The wind-driven generator step-up gear
The utility model relates to gear-box, especially a kind of wind-driven generator step-up gear.
Wind-power electricity generation is compared with traditional thermal power generation, has the free of contamination advantage of generating, compares with hydroelectric power, have that the capital construction cost is low, floor space is little, maintaining is advantage easily, and especially large-scale hydroelectric power plant, storage reservoir also cause certain potential safety hazard to the downstream easily.
In wind-driven generator, gear-box is the critical component of wind-driven generator; China's megawatt-grade high-power wind-driven generator step-up gear development rapidly, 1.5 megawatt wind-driven generator gear-box generally adopts one-level planetary gear train+secondary parallel axes structure to carry out transmission of power, the present domestic wind energy turbine set generating of having produced in batches and be applied to of this type gear case.
Because wind-driven generator gear-box applying working condition is abominable, load condition is very complicated, and safeguard at the scene by often needing in the application process for gear-box; On powerful wind-driven generator step-up gear, the low temperature of the bearing capacity of lubricated and transition gear axle, output gear shaft and the spring bearing thereof of each bearing, gear-box weight, Environmental Conditions requires and is that we must consider and further perfect problem in aerial the maintaining easily property of height etc.
The model utility content
The purpose of this utility model is: at step-up gear, especially use the problem of bearing capacity of lubricated and transition gear axle, output gear shaft and the spring bearing thereof of each bearing that the more powerful occasion more than MW class need solve, gear-box weight issue, running environment require problem and gear-box to provide a kind of new wind-driven generator step-up gear in the aerial problems such as property easy to maintenance of height to the low temperature of gear-box.
For realizing above technical purpose, the utility model will be taked following technological scheme:
A kind of wind-driven generator step-up gear comprises casing, tubular axis, line of input star wheel series, output gear train and lubrication system, and casing comprises toggle, upper box and lower box; The line of input star wheel series comprises input planet carrier, sun gear, planet wheel, planet wheel shaft, ring gear; The output gear train comprises gearwheel, transition gear axle, output gear shaft, and gearwheel is fixedlyed connected with a female splined shaft; Lubrication system comprises oil leab, oil pump gear, oil pump gear axle, mechanical pump and oil circuit distributor; The ring gear of line of input star wheel series is between toggle, lower box, and the female splined shaft floating bushing of sun gear, gearwheel is connected on the tubular axis, sun gear output end and female splined shaft engagement; One end of tubular axis by flange with the input planet carrier be connected, the other end by bearings in lower box; Input planet carrier one end pass toggle and by bearings in toggle, the other end by bearings in lower box; The female splined shaft of the transition gear axle of output gear train, output gear shaft, gearwheel is arranged in parallel, their two ends are all by the connecting part of bearings between upper box and lower box, the gear in the transition gear axle respectively with gearwheel, output gear shaft in gear engagement; The axle of output gear shaft passes casing; Oil pump gear is fixedly mounted on the female splined shaft end, and with the oil pump gear axle in gear engagement, the oil pump gear axle is connected with the input shaft of mechanical pump is coaxial; Be provided with the oil leab that leads to each spring bearing mounting points respectively in casing, input planet carrier and the planet wheel shaft, the mechanical pump output terminal connects by oil circuit distributor and each oil leab; The input planet carrier and the connecting part of toggle and the connecting part of output gear shaft and casing are equipped with seal arrangement.
Lubrication system also comprises motor-drive pump, and motor-drive pump and mechanical pump are connected in parallel, and motor-drive pump all is connected with same oil circuit distributor with mechanical delivery side of pump, and the fuel sucking pipe of described mechanical pump is positioned at gear-box inside.
With the sun gear output end after female splined shaft docks snap ring is installed.
Lower box corresponding to female splined shaft is provided with lid, and mechanical pump fixedly places in the lid, and the mounting point of mechanical pump is in below the gear case oil bit line.
An end of each root axle supports by the pairing tapered roller bearing all respectively in female splined shaft, transition gear axle and the output gear shaft.
Output gear shaft is by pairing circular cone tapered roller bearing support face-to-face.
Planet wheel is installed on the planet wheel shaft by cylindrical roller bearing, and the two ends of input planet carrier adopt full-complement cylinder roller bearing to be supported on toggle and the lower box all respectively.
