CN202381256U - Stepless propeller pitch conversion system of middle/small power wind-driven generator - Google Patents

Stepless propeller pitch conversion system of middle/small power wind-driven generator Download PDF

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CN202381256U
CN202381256U CN2011205513689U CN201120551368U CN202381256U CN 202381256 U CN202381256 U CN 202381256U CN 2011205513689 U CN2011205513689 U CN 2011205513689U CN 201120551368 U CN201120551368 U CN 201120551368U CN 202381256 U CN202381256 U CN 202381256U
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fork
wind
pitch
bearing
conversion system
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李卿韶
常东来
贺琦
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Zkenergy Science & Technology Co Ltd
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Zkenergy Science & Technology Co Ltd
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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
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    • Y02E10/72—Wind turbines with rotation axis in wind direction

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Abstract

本实用新型提供一种中、小功率风力发电机的无级桨距变换系统，该系统包括有驱动电机、螺纹副、拔叉、拔叉支撑、导轴套、轴承、变桨滑槽机构和曲柄滑块机构，螺纹副将驱动电机输出的旋转运动转换成沿螺纹副轴线的直线运动，螺纹副与拔叉的上端相连，拔叉的下端与轴承的外圈相连，拔叉的中部与固定的拔叉支撑通过第二销轴相连，其中导轴套套接在风力发电机主轴上，变桨滑块机构与导轴套固定连接，变桨滑块机构包括若干个滑槽，曲柄滑块机构包括有若干个曲柄滑块，滑块安装在滑槽内。该系统以电机驱动代替了液压驱动，使得响应速度快、环境适应能力强、成本低，且在机械执行单元的协同作用下，桨距变换过程中的各个叶片的桨距角始终保持一致。

Figure 201120551368

The utility model provides a stepless pitch conversion system for medium and small power wind power generators. The system includes a drive motor, a thread pair, a fork, a fork support, a guide shaft sleeve, a bearing, a pitch change chute mechanism and Crank-slider mechanism, the threaded pair converts the rotary motion output by the drive motor into a linear motion along the axis of the threaded pair, the threaded pair is connected with the upper end of the fork, the lower end of the fork is connected with the outer ring of the bearing, the middle part of the fork is connected with the fixed The fork support is connected through the second pin shaft, wherein the guide shaft sleeve is sleeved on the main shaft of the wind turbine, and the pitch slider mechanism is fixedly connected with the guide shaft sleeve. The pitch slider mechanism includes several chutes, and the crank slider mechanism includes There are several crank sliders, and the sliders are installed in the chute. The system uses motor drive instead of hydraulic drive, which makes the response speed fast, the environment adaptability is strong, and the cost is low. Under the synergy of the mechanical execution unit, the pitch angle of each blade during the pitch change process is always consistent.

Figure 201120551368

Description

In, the stepless pitch transformation system of low power wind driven generator
Technical field
The utility model belongs to technical field of wind power generation, particularly a kind ofly is used for, the stepless pitch transformation system of low power wind driven generator.
Background technique
Of the prior artly be used for, the stepless pitch transformation system of low power wind driven generator is mainly the hydraulic vane change spacing mechanism.And hydraulic vane change spacing mechanism ubiquity has slow, the baroque defective of speed of response; And owing to adopted the medium of hydraulic oil as transferring power, receive the influence of hydraulic oil viscosity-temperature characteristic, the adaptive capacity to environment of hydraulic vane change spacing mechanism is poor, for the wind-driven generator that uses in different latitude, also need increase heating or cooling unit.
The model utility content
The utility model provide a kind of in, the stepless pitch transformation system of low power wind driven generator; This system comprises drive motor and by each mechanical performance element of drive motor drives; This system has replaced hydraulic driving with motor driving; Make that speed of response is fast, adaptive capacity to environment is strong, cost is low, and under the synergy of mechanical performance element, the propeller pitch angle of each blade in the pitch conversion process remains unanimity.
