Patent ID: 7311278

Claim:
A crusher bucket comprising: a bucket body ( 7 , 70 ); a crushing lid ( 12 , 76 ) provided on said bucket body, said crushing lid being capable of being opened and closed relative to said bucket body; a material feed rate adjusting mechanism provided on at least one of said bucket body ( 7 , 70 ) and said crushing lid ( 12 , 76 ) to allow raw material scooped up into said bucket body ( 7 , 70 ) to be fed into a crushing chamber ( 7 a , 70 a ) is adjusted by an operator adjusting a angle of pivot of said bucket body ( 70 , 70 ); hammers ( 11 , 45 , 74 ) disposed on an outer periphery of a rotor driven rotationally by a power drive device to strike and break said raw material fed into said crushing chamber ( 7 a , 70 a ); and a repulsion plate ( 16 , 77 ) provided on said crushing lid ( 12 , 76 ) to collide with said raw material struck by said hammers ( 11 , 45 , 74 ); a hammer pivot shaft ( 24 ) inserted into said bearing ( 29 ) through said opening ( 31 ) during assembly process to pivotably support said hammer ( 11 , 45 , 74 ); a hammer retainer ( 35 , 55 , 65 ) inserted into said opening ( 31 ) and secured to said hammer ( 11 , 45 , 74 ); and a securing member ( 43 , 60 ) for securing said hammer ( 11 , 45 , 74 ) and said hammer retainer ( 35 , 55 , 65 ) to each other; wherein each of said hammers ( 11 , 45 , 74 ) has an opening ( 31 ) open outward and a cut portion ( 30 ) communicating with said opening ( 31 ), said cut portion being formed with a bearing ( 29 ) that supports said hammer ( 11 , 45 , 74 ) when said rotor rotates.