Patent ID: 6447419
Filing Date: 2002-09-10
Classification: B60K,B62D,Y10T

Abstract:
A axle driving apparatus comprising;a pair of axles; a speed-change HST including a fluid pressure pump of variable capacity type and a fluid pressure motor coupled to each other by a fluid; a first differential arrangement power-coupled to an output shaft of the motor of said speed-change HST for differentially coupling a pair of said axles to each other; a steering HST including a fluid pressure pump of variable capacity type and a fluid pressure motor coupled by a fluid to each other; a second differential arrangement power-coupled to an output shaft of the motor of said steering HST; a forward rotation/reverse rotation switching transmission mechanism interposed between an output means of said steering HST and an input means of said second differential arrangement; a pair of steering output shafts differentially coupled to each other through said second differential arrangement; a first transmission train interposed between one of said steering output shafts and one of said pair of axles, and a second transmission train interposed between the other steering output shaft and other axle for transmitting the turning effort to said other axle in the opposite direction to said first transmission train.