CN201166092Y - Speed increasing gear box of wind power generation device - Google Patents

Abstract

The utility model discloses a gear case for wind power generators, comprising a body, a planet gear train, a transition gear transmission mechanism, an output gear shaft and a mechanical pump, wherein the output end of the output gear shaft penetrated through the back end of the body, the inner end of the output gear shaft is provided on the wall of the body, the end face of the inner end of the output gear shaft is provided with an inner hole whose inner circumference is provided with a spline way, the axle head of the transmission shaft of the mechanical pump is a spline axle head, the mechanical pump is provided at the outer side of the body and the spline axle head of its transmission shaft penetrated through the body and provided in the spline way inner hole on the end face of the inner end of the output gear shaft, the large gear, the large transition gear and the small transition gear on the transition gear shaft of the transition gear transmission mechanism and the small gear on the output gear shaft are herringbone gears. The gear case has low weight and high transmission efficiency and the case body is resistant to deformation.

Description

The step-up gear of wind generating unit

Technical field

The utility model relates to gear-box, particularly a kind of step-up gear of wind generating unit.

Background technique

The step-up gear of existing wind generating unit mainly comprises casing, planetary gear train, transition gear driving mechanism, output gear shaft and mechanical pump.Planetary gear train is made up of input planet carrier, sun gear, planet wheel and ring gear.The transition gear driving mechanism is made of gearwheel, splined shaft, great transition gear, transition gear axle.Gearwheel is connected by splined shaft with the end of planetary gear train sun gear, gearwheel is installed on the splined shaft, small offence on gearwheel and the transition gear axle is crossed gear engagement, the output terminal of output gear shaft passes the rear end of casing, the inner of output gear shaft is arranged on the tank wall of casing, small gear on the output gear shaft and the great transition gear engagement that is arranged on the transition gear axle.Mechanical pump is arranged on the casing outside, and the main effect of this pump provides lubricant oil, and the transmission part in the gear-box is lubricated, and the part of this pump drive shaft is positioned at the inside of casing, the gear engagement that gear that its spindle nose is provided with and sun gear end are provided with.Because the rotating speed of sun gear is lower, for reaching the required rotating speed of mechanical pump, therefore the gear size that is arranged on the sun gear end is bigger, and this has increased the weight of gear-box.Simultaneously owing to be arranged on gear that gear on the sun gear end and mechanical pump transmission shaft spindle nose be provided with all in casing, this is unfavorable for the maintenance of mechanical pump.Relatively poor for overcoming spur gear transmission stability in transmission process, be easy to generate bigger impact, vibrating noise, and the contact stress that reduces the flank of tooth, improve the bearing capacity of the gear teeth, transition gear driving mechanism in the step-up gear of existing wind generating unit and the large and small gear on the output gear shaft are helical gear.But, owing to helical gear flank of tooth Line of contact is and the uneven oblique line of axis, thereby when transmission, can produce an axial thrust load, the deformation effect transmission quality that this causes casing on the one hand influences transmission efficiency on the other hand.

The model utility content

The technical problems to be solved in the utility model provides a kind of step-up gear of wind generating unit, and it is not only in light weight, transmission efficiency is high, and casing is not yielding.

For solving the problems of the technologies described above, the step-up gear of the utility model wind generating unit, it contains casing, planetary gear train, the transition gear driving mechanism, output gear shaft and mechanical pump, the transition gear driving mechanism is by gearwheel, splined shaft, the great transition gear, the transition gear axle constitutes, the output terminal of output gear shaft passes the rear end of casing, the inner of output gear shaft is arranged on the tank wall of casing, the end face of the inner of output gear shaft is provided with endoporus, on the inner peripheral surface in this hole, be provided with spline, the spindle nose of mechanical pump transmission shaft is a spline axle head, the spline axle head that mechanical pump is arranged on its transmission shaft of the outside of casing passes casing and is installed in the spline endoporus that the end face of output gear shaft the inner is provided with the gearwheel of described transition gear driving mechanism, little transition gear on great transition gear and the transition gear axle and the small gear on the output gear shaft are herringbone gear.

Described mechanical pump is a plunger pump.

Owing on the end face of output gear shaft the inner, be provided with the spline endoporus, the spindle nose of mechanical pump transmission shaft is that spline axle head and this spindle nose are installed in the above-mentioned spline endoporus, and the rotating speed height of output gear shaft, satisfy the requirement of mechanical pump fully to rotating speed, therefore the gearwheel that is arranged on the sun gear end in the prior art and the gear on the mechanical pump transmission shaft spindle nose have been saved by such improvement, this not only makes the weight saving of gear-box, and makes the power input structure of mechanical pump become simple.Simultaneously because mechanical pump directly links with output gear shaft by spline axle head, so the mechanical pump maintenance conveniently; Because little transition gear on gearwheel, great transition gear and the transition gear axle of transition gear driving mechanism and the small gear on the output gear shaft are herringbone gear, and herringbone gear about two toothrows fully the symmetry, the axial thrust load that both sides are produced is cancelled each other, therefore casing can not deform, thereby ensured transmission quality, also improved transmission efficiency simultaneously.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the local enlarged diagram of Fig. 1.

