Transmission, especially for wind power installations
First Claim
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1. A transmission, in particular for wind power installations, comprising:
- a transmission case, an input shaft and an output shaft supported in the transmission case, an input-side planetary stage disposed between the input shaft and the output shaft and having at least two power-splitting planetary gears of equal dimensions and being connected in parallel, the planetary stage further comprising two sun shafts; and
at least one passive differential gear stage implemented as a differential planetary gear and connected downstream of the planetary stage, said at least one differential gear stage including a sun wheel, a hollow wheel and a planet carrier, wherein one of the two sun shafts is operatively connected with the sun wheel of the differential gear stage and the other of the two sun shafts is operatively connected with the hollow wheel of the differential gear stage, and wherein the planet carrier of the differential gear stage forms an output section operatively connected to the output shaft.
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Abstract
A transmission, especially for wind power installations includes a planetary stage on the input side that is mounted upstream of at least one gear stage. The planetary stage includes at least two power-splitting planetary gears that are mounted in parallel. A differential gear that is mounted downstream of the power-splitting planetary gears compensates for an unequal load distribution between the individual planetary gears caused by their parallel disposition.
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Citations
22 Claims
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1. A transmission, in particular for wind power installations, comprising:
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a transmission case, an input shaft and an output shaft supported in the transmission case, an input-side planetary stage disposed between the input shaft and the output shaft and having at least two power-splitting planetary gears of equal dimensions and being connected in parallel, the planetary stage further comprising two sun shafts; and
at least one passive differential gear stage implemented as a differential planetary gear and connected downstream of the planetary stage, said at least one differential gear stage including a sun wheel, a hollow wheel and a planet carrier, wherein one of the two sun shafts is operatively connected with the sun wheel of the differential gear stage and the other of the two sun shafts is operatively connected with the hollow wheel of the differential gear stage, and wherein the planet carrier of the differential gear stage forms an output section operatively connected to the output shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A transmission, in particular for wind power installations, comprising:
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a transmission case;
an input shaft and an output shaft supported in the transmission case;
an input-side planetary stage disposed between the input shaft and the output shaft and having at least two power-splitting planetary gears of equal dimensions and being connected in parallel, the planetary stage further comprising two sun shafts; and
at least one active differential gear stage having a sun wheel and implemented as a differential planetary gear which, on one hand, splits the power equally between the two sun shafts connected to the differential gear stage and, on the other hand, contributes to an overall gear ratio of the transmission through an asymmetric connection of the planetary stage, whereby the sun wheel forms an output section operatively connected to the output shaft. - View Dependent Claims (11, 12, 13, 14)
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15. A transmission, in particular for wind power installations, comprising:
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a transmission case;
an input shaft and an output shaft supported in the transmission case;
an input-side planetary stage disposed between the input shaft and the output shaft and having at least two power-splitting planetary gears of equal dimensions and being connected in parallel, the planetary stage further comprising two sun shafts; and
at least one active differential gear stage implemented as a differential spur gear pair with opposing helical gears that is softly supported in the axial direction, the differential spur gear pair further including two differential spur wheels, wherein the differential spur gear pair splits the load equally between the two connected sun shafts and contributes to a total gear ratio of the transmission, and wherein one of the two sun shafts is operatively connected with one of the differential spur wheels and the other sun shaft is operatively connected with the other differential spur wheel. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A transmission in particular for wind power installations comprising:
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a transmission case;
an input shaft and an output shaft supported in the transmission case;
an input-side planetary stage disposed between the input shaft and the output shaft and having at least two power-splitting planetary gears of equal dimensions and being connected in parallel, at least one active differential gear stage connected downstream of the power-splitting planetary gears for equalizing an uneven load distribution between each of the parallel connected power-splitting planetary gears.
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Specification