CN107781397A - wind power generation speed-increasing gearbox - Google Patents
wind power generation speed-increasing gearbox Download PDFInfo
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- CN107781397A CN107781397A CN201711187350.3A CN201711187350A CN107781397A CN 107781397 A CN107781397 A CN 107781397A CN 201711187350 A CN201711187350 A CN 201711187350A CN 107781397 A CN107781397 A CN 107781397A
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- 238000010248 power generation Methods 0.000 title claims abstract description 29
- 230000008878 coupling Effects 0.000 claims abstract description 54
- 238000010168 coupling process Methods 0.000 claims abstract description 54
- 238000005859 coupling reaction Methods 0.000 claims abstract description 54
- 238000007667 floating Methods 0.000 claims abstract description 41
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 230000005540 biological transmission Effects 0.000 abstract description 18
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000013461 design Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 230000005611 electricity Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000003967 crop rotation Methods 0.000 description 1
- 210000003464 cuspid Anatomy 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
- F16H57/082—Planet carriers
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wind Motors (AREA)
Abstract
The present invention provides a kind of wind power generation speed-increasing gearbox, including slow speed turbine stage planetary gear train, middling speed level planetary gear train and high speed level Cylinder Gear train, slow speed turbine stage planetary gear train is identical with the structure setting of middling speed level planetary gear train, slow speed turbine stage planet carrier input inputs driving torque and initial speed, two slow speed turbine stage planetary gears are provided with around slow speed turbine stage sun gear, one end of slow speed turbine stage end-float coupling external tooth and slow speed turbine stage sun gear floating connection, the other end and the tooth-like connection of middling speed level planet carrier input；One end of middling speed level end-float coupling external tooth and middling speed level sun gear floating connection, the other end are connected with the input shaft gear of high speed level Cylinder Gear train；Accelerating function of the high speed level Cylinder Gear train through high speed level gear wheel and high speed level little gear axle exports.The wind power generation speed-increasing gearbox of the present invention, which has, overcomes planetary gear train caused unbalance loading problem and to realize the beneficial effect for carrying transmission in planetary gear train drive mechanism in transmission process.
Description
Technical field
The present invention relates to generating gear-box field, and in particular to a kind of wind power generation speed-increasing gearbox.
Background technology
Due to compact-sized, small volume, the advantages that transmission efficiency and gearratio are big, Planetary Gear Transmission is extensive
Apply in fields such as wind-driven generator transmission system, aviation power transmission system, vehicle drive systems.Wind energy is to clean in the world
One of pollution-free and renewable important energy source, with energy shortage and the worsening of ecological environment, it is widely acknowledged that
The importance of new energy power generation technology.Gear-box is one of critical component of wind power plant, and the load that it bears is very multiple
It is miscellaneous, it is mainly used in step-up drive.Gear-box is one of wind power generating set fault rate highest part, in order to reduce gear-box
Fault rate, improve its working life and reliability, it is necessary to which the impact resistance of Planetary Gear Transmission is furtherd investigate.
The development of wind-powered electricity generation equipment technology is very rapid, such as variable speed constant frequency technology, variable-pitch variable-speed, total power Semiconductor Converting Technology, straight
Drive and semi-direct driving wind group of motors.Direct drive wind power unit is exempted from by the way of multipolar dynamo and impeller are directly connected to be driven
Gear-box is removed, share of installing in recent years constantly increases.But due to technology and cost etc., within the following long period
Wind turbines with step-up gear will be occupied an leading position in the market.Moreover, the knot of current wind power generation speed-increasing gearbox
Structure has a lot, and is designed mostly with reference to transmission power and speed increasing ratio, but for powerful wind-power electricity generation such as
Fruit planet carrier floats during rotation, causes larger torque, and then can seriously damage the use longevity of generating gear-box
Life and initiation gear-box break down.
Therefore, the wind-driven generator wheel-box that this area is evenly distributed there is an urgent need to develop a kind of power of making.
The content of the invention
It is an object of the present invention to provide a kind of wind power generation speed-increasing gearbox, planetary gear train can be overcome in transmission process
Caused unbalance loading problem and realized in planetary gear train drive mechanism carry transmission.