Seal arrangement comprises flinger ring, disc and dust ring.
The input planet carrier is distributed with three planet wheel shafts at least in the annular array mode.
According to above technological scheme, can realize following beneficial effect:
1, casing is divided into lower box and upper box, toggle links to each other with lower box by line of input star wheel series ring gear; Female splined shaft and output gear shaft are installed in the connecting part of upper box and lower box respectively, be to sever from transition gear axle and the punishment of output gear shaft line between upper box and the lower box, and it is both are continuous with bolt, therefore, the gear-box dismounting is convenient, is convenient to change in the engine rooms of wind power generators in tens meters high-altitudes transition gear axle, output gear shaft and spring bearing thereof;
2, gear-box is provided with independently mechanical pump, especially is provided with the motor-drive pump in parallel with mechanical pump, and when guaranteeing that gear-box is in any rotation situation, lubrication system can both proper functioning;
3, mechanical pump is installed in below the gear case oil bit line, has avoided " inhaling empty " phenomenon;
4, the mechanical pump fuel sucking pipe places gear-box inside, when effectively having prevented under low temperature environment, to move, and the situation that fuel sucking pipe is frozen in;
5, the axially locating of sun gear and female splined shaft adopts snap ring, has shortened sun gear length, has alleviated the gear-box gross weight;
6, female splined shaft, transition gear axle and output gear shaft one side adopt the pairing tapered roller bearing, especially output gear shaft adopts pairing tapered roller bearing face-to-face, increased the rigidity of each system, the distortion when having reduced gear engagement has improved the service life of gear-box;
7, the line of input star wheel series adopts at least three planet wheels, has increased bearing capacity; Planet wheel adopts two cylindrical roller bearings to support simultaneously, and after adopting full-complement cylinder roller bearing to install on the planet carrier, has both increased bearing capacity, has reduced installing space again;
8, by oil leab to each bearing, especially the bearing of planet wheel is implemented pressure lubrication, has improved the reliability of gear-box greatly, has prolonged the working life of gear-box.
9, between planet carrier and tubular axis, adopt flange to connect; Adopt the sealing of O type circle between planet carrier and flange and flange and the tubular axis; Adopt the pressing plate location on the tubular axis, make the dismounting of tubular axis become convenient.
Description of drawings
Fig. 1 is a kind of embodiment's of relating to of the utility model a structural representation;
Fig. 2 is the profile schematic representation of Fig. 1;
Wherein, toggle 1 ring gear 2 lower boxes 3 upper boxes 4 output gear shafts 5 transition gearwheels 6 transition gear axles 7 female splined shafts 8 gearwheels 9 mechanical pumps 10 sun gears 11 planet wheels 12 planet wheel shafts 13 bearings 14 motor-drive pumps 15 input planet carriers 16 tubular axis 17 flanges 18 pressing plates 19 seal arrangements 20 oil pump gears 21 oil pump gear axles 22 saturating lid 23 snap rings 24 mechanical pump fuel sucking pipes 25.
Accompanying drawing is nonrestrictive to disclose the structural representation of the specific embodiment that the utility model relates to, and the utility model will be further described below in conjunction with accompanying drawing.
As illustrated in fig. 1 and 2, wind-driven generator step-up gear described in the utility model comprises toggle 1, casing, tubular axis 17, line of input star wheel series, transition gear pair, output gear wheel set and lubrication system, wherein,
Described casing, comprise the upper box 4 and the lower box 3 that link into an integrated entity by threaded fastener, and the cutting lines of upper box 4 and lower box 3 coincides with the line in transition gear axle 7 and output gear shaft 5 both axle center, then the output gear wheel set is installed in the upper box 4, oil pump output gear wheel set in transition gear pair and the lubrication system then is installed in the lower box 3, and lower box 3 is equipped with and covers 23 in addition.
