Tandem Wheel Four-Bar Linkage Torque Balance

The patent applies a counterbalancing linkage mechanism that acts as a mechanical counterweight system. When one wheel experiences upward torque force, the linkage transmits an equal and opposite downward force through the frame, balancing the torque distribution. This allows single-wheel power delivery while maintaining stable wheel-ground contact, resolving the contradiction between simplified drive system and stability.

The patent introduces a torque distribution linkage as an intermediary mechanism between the power source and tandem wheels. This linkage automatically balances torque distribution through mechanical force transmission, eliminating the need for complex electronic control systems or differential mechanisms. The intermediary linkage simplifies the overall system while achieving stable torque balance.

The patent segments the torque transmission system into independent linkage components connected through pivotal joints. This segmentation allows each component to be manufactured and assembled separately with standard tolerances, while the overall mechanism automatically achieves torque balance through its mechanical design. The segmentation eliminates the need for high-precision chain alignment while maintaining stable torque distribution.