The present invention provides a kind of wind power generation speed-increasing gearbox, including slow speed turbine stage planetary gear train, middling speed level planetary gear train with
High speed level Cylinder Gear train, the slow speed turbine stage planetary gear train is identical with the structure setting of the middling speed level planetary gear train, wherein,
Load balancing mechanism in the slow speed turbine stage planetary gear train is slow speed turbine stage sun gear and the slow speed turbine stage with its floating connection
End-float coupling external tooth；Load balancing mechanism in the middling speed level planetary gear train be middling speed level sun gear and with its floating connection
Middling speed level end-float coupling external tooth；
Slow speed turbine stage planet carrier input inputs driving torque and initial speed, be provided with around slow speed turbine stage sun gear two it is low
Fast level planetary gear, one end of slow speed turbine stage end-float coupling external tooth and the slow speed turbine stage sun gear floating connection, the slow speed turbine stage float
The other end of dynamic shaft coupling external tooth and the tooth-like connection of middling speed level planet carrier input；
The middling speed level planetary gear train is second level planetary gear train, and the middling speed level planet carrier input is second level planet
The planet carrier input of train, is provided with two middling speed level planetary gears around middling speed level sun gear, outside middling speed level end-float coupling
One end of tooth and the middling speed level sun gear floating connection, the other end and the high speed of the middling speed level end-float coupling external tooth
The input shaft gear connection of level Cylinder Gear train；
High speed level input shaft is connected by two keys with high speed level gear wheel, finally by high speed level gear wheel and high speed level
The accelerating function output of pinion shaft, the high speed level little gear axle are symmetrical arranged relative to the high speed level gear wheel, produced
Power to be symmetrical.
Preferably, the cross sectional shape in the facewidth direction of the floating gear coupling uses spur type structure.
Preferably, the structure of the slow speed turbine stage planet carrier is using axle and planet carrier one both arms split planet carrier.
The wind power generation speed-increasing gearbox of the present invention has the advantages that compared with prior art：
1st, wind power generation speed-increasing gearbox of the invention adds one-level cylinder to shunt power train, its energy using gear for two stage planetary gear train
Enough overcome planetary gear train caused unbalance loading problem in transmission, i.e., the planetary gear transmission mechanism, which can be realized preferably, carries transmission.
2nd, the slow speed turbine stage planetary gear train in wind power generation speed-increasing gearbox of the invention uses phase with middling speed level planetary gear train
Isostructural setting, so that compact overall structure is reasonable, and caused power is symmetrical during wind-power electricity generation.
3rd, two sun gears are used as load-balancing device in wind power generation speed-increasing gearbox of the invention, although using the sun
Wheel-planet carrier relocatable form uses single sun gear more preferable as floating effect than simply, but this speed increaser is mainly
For wind-power electricity generation effect, and its driving torque is larger and the volume that causes planet carrier also to design is bigger, due to row
Carrier is planet carrier because the quality is relatively light and speed is slower as the condition floated, and will not thus produce larger turn
Square, for the above condition, therefore what is designed is to use sun gear as load balancing mechanism, therefore its relative and high-power wind
It is more reasonably for generating.
4th, the connection of the Planetary Gear Transmission in wind power generation speed-increasing gearbox of the invention uses floating gear coupling,
Load effect can so be realized.
Brief description of the drawings
Accompanying drawing used in this application is will be briefly described below, it should be apparent that, these accompanying drawings are only used for explaining the present invention
Design.
Fig. 1 is the sectional view of the wind power generation speed-increasing gearbox structure of the present invention；
Fig. 2 is the sectional view of single tooth type floating gear coupling；
Fig. 3 is the sectional view of twin tooth type floating gear coupling；
Fig. 4 is that the cross sectional shape in facewidth direction is the sectional view of the floating gear coupling of spur type；
Fig. 5 is the schematic cross-sectional view one of the floating gear coupling of tooth side centering mode；
Fig. 6 is the schematic cross-sectional view two of the floating gear coupling of tooth side centering mode；
Fig. 7 is the sectional view of both arms split planet carrier；
Fig. 8 is the sectional view of the both arms split planet carrier on A-A directions.
Reference collects：
1st, slow speed turbine stage planet carrier input 2, slow speed turbine stage sun gear
3rd, slow speed turbine stage planetary gear 4, slow speed turbine stage end-float coupling external tooth
5th, slow speed turbine stage planet carrier output end 6, slow speed turbine stage planet wheel spindle
7th, middling speed level planet wheel spindle 8, middling speed level planet carrier input
9th, middling speed level planetary gear 10, middling speed level planet carrier output end
11st, middling speed level sun gear 12, middling speed level end-float coupling external tooth
13rd, high speed level gear wheel 14, key
15th, high speed level little gear axle 16, support shaft
Embodiment
Hereinafter, the embodiment of the wind power generation speed-increasing gearbox of the present invention is described with reference to the accompanying drawings.
