CN203504377U - Outer rotor permanent magnetic synchronous magnetic resistance type traction driving device - Google Patents
Outer rotor permanent magnetic synchronous magnetic resistance type traction driving device Download PDFInfo
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- CN203504377U CN203504377U CN201320529225.7U CN201320529225U CN203504377U CN 203504377 U CN203504377 U CN 203504377U CN 201320529225 U CN201320529225 U CN 201320529225U CN 203504377 U CN203504377 U CN 203504377U
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- permanent magnet
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- drive unit
- stator core
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- Permanent Magnet Type Synchronous Machine (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
Abstract
The utility model discloses an outer rotor permanent magnetic synchronous magnetic resistance type traction driving device which comprises a stator and a rotor. The stator comprises a fixing base and a stator core installed on the fixing base, the rotor comprises a brake wheel and a rotor core fixed to one side of the brake wheel, a plurality of first grooves are arranged on the inner circumferential surface of the rotor core, a plurality of second grooves are arranged on the outer circumferential surface of the stator core, and at least two permanent magnets are installed on the stator core. When the axis of the rotor core is not coincided with the axis of a magnetic pole of the stator core, magnetic resistance acts on the rotor and a torque is generated so that the rotor moves to a position with the minimum magnetic resistance, the axis of the rotor core is coincided with the axis of the magnetic pole of the stator core, the torque pulsation of the rotor is reduced, the noise is lowered, and the comfort of elevator taking is improved. When an exciting winding is powered on, parallel magnetic paths are formed by a path of an electro-magnetic magnetic line of force and a path of a permanent magnet magnetic line of force, and two magnetic fields and the rotor are superimposed at an air gap portion so that an air gap magnetic field is improved, the air gap total magnetic flux is increased, and the noise is reduced.
Description
Technical field
The utility model relates to drive unit for lift field, particularly relates to a kind of external rotor permanent magnet synchronous reluctance formula traction drive unit.
Background technology
Traction drive unit is drive unit main in elevator, and for driving lift car to move up and down, the operation stability of traction drive unit directly determines the stability of lift car, thereby can have influence on the comfortableness that passenger takes.Nowadays to the fail safe of elevator and the comfortableness taken, require more and more higher, therefore, also more and more higher to the requirement of traction drive unit.
What general traction drive unit adopted is permagnetic synchronous motor, in this traction drive unit, need to adopt a large amount of rare-earth permanent magnets, when rare-earth permanent magnet consumption is more, can cause cost very high, increased the burden of enterprise, and need to rare-earth permanent magnet is very firmly fixing, increased the structural complexity of drive unit.Also have a kind of drive unit that draws that adopts switched reluctance variable speed machine, the torque pulsation when work of this traction drive unit is larger, and output torque is less, and noise is very large, has reduced the comfortableness of taking.
Summary of the invention
The purpose of this utility model is to provide a kind of with low cost, external rotor permanent magnet synchronous reluctance formula traction drive unit that noise is little.
In order to realize the purpose of this utility model, the technical scheme of taking is:
A kind of external rotor permanent magnet synchronous reluctance formula traction drive unit, comprise stator and rotor, stator comprises holder and is installed on the stator core on holder, rotor comprises braked wheel and is fixed on the rotor core of braked wheel one side, the inner circumferential surface of rotor core is provided with a plurality of the first grooves, the external peripheral surface of stator core is provided with a plurality of the second grooves, and at least two permanent magnets are arranged on stator core.
When rotor core rotates, on rotor core and stator core, be equipped with groove, between adjacent the first groove, form the first projection, between adjacent the second groove, form the second projection, each convexes to form a magnetic pole, thereby makes to form between stator and rotor double-salient-pole structure.In the second projection, winding is installed, when rotor axis does not overlap with the axis of magnetic pole of the stator, just having reluctance force acts on rotor and produces torque and make it be tending towards the position of magnetic resistance minimum, even the dead in line of the axis of rotor and magnetic pole of the stator, rare-earth permanent magnet has been installed in stator core, when excitation winding no power, the permanent magnet magnetic line of force is not by air gap and along stator pole body, stator yoke portion closure.When coil windings is switched on, the path of the electricity excitation magnetic line of force and the path of the permanent magnet magnetic line of force form parallel circuits, two magnetic fields superpose mutually at air gap place and rotor, improved air-gap field, by the break-make of winding current, controlled the path of the permanent magnet magnetic line of force and control with the torque that size realizes motor.Suppressed the torque pulsation of motor, reduce electromagnetic noise, increase output torque, increased air gap total magnetic flux, improved the output torque of drive unit, adopt in this way, permanent magnet is mainly used in improving air-gap field, and the amount of the permanent magnet that need to use seldom, cost is lower, and permanent magnet is fixed and also become accordingly simple, make whole driving device structure simpler, can meet large-scale production.
