The auxiliary drive device of rotor for wind power plantTechnical field
The present invention relates to a kind of auxiliary drive device of rotor for wind power plant, the wherein auxiliary drive deviceWith pinion gear, which is supported in a manner of it can adjust transverse to pinion axes, and can optionally be sent out with wind-forceSame pinion shaft in the power train of electric equipment is engaged and is detached to the gear of parallel arrangement.
Background technique
Auxiliary drive device for machine for doing work passes through known to file DE2405721.The auxiliary drive in this documentDevice is necessary in this document, is to make the rotor for being subjected to very high temperature slowly continue to revolve after operation stopsTurn, and then the undesirable deformation to avoid rotor.
The pinion gear of auxiliary drive device is arranged at swing arm in this case and can be by the swing of swing armWith the gear engagement or disengagement of rotor.
Auxiliary drive device for wind power plant passes through known to file EP2315942.It assists in this caseThe connection of driving device is accomplished by the following way, i.e., pinion gear is arranged on its axis and is passed through in a manner of being axially movableThe movement is engaged or is detached from the associated gear in the power train of rotor.
Summary of the invention
The present invention relates to the auxiliary drive device for wind power plant, which allows, and carries out rotorMaintenance work when rotor operation stops, being rotating slowly rotor after unlocking, so that later if possible againRotor described in secondary locking.It is in main task of the invention, researches and develops a kind of stable, but cost-effective and compact is used for instituteState the structure of auxiliary drive device.
The task solves in the following manner according to the present invention, i.e., the bearing of the described pinion gear by with the bearing arranged off-centreEccentric hoop surround, the eccentric hoop rotatably supports at its outer peripheral edge, and eccentricity is determined to so that describedPinion gear can be engaged and be detached from the realization of the gear of the power train referred to by the rotation of the eccentric hoop.
The major advantage of the bearing of bias according to the present invention is: the bearing constructs extremely compact and at the same time radialGround steadily supports the auxiliary drive device and its pinion gear in all directions.Furthermore the outstanding point of structure of the invention existsIn cost-effective construction and have a small amount of component.
Eccentric hoop not only carries the pinion gear of the auxiliary drive device in an advantageous further development of the invention,And the motor of the auxiliary drive device is carried simultaneously.Thus significantly simplified again, for substituting in fileIn order to connect four gears necessary to auxiliary drive device in DE2405721, presently described pinion gear is with regard to enough.
The construction for compact and cost-effective the auxiliary drive device striven can be further perfect in the following manner, i.e. instituteAuxiliary drive device is stated coaxially to connect with its pinion gear and do not connect speed change grade in centre.
There is a possibility that so in principle, i.e., by the eccentric hoop of the bearing of the pinion gear and the encirclement bearingIt is permanently connected.Pinion bearing and the auxiliary drive device being connected at the pinion bearing are in institute in this caseIt states and also undergoes rotation when eccentric hoop itself rotates.If such rotation should not be sent out in view of the electric connection of the auxiliary drive deviceRaw, then described pinion bearing itself can be rotated to support in the eccentric hoop, so that the pinion bearing need notThe rotation of the eccentric hoop is forcibly participated in, but only carries out the displacement transverse to pinion axes.
Described eccentric hoop itself can be rotated to support at the component of the wind power plant, preferably rotatably prop upIt holds at the case of transmission of the wind power plant.The rotation of the eccentric hoop passes through stretching in the simplest caseRocking lever manually realizes that the rocking lever is connect with the eccentric hoop.It is obvious that the rotation can also pass throughThe mode of motor driving carries out.It is preferably in the speed changer by the gear that the auxiliary drive device drives and is instituteA part of speed changer is stated, to obtain structural form as compact as possible.It especially can be set to, in the outlet side or extremely of speed changerGear at a few transmission gear, the gear are operated with revolving speed more higher than the rotor itself and lower torque.
Especially recommend in the case where the eccentric hoop can be manually rotated, the eccentric hoop its rotation when directly or indirectly withThe fixed stop part at least one position is corresponding, which limits the mentioned gear of the pinion gear Yu the power trainEngagement or the theoretical position being detached from.Thus it on the one hand can guarantee, the pinion gear has appropriate connect in its bonding stationDepth is closed, to can neither occur blocking nor occurring too small radial coincidence and thus caused raising in mesh regionalStress.On the other hand it can ensure that, the pinion gear completely disengages.
In order to avoid the unintentionally rotation of the eccentric hoop, the eccentric hoop can be in two theoretical position at leastOne middle stop, and preferably realized by its rocking lever.
Furthermore the present invention relates to a kind of wind power plants, with rotor, generator, are arranged between rotor and generatorFor mentioning high-revolving speed changer and the auxiliary drive device for the rotor.The auxiliary drive device has small toothWheel, which is supported in a manner of it can adjust transverse to pinion axes, and can optionally be set with the wind-power electricity generationSame pinion shaft in standby power train is engaged and is detached to the gear of parallel arrangement.The gear is arranged according to the present inventionWithin the speed changer and the bearing of the pinion gear is surrounded by the eccentric hoop for being eccentric in bearing arrangement.The eccentric hoop withIt can be supported at the housing wall of the speed changer around the mode of axis corresponding with its outer peripheral edge rotation, and eccentricity is reallySurely enable to the pinion gear can be realized by the rotation of the eccentric hoop with the gear that refers to of the power train engage andIt is detached from.