Technological scheme:
In a kind of, the stepless pitch transformation system of low power wind driven generator; Said wind-driven generator comprises blade, wind driven generator principal shaft and generator; It is characterized in that; Said stepless pitch transformation system includes drive motor, screw pair, fork, fork support, guide shaft cover, bearing, change oar slide way mechanism and slidercrank mechanism, and wherein drive motor links to each other with an end of said screw pair, and said screw pair converts rotatablely moving of drive motor output to along the screw pair axis straight line motion; The parallel axes of said screw pair is in the axis of said wind driven generator principal shaft; The other end of said screw pair links to each other through first bearing pin perpendicular to said screw pair axis with the upper end of said fork, and the lower end of said fork links to each other with the outer ring of said bearing, and the middle part of said fork is supported with fixing fork and linked to each other through second bearing pin; Said fork can be around said second bearing pin rotation; Wherein said guide shaft cover is socketed on the wind driven generator principal shaft, and said guide shaft cover can be with wind-driven generator main axis rotation and can moving axially along wind driven generator principal shaft, and the inner ring interference of said bearing is installed on the outer wall of guide shaft cover; Said change oar slide-block mechanism is fixedly connected with said guide shaft cover; Wherein said change oar slide-block mechanism include central axis with wind driven generator principal shaft be the center and around this center equally distributed several chutes corresponding to blade quantity, the conduit of said chute is all perpendicular to the axis of wind driven generator principal shaft, said slidercrank mechanism includes several crank blocks corresponding to blade quantity; Said each crank block includes slide block and crank; Said slide block is installed in the chute and can in chute, slides, and the near-end of said crank is connected through bearing pin with slide block, and the far-end of said crank is fixedly connected with sharf.
Said drive motor and screw pair are positioned at the top of said generator.
Said screw pair includes and has externally threaded output shaft, has the propeller shaft sleeve of internal thread and fixing propeller shaft sleeve draw-in groove; Said output shaft links to each other with said drive motor and rotation under the driving of said drive motor; The internal thread at said propeller shaft sleeve rear portion matches with the outside thread of said output shaft; Said propeller shaft sleeve draw-in groove is passed in the front portion of said propeller shaft sleeve; The anterior cross section of said propeller shaft sleeve is non-circular, and the anterior suitable propeller shaft sleeve that makes of cross section of the cross section of said propeller shaft sleeve draw-in groove and said propeller shaft sleeve only can moving axially along screw pair under the constraint of propeller shaft sleeve draw-in groove.
The upper end of said fork is a pair of U type fork; The two ends of the protrusion propeller shaft sleeve of said first bearing pin lay respectively in two U type forks; Moving axially of said propeller shaft sleeve can be rotated around said second bearing pin through the upper end of first bearing pin and a pair of U type fork drive fork, and then the lower end of fork drives said bearing through bearing outer ring and guide shaft is enclosed within along producing displacement on the direction of wind driven generator principal shaft.
Be connected with a pair of draw-in groove on the lower end of said fork, said a pair of draw-in groove is distributed in the left and right sides of said bearing, and the forward and backward side of said draw-in groove is blocked the front-end face and the ear end face of said bearing outer ring respectively.
Connect through flat key between said guide shaft cover and the said wind driven generator principal shaft; Keyway on said flat key and the said wind driven generator principal shaft is isometric; And said flat key interference is installed in the keyway of said wind driven generator principal shaft; The keyway length of said guide shaft cover is less than the keyway length of said wind driven generator principal shaft, and the keyway and the said flat key Spielpassung of said guide shaft cover.
Said wind-driven generator includes three blades, and said change oar slide way mechanism includes three chutes, and said three chutes link to each other and are the equilateral triangle frame structure; Correspondingly, slidercrank mechanism includes three crank blocks.
Said three chutes are provided with connection strap between any two, with the change oar slide way mechanism of the hexagonal-shaped frame structure that is integrally formed.
Side near becoming the oar slide way mechanism of said guide shaft cover is provided with flange, is fixedly connected between said flange and the said connection strap.
Said wind-driven generator includes two blades, and said change oar slide way mechanism includes two chutes, and correspondingly, said slidercrank mechanism includes two crank blocks; Or said wind-driven generator includes four blades, and said change oar slide way mechanism includes four chutes, and correspondingly, said slidercrank mechanism includes four crank blocks.
