Patent ID: 8191810
Filing Date: 2012-06-05
Classification: B02C

Abstract:
1. A crusher comprising: a crusher frame; a crushing rotor rotatably supported by the crusher frame; a housing pivotably mounted to the crusher frame; a fixed blade supported by the housing to face a crushing chamber around the crushing rotor; a lever disposed on a side opposite the crushing rotor with respect to the housing, installed pivotably with respect to the crusher frame, and provided with a holding portion at one part for holding the housing to keep a posture where the fixed blade faces the crushing chamber; biasing means for biasing a different part of the lever with respect to a turning center of the lever with a set biasing force so that when a turning force applied to the lever via the holding portion exceeds the set biasing force, the lever turns to release the restraint of the housing and to permit the fixed blade to turn and retreat from the crushing chamber; and a roller turnably provided at the holding portion of the lever to be abutted against the housing.