CN103337921A - Rotor structure for frequency-variable speed-regulating motor and frequency-variable speed-regulating motor with rotor structure - Google Patents
Rotor structure for frequency-variable speed-regulating motor and frequency-variable speed-regulating motor with rotor structure Download PDFInfo
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- CN103337921A CN103337921A CN2013102612718A CN201310261271A CN103337921A CN 103337921 A CN103337921 A CN 103337921A CN 2013102612718 A CN2013102612718 A CN 2013102612718A CN 201310261271 A CN201310261271 A CN 201310261271A CN 103337921 A CN103337921 A CN 103337921A
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Abstract
The invention discloses a rotor structure for a frequency-variable speed-regulating motor. The rotor structure for the frequency-variable speed-regulating motor comprises a main core, wherein a shaft hole is formed in a central area of the main core; a plurality of magnetic steel slots are formed in the circumference of the main core; a first magnet separating slot is formed in one end of each magnetic steel slot in a direction facing to the shaft hole; a second magnet separating slot is formed in an area between each magnetic steel slot and the edge of the main core and on the side near the first magnet separating slot; the distance between the second magnet separating slot and the central position of each magnetic steel slot is not more than half of the width of each magnetic steel slot. The rotor structure is easy to weld, convenient to manufacture and accurate to position. The frequency-variable speed-regulating motor with the rotor structure is miniaturized, so that the integral size of the motor is reduced, the weight is reduced, the cost is saved and the size of an engine room is reduced; therefore, the frequency-variable speed-regulating motor has the characteristics of compact structure, high reliability, convenience for manufacturing, high efficiency and high material utilization, large torque, long service life and low manufacturing cost.
Description
Technical field
The present invention relates to a kind of frequency-conversion and speed-regulation motor for elevator traction machine, be specially the rotor structure that this frequency-conversion and speed-regulation motor has.
Background technology
What traditional elevator traction machine motor adopted is the external rotor variable frequency adjustable-speed motor, motor generally adopts the welded disk rotor structure, be to be shaped to the monolithic rotor punching by rectangular band shape or square silicon steel plate according to the size die cut, multi-disc laminates welding fabrication more then.
The welded disk rotor structure can obtain higher air-gap flux density, and greatly possibility improves stock utilization, but there are following points for attention simultaneously again in this structure:
1, the assembling difficulty of permanent magnet: the permanent magnet assembling of this structure, it is fine that the external diameter turning degree of depth, rotating speed, the amount of feeding all will be controlled, otherwise because the high speed of work piece rotation, can cause magnet steel groove size distortion when lathe tool carries out turning to a great extent, thereby cause magnet steel normally to press-fit.Need reprocess magnet steel groove position by instrument, and then press-fit magnet steel by rule, magnet steel installs back recycling screw rod axial two end cover plate is connected with screw rod, and difficulty strengthens.
2, permanent magnet reliability: the Nd-Fe-B magnet steel of using at present is the material of very easy oxidation more, smog, humidity etc. all can exert an influence to its performance, particularly in and the magneto that environment for use is abominable relatively lower at degree of protection, the possibility of permanent magnet oxidation can increase, reduced useful life, simultaneously, the rotor structure of welded type need carry out very strict design to magnetic circuit, and assurance relative dimensions, if the parts machining accuracy is on the low side, the performance of motor is subjected to bigger influence.
Traditional traction machine motor needs bigger rotary space to make the machine room size also become big because the particularity of its structure makes that the whole volume of motor is big, and weight is higher, and overload capacity is low, cost savings are limited thereupon in the installation process.
Summary of the invention
The object of the present invention is to provide for the rotor structure of frequency-conversion and speed-regulation motor and the frequency-conversion and speed-regulation motor with this rotor structure, can improve useful life, raising stock utilization, improve motor efficiency, reduction material and the manufacturing cost of motor.