Said bearing is a double-row angular contact bal bearing.
Technique effect:
The utility model provide a kind of in, the stepless pitch transformation system of low power wind driven generator, be used to regulate the pitch of wind-driven generator.This stepless pitch transformation system includes drive motor, screw pair, fork, fork support, guide shaft cover, bearing, change oar slide way mechanism and slidercrank mechanism; When needs are regulated pitch; Drive motor work; Screw pair converts rotatablely moving of drive motor output to along the screw pair axis straight line motion; The other end of screw pair drives the fork upper end around the rotation of first bearing pin, and the outer ring of stirring bearing, lower end of fork was moved and driven the guide shaft cover and become the oar slide way mechanism along wind driven generator principal shaft and moves vertically this moment, and each chute converts moving axially of chute to around sharf rotation through slide block and crank; Thereby realize the pitch mapping function, and can guarantee that the propeller pitch angle of each blade in the pitch conversion process remains unanimity.
Drive motor and screw pair are arranged on the top of generator, so that the Position Design of whole stepless pitch transformation system.
Screw pair comprises output shaft and propeller shaft sleeve and propeller shaft sleeve draw-in groove; Because the anterior cross section of propeller shaft sleeve is non-circular, the cross section of the cross section of propeller shaft sleeve draw-in groove and propeller shaft sleeve front portion is suitable, therefore; Propeller shaft sleeve can only be done axial moving under the constraint of propeller shaft sleeve draw-in groove; When output shaft and propeller shaft sleeve relative movement, propeller shaft sleeve does not rotate and only moves vertically, with so that drive fork and rotate around first bearing pin.
The upper end of fork wherein is a pair of U type fork; A pair of U type fork lays respectively at the and arranged on left and right sides of propeller shaft sleeve, and the two ends of first bearing pin lay respectively in the corresponding U type fork, when propeller shaft sleeve moves forward and backward; First bearing pin moves forward and backward thereupon, and first bearing pin drives end motion on the fork through U type fork.
Be connected with a pair of draw-in groove on the lower end of fork; Draw-in groove is stuck on the outer ring of bearing from the left and right sides; When draw-in groove moves with fork, draw-in groove shifting shaft bearing outer-ring, thus drive bearing, guide shaft cover and become the oar slide way mechanism along producing displacement on the wind driven generator principal shaft direction; Bearing is double-row angular contact bal bearing, bidirectional stress vertically.
Preferably; Connect through flat key between guide shaft cover and the wind driven generator principal shaft; Keyway on flat key and the wind driven generator principal shaft is isometric; The keyway length of guide shaft cover is less than the keyway length of wind driven generator principal shaft, and the flat key interference is installed on the keyway of wind driven generator principal shaft, Spielpassung between the keyway of guide shaft cover and the flat key; Making when guide shaft is enclosed within the wind-driven generator main axis rotation can also moving axially along wind driven generator principal shaft; Simultaneously the length of the keyway of wind driven generator principal shaft is that axle sleeve ear end face the wheel hub of wind-driven generator limits with the shaft shoulder that is positioned at the wind driven generator principal shaft in generator the place ahead, and the keyway length of this wind driven generator principal shaft has determined the axial movement that guide shaft overlaps, to avoid the mechanism kinematic dead point.
When blade is three, become the oar slide way mechanism and can be the whole equilateral triangle frame structure of three chutes compositions, can also be three chutes and three hexagonal-shaped frame structures that connection strap distributes alternately and forms.Wherein, when becoming the oar slide way mechanism, can make become compact, quality of the mechanism structure that becomes the oar slide way mechanism become less into the hexagonal-shaped frame structure.
Description of drawings
Fig. 1 is the schematic representation that has the wind-driven generator of stepless pitch transformation system;
Fig. 2 is the sectional view of front portion of the propeller shaft sleeve of the stepless pitch transformation system among Fig. 1;
Fig. 3 is the schematic representation of the change oar slide way mechanism that slide block is installed among Fig. 1;
Fig. 4 is the schematic representation that shift fork and the shift fork among Fig. 1 supports.
