CN105305708A - Motor, wind generating set and rigidity adjusting device - Google Patents
Motor, wind generating set and rigidity adjusting device Download PDFInfo
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- CN105305708A CN105305708A CN201510658069.8A CN201510658069A CN105305708A CN 105305708 A CN105305708 A CN 105305708A CN 201510658069 A CN201510658069 A CN 201510658069A CN 105305708 A CN105305708 A CN 105305708A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The invention relates to a motor, a wind generating set and a rigidity adjusting device, wherein the motor comprises a fixed shaft and a stator with a supporting piece, and the motor also comprises: at least one rigidity adjusting device, the first end of which is connected with the supporting piece, and the second end of which is connected with a preset fixing part, and is used for applying adjustable force to the supporting piece and the preset fixing part respectively so as to change the rigidity of the stator; wherein the predetermined fixing part is the dead axle or an external base. When the force applied to the preset fixed part and the supporting part by the rigidity adjusting device is changed, the axial rigidity of the whole motor is changed, so that the axial natural frequency of the motor can be adjusted by the rigidity adjusting device, axial resonance is avoided, and the service lives of the motor and the wind generating set are prolonged.
Description
Technical field
The present invention relates to technical field of wind power, particularly relate to motor, wind turbine generator and rigidity adjuster.
Background technology
Wind-driven generator is the power equipment being electric energy and exporting by Wind resource change.As shown in Figure 1, wind-driven generator comprises stator (not indicating in figure), dead axle 1, rotor 20, rotating shaft 9.The dead axle 1 of wind-driven generator is connected with outside base 5, and base 5 can provide stable supporting role to wind-driven generator.The stator of wind-driven generator comprises stator support 10 and iron core winding 6.Stator support 10 comprises: rack body 2 and the strutting piece 3 be arranged on rack body 2.Iron core winding 6 is arranged on rack body 2.Dead axle 1 through strutting piece 3, and is fixedly connected with strutting piece 3.The first end of dead axle 1 is connected with base 5, concrete, and the first end of dead axle 1 has flange 11, and one end of base 5 has flange 51, and dead axle 1 is connected with the flange 51 of base 5 by flange 11.Second end and the rotating shaft 9 of dead axle 1 are rotationally connected by bearing.Rotating shaft 9 is connected with rotor 20.The axis of dead axle 1 overlaps with stator center line.
Wherein, the course of work of wind-driven generator when wind power generation is: under the promotion of wind-force, and impeller rotor driven 20 rotates, and rotor 20 relative stator is rotated, and makes generator produce electric energy.Generator amature 20 is when relative generator stator rotation, and generator amature 20 can produce excitation to generator unit stator, and driving frequency can change in a value range along with the rotation speed change of generator amature 20.When the frequency change of the excitation that generator unit stator in wind generator system is subject to is to when being close with its natural frequency, the amplitude of generator unit stator can enlarge markedly, there is covibration, strong resonance can reduce the runnability of wind turbine generator, even can damage the structure of wind turbine generator.
In order to reduce the generation of covibration, existing way is: by controlling wind power generator impeller rotating speed thus the numerical value of adjustment driving frequency, change excitation numerical value near generator natural frequency time, adjustable impeller rotating speed, makes driving frequency quickly through natural frequency.Or by carrying out reinforcement process to wind-driven generator internal mechanism, improve its rigidity, wind-driven generator natural frequency is increased to more than driving frequency excursion value, thus avoids covibration to occur.
Realizing in process of the present invention, inventor finds that in prior art, at least there are the following problems: can reduce energy output by regulating the way of wind-driven generator rotating speed; Wind-driven generator weight can be increased to a great extent by the way carrying out strengthening process to wind-driven generator inside, the weight demands of wind-driven generator head weight load cannot be met.
Summary of the invention
The invention provides a kind of motor, wind turbine generator and rigidity adjuster, main purpose is the axial natural frequency of the stator of motor and wind turbine generator is regulated by rigidity adjuster, so that by regulating the natural frequency of stator to avoid covibration to occur.
For achieving the above object, the present invention mainly provides following technical scheme:
On the one hand, embodiments of the invention provide a kind of motor, comprise dead axle and there is the stator of strutting piece, described motor also comprises: at least one rigidity adjuster, its first end is connected with described strutting piece, its second end is connected with predetermined fixed portion part, for applying adjustable power to described strutting piece and described predetermined fixed portion part respectively, changes to make the rigidity of described stator;
Wherein, described predetermined fixed portion part is the base of described dead axle or outside.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Further, aforesaid motor, wherein, the straight line parallel at described first end and described second end place, in stator center line, is parallel to described stator center line to make the direction of described adjustable power.
Further, aforesaid motor, wherein, described rigidity adjuster comprises: the first stud, and its two ends are described first end and the second end; First adjusting nut, be positioned at inner side or the outside of described first strutting piece and/or described predetermined fixed portion part, match with described first stud, by the precession of described first adjusting nut on described first stud or back-out, by described first stud, adjustable power is applied to described first strutting piece and described predetermined fixed portion part.
Further, aforesaid motor, wherein, described first end welds with described strutting piece; Or,
Described first end is through described strutting piece, and described first end has been threaded the first stop nut, and described first stop nut is arranged at inner side or the outside of described strutting piece.
