VEHICULAR LOW PROFILE SELF PROPELLED AERIAL WORK PLATFORM

摘要

A VEHICULAR LOW PROFILE SELF PROPELLEDAERIAL WORK PLATFORMAbstractA vehicular low profile self propelled aerial workplatform assembly having a turntable positioned in ahorizontal plane in close proximity to the axles of thevehicle. A parallelogram linkage is provided between asuperstructure support frame carried by the turntable and ariser frame assembly to which one end of a telescopic boomassembly is pivotally connected, the aerial work platformbeing mounted on the outermost end of the telescopic boomassembly. A counterweight is detachably connected to thesupport frame and is formed with a trough aligned with asimilar trough provided in the support frame, theparallelogram linkage includes a pair of tubular armswhich extend through the troughs when the work platform isin the lowermost position. When in the lowermost position,the height of the pivotal connection of the telescopic boomassembly to the riser frame assembly is approximately eightfeet allowing the assembly to be employed in warehouses andmanufacturing plants having low and narrow doorways andaisles. The support frame and parallelogram linkage aresymmetrical with respect to the centerline of the machineto thereby distribute stresses equally through the machine.When in the elevated position, the superstructure supportframe, parallelogram linkage, and counterweight arepositioned within the wheelbase of the vehicle to therebyprovide a zero tailswing.