| 摘要 |
A differential drive and steering system for a vehicle includes a differential drive device including an input shaft which is drivingly connected to a pair of output shafts by a differential gear device. A torque converter is drivingly connected with the differential gear mechanism and includes a speed control shaft journaled on the differential gear mechanism housing. A pair of variable pitch pulleys are respectively mounted on the speed control and input shafts and are connected by an endless belt. A transmission shaft is drivingly connected to one of the output shafts and is connected to the speed control shaft by a planetary gear mechanism. A drive sprocket is keyed to the input shaft and a driven sprocket is secured to the planetary gear mechanism. An endless chain is trained about the sprockets whereby the vehicle may be steered by selectively varying the pitch on the pulleys.
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