CN201574018U - Seatless permanent-magnet synchronous tractor - Google Patents
Seatless permanent-magnet synchronous tractor Download PDFInfo
- Publication number
- CN201574018U CN201574018U CN2010200031651U CN201020003165U CN201574018U CN 201574018 U CN201574018 U CN 201574018U CN 2010200031651 U CN2010200031651 U CN 2010200031651U CN 201020003165 U CN201020003165 U CN 201020003165U CN 201574018 U CN201574018 U CN 201574018U
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- bearing
- stator
- rotating shaft
- rotor
- seat
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- Expired - Fee Related
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model discloses a seatless permanent-magnet synchronous tractor. The tractor comprises a rotating shaft (4), a traction sheave (12), a stator (8), a rotor magnetic yoke (10) and a permanent magnet body (9) fixed on the inner side of the rotor magnetic yoke (10), and is characterized in that support plates (1) are arranged on the two sides of the traction sheave (12) respectively, bearing pedestals (2) are arranged on the support plates (1), load bearings (3) used for supporting the rotating shaft (4) are arranged in the bearing pedestals (2), a supporting bearing (11) is further arranged on the rotating shaft (4), and the stator (8) is fixed on a supporting bearing (11) and is connected with the bearing pedestals (2) through pins (6) or keys. The utility model can ensure the concentricity of the stator and a rotor, thereby improving the performance of the tractor and reducing the requirements on the accuracy of components and parts.
Description
Technical field
The utility model relates to the equipment that a kind of elevator is used, the permanent-magnet synchnorous gearless dragging machine that particularly a kind of elevator is used.
Background technology
The permanent magnetic synchronous traction machine that present high speed heavy elevator is used, its complete machine structure mode mainly contains two kinds, a kind ofly be that cantilevered arranges, strut member in a side and traction sheave at opposite side, the load that such structure is born motor supports is too big, and because cantilever beam overhanging causes the distortion of towing machine rotating shaft bigger, directly have influence on the service life of towing machine, so less in actual applications.Another kind is the simply-support structure, and mainly being all has strut member to form freely-supported in the both sides of traction sheave, and its advantage is rational in infrastructure, can significantly reduce the distortion and the internal stress of towing machine.This structure implementation mainly contains following two kinds, and a kind of is that two strut members are in aggregates by the frame-type design, and in the middle of traction sheave was assembled to by the big end cap of a side design-calculated, rotor was fixed in the rotating shaft, and stator is fixed on the strut member.The advantage of this structure is that the parts accuracy requirement that is mounted on the framework is lower, but it is also relatively big to process a complicated frame structure difficulty, and cost is also than higher, moreover the rotor air gap is difficult to guarantee when using.And another kind is the separately independently processing of two strut members, supports underframe as reference for installation by designing one.As the patent No. is as described in the CN201195655, though this structure can avoid processing the problem that a complicated frame structure is brought, but, in the assembling complete machine, concentric in order to guarantee two axis holes on the stay bearing plate, requirement for assembling has improved a lot, even and the precision of assembling very high, in use also be difficult to the air gap of assurance rotor.Also having a kind of is to process two stay bearing plates respectively, by welding two stay bearing plates is made an integral body then, offers axis hole then on stay bearing plate respectively, because after the welding, two stay bearing plates are far apart, it is bigger to process two concentric axis hole difficulty.No matter being which kind of above-mentioned method, all having a problem, is exactly when traction sheave is stressed, can make axle that small distortion takes place, and causes destroying the concentric of rotor, has reduced the performance of towing machine.
The utility model content
The purpose of this utility model is, a kind of nothing seat permanent magnetic synchronous traction machine is provided.It can guarantee the concentric of stator and rotor, has improved the performance of towing machine.
The technical solution of the utility model: a kind of no seat permanent magnetic synchronous traction machine, comprise rotating shaft, traction sheave, stator, rotor rim and be fixed on the permanent magnet of rotor rim inboard, it is characterized in that: described traction sheave both sides are respectively equipped with stay bearing plate, stay bearing plate is provided with bearing seat, be provided with the load bearing in the bearing seat and be used for supporting revolving shaft, also be provided with backup bearing in the rotating shaft, stator is fixed on the backup bearing, and is connected with bearing seat by pin or key.
In the above-mentioned no seat permanent magnetic synchronous traction machine, described stay bearing plate connects by the connecting panel of bottom.
Compared with prior art, the utility model is by the bearing in rotating shaft location stator, guaranteed the concentric of stator and rotor, improved the performance of towing machine, and reduced the requirement to the parts precision; By pin or key are set stator is connected with bearing seat, makes stator when circumferentially bearing torque, and the distortion after can be according to rotating shaft stressed carries out the position adjustment of the suffered loading direction of traction sheave, guarantee the concentric of stator and rotor.