Further, aforesaid motor, wherein, described rigidity adjuster comprises:
Wirerope, the two ends of described wirerope are fixedly connected with the first screw element and the second screw element respectively, and described first screw element is as described first end, and described second screw element is as the second described end;
Second adjusting nut, be positioned at the outside of described first strutting piece and/or described predetermined fixed portion part, match with described first screw element or described second screw element, by the precession of described second adjusting nut on described first screw element or described second screw element or back-out, by described first screw element and described second screw element, adjustable power is applied to described first strutting piece and described predetermined fixed portion part.
Further, aforesaid motor, wherein, described rigidity adjuster comprises:
Flower basket bolt member, be placed between described predetermined fixed portion part and described first strutting piece, described flower basket bolt member has the through hole running through two ends; The two ends of described through hole are respectively equipped with levogyrate inner thread and dextrorotation internal thread;
Second stud, is connected with described levogyrate inner thread, and described second stud is as described first end;
3rd stud, is connected with described dextrorotation internal thread, and described 3rd stud is as the second described end.
Further, aforesaid motor, wherein, described first end welds with described first strutting piece;
Or described first end is through described first strutting piece, and described first end has been threaded the second stop nut, and described second stop nut is arranged at inner side or the outside of described first strutting piece.
Further, aforesaid motor, wherein, described rigidity adjuster comprises:
Driving cylinder, its have cylinder body with can the flexible drive rod of relative described cylinder body;
Wherein, described drive rod is as described first end, and described cylinder body is as the second described end.
Further, aforesaid motor, wherein,
Described second end is connected with the extension of the first flange on described dead axle or the first flange, and described first flange is used for being connected with base; Or described second end is connected with the extension of the second flange on described base or the second flange, described second flange is used for being connected with dead axle.
Further, aforesaid motor, wherein,
Described rigidity adjuster is multiple, is uniformly distributed around stator center line is rounded.
On the other hand, embodiments of the invention also provide a kind of wind turbine generator, comprise base and motor, and described motor is above-mentioned motor described in any one; Described base is connected with the dead axle of described motor.
On the other hand, embodiments of the invention also provide a kind of rigidity adjuster, and this rigidity adjuster is applied to motor, and described rigidity adjuster comprises first end and the second end;
Described first end is used for being connected with the strutting piece of described motor, and described second end is used for being connected with predetermined fixed portion part; Described predetermined fixed portion part is the dead axle of base or described motor;
Wherein, described rigidity adjuster applies adjustable power to described strutting piece and described predetermined fixed portion part respectively by described first end and described second end, changes with the rigidity of the stator making described motor.
By technique scheme, motor of the present invention, wind turbine generator and rigidity adjuster at least have following beneficial effect:
In the technical scheme that the embodiment of the present invention provides, because rigidity adjuster can apply adjustable power to the strutting piece of stator and predetermined fixed portion part (such as dead axle or base etc.), when the rigidity adjuster power be applied on predetermined fixed portion part and strutting piece changes, the axial rigidity of predetermined fixed portion part and strutting piece also can change thereupon, and then the axial rigidity of whole motor is changed all thereupon, because the axial rigidity of motor is relevant with the axial natural frequency of motor, when the axial rigidity of motor changes, the axial natural frequency of motor also changes thereupon, thus the axial natural frequency of motor of the present invention can be regulated by rigidity adjuster, to avoid axial oscillations, extend the useful life of motor.Accordingly, the axial natural frequency applying the wind turbine generator of above-mentioned motor also can be regulated by rigidity adjuster, to avoid axial oscillations, makes the useful life of wind turbine generator longer.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view that a kind of wind-driven generator that prior art provides is connected with base;
Fig. 2 is the cross-sectional view that a kind of motor that the first example of embodiments of the invention one provides is connected with base;
Fig. 3 is the structure for amplifying schematic diagram at A place in Fig. 2;
Fig. 4 is the cross-sectional view that a kind of motor that the second example of embodiments of the invention one provides is connected with base;
Fig. 5 is the cross-sectional view that a kind of motor that embodiments of the invention two provide is connected with base;
Fig. 6 is the cross-sectional view that a kind of motor that the first example of embodiments of the invention three provides is connected with base;
Fig. 7 is the structure for amplifying schematic diagram at B place in Fig. 6;
Fig. 8 is the cross-sectional view that a kind of motor that the second example of embodiments of the invention three provides is connected with base;
Fig. 9 is the cross-sectional view that a kind of motor that the first example of embodiments of the invention four provides is connected with base;
Figure 10 is the cross-sectional view that a kind of motor that the second example of embodiments of the invention four provides is connected with base;
Figure 11 is the cross-sectional view that a kind of motor that the 3rd example of embodiments of the invention four provides is connected with base.
