CN201430517Y

CN201430517Y - Permanent magnet motor for propelling double propeller

Info

Publication number: CN201430517Y
Application number: CN200920014692XU
Authority: CN
Inventors: 张岳; 杨群; 徐振耀
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-06-19
Filing date: 2009-06-19
Publication date: 2010-03-24
Anticipated expiration: 2019-06-19

Abstract

The utility model relates to a permanent magnet motor for propelling a double propeller, which belongs to the technical field of motors, and is characterized in that an inner rotor shaft and an outerrotor shaft are concentrically arranged, and the left end of the inner rotor shaft is sequentially assembled with a front bearing of an inner rotor, a front splint of a stator, a front bearing of an outer rotor, the outer rotor shaft, a case bearing and a front end cover of the case bearing from inside to outside; six connecting pieces are uniformly distributed in the stator to fix a stator silicon sheet, and the left end of each connecting piece is fixed on the front splint of the stator; and the right end of each connecting piece is fixed on a back splint of the stator. The utility model hasthe advantages that the inner rotor and the outer rotor are adopted to directly drive the double propeller, so that the rotation torques generated in the circumferential direction can cancel each other when the double propeller generates propelling force, thereby effectively preventing the side-rolling phenomenon of torpedoes or underwater robots so as to improve the operating efficiency.

Description

Twin screw advances uses magneto

Technical field

The utility model belongs to technical field of motors, relates to a kind of twin screw propelling magneto.

Background technology

At present, known torpedo or underwater robot twin screw propulsion electric machine are the double-rotor direct current motor, because this kind motor needs two cover brush and slip-ring devices, this makes the reliability of motor reduce, and that complex structure, quality become is heavy, maintenance difficulties and cost increase.

The utility model content

In order to overcome the deficiency of existing double-rotor direct current motor as torpedo or underwater robot twin screw propulsion electric machine, the utility model provides a kind of twin screw to advance and has used magneto, this motor has saved brush and slip-ring device, guaranteeing to have realized non-brushing when output is with fast incorgruous rotating torques, improved the overall performance of submarine navigation device propulsion system.

The utility model adopts following scheme: this magneto comprises stator, interior p-m rotor, outer p-m rotor, inner rotor shaft, outer rotor shaft, stator front plate, stator rear plate, external rotor rear plate, casing front plate, casing rear plate, bearing, fore bearing end cap, casing, wiring hole etc.Wherein inner rotor shaft and outer rotor shaft are concentric, the inner rotor shaft left end is equipped with internal rotor fore bearing, stator front plate, external rotor fore bearing, outer rotor shaft from inside to outside successively, the casing bearing, casing bearing front end housing, the inner rotor shaft right-hand member is equipped with interior rotating shaft rear bearing, stator rear plate, outer shaft rear bearing, external rotor rear plate, casing rear plate from inside to outside successively, and the inner rotor shaft middle part vertically is equipped with interior p-m rotor, stator, outer p-m rotor and casing from inside to outside successively.Interior p-m rotor is fixed on the inner rotor shaft, is evenly distributed with 6 connectors in the middle of the stator, plays the effect of fastening stator silicon steel sheet, and this connector left end is fixed on the stator front plate, and right-hand member is fixed on the stator rear plate.The stator rear end cap has a wiring hole near the bearing place, can directly power to the stator winding of inside by this hole frequency converter, outer p-m rotor left end links to each other with outer rotor shaft, right-hand member links to each other with the external rotor rear plate, stator, internal rotor and external rotor are owing to adopted the fixing mode in two ends, the mechanical stability when strengthening the motor operation.

The stator inner round wall and the cylindrical wall of described motor are evenly slotted, and embed ring-like staggered form stator winding, choose embedded laissez-faire meaning two phase windings in stator inner side slot and the outer side slot, form ring-like staggered form stator winding in stator end cross exchanged position.It is shorter that the Circular Winding that is adopted is compared its end of traditional winding, especially for the big motor in the not a half footpath of number of poles, improved the utilance of winding like this, reduced end leakage reactance, improved whole motor properties.Choose embedded laissez-faire meaning two phase windings in stator inner side slot and the outer side slot, in their positions of stator end cross exchanged, make that the interior winding of inner side slot is opposite with the phase sequence of winding in the outer side slot, when feeding one group of symmetry three-phase alternating current, can produce two antidromous magnetic fields respectively at the inboard air gap and the outside air gap of motor, thereby drive the incorgruous rotation of rotor, again because this motor stator both sides winding number of poles is identical, then the inboard air gap of stator is opposite with outside air-gap field rotary speed equidirectional, so internal rotor is opposite with external rotor rotary speed equidirectional, and the mechanical output that two rotors are exported also can be inequality.Internal rotor and external rotor adopt permanent magnetism dignity subsides formulas (or plug-in type) structure, and single-ended concentric type cross-compound arrangement is adopted in the machinery output of two rotors.