Above-mentioned purpose is achieved through the following technical solutions:
The rotor structure that is used for frequency-conversion and speed-regulation motor, include main core, be formed with the axis hole that is arranged on main core central area, it is characterized in that: be provided with a plurality of magnet steel grooves along main core circumference, side at the magnet steel groove is provided with first magnet isolation tank towards the axis hole direction, in the zone between magnet steel groove and main core edge, and be provided with second magnet isolation tank near a side of first magnet isolation tank, wherein second magnet isolation tank and magnet steel groove center location gap are no more than 1/2nd of magnet steel well width.
In above-mentioned the magnet steel groove and the zone between the axis hole, be provided with the 3rd magnet isolation tank.
The first above-mentioned magnet isolation tank is the extension of magnet steel groove, and both are interconnected.
The second above-mentioned magnet isolation tank is flat ellipse.
The 3rd above-mentioned magnet isolation tank is circular.
Be provided with the projection of locating when twice are convenient to the magnet steel embedding in the above-mentioned magnet steel groove.
Be provided with lightening hole in above-mentioned magnet steel groove and the zone between the axis hole.
Above-mentioned main core excircle is provided with for the fixed-type argon welding groove of rotor punching welding.
A kind of frequency-conversion and speed-regulation motor with above-mentioned rotor structure, include main shaft, front end housing, bearing, junction box assembly, rotor, stator core, support, rear end cap and encoder, rotor is arranged on the main shaft by bearing, rotor and stator core pass through front end housing, rear end cap, support and junction box assembly link together and pass through bolt, having refilled encoder on the main shaft fixes by bolt and rear end cap, it is characterized in that: rotor includes main core, be formed with the axis hole that is arranged on main core central area, be provided with a plurality of magnet steel grooves along main core circumference, side at the magnet steel groove is provided with first magnet isolation tank towards the axis hole direction, in the zone between magnet steel groove and main core edge, and be provided with second magnet isolation tank near a side of first magnet isolation tank, wherein second magnet isolation tank and magnet steel groove center location gap are no more than 1/2nd of magnet steel well width.
Adopting the rotor structure of said structure, the motor moment of inertia is reduced greatly, is a guarantee to the stability of speed governing.The frequency-conversion and speed-regulation motor that it possesses this rotor structure has following advantage:
1, loss is little, efficient is high, power factor is high;
2, volume is little, in light weight, stock utilization is high, simple in structure, have and increase the service life and easily manufactured characteristics;
3, strong, the anti-stall ability of overload capacity is strong;
4, the shape and size of motor can be versatile and flexible.
Description of drawings
Fig. 1 is rotor sectional view of the present invention;
Fig. 2 is A indication position partial enlarged drawing among Fig. 1;
Fig. 3 is a kind of example electric motor structure schematic diagram of the present invention.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
As shown in Figure 1, 2, the rotor structure that is used for frequency-conversion and speed-regulation motor, include main core 1, be formed with the axis hole 2 that is arranged on main core 1 central area, be provided with a plurality of magnet steel grooves 3 along main core 1 circumference, being provided with first magnet isolation tank, 4, the first magnet isolation tanks at a side of magnet steel groove 3 towards the axis hole direction is the extension of magnet steel groove, and both are interconnected.In the zone between magnet steel groove 3 and main core edge, and be provided with second magnet isolation tank 5 near a side of first magnet isolation tank 4, wherein second magnet isolation tank 5 is flat ellipse with 1/2nd, second magnet isolation tank 5 that magnet steel groove 3 center spacings surpass magnet steel groove 3 width.In the zone between magnet steel groove 3 and the axis hole 2, it is circular being provided with the 3rd magnet isolation tank 6, the three magnet isolation tanks 6.
Be provided with the projection 31 of locating when twice are convenient to magnet steel 9 embeddings in the above-mentioned magnet steel groove 3, protruding 31 symmetries are positioned at the two ends of magnet steel groove 3.Be provided with lightening hole 7 in the zone between magnet steel groove 3 and the axis hole 2.Be provided with for the fixed-type argon welding groove 8 of rotor punching welding at main core 1 excircle.By forming one group mode greater than 2 blocks of identical magnet steel, can obtain higher air-gap flux density at each utmost point magnet steel 9 of the present invention, help to improve efficiency of motor thereby improve stock utilization.