The embodiment recorded herein is specific embodiment of the invention, for illustrating the design of the present invention,
It is explanatory and exemplary, should not be construed as the limitation to embodiment of the present invention and the scope of the invention.Except what is recorded herein
Outside embodiment, those skilled in the art can also be based on the application claims and specification disclosure of that using aobvious and
The other technical schemes being clear to, these technical schemes include making the embodiment recorded herein it is any it is obvious replace and
The technical scheme of modification.
The accompanying drawing of this specification is schematic diagram, aid in illustrating the present invention design, it is schematically indicated each several part it is mutual
Relation.It note that for the ease of clearly showing the relation of each several part of the embodiment of the present invention.Same or analogous reference mark
Remember for representing same or analogous part.
Fig. 1 is the sectional view of the wind power generation speed-increasing gearbox structure of the present invention, as shown in figure 1, the present invention provides one kind
Wind power generation speed-increasing gearbox, including slow speed turbine stage planetary gear train, middling speed level planetary gear train and high speed level Cylinder Gear train, i.e. this hair
The system of bright wind power generation speed-increasing gearbox is to add one-level cylinder to shunt power train using gear for two stage planetary gear train.Wherein, low speed
Level planetary gear train is identical with the structure setting of middling speed level planetary gear train, and slow speed turbine stage sun gear 2 is with middling speed level sun gear 11 as equal
Carry and put.Compact-sized reasonable, the caused power of wind power generation speed-increasing gearbox so set is also symmetrical, so that
Load transmission can preferably be realized by obtaining planetary gear transmission mechanism.
Load balancing mechanism in slow speed turbine stage planetary gear train is slow speed turbine stage sun gear 2 and floated with the slow speed turbine stage of its floating connection
Shaft coupling external tooth 4；Load balancing mechanism in middling speed level planetary gear train is middling speed level sun gear 11 and the middling speed with its floating connection
Level end-float coupling external tooth 12.
Above-mentioned slow speed turbine stage planet carrier input 1 inputs driving torque and initial speed, is provided with around slow speed turbine stage sun gear 2
Two slow speed turbine stage planetary gears 3, slow speed turbine stage planet carrier output end 5 are connected with slow speed turbine stage planetary gear 3, slow speed turbine stage end-float coupling external tooth
4 one end and the floating connection of slow speed turbine stage sun gear 2, the other end and middling speed level planet carrier of slow speed turbine stage end-float coupling external tooth 4 are defeated
Enter 8 tooth-like connections of end, i.e. one end of slow speed turbine stage end-float coupling external tooth 4 and the 8 tooth-like connection of middling speed level planet carrier input is low
Fast level planetary gear train output end, realize that the first order accelerates in slow speed turbine stage planetary gear train.
Above-mentioned middling speed level planetary gear train is second level planetary gear train, and middling speed level planet carrier input 8 is second level planetary gear
The planet carrier input of system, two middling speed level planetary gears 9, middling speed level planet carrier output end are provided with around middling speed level sun gear 11
10 are connected with middling speed level planetary gear 9, one end and the floating connection of middling speed level sun gear 11 of middling speed level end-float coupling external tooth 12, in
The other end of fast level end-float coupling external tooth 12 is connected with the input shaft gear of high speed level Cylinder Gear train, in middling speed level planetary gear
Realize that the second level accelerates in system.
Above-mentioned high speed level input shaft 20 is connected by two keys 14 with high speed level gear wheel 13, finally by high speed level canine tooth
The accelerating function of wheel 13 and high speed level little gear axle 15 exports, and output meets certain rotating speed requirement.High speed level little gear axle 15
It is symmetrical arranged relative to high speed level gear wheel 13, caused power is symmetrical.
It should be noted that above-mentioned slow speed turbine stage end-float coupling external tooth 4 and middling speed level end-float coupling external tooth 12 is main
It is floating connection that effect, which acts as the effect of connection and its sun gear with planetary gear train, and such sun gear just potentially acts as
Load acts on.
In addition, the slow speed turbine stage planetary gear train load balancing mechanism of the wind power generation speed-increasing gearbox of the present invention is slow speed turbine stage sun gear
2 with the floating connection of slow speed turbine stage end-float coupling external tooth 4, the other end of the part of slow speed turbine stage end-float coupling external tooth 4 and middling speed level row
The 8 tooth-like connection of carrier input.Because middling speed level cage portion is provided with bearing, therefore middling speed level planet carrier importation will not
Floating is produced, wherein middling speed level planetary gear 9 is that load balancing mechanism is that middling speed level sun gear 11 floats with middling speed level floating shaft joint external tooth
Dynamic connection, floating action is reached with this.Due to having used two sun crop rotations in the wind power generation speed-increasing gearbox of the present invention
For load-balancing device, although using sun gear-planet carrier relocatable form than simply use single sun gear as floating more preferably,
But this speed increaser is primarily used for wind-power electricity generation effect, and its driving torque is larger and cause planet carrier also to design
Volume it is bigger, due to being planet carrier using planet carrier as the condition floated because the quality is relatively light and speed is slower, this
Sample would not produce larger torque, for the above condition, therefore devise sun gear as load balancing structure, and it is relative
It is more reasonable for high-power wind power generation.In addition, two pinion shafts have been used as being arranged symmetrically in output end, this
Sample just allows the distribution of power more reasonable.