The beneficial effects of the utility model are: adopt inside and outside two rotors directly to drive twin propellers (rake angle is opposite), this makes two screws when producing forward thrust, the opposite moment of direction that circumferencial direction produces in the time of can cancelling each other incorgruous the rotation, thereby effectively avoided the phenomenon of sidewindering of torpedo or underwater robot, improved the operational efficiency of system.Realized that torpedo or underwater robot twin screw advance the non-brushing with magneto, simplified the mechanical structure that is applied to double-rotor direct current motor in this field at present, improved whole propulsion system reliability of operation, when one group of three-phase symmetrical alternating current electricity of input, can export the machine torque of two identical switched in opposite of rotating speed simultaneously, and can regulate twin-propeller velocity of rotation by frequency converter, have permanent-magnet electric engine efficiency height simultaneously concurrently, the torque density advantages of higher.

Description of drawings

Fig. 1 is the utility model electric machine structure schematic diagram;

Fig. 2 is the ring-like staggered form winding overhang of a utility model motor stator wiring schematic diagram;

Fig. 3 (a) is the utility model motor stator front view; (b) be the utility model motor stator end view;

Fig. 4 is the utility model motor driven systems structural representation;

Among Fig. 1: 1 casing, 2 inner rotor shafts, 3 outer rotor shafts, 4 stator front plates, 5 casing bearing front end housings, 6 interior p-m rotors, 7 internal rotor permanent-magnetic bodies, 8 stators, 9 casing front plates, 10 stator connectors, 11 external rotor permanent magnet bodies, 12 outer p-m rotors, 13 casing fixtures, 14 casing rear plates, 15 external rotor rear plates, 16 stator rear plates, 17 wiring holes, 18 outer shaft rear bearings, 19 casing bearings, 20 external rotor fore bearings, 21 internal rotor fore bearings, 22 interior rotating shaft rear bearings.

Among Fig. 3: 23 stator connectors, 24 stator silicon steel sheets, 25 stator core pressing plates, the insulation of 26 stator ends, 27 stator ring staggered form windings.

Concrete implementation

Below in conjunction with accompanying drawing the utility model motor is described in further details.

As shown in Figure 1, electric machine structure schematic diagram of the present utility model, inner rotor shaft 2 and outer rotor shaft 3 are concentric, inner rotor shaft 2 left ends are equipped with internal rotor fore bearing 21 from inside to outside successively, stator front plate 4, external rotor fore bearing 20, outer rotor shaft 3, casing bearing 19, casing bearing front end housing 5, inner rotor shaft 2 right-hand members are installed as interior rotating shaft rear bearing 22 from inside to outside successively, stator rear plate 16, outer shaft rear bearing 18, external rotor rear plate 15, casing rear plate 14, inner rotor shaft 2 middle parts vertically are equipped with interior p-m rotor 6 from inside to outside successively, stator 8, outer p-m rotor 12 and casing 1, interior p-m rotor 6 is fixed on the inner rotor shaft 2, be installed with equally distributed 6 stator connectors 10 in the middle of the stator 8, connector 10 plays the effect of fastening stator silicon steel sheet, each connector 10 left end is assemblied on the stator front plate 4, right-hand member is assemblied on the stator rear plate 16, stator rear plate 16 evenly is provided with a plurality of wiring holes 17 near the bearing place, and frequency converter is directly powered to the stator winding of inside by this hole.Outer p-m rotor 12 left ends link to each other with outer rotor shaft 3 by bolt, and right-hand member links to each other with outer shaft rear plate 15 by bolt.Stator 8, stator front plate 4, stator rear plate 16 and the stator connector 10 common structures of forming stator system, outer rotor shaft 3, outer p-m rotor 12 and the external rotor rear plate 15 common structures of forming the external rotor rotary system.Interior p-m rotor 6 and the inner rotor shaft 2 common structures of forming the internal rotor rotary system.