As shown in Figure 3, a kind of frequency-conversion and speed-regulation motor with above-mentioned rotor structure, include main shaft 11, front end housing 12, deep groove ball bearing 13, junction box assembly 14, rotor 15, stator core 16, support 17, rear end cap 18, self-aligning bearing 19 and encoder 20, rotor 15 is arranged on the main shaft 11 by bearing 13,19, rotor 15 and stator core 16 link together by front end housing 12, rear end cap 18, support 17 and junction box assembly 14 and by bolt, it is fixing by bolt and rear end cap 18 to have refilled encoder 20 on the main shaft 11.
Welded disk rotor provided by the invention is simple in structure, easily manufactured, accurate positioning.The frequency-conversion and speed-regulation motor that possesses rotor structure of the present invention, realized motor miniaturization, make the overall volume of motor dwindle, weight saving, saved cost, the machine room size reduces and dwindles, therefore have compact conformation, reliability height, easily manufactured, efficient is high and stock utilization is high, torque is big, the life-span is long, the characteristics of low cost of manufacture.
The above, it only is preferred embodiments of the present invention, be not that any pro forma restriction is done in invention, every foundation know-why of the present invention still belongs in the scope of technical solution of the present invention any simple modification, equivalent variations or modification that above embodiment does.
Claims (9)
1. the rotor structure that is used for frequency-conversion and speed-regulation motor, include main core, be formed with the axis hole that is arranged on main core central area, it is characterized in that: be provided with a plurality of magnet steel grooves along main core circumference, side at the magnet steel groove is provided with first magnet isolation tank towards the axis hole direction, in the zone between magnet steel groove and main core edge, and be provided with second magnet isolation tank near a side of first magnet isolation tank, wherein second magnet isolation tank and magnet steel groove center location gap are no more than 1/2nd of magnet steel well width.
2. the rotor structure of frequency-conversion and speed-regulation motor as claimed in claim 1, it is characterized in that: the first above-mentioned magnet isolation tank is the extension of magnet steel groove, and both are interconnected.
3. the rotor structure of frequency-conversion and speed-regulation motor as claimed in claim 1 or 2 is characterized in that: in above-mentioned the magnet steel groove and the zone between the axis hole, be provided with the 3rd magnet isolation tank.
4. the rotor structure of frequency-conversion and speed-regulation motor as claimed in claim 1, it is characterized in that: the second above-mentioned magnet isolation tank is flat ellipse.
5. the rotor structure of frequency-conversion and speed-regulation motor as claimed in claim 3 is characterized in that: the 3rd above-mentioned magnet isolation tank is for circular.
6. the rotor structure of frequency-conversion and speed-regulation motor as claimed in claim 1 is characterized in that: be provided with the projection of locating when twice are convenient to the magnet steel embedding in the above-mentioned magnet steel groove.
7. the rotor structure of frequency-conversion and speed-regulation motor as claimed in claim 1 is characterized in that: be provided with lightening hole in above-mentioned magnet steel groove and the zone between the axis hole.
8. the rotor structure of frequency-conversion and speed-regulation motor as claimed in claim 1 is characterized in that: above-mentioned main core excircle is provided with for the fixed-type argon welding groove of rotor punching welding.
