CN101746657A - Transmission method of tractor and permanent-magnet synchronous tractor - Google Patents
Transmission method of tractor and permanent-magnet synchronous tractor Download PDFInfo
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- CN101746657A CN101746657A CN201010003954A CN201010003954A CN101746657A CN 101746657 A CN101746657 A CN 101746657A CN 201010003954 A CN201010003954 A CN 201010003954A CN 201010003954 A CN201010003954 A CN 201010003954A CN 101746657 A CN101746657 A CN 101746657A
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Abstract
The invention discloses a transmission method of a tractor and a permanent-magnet synchronous tractor, which is characterized in that coaxially mounted traction sheaves are driven by a bearing positioning stator arranged on a rotating shaft. The invention can ensure the concentricity of the stator and the rotor, improves the performance of the motor of the whole tractor and reduces the precision requirement on the components of the tractor.
Description
Technical field
The present invention relates to the equipment that a kind of elevator is used, the towing 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 rotating shaft that small distortion takes place, and causes destroying the concentric of rotor, has reduced the performance of towing machine.
Summary of the invention
The objective of the invention is to, a kind of drive method and permanent magnetic synchronous traction machine of towing machine is provided.It can guarantee the concentric of stator and rotor, has improved the performance of towing machine.
Technical scheme of the present invention: a kind of drive method of towing machine is characterized in that: by the location of the bearing in rotating shaft stator, drive coaxial mounted rotor.
In the drive method of aforesaid towing machine, described stator is positioned in the rotating shaft by the bearing in iron core base and the rotating shaft, or directly is positioned in the rotating shaft by the bearing in the rotating shaft, and is concentric to guarantee rotor and stator.
In the drive method of aforesaid towing machine, the coupling end of described iron core base be connected with the stay bearing plate of supporting revolving shaft by pin or key or with stay bearing plate on be used for the installation load bearing bearing seat be connected, limit the degree of freedom of iron core base torque direction, but allowed on the direction of the suffered load of traction sheave, to have rotation to a certain degree.
In the drive method of aforesaid towing machine, described iron core base or stator support by load bearing on the stay bearing plate and the backup bearing in the rotating shaft, or by supporting at the backup bearing more than two in the rotating shaft.
Realize a kind of permanent magnetic synchronous traction machine of aforementioned arbitrary method, comprise rotating shaft, traction sheave, stator, rotor rim and be fixed on the permanent magnet of rotor rim inboard; It is characterized in that: also comprise a stator registration device.
In the aforesaid permanent magnetic synchronous traction machine, described stator registration device comprises the backup bearing in the rotating shaft, or also comprises the load bearing; Perhaps form, or also comprise the load bearing by iron core base that stator is installed and the backup bearing in the rotating shaft.
In the aforesaid permanent magnetic synchronous traction machine, the coupling end of described iron core base is by pin or key is connected with the stay bearing plate of supporting revolving shaft or be connected with bearing seat on the stay bearing plate.
In the aforesaid permanent magnetic synchronous traction machine, described iron core base or stator support by load bearing on the stay bearing plate and the backup bearing in the rotating shaft, or by supporting at the backup bearing more than two in the rotating shaft.
Compared with prior art, the present invention 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 is set iron core base is connected with stay bearing plate, makes iron core base when circumferentially bearing torque, and the distortion after can be according to rotating shaft stressed carries out the position adjustment of vertical direction, guarantee the concentric of stator and rotor.
After tested, use permanent magnetic synchronous traction machine of the present invention, parts difficulty of processing such as stay bearing plate, rotating shaft, iron core base 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, permanent magnetic synchronous traction machine of the present invention 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 the structural representation of the embodiment of the invention 1;
Fig. 2 is the structural representation of the embodiment of the invention 2;
Fig. 3 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, 5-coder, 6-pin, 7-iron core base, 8-stator, 9-permanent magnet, 10-rotor rim, 11-backup bearing, 12-traction sheave, 16-connecting panel.
The specific embodiment
The present invention is further illustrated below in conjunction with drawings and Examples, but not as the foundation to the present invention's restriction.
A kind of drive method of permanent magnetic synchronous traction machine, characteristics are: by the location of the bearing in rotating shaft stator, drive coaxial mounted rotor.Described stator is positioned in the rotating shaft by the bearing in iron core base and the rotating shaft, or directly is positioned in the rotating shaft by the bearing in the rotating shaft, to guarantee the concentric of rotor and stator.The coupling end of described iron core base be connected with the stay bearing plate of supporting revolving shaft by pin or key or with stay bearing plate on be used for the installation load bearing bearing seat be connected, limit the degree of freedom of iron core base torque direction, but allowed on the direction of the suffered load of traction sheave, to have rotation to a certain degree.Described iron core base or stator support by load bearing on the stay bearing plate and the backup bearing in the rotating shaft, or by supporting at the backup bearing more than two in the rotating shaft.