Drawing reference numeral illustrates:
1: dead axle; 2: rack body; 3: strutting piece; 4: rigidity adjuster; 5: base; 6: iron core winding; 7: rotor magnetic pole; 8: rotor field spider; 9: rotating shaft; 10: stator support; 11: the flange of dead axle; 20: rotor; 51: the flange of base; 411: the first studs; The first end of 4111: the first studs; Second end of 4112: the first studs; 412: the first adjusting nuts; 413: the first stop nuts; 421: the first screw elements; 422: wirerope; 423: the second screw elements; 424: the second adjusting nuts; 431: flower basket bolt member; 432: the second studs; The first end of 4321: the second studs; Second end of 4322: the second studs; 433: the three studs; The first end of 4331: the three studs; Second end of 4332: the three studs; 434: the second stop nuts; 435: the three stop nuts; 441: cylinder body; 442: drive rod.
Embodiment
For further setting forth the present invention for the technological means reaching predetermined goal of the invention and take and effect, below in conjunction with accompanying drawing and preferred embodiment, to according to the embodiment of the present patent application, structure, feature and effect thereof, be described in detail as follows.In addition, special characteristic, structure or feature in one or more embodiment can be combined by any suitable form.
As shown in Figures 2 to 11, motor of the present invention comprises stator, dead axle 1, rotor, rotating shaft 9 and at least one rigidity adjuster 4.Stator comprises stator support 10 and iron core winding 6.The strutting piece 3 that stator support 10 comprises rack body 2 and is arranged on rack body 2.Iron core winding 6 is arranged on rack body 2.The rotor magnetic pole 7 that rotor comprises rotor field spider 8 and is arranged on rotor field spider 8.Rotor magnetic pole 7 is suitable with iron core winding 6, and the periphery of wound core winding 6 is arranged.Rotating shaft 9 is connected with rotor field spider 8, to provide support rotor field spider 8.Dead axle 1 through strutting piece 3, and is fixedly connected with strutting piece 3.The first end of dead axle 1 is connected with outside base 5, forms an entirety to make dead axle 1 and base 5.Base 5 can provide stable supporting role to whole motor.Second end and the rotating shaft 9 of dead axle 1 are rotationally connected by bearing, can relatively rotate to make both dead axle 1 and rotating shaft 9.The axis of dead axle 1 overlaps with stator center line.The first end of rigidity adjuster 4 is connected with strutting piece 3; Second end of rigidity adjuster 4 is connected with predetermined fixed portion part (such as dead axle 1 or base 5 etc.).Rigidity adjuster 4 can apply adjustable power to strutting piece 3 and predetermined fixed portion part respectively, changes to make the rigidity of strutting piece 3 and predetermined fixed portion part.
In the above-mentioned technical scheme provided, because rigidity adjuster 4 can apply adjustable power to the strutting piece 3 of stator and predetermined fixed portion part (such as dead axle 1 or base 5 etc.), when rigidity adjuster 4 power be applied on the strutting piece 3 of predetermined fixed portion part and stator changes, the axial rigidity of the strutting piece 3 of predetermined fixed portion part and stator also can change thereupon, and then the rigidity of stator changes, and the axial rigidity of whole motor is changed all thereupon, because the axial rigidity of motor is relevant with the axial natural frequency of motor, when the axial rigidity of motor changes, the axial natural frequency of motor also changes thereupon, thus the axial natural frequency of motor of the present invention can be regulated by rigidity adjuster, to avoid axial oscillations, extend the useful life of motor.
Here it should be noted that: the first end of above-mentioned rigidity adjuster 4 and the connecting object of the second end can be exchanged, specifically, can be that the first end of rigidity adjuster 4 is connected with predetermined fixed portion part, the second end of rigidity adjuster 4 be connected with the strutting piece 3 of stator.Wherein, specifically can arrange according to the actual demand of user.
When the concrete enforcement embodiment of the present invention, the first end of above-mentioned rigidity adjuster 4 and the straight line at the second end place can be parallel to stator center line, to make rigidity adjuster 4 be parallel to stator center line to the direction that predetermined fixed portion part and strutting piece 3 apply adjustable power respectively, thus the axial rigidity of motor is regulated.Adopt the scheme being parallel to stator center line, can guarantee that adjustable power can more effectively regulate rigidity.Certainly, in an alternative embodiment, the strutting piece 3 of rigidity adjuster 4 pairs of predetermined fixed portion parts and stator applies the direction of power also can be not parallel with the direction of stator center line, as long as keep almost parallel, can reach the object regulated the axial rigidity of motor equally.
Concrete implement the embodiment of the present invention time, the quantity of aforesaid rigidity adjuster 4 can be multiple, and the plurality of rigidity adjuster 4 is uniformly distributed around stator center line is rounded.In embodiments of the present invention, quantity due to rigidity adjuster 4 is multiple, thus the power that rigidity adjuster 4 pairs of predetermined fixed portion parts and strutting piece 3 are applied has wider adjustable range, and then the axial natural frequency of motor of the present invention is regulated in the larger context.Again because rigidity adjuster 4 is uniformly distributed around stator center line is rounded, what make on strutting piece 3 and predetermined fixed portion part is stressed more even, can effectively prevent strutting piece 3 and predetermined fixed portion part local pressure excessive and cause the phenomenon that stress is concentrated.
Certainly, in an alternative embodiment, aforesaid multiple rigidity adjuster 4 also can not be uniformly distributed around stator center line is rounded, specifically, the plurality of rigidity adjuster 4 also can unevenly be arranged, its concrete distribution mode can be arranged according to the actual demand of user and electric machine structure own characteristic.
