CN104979943A - High-speed external rotor traction machine with magnetic suspension structure - Google Patents
High-speed external rotor traction machine with magnetic suspension structure Download PDFInfo
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- CN104979943A CN104979943A CN201510399423.XA CN201510399423A CN104979943A CN 104979943 A CN104979943 A CN 104979943A CN 201510399423 A CN201510399423 A CN 201510399423A CN 104979943 A CN104979943 A CN 104979943A
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- magnetic
- rotor assembly
- main shaft
- bearing
- stator coil
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Abstract
The invention discloses a high-speed external rotor traction machine with magnetic suspension structure. The traction machine comprises a rotor assembly bearing the load of an elevator compartment and a main shaft positioned in the rotor assembly. A bearing that allows the rotor assembly to rotate relative freely on the main shaft is arranged between the main shaft and the rotor assembly, and at least one set of magnetic suspended structure is arranged between the main shaft and the rotor assembly. The magnetic suspension structure comprises a magnetic steel sleeving and fixed on the main shaft, and the magnetic steel is sleeved with a stator coil. The stator coil is fixedly connected with the inner side surface of the rotor assembly. The magnetic polarity of the upper semi-circle of the magnetic steel is opposite to that of the lower semi-circle of the magnetic steel, and the magnetic polarity of the stator coil, after being energized is the same with the magnetic polarity of the upper semi-circle of the magnetic steel. The traction machine employs a magnetic suspension structure to offset the radial load applied on the bearing, thereby greatly prolonging the service lifetime of the bearing, lowering the elevator operation and maintenance cost and improving product quality.
Description
technical field:
the present invention relates to the high speed outer rotor tractor on a kind of elevator.
background technology:
Along with the raising of people's living standard, the scope of application and the place of elevator also get more and more, thus operation and maintenance cost how is reduced, improve the attention that service efficiency is also more and more subject to industry field, and elevator traction machine is the capital equipment facility of elevator power system, the existing external rotor elevator traction machine used, the load of car counterweight is all born by traction machine bearing, thus when traction machine operationally can strengthen the wearing and tearing to bearing, thus not only make the requirement of bearing very high, but also can make significantly reduce the useful life of bearing, then operation and the maintenance cost of elevator is increased.
summary of the invention:
it is simple and effectively can reduce bearing wear that the technical problem to be solved in the present invention is to provide a kind of structure, improves the magnetic-suspension high-speed outer rotor tractor in its useful life.
For solving the problem, the present invention is achieved by the following technical solutions:
A kind of magnetic-suspension high-speed outer rotor tractor, there is the rotor assembly of carrying elevator lift car load and be positioned at the main shaft of rotor assembly, the bearing that rotor assembly can be made to rotate relatively freely on main shaft is provided with between described main shaft and rotor assembly, at least one group of magnetic suspension structure is also provided with between described main shaft and rotor assembly, described magnetic suspension structure comprises a socket and to be fixed on main shaft and the rounded magnet steel of outward appearance, go back in described magnet steel outside ring set have one with the stator coil of the circle of its lateral surface matched in clearance, described stator coil is fixedly connected with rotor assembly medial surface, the magnetic pole of described magnet steel upper semi-circle is contrary with the magnetic pole of lower half circle, magnetic pole after described stator coil energising is identical with the upper semi-circle magnetic pole of described magnet steel.
As preferably, the quantity of described magnetic suspension structure is set to two groups and is arranged at the two sides of described bearing respectively.
As preferably, outside described main shaft and inside rotor assembly, be respectively equipped with the draw-in groove fixed for magnet steel and stator coil.
Compared with prior art, usefulness of the present invention is: this electromagnetic suspension high speed outer rotor tractor adopts magnetic suspension structure to offset the radial load suffered by bearing, thus the useful life of bearing is above improved largely, also reduce elevator operation and maintenance cost, improve the quality of products.