Below technical scheme is further illustrated:
Preferably, this drive unit is motor, and number of motor phases is q, and described the first groove quantity is Z, and the second groove quantity is D, and it meets following formula: D=2mq, Z=(1 ± 1/q) D; In formula, m=1,2 ..., n(n is positive integer).The quantity of winding can be generally 1,2,3,4,5,6,7, number of phases of each corresponding motor of group winding, when the quantity of winding, the quantity of the quantity of the first groove, the second groove while meeting above-mentioned formula, just can reach good effect, make that drive unit noise is lower, torque pulsation is less, elevator ride is more comfortable.
Preferably, described number of motor phases is 3, and described the first groove quantity is 32, and the quantity of described the second groove is 24.While adopting above-mentioned parameter, effect is better, and elevator ride is more comfortable.
Preferably, external rotor permanent magnet synchronous reluctance formula traction drive unit also comprises brake, brake arm, and brake arm one end is rotatable to be installed on holder, and the other end is connected with brake by elastic device.
Preferably, described elastic device is spring.Spring is widely used, cheap, when braking, and brake dead electricity, the spring in compressive state recovers deformation, pulls brake arm to rotate, and brake arm touches braked wheel, thereby braked wheel is stopped operating, and realizes braking.
Preferably, described brake is hub type brake, board-like brake, disc brake or disk brake.According to different occasions and needs, can select different brakes, facilitate user to select.
Preferably, described braked wheel opposite side stretches out holder, stretches out on holder wheel face partly and have grooving on braked wheel.Grooving on braked wheel is used for placing hoist ropes, and braked wheel has the function of braking and traction concurrently simultaneously, has improved the utilance of braked wheel.
Preferably, described permanent magnet is installed on the stator core of bottom position of described the second groove.Such mounting process is simple, easy for installation.
Preferably, external rotor permanent magnet synchronous reluctance formula traction drive unit also comprises for detection of the detection control apparatus with controlling rotor operation state.The existence of detection control apparatus facilitates user to detect at any time and control the running status of rotor, makes drive unit safety controlled.
Preferably, described checkout gear comprises encoder, control system, encoder and control system electrical connection.Encoder is for detection of the running status of rotor, and the signal detecting is sent to control system, and control system is controlled the running status of rotor.
Preferably, at least two described permanent magnets are evenly arranged on stator core.When permanent magnet is uniformly distributed, its corresponding magnetic field is also uniformly distributed, and is that drive unit operation is more stable, and torque pulsation is lower, and noise is less.
Preferably, described permanent magnet is embedded in the stator of the second bottom portion of groove.This mode, simple in structure, it is more quick that permanent magnet is installed, and is applicable to large-scale production.
Preferably, described permanent magnet quantity is four.During four permanent magnets, effect is better.
Preferably, the relative side magnetic pole of adjacent permanent magnet is identical.
Selected, described permanent magnet is rare-earth permanent magnet.
Preferably, described stator core is made by permeability magnetic material.
Preferably, described stator core is comprised of multi-disc stator core stamping sheet.
Preferably, described rotor core is made by permeability magnetic material.
Preferably, described rotor core is comprised of multi-disc rotor iron core lamination.
The utility model has the advantages that:
When rotor core rotates, on rotor core and stator core, be equipped with groove, between adjacent the first groove, form the first projection, between adjacent the second groove, form the second projection, each convexes to form a magnetic pole, thereby makes to form between stator and rotor double-salient-pole structure.In the second projection, winding is installed, when rotor axis does not overlap with the axis of magnetic pole of the stator, just having reluctance force acts on rotor and produces torque and make it be tending towards the position of magnetic resistance minimum, even the dead in line of the axis of rotor and magnetic pole of the stator, rare-earth permanent magnet has been installed in stator core, when excitation winding no power, the permanent magnet magnetic line of force is not by air gap and along stator pole body, stator yoke portion closure.When coil windings is switched on, the path of the electricity excitation magnetic line of force and the path of the permanent magnet magnetic line of force form parallel circuits, two magnetic fields superpose mutually at air gap place and rotor, improved air-gap field, by the break-make of winding current, controlled the path of the permanent magnet magnetic line of force and control with the torque that size realizes motor.Suppressed the torque pulsation of motor, reduce electromagnetic noise, increase output torque, increased air gap total magnetic flux, improved the output torque of drive unit, adopt in this way, permanent magnet is mainly used in improving air-gap field, and the amount of the permanent magnet that need to use seldom, cost is lower, and permanent magnet is fixed and also become accordingly simple, make whole driving device structure simpler, can meet large-scale production.