When the concrete enforcement embodiment of the present invention, above-mentioned predetermined fixed portion part can be dead axle 1 or base 5 etc.This predetermined fixed portion part is when motor is operationally for the moving component on motor.When motor operationally, dead axle 1, base 5 and stator etc. are predetermined fixed portion part, and rotor and rotating shaft 9 etc. are moving component.
The motor that the embodiment of the present invention provides can be generator (as wind-driven generator) or motor etc., those skilled in the art is to be understood that, generator or motor are only example, and are not used in and limit the technical scheme of the present embodiment, and the motor of other types is also all applicable.
Wherein, the rigidity adjuster 4 of motor of the present invention can specifically adopt the structure in following examples to realize, and is specially:
Embodiment one
As shown in Figures 2 and 3, the first example of the embodiment of the present invention one for predetermined fixed portion part for base 5 carries out the elaboration of concrete structure.Concrete, in the first example of this embodiment one, the second end of aforesaid rigidity adjuster 4 is connected with the extension of the flange 51 on base 5 or flange 51, and this flange 51 is for being connected with dead axle 1.In this example, aforesaid rigidity adjuster 4 can comprise the first stud 411 and the first adjusting nut 412.First stud 411 comprises relative first end 4111 and the second end 4112.The two ends of the first stud 4111 are respectively as the first end of aforementioned rigidity adjuster 4 and the second end.The first end 4111 of the first stud 411 is connected with strutting piece 3.Second end 4112 of the first stud 411 passes the flange 51 of base 5.First adjusting nut 412 is threaded in the second end 4112 of the first stud 411.First adjusting nut 412 is arranged on the side of the flange 51 of base 5, such as inner side or outside.Conveniently turn the first adjusting nut 412, preferably, as shown in Figure 3, the first adjusting nut 412 can be arranged on the outside of the flange 51 of base 5.In this example, because the first end 4111 of the first stud 411 is connected with strutting piece 3, when turning the first adjusting nut 412, first end 4111 pairs of strutting pieces 3 of first stud 411 apply power, accordingly, first adjusting nut 412 also applies power to the flange 51 of base 5, to strain the flange 51 of strutting piece 3 and base 5, power suffered on the flange 51 of strutting piece 3 and base 5 is increased, thus the axial rigidity of motor of the present invention is also increased, and then improve the axial natural frequency of motor of the present invention.Otherwise when oppositely turning the first adjusting nut 412, power suffered on the flange 51 of strutting piece 3 and base 5 reduces, thus makes the axial rigidity of motor of the present invention reduce, and then reduces the axial natural frequency of motor of the present invention.In the present embodiment, can regulate the natural frequency of motor of the present invention by turning the first adjusting nut 412, operating more convenient.
Here it should be noted that: the side (such as inner side or outside) of the side (such as inner side or outside) of aforementioned strutting piece 3 and the flange 51 of base 5 can arrange the first adjusting nut 412 simultaneously, when relative engagement turns this two first adjusting nuts 412, the object that the rigidity of the flange 51 of strutting piece 3 and base 5 is regulated also can be reached.Or also only the first adjusting nut 412 can be set in the side (inner side or outside) of strutting piece 3.Wherein, concrete structure can adopt the above-mentioned side at the flange 51 of base 5 to arrange the version of the first adjusting nut 412, does not repeat them here.
As shown in Figure 4, the second example of the embodiment of the present invention one for predetermined fixed portion part for dead axle 1 carries out the elaboration of concrete structure.Concrete, in this second example, the second end of aforesaid rigidity adjuster 4 is connected with the extension of the flange 11 of dead axle 1 or flange 11, and this flange 11 is for being connected with base 5.In this second example, the concrete structure of rigidity adjuster is substantially identical with the structure of rigidity adjuster in the first example, and difference is: in this second example, and the second end 4112 of aforementioned first stud 411 passes the flange 11 of dead axle 1; First adjusting nut 412 is arranged on inner side or the outside of the flange 11 of dead axle 1.When turning the first adjusting nut 412, the object that the axial rigidity of motor of the present invention is regulated also can be played.
Here it should be noted that: the side (such as inner side or outside) of the side (such as inner side or outside) of aforementioned strutting piece 3 and the flange 11 of dead axle 1 can arrange the first adjusting nut 412 simultaneously, when relative engagement turns this two first adjusting nuts 412, the object that the rigidity of strutting piece 3 and dead axle 1 is regulated also can be reached.Or also only the first adjusting nut 412 can be set in the side (inner side or outside) of strutting piece 3.Wherein, concrete structure can adopt the above-mentioned side at the flange 11 of dead axle 1 to arrange the version of the first adjusting nut 412, does not repeat them here.
