A differential drive system, comprising:
- a rotary kinetic power source (P100);
- a first output end transmission device (T100) and a second output end transmission device (T200);
- a left side wheel set (W100) combined with a left side wheel shaft (S101) on a first side of a common load body (L100);
- and
- a right side wheel set (W200) combined with a right side wheel shaft (S102) on a second side of the common load body (L100),
- wherein the first and second output end transmission devices (T100,T200) are directly or indirectly coupled to the rotary kinetic power source (P100) and to the left and right side wheel shafts (S101,S102) to form respective left and right side power transmission couplings between the rotary kinetic power source (P100) and the left and right side wheel sets (W100,W200), and
- wherein the differential drive system further comprises:
- a dual-shaft flexibility transmission device (FC100) having a slip coupling torque between left side and right side output ends, the left side and right side output ends of the dual-shaft flexibility transmission device (FC100) being respectively coupled to at least one of the following:
- (a) the left side wheel shaft (S101) and the right side wheel shaft (S102);
- (b) an input end of the first output end transmission device (T100) and an input end of the second output end transmission device (T200);
- and (c) an internal structure in the first output end transmission device (T100) and an internal structure in the second output end transmission device (T200);
- a first individually-controlled output end clutch device (CL100) for engaging and releasing the power transmission coupling between the rotary kinetic power source (P100) and the left side wheel set (W100);
- a second individually-controlled output end clutch device (CL200) for engaging and releasing the power transmission coupling between the rotary kinetic power source (P100) and the right side wheel set (W200),
- wherein during turning of the common load body (L100), one of said first and second individually-controlled output end clutch devices (CL100 or CL200) is operated to selectively release a corresponding left or right side power transmission coupling between said rotary kinetic power source (P100) and one of said left side and right side wheel sets (W100,W200), whereby an inner one of the wheel sets (W100,W200) during the turn is enabled to rotate at a speed lower than an outer one of the wheel sets (W100,W200) while maintaining a torque-limited power connection to the rotary kinetic power source (P100) through said dual-shaft flexibility transmission device (FC100), and
- wherein:
- the dual-shaft flexibility transmission device (FC100) is installed between the left side wheel shaft (S101) and the right side wheel shaft (S102);
- the first individually-controlled output end clutch device (CL100) is installed between the left side input shaft (S101) and the first output end transmission device (T100);
- and
- the second individually-controlled output end clutch device (CL200) is installed between the right side input shaft (S102) and the second output end transmission device (T200).