accompanying drawing illustrates:
Below in conjunction with accompanying drawing, the present invention is further described:
Fig. 1 is side of the present invention broken section structural representation
Fig. 2 is the close-up schematic view at magnetic suspension structure A place of the present invention
Fig. 3 is that magnetic suspension structure A place of the present invention is along A-A to sectional structure schematic diagram
In figure: 1, rotor assembly 2, main shaft 3, bearing 4, magnetic suspension structure 41, magnet steel 42, stator coil 5, draw-in groove
embodiment:
Describe the present invention below in conjunction with the drawings and the specific embodiments:
A kind of magnetic-suspension high-speed outer rotor tractor, as shown in Figure 1, there is the rotor assembly 1 of carrying elevator lift car load and be positioned at the main shaft 2 of rotor assembly 1, the bearing 3 that rotor assembly 1 can be made to rotate relatively freely on main shaft 2 is provided with between described main shaft 2 and rotor assembly 1, at least one group of magnetic suspension structure 4 is also provided with between described main shaft 2 and rotor assembly 1, the radial load be subject to for making described bearing 3 fully can be offset by the magnetic force of described magnetic suspension structure 4, the quantity of described magnetic suspension structure 4 is set to two groups and is arranged at the two sides of described bearing 3 respectively, as Fig. 2, shown in Fig. 3, described magnetic suspension structure 4 comprises a socket and to be fixed on main shaft 2 and the rounded magnet steel 41 of outward appearance, go back in described magnet steel 41 outside ring set have one with the stator coil 42 of the circle of its lateral surface matched in clearance, described stator coil 42 is fixedly connected with rotor assembly 1 medial surface, the magnetic pole of described magnet steel 41 upper semi-circle is contrary with the magnetic pole of lower half circle, magnetic pole after described stator coil 42 is energized is identical with the upper semi-circle magnetic pole of described magnet steel 41, for strengthen described magnetic suspension structure 4 steadiness and when traction machine runs difficult drop-off, the draw-in groove 5 fixed for magnet steel 41 and stator coil 42 is respectively equipped with outside described main shaft 2 and inside rotor assembly 1.
In specific implementation process, a magnetic suspension structure 4 be made up of magnet steel 41 and stator coil 42 is respectively equipped with in described bearing 3 both sides, load due to lift car counterweight all acts on the rotor assembly 1 of traction machine, and then pass to bearing 3 by rotor assembly 1, thus make bearing 3 be subject to very large radial load, when traction machine is static, bearing 3 support rotor assembly 1, bearing 3 is subject to dead load, when traction machine runs, and stator coil 42 is energized simultaneously, in the present embodiment, magnetic pole after stator coil 42 is energized is N, and the magnetic pole of magnet steel 41 upper semi-circle is set to N, the magnetic pole of lower half circle is set to S, therefore, when traction machine runs and stator coil 42 is energized time, stator coil 42 produces repulsion with the N pole of upper semi-circle magnet steel 41, suction is produced with the S pole of lower half circle magnet steel 41, again because magnet steel 41 is that ring set is fixed on main shaft 2 and stator coil 42 is fixed on rotor assembly 1, therefore according to the interaction principle of power, these two power can produce active force upwards to rotor assembly 1, and it is contrary with the load action direction of car counterweight, thus make bearing 3 substantially not by radial load effect, now bearing 3 will be equivalent to the rotation under no-load condition, thus largely on decrease bearing 3 wearing and tearing suffered when traction machine runs, and owing to being respectively equipped with the draw-in groove 5 fixed for magnet steel 41 and stator coil 42 outside main shaft 2 and inside rotor assembly 1, thus the steadiness of overall magnetic suspension structure 4 also effectively can be kept when rotor assembly 1 rotates.Above-mentioned magnetic-suspension high-speed outer rotor tractor adopts the radial load of magnetic suspension structure counteracting suffered by bearing, thus above improves the useful life of bearing largely, thus also reduces elevator operation and maintenance cost, improve the quality of products, overall structure is simple, easy for installation, is applicable to applying.
It is emphasized that: be only preferred embodiment of the present invention above, not any pro forma restriction is done to the present invention, every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (3)
1. a magnetic-suspension high-speed outer rotor tractor, there is the rotor assembly (1) of carrying elevator lift car load and be positioned at the main shaft (2) of rotor assembly (1), the bearing (3) that rotor assembly (1) can be made to rotate relatively freely on main shaft (2) is provided with between described main shaft (2) and rotor assembly (1), it is characterized in that: between described main shaft (2) and rotor assembly (1), be also provided with at least one group of magnetic suspension structure (4), described magnetic suspension structure (4) comprises a socket and is fixed on the upper and magnet steel (41) that outward appearance is rounded of main shaft (2), go back in described magnet steel (41) outside ring set have one with the stator coil (42) of the circle of its lateral surface matched in clearance, described stator coil (42) is fixedly connected with rotor assembly (1) medial surface, the magnetic pole of described magnet steel (41) upper semi-circle is contrary with the magnetic pole of lower half circle, magnetic pole after described stator coil (42) energising is identical with the upper semi-circle magnetic pole of described magnet steel (41).
