Dual wheel assembly with variable wheel engagement

摘要

A variable engagement mechanism (10) for a dual wheel assembly is provided. The mechanism includes a spindle (12) having a drive axle (14) defining a rotational axis (A). A first wheel hub (16) is supported on the spindle and coupled to the drive axle for being rotatably driven about the rotational axis. A second wheel hub (18) is arranged adjacent to the first wheel hub and is rotatable relative to the first wheel hub about the rotational axis. Friction members (24,26) are provided between the first and second wheel hub. An actuator (30) forces the friction members into engagement with one another to permit transfer of torque between the wheel hubs. The actuator may be operator controlled or integrated with a braking or other vehicle control system. In this manner, the first and second wheel hub may be selectively locked together for increased traction and/or braking. A differential assembly may be used between the first and second wheel hubs so that both wheels may be driven at all times while being permitted to rotate relative to one another. <IMAGE>