Transmission in particular for wind power generators
A transmission in particular for wind power generators, with an epicyclic planetary gear arrangement having a sun gear, a ring gear, multiple planet gears and a planet carrier. The planet gears have planet gear teeth in mesh with sun gear teeth and ring gear teeth. Each planet gear is rotatably mounted via a radial slide bearing on a planet pin that is non-rotatably connected to the planet carrier. Each slide bearing includes a bearing hub positioned between the planet pin and the planet gear, which is non-rotatably connected to the planet pin. Between the bearing hub and the planet pin an annular support is formed, which seen in the axial direction has a smaller dimension than the bearing hub and/or a smaller dimension than the planet gear teeth of the planet gear.
1. A transmission for wind power generators, comprising:
an epicyclic planetary gear arrangement having:
a sun gear with sun gear teeth;
a ring gear with ring gear teeth;
multiple planet gears having planet gear teeth that are in mesh with the sun gear teeth and the ring gear teeth; and
a planet carrier;
a plurality of radial slide bearings, each radial slide bearing comprising a bearing hub positioned between a respective planet pin and a respective planet gear and non-rotatably connected to the respective planet pin,
wherein each planet gear is rotatably mounted via a respective radial slide bearing on a planet pin that is non-rotatably connected to the planet carrier, and
an annular support formed between a respective bearing hub and the respective planet pin, which seen in an axial direction, has a smaller dimension that the respective bearing hub and/or a smaller dimension than the planet gear teeth of the respective planet gear forming a radially extending gap between each axial end of the respective annular support and the respective planet pin,
wherein the respective bearing hub is configured to be elastically deformed in a radial direction in those regions in which the annular support is not formed.
2. The transmission according to claim 1 , wherein the annular support based on an axial dimension of the respective bearing hub and/or of the planet gear teeth of the respective gear is formed off center.
3. The transmission according to claim 2 , wherein the annular support is formed by a protrusion of the respective bearing hub circulating in a circumferential direction, which supports itself on the respective planet pin.
4. The transmission according to claim 2 , wherein the annular support is formed by a protrusion of the respective planet pin circulating in a circumferential direction, which supports itself on the respective bearing hub.
5. The transmission according to claim 1 , further comprising:
a floating bush is rotationally moveable relative to the respective bearing hub and the respective planet gear and is positioned between the respective bearing hub and the respective planet gear.
6. The transmission according to any one of the claim 1 , further comprising:
a slide bearing bush is non-rotatably connected either to the respective bearing hub or to the respective planet gear and is positioned between the respective bearing hub and the respective planet gear.
7. The transmission according to claim 1 , wherein at least one recess extending in an axial direction is introduced in the respective planet pin.
8. The transmission according to claim 7 , wherein an oil supply of the respective radial slide bearing is effected via the respective recess.
9. The transmission according to claim 1 , further comprising axial bearings for axially mounting the respective planet gear on the respective bearing hub.