In order to the object that the first end 4111 realizing the first stud 411 is connected with strutting piece 3, the embodiment of the present invention can also provide following execution mode: in one example, the first end 4111 of the first stud 411 can weld with strutting piece 3, makes the first stud 411 form an entirety with strutting piece 3; This kind of connected mode connective stability is better, also has locking technique effect simultaneously.In another example, as shown in Figure 3, the first end 4111 of the first stud 411 can be threaded the first stop nut 43 through the first end 4111 of strutting piece 3, first stud 411.First stop nut 43 is arranged on the side of strutting piece 3, such as outside or inner side.Conveniently turn the first stop nut 43, preferably, the first stop nut 43 can be arranged on the outside of strutting piece 3.In the present embodiment, by the first stop nut 43 arranged, the first stud 411 relative support 3 effectively can be stoped to relatively rotate, thus facilitate user to turn the first adjusting nut 412.
In order to make the first stud 411 not relative support 3 rotate, it is locking that the first above-mentioned stop nut 43 can take various ways to carry out, and such as destroys locking thread (as rushed a little), thread locking glue locking (as happy safe 263), pairs of anti-loose nut (tightening top) etc.Its concrete locking mode is common technology of the prior art, can choose in the prior art as required, not repeat them here.
Embodiment two
The structure of the embodiment of the present invention two is substantially identical with the structure in embodiment one, and the main distinction is: the rigidity adjuster in the present embodiment two is different from the structure of the rigidity adjuster in embodiment one.
As shown in Figure 5, rigidity adjuster in the present embodiment two comprises: wirerope 422 and the second adjusting nut 424, the two ends of wirerope 422 are fixedly connected with the first screw element 421 and the second screw element 423 respectively, first screw element 421 is as the first end of aforementioned rigidity adjuster 4, and the second screw element 423 is as the second end of aforementioned rigidity adjuster 4.
As shown in Figure 5, the first example of the embodiment of the present invention two for predetermined fixed portion part for base 5 carries out the elaboration of concrete structure.Concrete, in the first example of this embodiment two, the outside of strutting piece 3 can be provided with the second adjusting nut 424, or the outside of the flange 51 of base 5 can be provided with the second adjusting nut 424, or the outside of the flange 51 of the outside of strutting piece 3 and base 5 is provided with the second adjusting nut 424 simultaneously.Second adjusting nut 424 can match with the first screw element 421 or the second screw element 423, by precession or the back-out of the second adjusting nut 424, applies adjustable power by the flange 51 of the first screw element 421 and the second screw element 423 pairs of strutting pieces and base 5.In embodiment two, because wirerope 422 has flexibility, can bend, not easy fracture.
Second example of the embodiment of the present invention two for predetermined fixed portion part for dead axle 1 carries out the elaboration of concrete structure.Concrete, in the second example of this embodiment two, the outside of strutting piece 3 can be provided with the second adjusting nut 424, or the outside of the flange 11 of dead axle 1 can be provided with the second adjusting nut 424, or the outside of the flange 11 of the outside of strutting piece 3 and dead axle 1 is provided with the second adjusting nut 424 simultaneously.Second adjusting nut 424 can match with the first screw element 421 or the second screw element 423, by precession or the back-out of the second adjusting nut 424, applies adjustable power by the flange 11 of the first screw element 421 and the second screw element 423 pairs of strutting pieces 3 and dead axle 1.
Embodiment three
The structure of the embodiment of the present invention three is substantially identical with the structure in embodiment one, and the main distinction is: the rigidity adjuster in the present embodiment three is different from the structure of the rigidity adjuster in embodiment one.
As shown in Figure 6 and Figure 7, the first example of the embodiment of the present invention three for predetermined fixed portion part for base 5 carries out the elaboration of concrete structure.Concrete, in the first example of this embodiment three, the second end of aforesaid rigidity adjuster 4 is connected with the extension of the flange 51 of base 5 or flange 51.Rigidity adjuster 4 comprises flower basket bolt member 431, second stud 432 and the 3rd stud 433.Second stud 432 has relative first end 4321 and the second end 4322.3rd stud 433 has relative first end 4331 and the second end 4332.Flower basket bolt member 431 is placed between the flange 51 of base 5 and strutting piece 3.Flower basket bolt member 431 has the through hole (not indicating in figure) running through two ends, and the first end (not indicating in figure) of through hole is provided with levogyrate inner thread, and second end (not indicating in figure) of through hole is provided with dextrorotation internal thread.Second stud 432 has the external screw thread suitable with levogyrate inner thread.The first end 4321 of the second stud 432 is connected with strutting piece 3, and the first end 4321 of the second stud 432 is as the first end of rigidity adjuster 4.Second end 4322 of the second stud 432 is threaded with the first end of through hole.3rd stud 433 has the external screw thread suitable with dextrorotation internal thread, and the first end 4331 of the 3rd stud 433 is connected with the flange 51 of base 5, and the first end 4331 of the 3rd stud 433 is as the second end of rigidity adjuster 4.Second end 4332 of the 3rd stud 433 is threaded with the second end of through hole.Because the thread rotary orientation at through hole two ends is contrary, when rotating flower basket bolt member 431 to a direction, flower basket bolt member 431 can strain the flange 51 of strutting piece 3 and base 5 simultaneously by the second stud 432 and the 3rd stud 433, to increase power suffered on strutting piece 3 and base 5, thus the axial rigidity of motor of the present invention is increased, and then improve the axial natural frequency of motor of the present invention; Otherwise, when rotating flower basket bolt member 431 in the opposite direction, flower basket bolt member 431 loosens the flange 51 of strutting piece 3 and base 5 by the second stud 432 and the 3rd stud 433 simultaneously, to reduce power suffered on strutting piece 3 and base 5, thus the axial rigidity of motor of the present invention is reduced, and then reduce the axial natural frequency of motor of the present invention.But, when oppositely turn flower basket bolt member 431 to a certain extent time, the second stud 432 and the 3rd stud 433 can produce thrust to strutting piece 3 and base 5 and increase the axial rigidity of stator again.Wherein, the 4 pairs of strutting pieces 3 of the rigidity adjuster in the present embodiment three and base 5 provide pulling force or thrust, the increment applying the axial rigidity of the motor of this rigidity adjuster 4 with pulling force or thrust increase and increase.In the present embodiment, can regulate the axial natural frequency of motor of the present invention by rotating flower basket bolt member 431, regulating more convenient.
