How Does a Rock Crusher Work? | Sciencing
WEBApr 24, 2017 · A rock crusher is a device used to crush rocks into smaller pieces, usually for gravel or some other road or building appliion. Most rock crushers have a hopper at the top a container which holds the rock above the crusher and uses gravity to feed it in. Alternately, rock crushers can use a belt drive to continuously transport the rock ...