Each label example is following among the figure:
The 1-wheel hub, the 2-crank block, the 2-1-slide block, the 2-2-crank, 3-becomes oar slide way mechanism, 3-1-chute, 4-blade; The 4-1-sharf, 5-guide shaft cover, the 5-1-flange, the 6-bearing, the 6-1-inner ring, the 6-2-outer ring, the 7-shift fork supports; 7-1-second bearing pin, 8-shift fork, 8-1-U type fork, 8-2-draw-in groove, 9-screw pair, 9-1-output shaft; The 9-2-propeller shaft sleeve, 9-3 propeller shaft sleeve draw-in groove, 9-4-first bearing pin, 10-drive motor, 11-wind driven generator principal shaft, 12-generator.
Embodiment
For the purpose, technological scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Be illustrated in figure 1 as the wind-driven generator schematic representation that has electrodeless pitch transformation system.Existing wind-driven generator has included wind driven generator principal shaft 11, is socketed in the wheel hub 1 on the wind driven generator principal shaft 11, blade 4, and the axle at blade place is sharf 4-1 and generator 12.Under wind action, blade 4 rotations, blade 4 drives wheel hub 1 rotation, and then wind driven generator principal shaft 11 rotations, makes generator 12 generate electricity.The electrodeless pitch transformation system of the utility model is installed on the wind-driven generator, is used to control the propeller pitch angle of blade 4.Because in, low power wind driven generator is littler than the structure of high-power wind-driven generator, therefore, require to be used for, the structure of the electrodeless pitch transformation system of low power wind driven generator is more compact.Like figure, electrodeless pitch transformation system includes: become oar slide way mechanism 3, slidercrank mechanism, guide shaft cover 5, bearing 6, shift fork 8, shift fork support 7, screw pair 9 and drive motor 10.
Particularly, drive motor 10 and screw pair 9 are fixed on the top position of generator 12, become oar slide way mechanism 3, guide shaft cover 5 on the wind driven generator principal shaft 11 between wheel hub 1 and the generator 12.Screw pair 9 includes output shaft 9-1, propeller shaft sleeve 9-2 and propeller shaft sleeve draw-in groove 9-3; Output shaft 9-1 wherein links to each other with drive motor 10; The rear portion of propeller shaft sleeve 9-2 have a tapped hole, the outside thread of said output shaft 9-1 matches with the tapped hole of propeller shaft sleeve 9-2, the cross section of the front portion of propeller shaft sleeve 9-2 is non-circular (like Fig. 2); And the cross section of the cross section of propeller shaft sleeve draw-in groove 9-3 and the front portion of propeller shaft sleeve 9-2 is suitable; Propeller shaft sleeve 9-2 passes the front portion propeller shaft sleeve draw-in groove 9-3, and when drive motor 10 work, output shaft 9-1 rotates under the driving of drive motor 10; Relative movement between the internal thread of the tapped hole of the outside thread of output shaft 9-1 and propeller shaft sleeve 9-2; Propeller shaft sleeve 9-2 is under the constraint of propeller shaft sleeve draw-in groove 9-3, and along axially seesawing of propeller shaft sleeve 9-2, the parallel to an axis of propeller shaft sleeve 9-2 is axial in wind driven generator principal shaft 11.The front end of propeller shaft sleeve 9-2 is provided with the first bearing pin 9-4 perpendicular to the axis of propeller shaft sleeve 9-2.See Fig. 1 and 4, shift fork supports 7 and is fixed on the framework of wind-driven generator or on other fixed structure, shift fork support 7 with the middle part of shift fork 8 between link to each other through two second bearing pin 7-1.Shift fork 8 is the integrative-structure that upper and lower U type support is formed, and each supporting leg of last U type support is a U type fork 8-1, and two U type fork 8-1 lay respectively at the left and right sides of propeller shaft sleeve 9-2, and the right ends of the first bearing pin 9-4 lays respectively in two U type fork 8-1; The middle part that the top of following U type support is shift fork 8 is used for supporting 7 pin joints through the second bearing pin 7-1 and shift fork; Two supporting legs of following U type support are distributed on the inboard of the left and right sides and each supporting leg of bearing 6 and are connected with draw-in groove 8-2, and block respectively on the front-end face and ear end face of bearing 6 outer ring 6-2 the both sides, front and back of draw-in groove 8-2.Promptly; Shift fork 8 can rotate around the second bearing pin 7-1; When the U type fork 8-1 of shift fork upper end moved under the drive of propeller shaft sleeve 9-2, corresponding motion was done in the shift fork lower end, and the draw-in groove 8-2 of pin joint drives the axial motion of bearing 6 along wind driven generator principal shaft 11 through bearing outer ring 6-2 on the shift fork lower end.
