Elevator traction machine
Technical field
The present invention relates to a kind of elevator technology field, is specifically a kind of permanent magnetism synchronization gear wheel free elevator traction machine.
Background technology
Elevator traction machine is the power plant of elevator, and conveying and transferring power make elevator run.Current elevator traction machine adopts permanent-magnet synchnorous gearless dragging machine mostly, it is generally provided with a stator and a rotor, certainly also has the patent of bimorph transducer open, namely respectively has a stator at rotor Internal and external cycle, the equal arranged concentric of bimorph transducer, namely these two stator radial distribution.There is following shortcoming in the elevator traction machine of above prior art:
1, only establishing the towing machine opposing torque of a stator and a rotor less, in order to there be enough moments of torsion, the power of towing machine can only be increased, thus increase the volume of towing machine, make cost increase like this.
2, its radial dimension of towing machine being provided with two radial stators is large, cannot be arranged on machine room or elevator used in small machine room, because machine room or its towing machine of elevator used in small machine room generally can only be arranged on the position between car and hoistway metope, its position is fixing and very narrow and small, and spacing between the two cannot install the larger towing machine of radial dimension; If strengthen the installation site of towing machine, then need to add building cost.
3, the towing machine of the bimorph transducer of radial arrangement, the power of two stators is different, and loss is different, and the frequency converter that employing routine is general is uncontrollable and use, and according to two frequency converters or the frequency converter needing special development, use cost is too high.
Summary of the invention
The technical problem to be solved in the present invention is, provides that a kind of radial dimension is little, use cost is low, compact conformation, is applicable to installing the elevator traction machine in machine room or small room.
Technical scheme of the present invention is, provides a kind of elevator traction machine with following structure, comprises rotating shaft, front support, rear support and Duo Gen pull bar and the first stator, some first magnet steel, the first rotor support, the first drg; Described rotating shaft and front support, rear support are rotationally connected; Described front support, rear support and many pull bars form load larrying member; It also comprises the second stator, some second magnet steel, the second rotor field spider, second brake, the axis of described second stator and the axis of the first stator are on the same line, every bar first magnet steel be same polarity magnet steel with wherein corresponding second magnet steel and both line of centerss of extending along its length on the same line, A, B, C three-phase windings position on described first stator and A, B, C three-phase windings position on corresponding second stator are respectively on the same line.
Described the first rotor support and the second rotor field spider are an entirety.
After adopting above structure, the present invention compared with prior art, has the following advantages:
1, the towing machine opposing torque being provided with two groups of stators and rotators is comparatively large, can increase the moment of torsion of about 1 times, compares the stator rotor of original single group, can be used in the place that moment of torsion is larger, can reduce use cost like this.
The towing machine of the two groups of stators and rotators 2, axially arranged, can make full use of the axial space of towing machine, make radial dimension little, main frame inner structure is compacter, increases the power density of towing machine under certain space constraint.And the position that can be arranged on like this between the car of machine room or elevator used in small machine room and hoistway metope, reduce the spacing between car and hoistway metope, make full use of the axial length of towing machine, the length of lift car itself can not be exceeded, after reducing spacing, also can reduce building cost.
3, be provided with the towing machine of two groups of stators and rotators, two motor stator and rotor are all identical, install on the same line, be equivalent to the two-way winding parallel of same motor, a conventional Frequency Converter Control can be adopted, thus substitute existing high-power towing machine, greatly reduce use cost.
As improvement, described the first rotor support and the second rotor field spider are an entirety, can ensure so every bar first magnet steel be same polarity magnet steel with wherein corresponding second magnet steel and both line of centerss of extending along its length on the same line, A, B, C three-phase windings position on described first stator and A, B, C three-phase windings position on corresponding second stator are respectively on the same line.
Accompanying drawing explanation
Accompanying drawing is elevator traction machine generalized section of the present invention.
As shown in the figure: 1, rotating shaft, 2, front support, 3, rear support, 4, pull bar, the 5, first stator, the 6, first magnet steel, 7, the first rotor support, the 8, first drg, the 9, second stator, the 10, second magnet steel, the 11, second rotor field spider, 12, second brake.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As shown in the figure, elevator traction machine of the present invention, comprises rotating shaft 1, front support 2, rear support 3 and Duo Gen pull bar 4 and the first stator 5, some first magnet steel 6, the first rotor support 7, first drg 8; Described rotating shaft 1 is rotationally connected with front support 2, rear support 3; Described front support 2, rear support 3 form load larrying member with many pull bars 4; Described first stator 5 is located in front support 3, and described the first rotor support 7 inside is provided with the first magnet steel 6, and described first drg 8 is arranged on corresponding pull bar 4.
Elevator traction machine of the present invention it also comprise the second stator 9, some second magnet steel 10, second rotor field spiders 11, second brake 12, described second stator 9 is located in rear support 3, described the first rotor support 7 and the second rotor field spider 11 are an entirety, described second rotor field spider 11 inside is provided with the second magnet steel 10, and described second brake 12 is arranged on corresponding pull bar 4.The axis of described second stator 9 and the axis of the first stator 5 are on the same line, every bar first magnet steel 6 be same polarity magnet steel with wherein corresponding second magnet steel 10 and both line of centerss of extending along its length on the same line, this line of centers also can be understood as the line of centers dividing arc length equally, and A, B, C three-phase windings position on described first stator 5 and A, B, C three-phase windings position on corresponding second stator 9 are respectively on the same line.By A phase winding rule from the mark groove of stator punching during manufacture, each stator is all according to said method embedding good in order, (also identical two stator cores can be done a mark at certain groove place, during rule, unified from then on groove starts), can produce the convenient identical stator identified.At same position, stator is contained on the first stator 5 and the second stator 9 by this mark, ensures two cover stator same-phases, thus the moment that generation two is equal, drive elevator smooth operation.