The Manhole Buddy Lifting Trolley is essentially a mobile lever, pivoting on its wheels and having two lifting points, the forward lifting hook for balanced lifting and carriage of covers and a pair of High Leverage lifting pins through which the cover unseating capability is accessed. The Manhole Buddy trolley delivers a mechanical advantage of just over 2.3:1 through the forward lifting hook, so a modest downward force of 25 kg on the trolley handle, translates into a lifting effort approaching 60 kg at the other end. The High Leverage lifting pins are positioned to deliver a mechanical advantage greater than 5:1 which means the 25 kg downward effort inputted by the user translates into a lifting force greater than 125 kg.
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