As shown in Figure 8, the second example of the embodiment of the present invention three for predetermined fixed portion part for dead axle 1 carries out the elaboration of concrete structure.Concrete, in the second example of this embodiment three, the second end of rigidity adjuster 4 is connected with the extension of the flange 11 of dead axle 1 or flange 11.In the present embodiment 3 second example, the concrete structure of rigidity adjuster is substantially identical with the structure of rigidity adjuster 4 in the first example, difference is: in this second example, aforesaid flower basket bolt member 431 is placed between the flange 11 of dead axle 1 and strutting piece 3, and the first end 4331 of the 3rd stud 433 is connected with the flange 11 of dead axle 1.When rotating flower basket bolt member 431, the object that the axial rigidity of motor of the present invention is regulated also can be played.
In order to the object that the first end 4321 realizing the second stud 432 is connected with strutting piece 3, the embodiment of the present invention can also provide following execution mode: in one example, the first end 4321 of the second stud 432 can weld with strutting piece 3, makes the second stud 432 form an entirety with strutting piece 3; This kind of connected mode connective stability is better, also has locking technique effect simultaneously.In another example, as shown in Figure 7, the first end 4321 of the second stud 432 can be threaded the second stop nut 434 through the first end 4321 of strutting piece 3, second stud 432.Second stop nut 434 is arranged at the side of strutting piece 3, such as inner side or outside.Conveniently turn the second stop nut 434, preferably, the second stop nut 434 can be arranged on the outside of strutting piece 3.In the present embodiment, by the second stop nut 434 arranged, the second stud 432 relative support 3 effectively can be stoped to relatively rotate, thus facilitate user to rotate flower basket bolt member 431.
In order to make the second stud 432 not relative support 3 rotate, it is locking that the second above-mentioned stop nut 434 can take various ways to carry out, and such as destroys locking thread (as rushed a little), thread locking glue locking (as happy safe 263), pairs of anti-loose nut (tightening top) etc.Its concrete locking mode is common technology of the prior art, can choose in the prior art as required, not repeat them here.
From description above, in order to the object that the flange 11 of first end 4331 with dead axle 1 that realizes the 3rd stud 433 or the flange 51 of base 5 are connected, its version that the first end 4321 of the second stud 432 can be adopted to be connected with strutting piece 3, such as the first end 4331 of the 3rd stud 433 welds with the flange 51 of the flange 11 of dead axle 1 or base 5; Or as shown in Figure 6 and Figure 7, the first end of the 3rd stud 433 4331 is arranged at inner side or the outside of the flange 51 of base 5 through the first end 4331 of flange the 51, three stud 433 of base 5 the 3rd stop nut the 435, three stop nut 435 that has been threaded; Or as shown in Figure 8, the first end of the 3rd stud 433 4331 is arranged at inner side or the outside of the flange 11 of dead axle 1 through flange the 11, three stop nut 435 of dead axle 1.Wherein, concrete realization and operation principle see the corresponding content in above-described embodiment, can repeat no more herein.
Embodiment four
The structure of the embodiment of the present invention four is substantially identical with the structure in embodiment one, and the main distinction is: the rigidity adjuster in the present embodiment four is different from the structure of the rigidity adjuster in embodiment one.
As shown in Figure 9 and Figure 10, the rigidity adjuster 4 of the embodiment of the present invention four comprises driving cylinder.This driving cylinder have cylinder body 441 with can the flexible drive rod 442 of relative this cylinder body 441.This driving cylinder can be pneumatic cylinder or hydraulic cylinder etc.
As shown in Figure 9, the first example of the embodiment of the present invention four for predetermined fixed portion part for base 5 carries out the elaboration of concrete structure.Concrete, in the first example of this embodiment four, drive rod 442 can be connected with strutting piece 3 as the first end of rigidity adjuster 4, and cylinder body 441 can be connected with the flange 51 of base 5 or the extension of flange 51 as the second end of rigidity adjuster 4.In the present embodiment, driving cylinder provides pulling force or thrust to strutting piece 3 and base 5, the increment of the axial rigidity of motor with pulling force or thrust increase and increase.Wherein, by the driving cylinder in the present embodiment, the electronic axial rigidity to motor can regulate, eliminate the inconvenience manually turning nut, operate more convenient.
