the picture above describes one of my ideas where i thought of using a jack to lift the load also by having a jack on each leg it would allow the main bar to be moved as needed and the whole frame be positioned as needed.





this is simliar to a gantry crane because of the length of the bar i have used an 'I' bar for extra strength and a high second moment of area. the adjustable legs means it can be used on all terrain and rollers will run down the bar to move the load it will be able to lower one side and shift the load.