초록 ▼

A lifting dolly is provided for quickly and easily lifting a helicopter or the like while on the ground and for transporting the helicopter for maintenance or storage purposes. The lifting dolly comprises a relatively low profile central frame supported for rolling movement by a pair of wheel assemb

A lifting dolly is provided for quickly and easily lifting a helicopter or the like while on the ground and for transporting the helicopter for maintenance or storage purposes. The lifting dolly comprises a relatively low profile central frame supported for rolling movement by a pair of wheel assemblies and including laterally outwardly pivoting lifting arms for engaging the skid tubes of a helicopter. In use, the dolly is positioned beneath the helicopter and the frame is lowered to rest upon the ground whereupon the lifting arms are pivoted outwardly to press wedge-shaped lifting fingers beneath the skid tubes. Rollers on the underside of the frame permit lateral frame shifting as the fingers engage the skid tubes such that the dolly centers itself between the skid tubes. When the skid tubes are engaged, the frame is elevated by the wheel assemblies to lift the helicopter for convenient rolling movement.

대표청구항 ▼

A lifting dolly for lifting and transporting a helicopter or the like supported on the ground by a spaced pair of generally parallel skids, comprising: a generally horizontally oriented central frame having a width less than the spacing between the skids, a length generallv less than the lengths of

A lifting dolly for lifting and transporting a helicopter or the like supported on the ground by a spaced pair of generally parallel skids, comprising: a generally horizontally oriented central frame having a width less than the spacing between the skids, a length generallv less than the lengths of the skids, and a plurality of rollers mounted at the underside thereof; a plurality of wheels coupled to said frame; means for adjusting the elevation of said frame relative to said wheels between a first position with said frame elevated above the ground and said wheels in rolling contact with the ground and a second position with said rollers resting on the ground; a plurality of lifting arms coupled generally to opposite sides of said frame and movable between retracted and laterally outwardly extended positions relative to said frame, each of said lifting arms carrying a lifting finger positioned generally on the ground when said frame is in said second position for pressing beneath an associated one of the skids; and means for moving said lifting arms in unison toward said extended positions when said frame is located between the skids and disposed in said second position to press said lifting fingers beneath the skids, said rollers accommodating lateral shifting of said frame toward a centered position between the skids as said lifting fingers press beneath the skids, said frame elevation adjusting means being thereupon operable to move said frame to said first position thereby lifting the helicopter off the ground.