Patent ID: 9272283
Filing Date: 2016-03-01
CPC Classification: B02C,E02F

Claim Text:
1. A jaw crusher provided with a bucket attached to an arm of a construction machine, a fixed jaw fixed in the bucket, and a moving jaw opposed to the fixed jaw and pivotally supported on the top by an eccentric shaft and supported on the bottom by a toggle mechanism, the fixed jaw and the moving jaw being arranged such that a space on a scooping side of the bucket is opened wide as an inlet and is gradually narrowed toward the depth and continues to an outlet of the bucket, for crushing materials to be crushed by swing of the moving jaw, wherein the jaw crusher comprises a motor for rotating the eccentric shaft forward and reverse and provided in the bucket; a pedal for crushing work; and crushing control means which, when the pedal for crushing work is initially operated, automatically rotates the eccentric shaft in reverse by reversing the motor first and then, rotates the shaft forward for crushing the material.