Patent ID: 8033487
Filing Date: 2011-10-11
Classification: B02C

Abstract:
1. A crusher comprising: a pair of rocking side walls that can be rocked to open and close and have an upward opening; a rotating shaft having a rotating blade at a space enclosed by both rocking side walls for crushing an object with a fixed blade provided at an inner side of one of the rocking side wall and the rotating blade in cooperation with each other; a first rocking shaft, which is placed below the rotating shaft and is parallel to the rotating shaft, for rocking each rocking side wall; a second rocking shaft, which is placed outside of the first rocking shaft and is parallel to the first rocking shaft, for rocking each rocking side wall; a rocking axis of the rocking side walls is made to move from the first rocking shaft to the second rocking shaft when the rocking side walls are to be opened; and a rocking axis of the rocking side walls is made to move from the second rocking shaft to the first rocking shaft when the rocking side walls are closed.