Epicyclic Gear with 2 row of planet gear
Epicyclic Gear with 2 row of planet gear
(OP)
How can I control a misalignment when designing a shaft-system with 3set of double-row planet gear?
Input gear : planetary carrier
Output gear: sun gear
side view)
+---p p
l -----
input->--l SUN------>output
l -----
+---p p
Input gear : planetary carrier
Output gear: sun gear
side view)
+---p p
l -----
input->--l SUN------>output
l -----
+---p p





RE: Epicyclic Gear with 2 row of planet gear
Russell Giuliano
RE: Epicyclic Gear with 2 row of planet gear
What is pilot bearing?
And how can I apply it?
RE: Epicyclic Gear with 2 row of planet gear
Try to to use planet gear carrier on your planet gear that coupled to the sun gear, and use annulus(interanl gear that mate to your planet gear), I think these would help control the alignment.
You can vew the link: http://en.wikipedia.org/wiki/Epicyclic_gearing
Hope these helps. Thanks
RE: Epicyclic Gear with 2 row of planet gear
If miss-alignment is unavoidable and loads are not too high, consuder tooth crowning.
RE: Epicyclic Gear with 2 row of planet gear
RE: Epicyclic Gear with 2 row of planet gear
Actually I am designing gearbox for wind turbine.
And I intend to make 2-stage planetary and 1-helical gears.
1st planetarty stage takes very high torque so I thought double row planetary gear would be good.
But I didn't get "float" meaning. And How can I do that?
RE: Epicyclic Gear with 2 row of planet gear
In two stages of planetary gearing, if the carrier of one stage is radially positioned by the sun and ring gear, and in the next stage, if the sun gear is located by the planet gears, you need no radial restraint of the sun/carrier connecting shaft. That is what I meant by "float".
I have been getting a real itch to design a 20 kW wind turbine, and have started designing one. Maybe eng-tips needs a wind turbine forum.
RE: Epicyclic Gear with 2 row of planet gear
Timken also now offers a flexible pin design for mounting planet gears that addresses this issue, so that the planets load share nicely:
http://w
Good luck.