In further embodiment of the present invention, the connection of Planetary Gear Transmission uses floating gear coupling, is come with this
Reach the purpose of load effect.Floating gear coupling has the structure of monodentate and bidentate.Fig. 2 is single tooth type floating gear coupling
Sectional view, as shown in Fig. 2 single tooth type shaft coupling needs enough length Lg.Fig. 3 is twin tooth type floating gear coupling
Sectional view, as shown in figure 3, twin tooth type shaft coupling is relative to the more complicated of monodentate, but the gear of floating can be allowed to possess inclination
Moved with radial translation, this can reduces Kβ, therefore in order to reduce KβThe floating gear coupling of the present invention is joined using twin tooth type
Axle device.
The cross sectional shape in the facewidth direction of above-mentioned floating gear coupling has two kinds of straight-tooth and drum type tooth, its cross-sectional shapes
It is that processing is simple for the advantages of spur type structure, there can be less inclination angle, typically not more than 30 ', hold when operation
Gear teeth end stand under load is also easy to produce, tooth surface abrasion is big, and intensity and life-span ratio are relatively low.Wherein, cross sectional shape can for the structure of barreled tooth flank
To there is relatively large angle of inclination, it can typically reach 2 °, its gear teeth stand under load situation is good, float sensitive, intensity and life-span phase
Increased for straight-tooth.Fig. 4 is that the cross sectional shape in facewidth direction is the sectional view of the floating gear coupling of spur type, is such as schemed
Shown in 4, in order that the simple and compact for structure of wind power generation speed-increasing gearbox of the invention is obtained, it is reasonable in design, preferably from the facewidth
The cross sectional shape in direction is the floating gear coupling of spur type structure.
The centering mode of other shaft coupling also has diameter centering and tooth side centering two ways, and tooth side centering opposite outside diameter is determined
The benefit of the heart is having active certralizing ability, is advantageous to uniform between shaft coupling Transverse Load, and the present invention is using tooth side centering
Method.
Fig. 5 is the schematic cross-sectional view one of the floating gear coupling of tooth side centering mode, and Fig. 6 is the floating of tooth side centering mode
The schematic cross-sectional view two of dynamic gear coupling, as it can be seen in figures 5 and 6, the engagement of floating gear coupling is due to by structural condition
Limitation, do not use non-standard, its profile angle α generally0=20 °~30 °.Displacement and non-displacement can be used to engage,
The modification coefficient x1's and x2 of external gear and internal gear is equal in magnitude in the case of displacement, and direction is identical, can generally take x=0.3
~0.5.Its member and main geometric is calculated as follows：
Reference diameter：dg1=dg2=mz
Tip diameter：
Root diameter：
Flank profil average pressure angle：
In formula
Method due to using tooth side centering, so addendum coefficient and height of teeth root coefficient here is as follows：
The basic physical dimension parameter of slow-speed shaft and middling speed axle can be drawn according to above calculation formula, referring to such as following table
Lattice：
Common planet carrier structure form has three kinds of double-walled integral type, double-walled split and single wall formula forms.Fig. 7 is both arms
The sectional view of split planet carrier, Fig. 8 are the sectional views of the both arms split planet carrier on A-A directions, as shown in FIG. 7 and 8,
After this considers the reason such as assembling and processing, the structure shape of the slow speed turbine stage planet carrier in wind power generation speed-increasing gearbox of the invention
Formula is using axle and planet carrier one double-walled split planet carrier, material 40Cr identical with inputting big axle.The middling speed level row of the present invention
Carrier structure also uses split planet carrier, material 40Cr.
In further embodiment of the present invention, the bearing of slow speed turbine stage planet wheel spindle 6 uses self-aligning roller bearing, model
22338, its a diameter of d=190mm, length L=760mm.
