Load distribution in a speed reducer with two intermediate transmission lines

Abstract

The invention relates to a speed reducer (10) with two intermediate transmission lines (16), in particular for a turbine engine, including an input line (12) and an output line (14) driven by the input line via said intermediate lines, said intermediate lines being substantially parallel, characterised in that it includes load-distribution means between said intermediate lines, said load-distribution means comprising ball-and-socket means (30) for rotatably coupling a first end of the input line, first means (34) for damping the radial movements of said end of the input line, and second means (34) for damping the radial movements of a second opposite end of the input line.

1 . Speed reducer with two intermediate transmission lines, in particular for a turbomachine, comprising an input line and an output line driven by the input line by means of said intermediate lines, these intermediate lines being substantially parallel, wherein it comprises a means of distribution of load between said intermediate lines, this means of load distribution comprising ball-and-socket means for swivel coupling a first end of the input line, first means for damping the radial movements of said first end of the input line, and secondary means for damping the radial movements of a second opposite end of the input line. 
     
     
         2 . Reducer according to  claim 1 , wherein said first and second damping means are configured to allow the input line to move in a direction substantially perpendicular to a plane passing substantially through the axes (C) of the intermediate lines. 
     
     
         3 . Reducer according to  claim 1 , wherein said first and second damping means comprise springs, preferably return springs. 
     
     
         4 . Reducer according to  claim 3 , wherein said springs are identical. 
     
     
         5 . Reducer according to  claim 1 , wherein said first and second damping means comprise roller bearings. 
     
     
         6 . Reducer according to  claim 5 , wherein said springs are identical, and wherein each of said first and second damping means comprises a roller bearing which is mounted on said first or second end of the input line, and which is supported by a spring. 
     
     
         7 . Reducer according to  claim 1 , wherein said first and second damping means are identical. 
     
     
         8 . Reducer according to  claim 1 , wherein said first and second damping means mounted on both sides of a gear of the input line. 
     
     
         9 . Reducer according to  claim 8 , wherein said first and second damping means are situated equidistantly from said gear. 
     
     
         10 . Turbomachine, wherein it comprises at least one reducer ( 10 ) in accordance with  claim 1 .