2. magnetic-suspension high-speed outer rotor tractor according to claim 1, is characterized in that: the quantity of described magnetic suspension structure (4) is set to two groups and is arranged at the two sides of described bearing (3) respectively.
3. magnetic-suspension high-speed outer rotor tractor according to claim 1, is characterized in that: be respectively equipped with in described main shaft (2) outside and rotor assembly (1) inner side the draw-in groove (5) fixed for magnet steel (41) and stator coil (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510399423.XA CN104979943A (en) | 2015-07-09 | 2015-07-09 | High-speed external rotor traction machine with magnetic suspension structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510399423.XA CN104979943A (en) | 2015-07-09 | 2015-07-09 | High-speed external rotor traction machine with magnetic suspension structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104979943A true CN104979943A (en) | 2015-10-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510399423.XA Pending CN104979943A (en) | 2015-07-09 | 2015-07-09 | High-speed external rotor traction machine with magnetic suspension structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN104979943A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110266168A (en) * | 2019-07-02 | 2019-09-20 | 山东天瑞重工有限公司 | A kind of outer rotor magnetic suspension motor |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2340978Y (en) * | 1998-07-18 | 1999-09-29 | 李翼鹏 | Floatation high speed bearing |
| US6707207B1 (en) * | 2002-12-19 | 2004-03-16 | Hitachi Global Storage Technologies Netherlands B.V. | High bandwidth track following actuator for hard disk drives |
| CN2765373Y (en) * | 2005-01-13 | 2006-03-15 | 南京师范大学 | Combined bearing magnetic suspension motor / electric main shaft |
| CN101224835A (en) * | 2007-12-14 | 2008-07-23 | 宁波宏大电梯有限公司 | Elevator traction machine |
| CN101915214A (en) * | 2010-07-22 | 2010-12-15 | 南京工业大学 | Five-freedom degree full-suspension vertical shaft wind power generator in outer-rotor structure |
| US20140265689A1 (en) * | 2013-03-14 | 2014-09-18 | Calnetix Technologies, Llc | Generating radial electromagnetic forces |
| CN104150331A (en) * | 2014-08-07 | 2014-11-19 | 广东合普动力科技有限公司 | Permanent magnet synchronization tractor with ventilation structure |
| CN204706991U (en) * | 2015-07-09 | 2015-10-14 | 苏州润吉驱动技术有限公司 | Magnetic-suspension high-speed outer rotor tractor |
-
2015
- 2015-07-09 CN CN201510399423.XA patent/CN104979943A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2340978Y (en) * | 1998-07-18 | 1999-09-29 | 李翼鹏 | Floatation high speed bearing |
| US6707207B1 (en) * | 2002-12-19 | 2004-03-16 | Hitachi Global Storage Technologies Netherlands B.V. | High bandwidth track following actuator for hard disk drives |
| CN2765373Y (en) * | 2005-01-13 | 2006-03-15 | 南京师范大学 | Combined bearing magnetic suspension motor / electric main shaft |
| CN101224835A (en) * | 2007-12-14 | 2008-07-23 | 宁波宏大电梯有限公司 | Elevator traction machine |
| CN101915214A (en) * | 2010-07-22 | 2010-12-15 | 南京工业大学 | Five-freedom degree full-suspension vertical shaft wind power generator in outer-rotor structure |
| US20140265689A1 (en) * | 2013-03-14 | 2014-09-18 | Calnetix Technologies, Llc | Generating radial electromagnetic forces |
| CN104150331A (en) * | 2014-08-07 | 2014-11-19 | 广东合普动力科技有限公司 | Permanent magnet synchronization tractor with ventilation structure |
| CN204706991U (en) * | 2015-07-09 | 2015-10-14 | 苏州润吉驱动技术有限公司 | Magnetic-suspension high-speed outer rotor tractor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110266168A (en) * | 2019-07-02 | 2019-09-20 | 山东天瑞重工有限公司 | A kind of outer rotor magnetic suspension motor |
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| PB01 | Publication | ||
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Application publication date: 20151014 |