Between internal rotor rotary system and static stator system, place internal rotor fore bearing 21 and interior rotating shaft rear bearing 22 respectively; Between static stator system and external rotor rotary system, place external rotor fore bearing 20 and outer shaft rear bearing 18 respectively; Two groups of bearing arrangements are separated internal rotor rotary system, static stator system and external rotor rotary system dexterously, guaranteed independent separately stable operation, it is the key that realizes that dual mechanical port is independently exported, in addition, the casing bearing between external rotor rotary system and casing 4 has played the effect of supporting and locate the external rotor rotary system.Because stator and external rotor rotary system all adopt the fixing structure of two groups of bearings both-ends, this makes the stability of motor integral body obtain great lifting, can make the bigger power of motor output, and can expand the application of this motor in stable operation under the high rotational speed.

Fig. 2 is the ring-like staggered form winding overhang of a stator wiring schematic diagram, with 6 utmost points, 36 groove motors is example, the ring-like staggered form winding overhang of this motor wiring of having drawn, A-X, B-Y, C-Z are respectively the joint of three phase windings among the figure, upper strata groove and lower floor's groove are respectively stator circle wall inner surface groove and circle wall outer surface groove, as can be seen from the figure, B in upper strata groove and the lower floor's groove and C phase winding be in cross exchanged position, stator end place, and this makes that the winding phase sequence is opposite in upper strata groove and the lower floor's groove.When one group of three-phase symmetrical alternating current electricity of input, can produce two in the air gap of stator both sides with fast incorgruous rotating magnetic field, thereby driving internal rotor and external rotor are exported with fast incorgruous torque from two inner rotor shafts and outer rotor shaft like this.

Fig. 3 is the utility model motor stator assembling schematic diagram, stator end evenly has 6 holes vertically, 6 stator connectors 23 penetrate in the hole, stator core pressing plate 25 by stator silicon steel sheet 24 two ends is fastening with stator silicon steel sheet 24, one deck stator end insulation 26 is arranged between stator core pressing plate 25 and stator ring staggered form winding 27, and the effect of playing is to avoid the Stator End Winding shorted to earth.

Fig. 4 is a motor driven systems structural representation of the present utility model, and the storage battery of being installed in torpedo or the underwater robot provides direct current to inverter, and inverter becomes alternating current with direct current, is input to this motor point stator winding then.As previously described, when stator winding feeds one group of three-phase symmetrical alternating current electricity, can on two rotors, produce two, directly drive twin screw with fast incorgruous rotation by inner rotor shaft and outer rotor shaft then with fast incorgruous rotating torques.

Claims

1. a twin screw advances and uses magneto, comprise stator (8), interior p-m rotor (6), outer p-m rotor (12), inner rotor shaft (2), outer rotor shaft (3), stator front plate (4), stator rear plate (16), external rotor rear plate (15), casing front plate (9), casing rear plate (14), bearing, casing bearing front end housing (5), casing (1) and wiring hole (17), it is characterized in that described inner rotor shaft (2) and described outer rotor shaft (3) are concentric, inner rotor shaft (2) left end is equipped with internal rotor fore bearing (21) from inside to outside successively, stator front plate (4), external rotor fore bearing (20), outer rotor shaft (3), casing bearing (19) and casing bearing front end housing (5), inner rotor shaft (2) right-hand member is equipped with interior rotating shaft rear bearing (22) from inside to outside successively, stator rear plate (16), outer shaft rear bearing (18), external rotor rear plate (15) and casing rear plate (14), inner rotor shaft (2) middle part vertically is equipped with interior p-m rotor (6) from inside to outside successively, stator (8), outer p-m rotor (12) and casing (1), described interior p-m rotor (6) is fixed on the inner rotor shaft (2); Be evenly distributed with 6 connectors (10) in the middle of the described stator (8), this connector (10) left end is fixed on the stator front plate (4), and right-hand member is fixed on the stator rear plate (16); Described outer p-m rotor (12) left end links to each other with outer rotor shaft (3), and right-hand member links to each other with external rotor rear plate (15); Described stator (8) inner round wall and cylindrical wall are evenly slotted, and embed ring-like staggered form stator winding.

2. twin screw according to claim 1 advances uses magneto, it is characterized in that described ring-like staggered form stator winding, choose any two phase windings in the winding that stator (8) inner side slot and outer side slot embed, form ring-like staggered form stator winding at stator (8) end portions cross transposition.