The inner ring 6-1 interference of bearing 6 is installed on the outer wall of guide shaft cover 5; Be connected through flat key between guide shaft cover 5 and the wind driven generator principal shaft 11; Keyway on flat key and the wind driven generator principal shaft 11 is isometric; The keyway length of guide shaft cover 5 is less than the keyway length of wind driven generator principal shaft 11, and the flat key interference is installed on the keyway of wind driven generator principal shaft 11, Spielpassung between the keyway of guide shaft cover 5 and the flat key; Make guide shaft cover 5 also can move axially when can rotate along wind driven generator principal shaft 11 with wind-driven generator main shaft 11; And the length of the keyway of wind driven generator principal shaft 11 is to be limited the axle sleeve ear end face of the wheel hub 1 of wind-driven generator and the shaft shoulder that is positioned at the wind driven generator principal shaft 11 in generator the place ahead, and the keyway length of this wind driven generator principal shaft 11 has determined the axial movement that guide shaft overlaps, to avoid the mechanism kinematic dead point.Side away from generator 12 of guide shaft cover 5 also is provided with flange 5-1 and is used for being fixedly connected with change oar slide way mechanism 3.It is thus clear that moving axially through interference fit drive guide shaft cover 5 of bearing 6 moved vertically, it is mobile vertically to drive change oar slide way mechanism 3 simultaneously.
Become oar slide way mechanism 3 and be hollow structure, through being fixedly connected with flange 5-1, can be with 11 rotations of wind-driven generator main shaft; Become the chute 3-1 that oar slide way mechanism 3 includes corresponding to the quantity of blade 4; All perpendicular to the axis of wind driven generator principal shaft 11, correspondingly, slidercrank mechanism includes the crank block 2 of equal number to the conduit of each chute 3-1; Crank block 2 includes slide block 2-1 and crank 2-2; Slide block 2-1 is installed in the chute 3-1, and the near-end of crank 2-2 is connected through bearing pin with slide block 2-1, and the far-end of crank 2-2 and sharf 4-1 are fixedly linked.It is thus clear that; When change oar slide-block mechanism 3 moves vertically; Each chute 3-1 is transformed into the rotation around sharf 4-1 through slide block 2-1 and crank 2-2 with moving axially of chute; Make blade 4 rotations, thereby realize the pitch mapping function, and can guarantee that the propeller pitch angle of each blade 4 in the pitch conversion process remains unanimity.
Generally, in, low power generator adopts 2-4 blade, the utility model is that representative describes with the situation of three blades.Corresponding to three blades 4; Slidercrank mechanism includes three crank blocks 2; Become oar slide way mechanism 3 and include three chute 3-1, each slide block 2-1 of three crank blocks 2 is installed in the chute 3-1 of a correspondence, and the far-end of each crank 2-2 and sharf 4-1 are fixedly linked.Three chute 3-1 of change oar slide way mechanism 3 are the center with the central axis of wind driven generator principal shaft 11; Formed the equilateral triangle structure of equally distributed hollow around the center; Make when crank 2-2 drives sharf 4-1 rotation; The angle of each sharf 4-1 rotation is identical, remains unanimity with the propeller pitch angle that guarantees each blade 4 in the pitch conversion process.Becoming under the situation of oar slide way mechanism 3 into equilateral triangle, the two ends of the conduit of each chute 3-1 are the zone that slide block 2-1 can not slide into, and have brought the not compact of mechanism; Like this, under the situation that guarantees three chute 3-1, shorten the length of each chute 3-1; And be fixed with connection strap between the chute 3-1 in twos; To form the hexagonal-shaped frame structure (be preferably integrative-structure, see Fig. 3) of hollow, guaranteeing to become under the prerequisite of oar slide way mechanism 3 realizations self function like this; Make more compact structure, quality littler, in more being applicable to, low power wind-driven generator.