Accompanying drawing explanation
Fig. 1 is the cutaway view of the utility model external rotor permanent magnet synchronous reluctance formula traction drive unit;
Fig. 2 is the left view of the utility model external rotor permanent magnet synchronous reluctance formula traction drive unit;
Fig. 3 is the structural representation of stator, rotor in the utility model external rotor permanent magnet synchronous reluctance formula traction drive unit.
Description of reference numerals:
100. holders, 200. braked wheels, 201. groovings, 300. stator cores, 301. second grooves, 302. second projections, 303. stator core stamping sheets, 400. rotor cores, 401. first grooves, 402. first projections, 500. rare-earth permanent magnets, 600. windings, 700. brakes, 800. brake arms, 900. springs, 1000. encoders, 1100. rotating shafts, 1200. bearings.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated:
Consult Fig. 1-3, in embodiment of the present utility model, a kind of external rotor permanent magnet synchronous reluctance formula traction drive unit, comprise stator and rotor, stator comprises holder 100 and is installed on the stator core 300 on holder 100, rotor comprises braked wheel 200 and is fixed on the rotor core 400 of braked wheel 200 1 sides, the inner circumferential surface of rotor core 400 is provided with a plurality of the first grooves 401, the external peripheral surface of stator core 300 is provided with a plurality of the second grooves 301, and at least two permanent magnets are arranged on stator core 300.This permanent magnet is rare-earth permanent magnet 500.Described drive unit is motor, on described stator core 300, winding 600 is housed, described winding 600 is excitation winding, 600 groups of numbers of winding are q, corresponding number of motor phases is q, and described the first groove 401 quantity are Z, and the second groove 301 quantity are D, it meets following formula: D=2mq, Z=(1 ± 1/q) D; In formula, m=1,2 ..., n(n is positive integer).In the present embodiment, winding 600 is three-phase, and described the first groove 401 quantity are 32, and the quantity of described the second groove 301 is 24.
Braked wheel 200 can rotate with rotor core 400, on rotor core 400 and stator core 300, be equipped with groove, between adjacent the first groove 401, form the first projection 402, between adjacent the second groove 301, form the second projection 302, each convexes to form a magnetic pole, thereby makes to form double-salient-pole structure between stator core 300 and rotor core 400.In the second projection 302, winding 600 is installed, when the axis of rotor core 400 and the axis of stator core 300 magnetic poles do not overlap, just having reluctance force acts on rotor core 400 and produces torque and make it be tending towards the position of magnetic resistance minimum, even the dead in line of the axis of rotor core 400 and stator core 300 magnetic poles, in stator core 300, rare-earth permanent magnet has been installed, when winding no power, the permanent magnet magnetic line of force is not by air gap and along stator pole body, stator yoke portion closure.When winding 600 energising, the path of the electricity excitation magnetic line of force and the path of rare-earth permanent magnet 500 magnetic lines of force form parallel circuits, two magnetic fields superpose mutually at air gap place and rotor core 400, improved air-gap field, by the break-make of winding 600 electric currents, control the path and size of the permanent magnet magnetic line of force, thereby realize the control of motor, the utility model has suppressed the torque pulsation of motor, reduce electromagnetic noise, increase output torque, increased air gap total magnetic flux, reduced noise, improved the output torque of drive unit simultaneously, adopt in this way, rare-earth permanent magnet 500 is mainly used in improving air-gap field, the amount of the permanent magnet that need to use seldom, cost is lower, and rare-earth permanent magnet 500 is fixed and also become accordingly simple, make whole driving device structure simpler, can meet large-scale production.
Rotor also comprises rotating shaft 1100 and bearing 1200, and rotating shaft 1100 one end are fixedly connected with braked wheel 200, is provided with the both sides that 1200, two groups of bearings 1200 of two groups of bearings lay respectively at holder 100 between rotating shaft 1100 and holder 100.
External rotor permanent magnet synchronous reluctance formula traction drive unit also comprises brake 700, brake arm 800, and brake arm 800 one end are rotatable to be installed on holder 100, and the other end is connected with brake 700 by elastic device.Described elastic device is spring 900.The quantity of brake arm 800 and spring 900 is two, and two brake arms 800 are installed on respectively the both sides of braked wheel 200, and brake arm 800 inner sides are circular arc, and this arc diameter and braked wheel 200 diameters adapt.Brake 700 is hub type brake in the present embodiment, and brake 700 can also be board-like brake, disc brake or disk brake in other embodiments.Encoder 1000 is installed in rotating shaft 1100.
