IT’S A MECHANISM WHICH LIFT A CONSTRUCTION SITE MATERIAL FROM BOTTOM TO TOP TOO HEAD OF WORKER WITHOUT ANY BENDING MOVEMENT BY THERE SELF WEIGHT.
It’s eliminate 2 things
1. Worker can lift a material without bending movement.
2. If construction site contractor accept the mechanism for workers. He unable to get work from child labour because their weight should be above 35kg and height should be above 5ft.
I attached a video and photos for your better understanding.
Venus International college of Technology(GTU)