9. frequency-conversion and speed-regulation motor with rotor structure as claimed in claim 1, include main shaft, front end housing, bearing, junction box assembly, rotor, stator core, support, rear end cap and encoder, rotor is arranged on the main shaft by bearing, rotor and stator core pass through front end housing, rear end cap, support and junction box assembly link together and pass through bolt, having refilled encoder on the main shaft fixes by bolt and rear end cap, it is characterized in that: described rotor includes main core, be formed with the axis hole that is arranged on main core central area, be provided with a plurality of magnet steel grooves along main core circumference, side at the magnet steel groove is provided with first magnet isolation tank towards the axis hole direction, in the zone between magnet steel groove and main core edge, and be provided with second magnet isolation tank near a side of first magnet isolation tank, wherein second magnet isolation tank and magnet steel groove center location gap are no more than 1/2nd of magnet steel well width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102612718A CN103337921A (en) | 2013-06-27 | 2013-06-27 | Rotor structure for frequency-variable speed-regulating motor and frequency-variable speed-regulating motor with rotor structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102612718A CN103337921A (en) | 2013-06-27 | 2013-06-27 | Rotor structure for frequency-variable speed-regulating motor and frequency-variable speed-regulating motor with rotor structure |
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| CN103337921A true CN103337921A (en) | 2013-10-02 |
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| CN2013102612718A Pending CN103337921A (en) | 2013-06-27 | 2013-06-27 | Rotor structure for frequency-variable speed-regulating motor and frequency-variable speed-regulating motor with rotor structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767306A (en) * | 2015-04-29 | 2015-07-08 | 南车株洲电力机车研究所有限公司 | Motor rotor and iron core thereof |
| CN105245045A (en) * | 2015-11-16 | 2016-01-13 | 苏州西艾杰电机有限公司 | Permanent-magnet embedded type rotor assembly |
| CN108183566A (en) * | 2017-12-19 | 2018-06-19 | 宁波安信数控技术有限公司 | A kind of low inertia rotor of magneto |
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| US20080224558A1 (en) * | 2007-03-15 | 2008-09-18 | A. O. Smith Corporation | Interior permanent magnet motor including rotor with flux barriers |
| CN201286055Y (en) * | 2008-10-20 | 2009-08-05 | 李树国 | Salient pole permanent magnet synchronous motor |
| CN101584099A (en) * | 2007-02-22 | 2009-11-18 | 大金工业株式会社 | Motor, and compressor |
| CN102017367A (en) * | 2008-05-08 | 2011-04-13 | 大金工业株式会社 | Field element |
| CN102916544A (en) * | 2011-08-01 | 2013-02-06 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor rotor structure, permanent-magnet synchronous motor and variable-frequency compressor |
| CN203301270U (en) * | 2013-06-27 | 2013-11-20 | 信质电机股份有限公司 | Rotor structure and frequency conversion speed-regulating motor equipped with same |
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2013
- 2013-06-27 CN CN2013102612718A patent/CN103337921A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101584099A (en) * | 2007-02-22 | 2009-11-18 | 大金工业株式会社 | Motor, and compressor |
| US20080224558A1 (en) * | 2007-03-15 | 2008-09-18 | A. O. Smith Corporation | Interior permanent magnet motor including rotor with flux barriers |
| CN102017367A (en) * | 2008-05-08 | 2011-04-13 | 大金工业株式会社 | Field element |
| CN201286055Y (en) * | 2008-10-20 | 2009-08-05 | 李树国 | Salient pole permanent magnet synchronous motor |
| CN102916544A (en) * | 2011-08-01 | 2013-02-06 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor rotor structure, permanent-magnet synchronous motor and variable-frequency compressor |
| CN203301270U (en) * | 2013-06-27 | 2013-11-20 | 信质电机股份有限公司 | Rotor structure and frequency conversion speed-regulating motor equipped with same |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767306A (en) * | 2015-04-29 | 2015-07-08 | 南车株洲电力机车研究所有限公司 | Motor rotor and iron core thereof |
| CN105245045A (en) * | 2015-11-16 | 2016-01-13 | 苏州西艾杰电机有限公司 | Permanent-magnet embedded type rotor assembly |
| CN108183566A (en) * | 2017-12-19 | 2018-06-19 | 宁波安信数控技术有限公司 | A kind of low inertia rotor of magneto |
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Application publication date: 20131002 |