institute State rotor bar (2) and insert the sliver hole.
4. moving load with high speed rotor structure according to claim 3, it is characterised in that:The sliver hole is along the rotor The circumference of (1) unshakable in one's determination, the first rotor end ring (3) and the second rotor end ring (4) is uniformly distributed.
5. the moving load with high speed rotor structure according to any one in claim 1-4, it is characterised in that:The rotor (1) unshakable in one's determination after the high magnetic conductivity silicon steel sheet punching press of multi-disc by being overrided to form;The first rotor end ring (3) is by multi-disc high-yield strength It is overrided to form after silicon steel sheet punching press.
6. moving load with high speed rotor structure according to claim 5, it is characterised in that:The high magnetic conductivity silicon steel sheet Yield strength scope is 330MP-400MP, and the yield strength of the high-yield strength silicon steel sheet is higher than 600MP.
7. moving load with high speed rotor structure according to claim 5, it is characterised in that:The high magnetic conductivity silicon steel sheet Thickness is 0.2mm~0.5mm, and the high-yield strength silicon steel sheet thickness is 0.5mm~1mm.
8. the moving load with high speed rotor structure according to any one in claim 1-4, it is characterised in that:The rotor Sliver (2) and second rotor end ring (4) are made up of oxygen-free copper or copper alloy.
9. moving load with high speed rotor structure according to claim 8, it is characterised in that:The rotor bar (2) and institute The second rotor end ring (4) is stated to be fixed together.
A kind of 10. asynchronous machine, it is characterised in that:Including rotor structure described in any one in claim 1-9.
CN201720828958.9U 2017-07-10 2017-07-10 Moving load with high speed rotor structure and the motor comprising the rotor structure Active CN206992821U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720828958.9U CN206992821U (en) 2017-07-10 2017-07-10 Moving load with high speed rotor structure and the motor comprising the rotor structure

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Application Number Priority Date Filing Date Title
CN201720828958.9U CN206992821U (en) 2017-07-10 2017-07-10 Moving load with high speed rotor structure and the motor comprising the rotor structure

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019011235A1 (en) * 2017-07-10 2019-01-17 上海蔚来汽车有限公司 High-speed asynchronous motor rotor structure and motor comprising same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019011235A1 (en) * 2017-07-10 2019-01-17 上海蔚来汽车有限公司 High-speed asynchronous motor rotor structure and motor comprising same
CN109245348A (en) * 2017-07-10 2019-01-18 上海蔚来汽车有限公司 Moving load with high speed rotor structure and motor comprising the rotor structure

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