Patent ID: 8894543

Claim:
A differential drive system, comprising: a first transmission device (T 101 ); a rotary kinetic power source arranged to drive the first transmission device (T 101 ); a left side wheel set combined with a left side wheel shaft on a first side of a common load body (L 100 ); and a right side wheel set combined with a right side wheel shaft on a second side of the common load body (L 100 ), a first output end transmission device for transmitting power from the first transmission device (T 101 ) to the left side wheel set; a second output end transmission device for transmitting power from the first transmission device (T 101 ) to the right side wheel set; a dual-shaft flexibility transmission device having a slip coupling torque between left side and right side output ends; a first individually-controlled output end clutch device for engaging and releasing the power transmission coupling between the rotary kinetic power source and the left side wheel set; a second individually-controlled output end clutch device for engaging and releasing the power transmission coupling between the rotary kinetic power source and the right side wheel set, wherein one of said first and second individually-controlled output end clutch devices is operated to selectively release a corresponding left or right side power transmission coupling between said rotary kinetic power source and one of said left side and right side wheel sets to enable one of the wheel sets to rotate at a speed lower than the other one of the wheel sets while maintaining a torque-limited power connection to the rotary kinetic power source through said dual-shaft flexibility transmission device, and wherein the dual-shaft flexibility transmission device is installed in one of the following configurations: (a) between the left side wheel shaft and the right side wheel shaft; (b) between opposite input ends of the first and second output end transmission devices; (c) between opposite output ends of the first and second individually-controlled output end clutch devices; and (d) between transmission components of the first and second output end transmission device having a same transmission wheel system in a straight running state.