초록 ▼

The frame of a load-bearing vehicle has two beams extending one on each side of the frame and pivotally mounted to the frame. Between each beam and the frame is an air bladder, or other cushion. At the end of each beam is a linkage carrying a tag axle, wheel and tire. A power actuator rotates the li

The frame of a load-bearing vehicle has two beams extending one on each side of the frame and pivotally mounted to the frame. Between each beam and the frame is an air bladder, or other cushion. At the end of each beam is a linkage carrying a tag axle, wheel and tire. A power actuator rotates the linkage to bring the wheel and tire into ground engaging position at the end of the beam, and a second power actuator pivots the beams upwardly to raise the wheel-and-tire set; or pivots the beam downwardly to lower the wheel-and-tire set into ground engagement. Fluid motor actuators for the linkages and the beams respectively, are remotely operable so that the extra flotation wheels and tag axle can be brought into ground engagement when additional ground support is desired for the weight borne by the vehicle frame; or, the extra flotation wheels and tires can be raised to an elevated transport position, also by remote operation of the fluid motor actuators associated with the beam and linkage respectively.

대표청구항 ▼

A tag axle adapted to provide selectively, additional flotation for a load-bearing vehicle comprising in combination with a vehicle frame; two beam members extending rearwardly of said frame one from each frame side thereof, and each having a ground-engaging wheel, tire, and tag axle; means for moun

A tag axle adapted to provide selectively, additional flotation for a load-bearing vehicle comprising in combination with a vehicle frame; two beam members extending rearwardly of said frame one from each frame side thereof, and each having a ground-engaging wheel, tire, and tag axle; means for mounting said beams fOr angular movement thereof in a vertical plane; power actuated first means for lowering and raising said beam members; resilient cushioning means between said frame and each of said beams to provide cushioned support for ground loads transferred through the wheel and tire through said beam members to said frame and thereby providing additional cushioned ground support for said frame and the load-bearing therein; articulated linkage means between the respective extended ends of said beams and the associated wheel and tire at each side of said frame; and, power actuated second means for rotating said articulated linkage means to a first position wherein said wheels are elevated out of ground engageable position and for counterrotating said articulated linkage means to a second position wherein said wheels are disposed for ground engagement.