In further embodiment of the present invention, a diameter of d=130mm of middling speed level planet wheel spindle 7, length L=
540mm, the bearing of use are self-aligning roller bearings, model 22326.Wherein, due to middling speed axle and middling speed level planet carrier conduct
One, and middling speed level planet carrier is connected with slow speed turbine stage shaft coupling, so considering to determine the size of middling speed level input shaft
Size.The input speed of middling speed axle in the present invention is 69r/min, output speed 372r/min.Wherein middling speed axle and low speed
The planetary sun gear of level is connected for end-float coupling, and middling speed axle and planet carrier are integrated, therefore middling speed axle only has
Bearing and positioning shaft shoulder two parts, it is contemplated that the problem of installation of bearing is with being connected shaft coupling, the diameter d1=of middling speed axle
460mm, length L1=56mm, a diameter of d2=490mm, the length L2=20mm of positioning shaft shoulder, it is contemplated that afterbody floats
Formula shaft coupling is connected with the power transmission shaft of high speed level, and high speed level needs to install bearing, so middling speed level output end is just not
Bearing is installed again, the bearing designation of wherein middling speed level input installation is 61892.
In further embodiment of the present invention, because high speed level input is connected with middling speed level shaft coupling, and
Also axle is set to be connected with gear wheel by key 14, it may be determined that its one section of diameter D=280mm, length L=related to bearing
135mm, the positioning of its bearing are to lean on positioning shaft shoulder and the positioning of gear wheel bossing of axle itself, the diameter of the positioning shaft shoulder of axle
D2=302mm, long L2=20mm, it is the axle bearing mount portion position of support shaft 16, the bearing designation of high speed level input is NJ1056.
The embodiment of the wind power generation speed-increasing gearbox of the present invention is illustrated above.For the wind-force of the present invention
The specific features of generating step-up gear can carry out specific design according to the effect of the feature of above-mentioned disclosure, and these designs are
What those skilled in the art can realize.Moreover, each technical characteristic of above-mentioned disclosure is not limited to disclosed and further feature
Combination, those skilled in the art can also carry out other combinations between each technical characteristic according to the purpose of the present invention, to realize
The purpose of the present invention is defined.
Claims (3)
1. a kind of wind power generation speed-increasing gearbox, it is characterised in that including slow speed turbine stage planetary gear train, middling speed level planetary gear train and height
Fast level Cylinder Gear train, the slow speed turbine stage planetary gear train is identical with the structure setting of the middling speed level planetary gear train, wherein,
Load balancing mechanism in the slow speed turbine stage planetary gear train is slow speed turbine stage sun gear and floated with the slow speed turbine stage of its floating connection
Shaft coupling external tooth；Load balancing mechanism in the middling speed level planetary gear train is middling speed level sun gear and the middling speed with its floating connection
Level end-float coupling external tooth；
Slow speed turbine stage planet carrier input inputs driving torque and initial speed, and two slow speed turbine stages are provided with around slow speed turbine stage sun gear
Planetary gear, one end of slow speed turbine stage end-float coupling external tooth and the slow speed turbine stage sun gear floating connection, the slow speed turbine stage, which floats, to be joined
The other end of axle device external tooth and the tooth-like connection of middling speed level planet carrier input；
The middling speed level planetary gear train is second level planetary gear train, and the middling speed level planet carrier input is second level planetary gear train
Planet carrier input, be provided with two middling speed level planetary gears around middling speed level sun gear, middling speed level end-float coupling external tooth
One end and the middling speed level sun gear floating connection, the other end and the high speed level of the middling speed level end-float coupling external tooth are justified
The input shaft gear connection of stud wheel system；
High speed level input shaft is connected by two keys with high speed level gear wheel, finally by high speed level gear wheel and the small tooth of high speed level
The accelerating function output of wheel shaft, the high speed level little gear axle are symmetrical arranged relative to the high speed level gear wheel, caused power
To be symmetrical.
2. wind power generation speed-increasing gearbox according to claim 1, it is characterised in that the tooth of the floating gear coupling
The cross sectional shape of cross direction uses spur type structure.
3. wind power generation speed-increasing gearbox according to claim 1, it is characterised in that the structure of the slow speed turbine stage planet carrier
Using axle and planet carrier one both arms split planet carrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711187350.3A CN107781397B (en) | 2017-11-24 | 2017-11-24 | Wind power generation speed increasing gear box |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711187350.3A CN107781397B (en) | 2017-11-24 | 2017-11-24 | Wind power generation speed increasing gear box |
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| CN107781397A true CN107781397A (en) | 2018-03-09 |
| CN107781397B CN107781397B (en) | 2023-11-28 |
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| CN107781397B (en) | 2023-11-28 |
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