1. input planet carrier, 2. sun gear, 3. casing, 4. ring gears among the figure, 5. great transition gear, 6. mechanical pump, 7. output terminal, 8. little transition gear, 9. transition gear axle, 10. splined shaft, 11. gearwheel, 12. bearings, 13. bearing pins, 14. planet wheel, 15. spline axle heads, 16. the inners, 17. endoporus, 18. output gear shafts, 19. small gears.

Embodiment

Among Fig. 1, the step-up gear of the utility model wind generating unit contains casing 3, planetary gear train, transition gear driving mechanism, output gear shaft 18 and mechanical pump 6.Planetary gear train is made up of input planet carrier 1, sun gear 2, planet wheel 14 and ring gear 4.Ring gear 4 is arranged on the interior front portion of casing 3, and star-wheel 14 is arranged on the bearing pin 13 of input planet carrier 1 periphery by bearing 12.Present embodiment is arranged on three uniform bearing pins 13 of input planet carrier 1 periphery by three bearings 13 respectively by three planet wheels 14.In the interior front portion of casing 3 and be positioned at ring gear 4, planet wheel 14 simultaneously and ring gear 4, sun gear 2 engagements by Bearing Installation for the front end, remaining part that the input end of input planet carrier 1 passes casing 3.The transition gear driving mechanism is arranged on the interior rear portion of casing 3, and the transition gear driving mechanism is made of gearwheel 11, splined shaft 10, great transition gear 5, transition gear axle 9.Gearwheel 11 is connected by splined shaft 10 with the end of planetary gear train sun gear 2, and gearwheel 11 is installed on the splined shaft 10, little transition gear 8 engagements on gearwheel 11 and the transition gear axle 9.The output terminal 7 of output gear shaft 18 passes the rear end of casing 3, and the inner 16 of output gear shaft 18 is arranged on the tank wall of casing 3.The end face of the inner 16 of output gear shaft 18 is provided with endoporus 17, is provided with spline on the inner peripheral surface in this hole.The spindle nose of the transmission shaft of mechanical pump 6 is a spline axle head 15, and the spline axle head 15 that mechanical pump 6 is arranged on its transmission shaft of the outside of casing 3 passes casing 3 and is installed in the spline endoporus 17 that the end face of output gear shaft 18 the inners 16 is provided with, as shown in Figure 2.Small gear 19 on the output gear shaft 18 and great transition gear 5 engagements that are arranged on the transition gear axle 9.For improving lubrication effect, mechanical pump 6 can be selected plunger pump for use.Because mechanical pump 6 is provided with in the spline endoporus 17 by the end face that spline axle head 15 directly is installed on the inner 16 of output gear shaft 18, and the rotating speed height of output gear shaft 18, satisfy the requirement of 6 pairs of rotating speeds of mechanical pump fully, therefore the gearwheel that is arranged on sun gear 2 ends in the prior art and the gear on the mechanical pump 6 transmission shaft spindle noses have been saved by such improvement, this not only makes the weight saving of gear-box, and the power input structure of mechanical pump 6 is become simply, be convenient to the maintenance of mechanical pump 6.Little transition gear 8 on the gearwheel 11 of transition gear driving mechanism, great transition gear 5 and the transition gear axle 9 and the small gear 19 on the output gear shaft 18 are herringbone gear.Because the axial thrust load that the complete symmetry of two toothrows produces both sides about herringbone gear is cancelled each other, this has eliminated fully, and helical gear produces the distortion that axial thrust load causes casing 3 in the prior art in transmission process, thereby ensured transmission quality, also improved transmission efficiency simultaneously.

Claims (2)

1. the step-up gear of a wind generating unit, it contains casing, planetary gear train, the transition gear driving mechanism, output gear shaft and mechanical pump, the output terminal of output gear shaft passes the rear end of casing, the inner of output gear shaft is arranged on the tank wall of casing, it is characterized in that: the end face of the inner of described output gear shaft is provided with endoporus, on the inner peripheral surface in this hole, be provided with spline, the spindle nose of described mechanical pump transmission shaft is a spline axle head, the spline axle head that mechanical pump is arranged on its transmission shaft of the outside of casing passes casing and is installed in the spline endoporus that the end face of output gear shaft the inner is provided with the gearwheel of described transition gear driving mechanism, little transition gear on great transition gear and the transition gear axle and the small gear on the output gear shaft are herringbone gear.

2. the step-up gear of wind generating unit according to claim 1, it is characterized in that: described mechanical pump is a plunger pump.

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