| 摘要 |
A rock crusher is provided to perform rock crushing work easily by coupling simply to a boom of an excavator and inserting to a perforated hole of a bedrock layer and widening/splitting the bedrock layer with uniform hydraulic pressure. A rock crusher(100) attached to a boom of an excavator is disclosed and inserted to a perforated hole of a bedrock layer to supply strong hydraulic force evenly over the whole surface of the bedrock layer in the perforated hole and to widen the bedrock layer to be cracked and crushed by attaching an upper corporate body(10) to a boom(202) of an excavator(200), inserting a cracking structure fitted with an opening structure to a perforated hole of a bedrock layer, operating a hydraulic cylinder(16) attached on the base of the upper corporate body and projecting a piston of the hydraulic cylinder in the downward direction and pressurizing the top of a primary opening end(34) united to the top of a reciprocating bar(32) of the opening structure, moving the primary opening end along an incline formed on the top of primary and secondary outer bushings(20,22) in the downward direction using the pressure of the piston to widen the upper part of the primary and secondary outer bushings in the outer direction and moving a secondary opening end(36) of the reciprocating bar along the surface of each hanging projection(26) in the downward direction to widen the middle and lower part of the primary and secondary outer bushings in the outer direction, so that the whole surface of the primary and secondary outer bushings gives pressure to the whole surface of the bedrock layer in the perforated hole evenly. |