Realize a kind of mode of said method, a kind of permanent magnetic synchronous traction machine, constitute as shown in Figure 1, 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 load bearing 3 and is used for supporting revolving shaft 4, also be provided with two above backup bearings 11 in the rotating shaft 4, stator 8 is fixed on the backup bearing 11, and is provided with screw and is connected with stay bearing plate 1.Stay bearing plate 1 connects by the connecting panel 16 of bottom.
Principle of work of the present invention 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.The present invention is by the bearing in the rotating shaft 4 (backup bearing 11) location stator 8, guaranteed the concentric of stator 8 and rotor, improved the performance of towing machine, and reduced the requirement to the parts precision.
Drive method is with embodiment 1.Realize the another kind of mode of this method: a kind of permanent magnetic synchronous traction machine, constitute as shown in figures 1 and 3, 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, be connected with the coupling end of iron core base 7 on the bearing seat 2 by pin 6 or key, the other end of iron core base 7 is fixed on the outer ring of backup bearing 11 at rotating shaft 4 middle parts.Stator 8 is installed on the iron core base 7.Stay bearing plate 1 connects by the connecting panel 16 of bottom.
Principle of work of the present invention 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.The present invention is by the bearing in the rotating shaft 4 (load bearing 3 and backup bearing 11) location stator 8, guaranteed the concentric of stator 8 and rotor, improved the performance of towing machine, and reduced the requirement to the parts precision; By pin 6 or key are set the iron core base 7 of fixed stator 8 is connected with bearing seat 2, make 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, guarantees the concentric of stator 8 and rotor.
Claims (8)
1. the drive method of a towing machine is characterized in that: drive coaxial mounted rotor by the location of the bearing in rotating shaft stator.
2. the drive method of towing machine according to claim 1, it is characterized in that: described stator is positioned in the rotating shaft by the bearing in iron core base and the rotating shaft, or directly is positioned in the rotating shaft by the bearing in the rotating shaft, and is concentric to guarantee rotor and stator.
3. the drive method of towing machine according to claim 2, it is characterized in that: the coupling end of described iron core base be connected with the stay bearing plate of supporting revolving shaft by pin or key or with stay bearing plate on be used for the installation load bearing bearing seat be connected, limit the degree of freedom of iron core base torque direction, but allowed on the direction of the suffered load of traction sheave, to have rotation to a certain degree.
4. the drive method of towing machine according to claim 2 is characterized in that: described iron core base or stator support by load bearing on the stay bearing plate and the backup bearing in the rotating shaft, or by supporting at the backup bearing more than two in the rotating shaft.
5. realize a kind of permanent magnetic synchronous traction machine of any one method of claim 1 to 4, 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: also comprise a stator registration device.
6. permanent magnetic synchronous traction machine according to claim 5 is characterized in that: described stator registration device comprises the backup bearing (11) in the rotating shaft (4), or also comprises load bearing (3); Perhaps form, or also comprise load bearing (3) by iron core base (7) that stator (8) is installed and the backup bearing (11) in the rotating shaft (4).
7. permanent magnetic synchronous traction machine according to claim 6 is characterized in that: the coupling end of described iron core base (7) is by pin (6) or key is connected with the stay bearing plate (1) of supporting revolving shaft (11) or be connected with bearing seat (2) on the stay bearing plate (1).
8. permanent magnetic synchronous traction machine according to claim 6, it is characterized in that: described iron core base (7) or stator (8) support by load bearing (3) on the stay bearing plate (1) and the backup bearing (11) in the rotating shaft, or support by the backup bearing more than two (11) in rotating shaft (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010003954 CN101746657B (en) | 2010-01-08 | 2010-01-08 | Transmission method of tractor and permanent-magnet synchronous tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010003954 CN101746657B (en) | 2010-01-08 | 2010-01-08 | Transmission method of tractor and permanent-magnet synchronous tractor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101746657A true CN101746657A (en) | 2010-06-23 |
| CN101746657B CN101746657B (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010003954 Active CN101746657B (en) | 2010-01-08 | 2010-01-08 | Transmission method of tractor and permanent-magnet synchronous tractor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2908449Y (en) * | 2006-01-04 | 2007-06-06 | 许昌博玛曳引机制造有限公司 | Permanent synchronous tractor |
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| CN101746657B (en) | 2013-03-20 |
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Denomination of invention: Transmission method of tractor and permanent-magnet synchronous tractor Effective date of registration: 20130731 Granted publication date: 20130320 Pledgee: Nanxun Zhejiang rural commercial bank Limited by Share Ltd Pledgor: The agate of Zhejiang opens up the driving equipment Co., Ltd. Registration number: 2013990000526 |
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