As shown in Figure 10, the second example of the embodiment of the present invention four for predetermined fixed portion part for dead axle 1 carries out the elaboration of concrete structure.Concrete, in the second example of this embodiment four, drive rod 442 can be connected with strutting piece 3 as the first end of rigidity adjuster 4, and cylinder body 441 can be connected with the flange 11 of dead axle 1 or the extension of flange 11 as the second end of rigidity adjuster 4.In this second example, when starting driving cylinder, also can play the object that the axial rigidity of motor is regulated.
Here it should be noted that: the cylinder body 441 of above-mentioned driving cylinder and the connecting object of drive rod 442 can be exchanged, in other words: the cylinder body 441 of driving cylinder can be connected with strutting piece 3, the drive rod 442 of driving cylinder can be connected with the flange 51 of the flange 11 of dead axle 1 or base 5, also can reach the object regulated the rigidity of motor of the present invention thus.
It should be noted that, in the 3rd example of the embodiment of the present invention four, when arranging multiple rigidity adjuster 4, the plurality of rigidity adjuster 4 can be the rigidity adjuster 4 of uniform type structure, also can be dissimilar rigidity adjuster 4, such as: as shown in figure 11, rigidity adjuster can comprise at least two kinds in rotation rigidity adjuster, hydraulic rigidity adjuster and air-pressure type rigidity adjuster.Rotation adjusting device can correspond to corresponding structure in embodiment one, embodiment two and embodiment three, and hydraulic rigidity adjuster and air-pressure type rigidity adjuster can corresponding to structures corresponding in the first example of embodiment four and the second example.Wherein, concrete realization and operation principle see the corresponding content in above-described embodiment, can repeat no more herein.
Embodiment five
As shown in Fig. 2, Fig. 4 to Fig. 6, Fig. 9 to Figure 11, it is the part-structure schematic diagram of multiple embodiments of the wind turbine generator of the present invention's proposition.Described wind turbine generator, comprises base 5 and motor.Wherein, motor, comprise dead axle 1 and there is the stator of strutting piece 3, motor also comprises at least one rigidity adjuster 4, the first end of rigidity adjuster 4 is connected with strutting piece 3, second end of rigidity adjuster 4 is connected with predetermined fixed portion part, and rigidity adjuster 4 can apply adjustable power to strutting piece 3 and predetermined fixed portion part respectively, changes to make the rigidity of stator.Wherein, predetermined fixed portion part is dead axle 1 or base 5.Above-mentioned base 5 is connected with the dead axle 1 of motor.
Here it should be noted that: motor involved in the present embodiment five can adopt the electric machine structure described in above-described embodiment one to embodiment four, concrete realization and operation principle see content corresponding in above-described embodiment one to embodiment four, can repeat no more herein.
Because the axial natural frequency of motor can be regulated by rigidity adjuster 4, so the axial natural frequency applying the wind turbine generator of this motor also can be regulated by rigidity adjuster 4, to avoid the generation of axial oscillations phenomenon, the useful life of wind turbine generator is longer.
Embodiment six
Embodiments of the invention six also provide a kind of rigidity adjuster, are applied to motor.Rigidity adjuster comprises first end and the second end.First end is used for being connected with the strutting piece of motor, and the second end is used for being connected with predetermined fixed portion part.Wherein, rigidity adjuster applies adjustable power to strutting piece and predetermined fixed portion part respectively by first end and the second end, changes with the rigidity of the stator making motor.
Here it should be noted that: rigidity adjuster involved in the present embodiment six can adopt the structure of the rigidity adjuster 4 described in above-described embodiment one to embodiment four, concrete realization and operation principle see content corresponding in above-described embodiment one to embodiment four, can repeat no more herein.
Rigidity adjuster in the present embodiment six can regulate the axial natural frequency of motor and wind turbine generator, with the generation enabling motor and wind turbine generator avoid axial oscillations phenomenon, and then extend the useful life of motor and wind turbine generator.
According to above embodiment, motor of the present invention, wind turbine generator and rigidity adjuster at least have following advantages:
The present invention is regulated by the axial rigidity of the rigidity adjuster 4 pairs of motor stators arranged, thus make the axial natural frequency of motor stator adjustable in certain interval, and then the axial natural frequency of the motor of this stator of application and wind turbine generator also can be regulated by rigidity adjuster 4, to avoid the generation of axial oscillations phenomenon, the useful life of motor and wind turbine generator is longer.
The above, it is only preferred embodiment of the present invention, not do any pro forma restriction to the present invention, any simple modification done above embodiment according to technical spirit of the present invention, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (12)
1. a motor, comprise dead axle (1) and have the stator of strutting piece (3), it is characterized in that, described motor also comprises:
At least one rigidity adjuster (4), its first end is connected with described strutting piece (3), its second end is connected with predetermined fixed portion part, for applying adjustable power to described strutting piece (3) and described predetermined fixed portion part respectively, change to make the rigidity of described stator;
Wherein, described predetermined fixed portion part is the base (5) of described dead axle (1) or outside.
2. motor as claimed in claim 1, is characterized in that,
The straight line parallel at described first end and described second end place, in stator center line, is parallel to described stator center line to make the direction of described adjustable power.