After tested, nothing seat permanent magnetic synchronous traction machine of the present utility model, parts difficulty of processing such as stay bearing plate, rotating shaft have reduced at least one class of accuracy, cause the passing rate of processing of parts to improve at least more than 30%, and tooling cost reduces more than 10%; Because the concentric locating of rotor, cause the assembly difficulty of towing machine to reduce greatly, the cooperation assembling first-time qualification rate of rotor can reach 100%, and significantly reduced because the motor performance loss that the rotor decentraction causes, contrast test by different towing machines, nothing seat permanent magnetic synchronous traction machine of the present utility model can reduce owing to more than the electromagnetic noise 2dB that the rotor decentraction causes, reduce the loss of electric machine more than 0.5%; Because the design of stator coupling end pin, allow it that to a certain degree rotation is arranged on the direction of the suffered load of traction sheave, can make towing machine when bearing big Radial load, allow rotating shaft and stator that certain rotation takes place, make the flexural deformation of rotating shaft increase flexibility, and the load bearing has also played the effect of strengthening shaft stiffness, by utilizing the virtual emulation software analysis to get, this design can reduce the stress concentration of rotating shaft more than 30%, and buckling strain reduces about 10%.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the left view of Fig. 1.
Being labeled as in the accompanying drawing: 1-stay bearing plate, 2-bearing seat, 3-load bearing, 4-rotating shaft, 6-pin, 8-stator, 9-permanent magnet, 10-rotor rim, 11-backup bearing, 12-traction sheave, 16-connecting panel.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further described, but not as the foundation to the utility model restriction.
Embodiment.A kind of nothing seat permanent magnetic synchronous traction machine, it is a kind of no iron core base permanent magnetic synchronous traction machine, constitute as depicted in figs. 1 and 2, comprise rotating shaft 4, traction sheave 12 in the rotating shaft 4, stator 8, rotor rim 10 and the permanent magnet 9 that is fixed on rotor rim 10 inboards, it is characterized in that: described rotor rim 10 is screwed on traction sheave 12, or it is as a whole with traction sheave 12, traction sheave 12 both sides are respectively equipped with stay bearing plate 1, stay bearing plate 1 is provided with bearing seat 2, be provided with load bearing 3 in the bearing seat 2 and be used for supporting revolving shaft 4, also be provided with backup bearing 11 in the rotating shaft 4, stator 8 is fixed on the backup bearing 11, and is connected with bearing seat 2 by pin 6 or key.Stay bearing plate 1 connects by the connecting panel 16 of bottom.Stator 8 directly is fixed on the backup bearing 11, need not to install iron core base.
Principle of work of the present utility model is: drive frequency converter and give stator with three-phase alternating current electric forming rotating field, dragging the rotor rim 10 that permanent magnet 9 is housed rotates, then drive traction sheave 12 rotations, promote or descending motion so can carry out weight by the friction force of steel rope and traction groove.When rotating shaft 4 rotation, the coder that has driven concentric installation is done with the speed rotation, the relative position information in speed and stator and rotor magnetic field is fed back to frequency converter, to carry out the velocity location control of motor.Because stator 8 is by the bearing in the rotating shaft 4 (load bearing 3 and backup bearing 11) location, guaranteed the concentric of stator 8 and rotor, improved the performance of towing machine, and reduced requirement the parts precision; By pin 6 or key are set stator 8 is connected with bearing seat 2, makes stator 8 when circumferentially bearing torque, and the distortion after can be according to rotating shaft 4 stressed carries out the position adjustment of the suffered loading direction of traction sheave, guarantee the concentric of stator 8 and rotor.
Claims (2)
1. one kind is not had the seat permanent magnetic synchronous traction machine, comprise rotating shaft (4), traction sheave (12), stator (8), rotor rim (10) and be fixed on the inboard permanent magnet (9) of rotor rim (10), it is characterized in that: described traction sheave (12) both sides are respectively equipped with stay bearing plate (1), stay bearing plate (1) is provided with bearing seat (2), be provided with load bearing (3) in the bearing seat (2) and be used for supporting revolving shaft (4), also be provided with backup bearing (11) in the rotating shaft (4), stator (8) is fixed on the backup bearing (11), and is connected with bearing seat (2) by pin (6) or key.
2. nothing seat permanent magnetic synchronous traction machine according to claim 1, it is characterized in that: described stay bearing plate (1) connects by the connecting panel (16) of bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200031651U CN201574018U (en) | 2010-01-08 | 2010-01-08 | Seatless permanent-magnet synchronous tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200031651U CN201574018U (en) | 2010-01-08 | 2010-01-08 | Seatless permanent-magnet synchronous tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201574018U true CN201574018U (en) | 2010-09-08 |
Family
ID=42693894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200031651U Expired - Fee Related CN201574018U (en) | 2010-01-08 | 2010-01-08 | Seatless permanent-magnet synchronous tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201574018U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108689283A (en) * | 2017-04-07 | 2018-10-23 | 株式会社日立制作所 | Traction machine and elevator |
-
2010
- 2010-01-08 CN CN2010200031651U patent/CN201574018U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108689283A (en) * | 2017-04-07 | 2018-10-23 | 株式会社日立制作所 | Traction machine and elevator |
| CN108689283B (en) * | 2017-04-07 | 2020-07-14 | 株式会社日立制作所 | Traction machine and elevator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100908 Termination date: 20170108 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |