Okay, so imagine you have a really heavy box that you want to move to another place. But it's so heavy that you can't just pick it up and carry it. So, what can you do? You can use a special machine called a Hewitt crane!
A Hewitt crane is like a super tall robot with big arms that can pick up heavy things and move them around. It works kind of like your arms, but much stronger and bigger. The crane has a motor and a winch, which is like a really strong rope that can pull heavy things.
When you want to move your heavy box, the Hewitt crane will use its special arms to pick up the box and then use the winch to lift it up into the air. Then, it can move the box wherever you want it to go, even if it's really far away or up high in the air.
People use Hewitt cranes for lots of different things, like building big buildings or moving heavy machines. They're really useful because they can lift heavy things that would be impossible for people to move by themselves.