Braked wheel 200 stretches out holder 100 away from rotor core 400 1 sides, stretches out on the wheel face of holder 100 parts and have grooving 201 on braked wheel 200.In other embodiments, external rotor permanent magnet synchronous reluctance formula traction drive unit can also be traction sheave and braked wheel split design, has grooving on traction sheave, and traction sheave is connected to braked wheel 200 away from a side of stator core 400.
External rotor permanent magnet synchronous reluctance formula traction drive unit also comprises for detection of the detection control apparatus with controlling the running status of rotor core 400.This control checkout gear comprises encoder 1000, control system, encoder 1000 and control system electrical connection.
The quantity of described rare-earth permanent magnet 500 is at least two, in the present embodiment, is preferably four, and four rare-earth permanent magnets 500 are evenly arranged on stator core 300.Rare-earth permanent magnet 500 adopts the mode embedding to be fixed in the stator core 300 of the second groove 301 bottoms.The side magnetic pole that adjacent rare-earth permanent magnet 500 is relative is identical.
The above embodiment has only expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (9)
1. an external rotor permanent magnet synchronous reluctance formula traction drive unit, it is characterized in that, comprise stator and rotor, stator comprises holder and is installed on the stator core on holder, rotor comprises braked wheel and is fixed on the rotor core of braked wheel one side, the inner circumferential surface of rotor core is provided with a plurality of the first grooves, and the external peripheral surface of stator core is provided with a plurality of the second grooves, and at least two permanent magnets are arranged on stator core.
2. external rotor permanent magnet synchronous reluctance formula traction drive unit according to claim 1, is characterized in that, described the first groove quantity is 32, and the quantity of described the second groove is 24.
3. external rotor permanent magnet synchronous reluctance formula traction drive unit according to claim 1 and 2, is characterized in that, also comprises brake, brake arm, and brake arm one end is rotatable to be installed on holder, and the other end is connected with brake by elastic device.
4. external rotor permanent magnet synchronous reluctance formula traction drive unit according to claim 1 and 2, is characterized in that, described permanent magnet is installed on the stator core of bottom position of described the second groove.
5. external rotor permanent magnet synchronous reluctance formula traction drive unit according to claim 1 and 2, is characterized in that, also comprises for detection of the detection control apparatus with controlling the running status of rotor.
6. external rotor permanent magnet synchronous reluctance formula traction drive unit according to claim 1, is characterized in that, at least two described permanent magnets are along being evenly arranged on stator core.
7. external rotor permanent magnet synchronous reluctance formula traction drive unit according to claim 6, is characterized in that, described permanent magnet quantity is four.
8. according to the external rotor permanent magnet synchronous reluctance formula traction drive unit described in claim 6 or 7, it is characterized in that, the side magnetic pole that adjacent described permanent magnet is relative is identical.
9. according to the external rotor permanent magnet synchronous reluctance formula traction drive unit described in claim 6 or 7, it is characterized in that, described permanent magnet is rare-earth permanent magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320529225.7U CN203504377U (en) | 2013-08-28 | 2013-08-28 | Outer rotor permanent magnetic synchronous magnetic resistance type traction driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320529225.7U CN203504377U (en) | 2013-08-28 | 2013-08-28 | Outer rotor permanent magnetic synchronous magnetic resistance type traction driving device |
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| Publication Number | Publication Date |
|---|---|
| CN203504377U true CN203504377U (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320529225.7U Expired - Lifetime CN203504377U (en) | 2013-08-28 | 2013-08-28 | Outer rotor permanent magnetic synchronous magnetic resistance type traction driving device |
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| Country | Link |
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| CN (1) | CN203504377U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103457430A (en) * | 2013-08-28 | 2013-12-18 | 日立电梯电机（广州）有限公司 | Outer rotor permanent magnetic synchronous magnetic resistance type traction driving device |
| CN110535312A (en) * | 2019-07-24 | 2019-12-03 | 安徽省奥斯特机电设备有限公司 | A kind of high-strength mining large torque directly drives outer rotor motor synchronizing electric drum |
-
2013
- 2013-08-28 CN CN201320529225.7U patent/CN203504377U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103457430A (en) * | 2013-08-28 | 2013-12-18 | 日立电梯电机（广州）有限公司 | Outer rotor permanent magnetic synchronous magnetic resistance type traction driving device |
| CN110535312A (en) * | 2019-07-24 | 2019-12-03 | 安徽省奥斯特机电设备有限公司 | A kind of high-strength mining large torque directly drives outer rotor motor synchronizing electric drum |
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| GR01 | Patent grant | ||
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Granted publication date: 20140326 |