3. motor as claimed in claim 1, it is characterized in that, described rigidity adjuster (4) comprising:
First stud (411), its two ends are described first end and the second end;
First adjusting nut (412), be positioned at inner side or the outside of described first strutting piece (3) and/or described predetermined fixed portion part, match with described first stud (411), by the precession of described first adjusting nut (412) on described first stud (411) or back-out, by described first stud (411), adjustable power is applied to described first strutting piece (3) and described predetermined fixed portion part.
4. motor as claimed in claim 3, is characterized in that,
Described first end welds with described strutting piece (3); Or,
Described first end is through described strutting piece (3), and described first end has been threaded the first stop nut (413), and described first stop nut (413) is arranged at inner side or the outside of described strutting piece (3).
5. motor as claimed in claim 1, it is characterized in that, described rigidity adjuster (4) comprising:
Wirerope (422), the two ends of described wirerope (422) are fixedly connected with the first screw element (421) and the second screw element (423) respectively, described first screw element (421) is as described first end, and described second screw element (423) is as the second described end;
Second adjusting nut (424), be positioned at the outside of described first strutting piece (3) and/or described predetermined fixed portion part, match with described first screw element (421) or described second screw element (423), by the precession of described second adjusting nut (424) on described first screw element (421) or described second screw element (423) or back-out, by described first screw element (421) and described second screw element (423), adjustable power is applied to described first strutting piece (3) and described predetermined fixed portion part.
6. motor as claimed in claim 1, it is characterized in that, described rigidity adjuster (4) comprising:
Flower basket bolt member (431), be placed between described predetermined fixed portion part and described first strutting piece (3), described flower basket bolt member (431) has the through hole running through two ends; The two ends of described through hole are respectively equipped with levogyrate inner thread and dextrorotation internal thread;
Second stud (432), is connected with described levogyrate inner thread, and described second stud (432) is as described first end;
3rd stud (433), is connected with described dextrorotation internal thread, and described 3rd stud (433) is as the second described end.
7. motor as claimed in claim 6, is characterized in that,
Described first end welds with described first strutting piece (3);
Or,
Described first end is through described first strutting piece (3), described first end has been threaded the second stop nut (434), and described second stop nut (434) is arranged at inner side or the outside of described first strutting piece (3).
8. motor as claimed in claim 1, it is characterized in that, described rigidity adjuster (4) comprising:
Driving cylinder, its have cylinder body (441) with can the flexible drive rod (442) of relative described cylinder body (441);
Wherein, described drive rod (442) is as described first end, and described cylinder body (441) is as the second described end.
9. the motor according to any one of claim 1-8, is characterized in that,
Described second end is connected with the extension of the first flange (11) on described dead axle (1) or the first flange (11), and described first flange (11) is for being connected with base (5);
Or described second end is connected with the extension of the second flange (51) on described base (5) or the second flange (51), and described second flange (51) is for being connected with dead axle (1).
10. the motor according to any one of claim 1-8, is characterized in that,
Described rigidity adjuster (4), for multiple, is uniformly distributed around stator center line is rounded.
11. 1 kinds of wind turbine generator, comprise base (5), it is characterized in that, also comprise the motor according to any one of claim 1 to 10, and described base (5) is connected with the dead axle (1) of described motor.
12. 1 kinds of rigidity adjusters, are applied to motor, it is characterized in that, described rigidity adjuster comprises first end and the second end;
Described first end is used for being connected with the strutting piece (3) of described motor, and described second end is used for being connected with predetermined fixed portion part; Described predetermined fixed portion part is the dead axle (1) of base (5) or described motor;
Wherein, described rigidity adjuster applies adjustable power to described strutting piece (3) and described predetermined fixed portion part respectively by described first end and described second end, changes with the rigidity of the stator making described motor.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510658069.8A CN105305708B (en) | 2015-10-13 | 2015-10-13 | Motor, wind generating set and rigidity adjusting device |
| KR1020160016320A KR20170043426A (en) | 2015-10-13 | 2016-02-12 | Electric motor, windpower generator set and stiffness regulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510658069.8A CN105305708B (en) | 2015-10-13 | 2015-10-13 | Motor, wind generating set and rigidity adjusting device |
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| CN105305708A true CN105305708A (en) | 2016-02-03 |
| CN105305708B CN105305708B (en) | 2018-07-31 |
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| CN201510658069.8A Active CN105305708B (en) | 2015-10-13 | 2015-10-13 | Motor, wind generating set and rigidity adjusting device |
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| KR (1) | KR20170043426A (en) |
| CN (1) | CN105305708B (en) |
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| CN113833598A (en) * | 2021-08-20 | 2021-12-24 | 太原重工股份有限公司 | Hub and main shaft connecting structure and connecting method in wind turbine generator |
| CN115395708A (en) * | 2021-05-25 | 2022-11-25 | 北京金风科创风电设备有限公司 | Power generation device, maintenance method thereof and wind generating set |
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| CN113833598B (en) * | 2021-08-20 | 2024-03-22 | 太原重工股份有限公司 | Hub and main shaft connecting structure and connecting method in wind turbine generator system |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20170043426A (en) | 2017-04-21 |
| CN105305708B (en) | 2018-07-31 |
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