Detailed description of the invention
Obtain from the description of embodiment and from attached drawing other advantages and features of the invention；Herein:
Fig. 1 shows the side view of wind power plant；
Fig. 2 shows the oblique view of auxiliary drive device and the corresponding gear in power train, wherein pinion gearIt is in and engages with the gear referred to；
Fig. 3 shows oblique view according to fig. 2, and wherein pinion gear is detached from the gear referred to.
Specific embodiment
Tower 1 is seen in Fig. 1, the tower 1 carry at its upper end and can rotate around the vertical axis outer cover 2.?The rotor 3 of level of approximation extension is supported in outer cover 2, which is located at the end except outer cover at it and carries multiple radial directionsThe rotor blade 4 of extension, and the inner end of the rotor 3 is connect with speed changer 5.The low-rotate speed of rotor 3 is changed in the transmissionIt is fast revolving speed to be used for driven generator 6.
Towards arrangement auxiliary drive device 7 on that side of generator 6 in speed changer 5, which is being neededIt can be engaged with the gear 8 in the transmission on axis 9 when wanting.Auxiliary drive device 7 is assemblied at the housing wall of speed changer 5.It is auxiliaryDriving device 7 is helped therefore to integrate with speed changer 5.The mode of action of auxiliary drive device 7 is shown from Fig. 2 and 3.
A part of axis 9 ' in the transmission is seen in both figures, which connects with the output shaft of speed changer 5 indirectlyIt connects, the output axle driven dynamo 6.The pinion gear 7a of 9 ' carrier gear 8 of axis, auxiliary drive device 7 can be engaged with the gear 8,As shown in Figure 2.Optionally, can also be arranged between axis 9 ' and generator 6 additional not shown for further hereinConvert more high-revolving transmission gear.
Pinion gear 7a can be rotated to support in pinion bearing 10 and the pinion bearing 10 is prejudicially arranged in partiallyIn thimble 11.It can be rotated to support in eccentric hoop 11 in this pinion bearing 10 itself, but pinion bearing 10It can be permanently connected with eccentric hoop.
Importantly, eccentric hoop 11 itself is can surround in-between axis, that is to say, that with not surround pinion axes andIt is that the mode rotated around the medial axis of itself of its eccentric setting supports, so bearing is so that the rotation of eccentric hoop 11 causesPinion axes deviate in a lateral direction.
Eccentric hoop 11 can be rotated to support on position in its outer peripheral edge or the peripheral region concentric with its outer peripheral edge for this purposeIt sets at fixed mechanical part, is supported at the housing wall 5a of speed changer 5 in this embodiment.
Eccentricity, i.e. pinion axes should at least so relative to the offset of the rotation axis of eccentric hoop 11 in parallelSize, the position engaged with gear 8 for enabling to pinion gear 7a that can show in Fig. 2 from it are rocked to as shown in Figure 3 quietStop bit is set, and engagement is no longer provided in the resting position, and is to ensure that certain safe spacing between pinion gear and gear.
The rotation of eccentric hoop 11 is manually realized by rocking lever 12 connected to it.Rocking lever in this embodiment12 on the bonding station of pinion gear 7a and gear 8, in approximately perpendicularly upwards, and according to the static of the pinion gear of Fig. 3Position is with being then near vertical downward.Therefore rotation angle is 180 °.That is, eccentricity so selects, enable to partiallyThe heart is away from just enough taking pinion gear in resting position from bonding station to.It should be evident that eccentricity also may be selected to more greatly,To which rocking lever 12 need not swing 180 °, but it for example need to only swing 90 °.
Fig. 2 and 3 has also been shown that the rotation of eccentric hoop 11 does not only result in the laterally offset of pinion bearing 10, and sameGround leads to the laterally offset of the motor 13 of driving pinion, which is coaxially arranged and equally relative to pinion axesIt is connect with eccentric hoop 11.
If motor 13 should not participate in the rotation occurred when eccentric hoop 11 rotates, motor 13 itself being capable of rotatable twelve Earthly BranchesIt holds at eccentric hoop 11, it more specifically can be with the offset with the similar and different bias of pinion bearing 10.Pinion bearing10 form unified structure member with motor 13, which prejudicially can be rotated to support on bias at its outer peripheral edgeWithin ring 11.
Eccentric hoop 11 can be constructed as the form for being rotatably disposed in the flange at the housing wall 5a of speed changer 5.It is fixedIt can be realized by means of fixing bolt.If rotating eccentric hoop, fixed thread is unscrewed, so that eccentric hoop is freely rotatable.AuxiliaryThe adjustment of driving device 7 or its driving pinion 7a therefore can by unclamp the connection of flange spiral, rotating eccentricity ring 11 andSpiral connection is tightened again to realize.
Optionally, settable label or additional sensor, the label or additional sensor be used to be shownOr corresponding signal is generated, which shows whether auxiliary drive device 7 reliably engages or separate.
The rotation angle of eccentric hoop 11 can be limited by means of stop part, so that pinion gear 7a and gear 8 can be suitble toIt is engaged in the case of wheelbase.Therefore it can reliably avoid blocking between pinion gear 7a and gear 8 or too small coincidence.It is such to stopBlock piece can be for example by forming with dowel pin and affiliated matching hole.Eccentric hoop 11 can pass through cunning relative to the bearing of speed change wall 5aMoving sleeve is realized.Such sliding sleeve is on the one hand low maintenance rate and on the other hand to can be realized pinion gear 7a lasting,Smooth manipulation or adjustment.