Lifting frames

BPERFORMING OPERATIONS TRANSPORTING B66Lifting technology B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR

B66F7/00Lifting frames

B66F7/02with platforms suspended from ropes, cables, or chains or screws and movable along pillars B66F7/025screw operated B66F7/04hydraulically or pneumatically operated B66F7/06with platforms supported by levers for vertical movement B66F7/0608driven by screw or spindle B66F7/0616Suspended platforms B66F7/0625with wheels for moving around the floor B66F7/0633Mechanical arrangements not covered by the following subgroups B66F7/0641Single levers B66F7/065Scissor linkages B66F7/0658Multiple scissor linkages horizontally arranged B66F7/0666Multiple scissor linkages vertically arranged B66F7/0675Auxiliary scissors B66F7/0683Scissor linkage plus tilting action B66F7/0691Asymmetric linkages B66F7/08hydraulically or pneumatically operated B66F7/085pneumatically operated B66F7/10with platforms supported directly by jacks B66F7/12by mechanical jacks B66F7/14screw operated B66F7/16by one or more hydraulic or pneumatic jacks B66F7/18by a single central jack B66F7/20by several jacks with means for maintaining the platforms horizontal during movement B66F7/22with tiltable platforms B66F7/24for raising or lowering vehicles by their own power B66F7/243Ramps B66F7/246Wheel supporting trolleys B66F7/26for selective lifting of parts of vehicles B66F7/28Constructional details