Planet carrier of the cage type

Abstract

Planet carrier of an epicyclic gear system with planetary shafts which are connected fixedly to the planet carrier onto which planet wheels are mounted rotatably using planetary bearings, the teeth of the planetary wheels being helical or chevron teeth, the planet carrier being of a cage type, and where at least two separate planetary wheels are placed on each planetary shaft, each wheel of which being supported by at least one double-row cylindrical bearing, where the outer bearing ring of each double-row cylindrical bearing is integrated into the planetary wheel concerned.

1 . Planet carrier ( 18 ) of an epicyclic gear system ( 20 ), equipped with planetary shafts ( 8 ) which are connected fixedly to the planet carrier ( 18 ), onto which planetary wheels are mounted rotatably using planetary bearings, the teeth of the planetary wheels being helical or chevron teeth, the said planet carrier being of a cage type, and where more specifically the planet wheels ( 6 ) are placed between two walls ( 11 ,  12 ) of the planet carrier ( 2 ), and where these walls ( 11 ,  12 ) support the planetary shafts ( 8 ) on either side of the planetary wheels ( 11 ,  12 ), characterised in that at least two planetary wheels ( 6 ) are placed on each planetary shaft ( 8 ), each of which being supported by at least one planetary bearing ( 7 ), where each planetary wheel ( 6 ) is supported by a planetary bearing ( 7 ), being a double-row cylindrical bearing, where the outer bearing ring ( 15 ) of each double-row cylindrical bearing ( 7 ) integrated in the planetary wheel ( 6 ) concerning. 
   
   
       2 . Planet carrier ( 18 ) according to  claim 1 , characterised in that the inner bearing rings ( 17 ) of the planetary bearings ( 7 ) of each planetary shaft ( 8 ) are in direct contact with each other. 
   
   
       3 . Planet carrier ( 18 ) according to  claim 1 , characterised in that the inner bearing rings ( 17 ) of the planetary bearings ( 7 ) of each planetary shaft ( 8 ) are in contact with each other through one or more spacer bushes. 
   
   
       4 . Planet carrier ( 18 ) according to  claim 1 , characterised in that the inner bearing rings ( 17 ) of the planetary bearings ( 7 ) of each planetary shaft ( 8 ) are axially enclosed between a collar on the planetary shaft ( 8 ) on the one end and a wall ( 11 ,  12 ) of the planet carrier ( 18 ) on the other end. 
   
   
       5 . Planet carrier ( 18 ) according to  claim 4 , characterised in that the inner bearing rings ( 17 ) lean against the wall of the afore-mentioned planet carrier ( 18 ) on a surface which as been mechanically processed for this purpose. 
   
   
       6 . Planet carrier ( 18 ) according to  claim 1 , characterised in that the microgeometry of the teeth ( 14 ) of the planetary wheels ( 6 ) is almost the same for planetary wheels ( 6 ) that are placed at the same axial distance from the walls ( 11 ,  12 ) of planet carrier ( 18 ), but where planetary wheels ( 6 ) which are placed axially next to each other possess teeth ( 14 ) with a different microgeometry. 
   
   
       7 . Planet carrier ( 18 ) according to  claim 2 , characterised in that the inner bearing rings ( 17 ) of the planetary bearings ( 7 ) of each planetary shaft ( 8 ) are axially enclosed between a collar on the planetary shaft ( 8 ) on the one end and a wall ( 11 ,  12 ) of the planet carrier ( 18 ) on the other end. 
   
   
       8 . Planet carrier ( 18 ) according to  claim 3 , characterised in that the inner bearing rings ( 17 ) of the planetary bearings ( 7 ) of each planetary shaft ( 8 ) are axially enclosed between a collar on the planetary shaft ( 8 ) on the one end and a wall ( 11 ,  12 ) of the planet carrier ( 18 ) on the other end. 
   
   
       9 . Planet carrier ( 18 ) according to  claim 2 , characterised in that the microgeometry of the teeth ( 14 ) of the planetary wheels ( 6 ) is almost the same for planetary wheels ( 6 ) that are placed at the same axial distance from the walls ( 11 ,  12 ) of planet carrier ( 18 ), but where planetary wheels ( 6 ) which are placed axially next to each other possess teeth ( 14 ) with a different microgeometry. 
   
   
       10 . Planet carrier ( 18 ) according to  claim 3 , characterised in that the microgeometry of the teeth ( 14 ) of the planetary wheels ( 6 ) is almost the same for planetary wheels ( 6 ) that are placed at the same axial distance from the walls ( 11 ,  12 ) of planet carrier ( 18 ), but where planetary wheels ( 6 ) which are placed axially next to each other possess teeth ( 14 ) with a different microgeometry. 
   
   
       11 . Planet carrier ( 18 ) according to  claim 4 , characterised in that the microgeometry of the teeth ( 14 ) of the planetary wheels ( 6 ) is almost the same for planetary wheels ( 6 ) that are placed at the same axial distance from the walls ( 11 ,  12 ) of planet carrier ( 18 ), but where planetary wheels ( 6 ) which are placed axially next to each other possess teeth ( 14 ) with a different microgeometry. 
   
   
       12 . Planet carrier ( 18 ) according to  claim 5 , characterised in that the microgeometry of the teeth ( 14 ) of the planetary wheels ( 6 ) is almost the same for planetary wheels ( 6 ) that are placed at the same axial distance from the walls ( 11 ,  12 ) of planet carrier ( 18 ), but where planetary wheels ( 6 ) which are placed axially next to each other possess teeth ( 14 ) with a different microgeometry.