Certainly, when blade is 2, expect easily, be provided with change oar slide way mechanism that comprises two chutes and the slidercrank mechanism that comprises two crank blocks; When blade is 4, expect easily, be provided with change oar slide way mechanism that comprises four chutes and the slidercrank mechanism that includes four crank blocks.
In addition, bearing 6 is preferably double-row angular contact bal bearing, and this bearing is bidirectional stress vertically.
The working procedure of this electrodeless pitch transformation system is following:
When needs are regulated pitch; Drive motor 10 work; Screw pair 9 converts drive motor 10 rotatablely moving of output to along screw pair 9 axis straight line motion; The U type fork 8-1 that the other end of screw pair drives the fork upper end rotates around the first bearing pin 9-4; The draw-in groove 8-2 of the lower end outer ring 6-2 that stirs bearing of fork moved and drove guide shaft cover 5 and become oar slide way mechanism 3 and move vertically along wind driven generator principal shaft 11 this moment, and each chute 3-1 converts moving axially of chute 3-1 to around sharf 4-1 rotation through slide block 2-1 and crank 2-2, and blade 4 rotates; Thereby realize the pitch mapping function, and can guarantee that the propeller pitch angle of each blade 4 in the pitch conversion process remains unanimity.

Claims (11)

1.一种中、小功率风力发电机的无级桨距变换系统，所述风力发电机包括叶片、风力发电机主轴和发电机，其特征在于，所述无级桨距变换系统包括有驱动电机、螺纹副、拔叉、拔叉支撑、导轴套、轴承、变桨滑槽机构和曲柄滑块机构，其中驱动电机与所述螺纹副的一端相连，所述螺纹副将驱动电机输出的旋转运动转换成沿螺纹副轴线的直线运动，所述螺纹副的轴线平行于所述风力发电机主轴的轴线，所述螺纹副的另一端与所述拔叉的上端通过垂直于所述螺纹副轴线的第一销轴相连，所述拔叉的下端与所述轴承的外圈相连，所述拔叉的中部与固定的拔叉支撑通过第二销轴相连，所述拔叉可绕所述第二销轴旋转，其中所述导轴套套接在风力发电机主轴上，且所述导轴套可随风力发电机主轴旋转并可沿风力发电机主轴轴向移动，所述轴承的内圈过盈安装在导轴套的外壁上，所述变桨滑块机构与所述导轴套固定连接，其中所述变桨滑块机构包括有以风力发电机主轴的中心轴线为中心而绕该中心均匀分布的对应于叶片数量的若干个滑槽，所述滑槽的槽道均垂直于风力发电机主轴的轴线，所述曲柄滑块机构包括有对应于叶片数量的若干个曲柄滑块，所述每个曲柄滑块包括有滑块和曲柄，所述滑块安装在滑槽内且可在滑槽内滑动，所述曲柄的近端与滑块通过销轴连接，所述曲柄的远端与叶片轴固定连接。1. A stepless pitch conversion system of medium and small power wind generators, said wind generator comprising blades, a wind generator main shaft and a generator, characterized in that said stepless pitch conversion system includes a drive Motor, thread pair, fork, fork support, guide shaft sleeve, bearing, pitch chute mechanism and crank slider mechanism, wherein the drive motor is connected to one end of the thread pair, and the thread pair will drive the output rotation of the motor The movement is converted into a linear motion along the axis of the secondary thread, the axis of the secondary thread is parallel to the axis of the main shaft of the wind turbine, and the other end of the secondary thread and the upper end of the fork pass perpendicular to the secondary axis of the thread The first pin shaft of the fork is connected, the lower end of the fork is connected with the outer ring of the bearing, the middle part of the fork is connected with the fixed fork support through the second pin shaft, and the fork can be wound around the first The two pin shafts rotate, wherein the guide sleeve is sleeved on the main shaft of the wind power generator, and the guide sleeve can rotate with the main shaft of the wind power generator and move axially along the main shaft of the wind power generator. The inner ring of the bearing The interference is installed on the outer wall of the guide shaft sleeve, and the pitch slider mechanism is fixedly connected with the guide shaft sleeve, wherein the pitch slider mechanism includes a There