A STEERABLE TRAILER OR DOLLY FOR A MULTI-COMBINATION ROAD VEHICLE

摘要

A dolly (20) has chassis (22). A set of rear axles (36) is supported from a rear end of the chassis (22) and a set of landing legs (38) extend downwardly from a front end of the chassis (22). Coupled to the landing legs (38) is a set of steerable wheels (40). More particularly the steerable wheels (40) are coupled to an axle (41) that in turn is connected to the landing legs (38). The landing legs (38) are telescopically extendible between an extended position and a retracted position. When in the extended position the legs (38) are extended so that the wheels (40) engage the road or other surface on which the dolly (20) travels. When the legs (38) are in the retracted position the wheels (40) are lifted from the road. The dolly is provided with motive power by way of one or both of an engine (24) and a steerable wheel power system. An on-board controller (52) is operatively associated with the steerable wheels (40) and the motive power source. A remote control unit can communicate with the on-board controller to enable remote steering and driving of the dolly (20).