Bucket-type jaw crusher

A bucket-type 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 slag and other materials to be crushed by swing of the moving jaw, characterized in that

• a motor for rotating the eccentric shaft forward and reverse is provided in the bucket;
• and
• crushing control means is provided which automatically rotates the eccentric shaft in reverse by the motor and then, rotates the shaft forward when crushing the material to be crushed.