are several chutes uniformly distributed in the center corresponding to the number of blades, the channels of the chutes are all perpendicular to the axis of the main shaft of the wind turbine, and the slider crank mechanism includes a number of slider cranks corresponding to the number of blades, Described each crank slide block comprises slide block and crank, and described slide block is installed in the slide groove and can slide in slide groove, and the near end of described crank is connected with slide block by pin shaft, and the far end of described crank The end is fixedly connected with the blade shaft. 2.根据权利要求1所述的中、小功率风力发电机的无级桨距变换系统，其特征在于，所述驱动电机和螺纹副位于所述发电机的上方。2 . The stepless pitch conversion system for medium and small power wind power generators according to claim 1 , wherein the drive motor and the screw pair are located above the generator. 3 . 3.根据权利要求2所述的中、小功率风力发电机的无级桨距变换系统，其特征在于，所述螺纹副包括有带有外螺纹的输出轴、带有内螺纹的驱动轴套和固定的驱动轴套卡槽，所述输出轴与所述驱动电机相连且在所述驱动电机的驱动下旋转，所述驱动轴套后部的内螺纹与所述输出轴的外螺纹相配合，所述驱动轴套的前部穿过所述驱动轴套卡槽，所述驱动轴套前部的横截面为非圆形，所述驱动轴套卡槽的横截面与所述驱动轴套前部的横截面相适配使得驱动轴套在驱动轴套卡槽的约束下仅可沿螺纹副的轴向移动。3. The stepless pitch conversion system of medium and small power wind generators according to claim 2, characterized in that, the thread pair includes an output shaft with external threads, a drive bushing with internal threads and a fixed drive sleeve slot, the output shaft is connected to the drive motor and rotates under the drive of the drive motor, and the internal thread at the rear of the drive sleeve matches the external thread of the output shaft , the front part of the drive bushing passes through the slot of the driving bushing, the cross section of the front part of the driving bushing is non-circular, and the cross section of the slot of the driving bushing is the same as that of the driving bushing The cross-section of the front part is adapted so that the drive bush can only move axially along the thread pair under the constraints of the drive bush slot. 4.根据权利要求3所述的中、小功率风力发电机的无级桨距变换系统，其特征在于，所述拔叉的上端为一对U型叉，所述第一销轴的凸出驱动轴套的两端分别位于两个U型叉内，所述驱动轴套的轴向移动可通过第一销轴和一对U型叉带动拔叉的上端绕所述第二销轴旋转，进而拔叉的下端通过轴承外圈带动所述轴承和导轴套在沿风力发电机主轴的方向上产生位移。4. The stepless pitch conversion system for medium and small power wind turbines according to claim 3, wherein the upper ends of the forks are a pair of U-shaped forks, and the protrusions of the first pin shaft The two ends of the drive sleeve are respectively located in the two U-shaped forks, and the axial movement of the drive sleeve can drive the upper end of the fork to rotate around the second pin through the first pin shaft and a pair of U-shaped forks. Furthermore, the lower end of the fork drives the bearing and the guide shaft sleeve to generate displacement along the direction of the main shaft of the wind power generator through the outer ring of the bearing. 5.根据权利要求4所述的中、小功率风力发电机的无级桨距变换系统，其特征在于，所述拔叉的下端上销接有一对卡槽，所述一对卡槽分布在所述轴承的左右两侧，所述卡槽的前、后侧面分别卡住所述轴承外圈的前端面和后端面。5. The stepless pitch conversion system for medium and small power wind power generators according to claim 4, characterized in that, the lower end of the fork is pin-connected with a pair of draw-in slots, and the pair of draw-in slots are distributed in On the left and right sides of the bearing, the front and rear sides of the locking groove respectively clamp the front end surface and the rear end surface of the outer ring of the bearing. 6.根据权利要求1-5之一所述的中、小功率风力发电机的无级桨距变换系统，其特征在于，所述导轴套和所述风力发电机主轴之间通过平键连接，所述平键与所述风力发电机主轴上的键槽等长，且所述平键过盈安装在所述风力发电机主轴的键槽内，所述导轴套的键槽长度小于所述风力发电机主轴的键槽长度，且所述导轴套的键槽与所述平键间隙配合。