Described line of input star wheel series, be installed between toggle 1 and the lower box 3, comprise input planet carrier 16, sun gear 11, planet wheel 12, planet wheel shaft 13 and ring gear 2, toggle 1, input planet carrier 16, tubular axis 17 and sun gear 11 are coaxially set, input planet carrier 16 passes through flange 18 location and installation in tubular axis 17 1 ends, tubular axis 17 the other ends then pass through bearing 14 positioning supports in casing, and the input end of this input planet carrier 16 passes toggle 1 and places, import planet carrier 16 simultaneously and pass through full-complement cylinder roller bearing 14 location and installation between toggle 1 and lower box 3, other imports planet carrier 16 and with toggle 1 junction seal arrangement 20 is installed, seal arrangement 20 comprises flinger ring, disc and dust ring, described sun gear 11 floating bushings are connected on the tubular axis 17, sun gear 11 output ends are meshed with female splined shaft 8, and the end after sun gear 11 and female splined shaft 8 butt joints is equipped with snap ring 24, to carry out both axially locating, be connected with gearwheel 9 on the female splined shaft 8, and female splined shaft 8 be arranged in parallel with tubular axis 17, an end of female splined shaft 8 supports by pairing tapered roller bearing 14 simultaneously, 2 of ring gears are fixedly mounted between toggle 1 and the lower box 3 by threaded fastener, input planet carrier 16 is distributed with three planet wheel shafts 13 at least in the annular array mode, be equipped with a planet wheel 12 on each planet wheel shaft 13, and planet wheel 12 is installed on the planet wheel shaft 13 by cylindrical roller bearing 14.
Described transition gear pair, comprise transition gear axle 7 and cooperate the transition gearwheel 96 that is installed on the transition gear axle 7, transition gear axle 7 one ends are provided with the gear that is meshed with gearwheel 9, these transition gear axle 7 the other ends then are connected with transition gearwheel 96, and transition gear axle 7 and tubular axis 17 be arranged in parallel, and an end of transition gear axle 7 supports by pairing tapered roller bearing 14 simultaneously.
Described output gear wheel set, comprise the output gear shaft 5 that be arranged in parallel with tubular axis 17, the gear of these output gear shaft 5 one end settings is meshed with transition gearwheel 96, the other end then passes casing and places, and output gear shaft 5 is installed seal arrangement 20 with the casing junction, and output gear shaft 5 is supported in the casing by face-to-face pairing tapered roller bearing 14 in addition.
Described lubrication system, comprise oil pump gear 21, the oil pump gear axle 22 that is meshed with oil pump gear 21, mechanical pump 10, motor-drive pump 15 and oil circuit distributor, oil pump gear 21 is fixedly mounted on female splined shaft 8 ends, oil pump gear axle 22 then is connected by coupling with mechanical pump 10 input shafts, be that mechanical pump 10 is driven by oil pump gear axle 22, casing in addition, be respectively equipped with on input planet carrier 16 and the planet wheel shaft 13 and lead to the oil leab of corresponding spring bearing 14 mounting points separately, this motor-drive pump 15 is connected in parallel with mechanical pump 10, and both work alone, the output terminal of motor-drive pump 15 and mechanical pump 10 all is connected with each oil leab through same oil circuit distributor, mechanical pump 10 fixedly places and covers in 23, and the mounting point of mechanical pump 10 is in below the gear case oil bit line, and the fuel sucking pipe of described mechanical pump 10 is by being bolted to gear-box inside in addition.
In the utility model, the speed ratio of planetary stage train is 5～6, and gearwheel 9 is 4～5 with the speed ratio of transition gear axle 7 middle gears, and transition gearwheel 96 is 3～4 with the speed ratio of output gear shaft 5 middle gears.
During actual the use, the kinetic energy that wind-force forms is by 16 inputs of input planet carrier, planet wheel 12 is rotated around sun gear 11, because planet wheel 12 meshes with ring gear 2, sun gear 11 simultaneously, make sun gear 11 produce rotation, and drive female splined shaft 8 and gearwheel 9 rotates synchronously, drive output gear shafts 5 high speed rotating by transition gear axle 7, transition gearwheel 96 then, at last by output gear shaft 5 drive generator for electricity generation.
In the work, the lubricant oil in the lubricating oil tank is under the acting in conjunction of mechanical pump 10 and motor-drive pump 15, and the utilization fuel sucking pipe is transported to each oil leab from lower box 3 inner oil suctions by the oil circuit distributor, for all bearings 14 and gear provide lubricant oil; When wind-driven generator dallied, electric-motor pump stopped, and mechanical pump 10 can continue to keep the lubrication system proper functioning, for all bearings 14 and gear provide lubricant oil, had improved the gear-box functional reliability.