6. The stepless pitch conversion system for medium and small power wind generators according to any one of claims 1-5, characterized in that the guide shaft sleeve and the main shaft of the wind generator are connected by a flat key , the flat key is as long as the keyway on the main shaft of the wind power generator, and the flat key is installed in the keyway of the main shaft of the wind power generator with interference, and the length of the keyway of the guide shaft sleeve is shorter than that of the wind power generator The length of the keyway of the machine main shaft, and the keyway of the guide shaft sleeve is matched with the flat key in clearance. 7.根据权利要求1-5之一所述的中、小功率风力发电机的无级桨距变换系统，其特征在于，所述风力发电机包括有三个叶片，所述变桨滑槽机构包括有三个滑槽，所述三个滑槽相连且呈正三角形框架结构；相应地，曲柄滑块机构包括有三个曲柄滑块。7. The stepless pitch conversion system for medium and small power wind generators according to any one of claims 1-5, wherein the wind generator includes three blades, and the pitch chute mechanism includes There are three slide slots, and the three slide slots are connected and form an equilateral triangle frame structure; correspondingly, the slider crank mechanism includes three slider cranks. 8.根据权利要求7所述的中、小功率风力发电机的无级桨距变换系统，其特征在于，所述三个滑槽两两之间设置有连接条，以形成一体的六边形框架结构的变桨滑槽机构。8. The stepless pitch conversion system for medium and small power wind turbines according to claim 7, characterized in that connecting bars are arranged between two of the three chutes to form an integrated hexagonal Pitch chute mechanism with frame structure. 9.根据权利要求8所述的中、小功率风力发电机的无级桨距变换系统，其特征在于，所述导轴套的靠近变桨滑槽机构的一侧上设置有凸缘，所述凸缘与所述连接条之间固定连接。9. The stepless pitch conversion system for medium and small power wind power generators according to claim 8, wherein a flange is provided on the side of the guide shaft sleeve close to the pitch chute mechanism, so that The flange is fixedly connected to the connecting bar. 10.根据权利要求1-5之一所述的中、小功率风力发电机的无级桨距变换系统，其特征在于，所述风力发电机包括有两个叶片，所述变桨滑槽机构包括有两个滑槽，相应地，所述曲柄滑块机构包括有两个曲柄滑块；或所述风力发电机包括有四个叶片，所述变桨滑槽机构包括有四个滑槽，相应地，所述曲柄滑块机构包括有四个曲柄滑块。10. The stepless pitch conversion system for medium and small power wind generators according to any one of claims 1-5, wherein the wind generator includes two blades, and the pitch chute mechanism It includes two chutes, and correspondingly, the slider crank mechanism includes two slider cranks; or the wind turbine includes four blades, and the pitch chute mechanism includes four chutes, Correspondingly, the slider crank mechanism includes four slider cranks. 11.根据权利要求1-5之一所述的中、小功率风力发电机的无级桨距变换系统，其特征在于，所述轴承为双列角接触球轴承。11. The stepless pitch conversion system for medium and small power wind turbines according to any one of claims 1-5, wherein the bearing is a double row angular contact ball bearing.
CN2011205513689U 2011-12-26 2011-12-26 Stepless propeller pitch conversion system of middle/small power wind-driven generator Withdrawn - After Issue CN202381256U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102562449A (en) * 2011-12-26 2012-07-11 中科恒源科技股份有限公司 Stepless blade pitch transformation system of medium and small power wind-driven generator
CN104314764A (en) * 2014-10-16 2015-01-28 张成革 Wind generating set

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102562449A (en) * 2011-12-26 2012-07-11 中科恒源科技股份有限公司 Stepless blade pitch transformation system of medium and small power wind-driven generator
CN104314764A (en) * 2014-10-16 2015-01-28 张成革 Wind generating set

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