| 摘要 |
PROBLEM TO BE SOLVED: To provide a crusher which easily crushes a concrete structure and has a prolonged life time of a crushing member. SOLUTION: This concrete crusher comprises: a pair of crushing members 1 and 1 which are provided with crushing blades 5 and 5 on inner surfaces opposed to each other; a frame 3 to support the crushing members 1 and 1 so that they are opened, closed and turned; and a hydraulic cylinder 4 to open, close and turn the crushing members 1 and 1. As for the side shape or the cross section shape of the crushing blade 5, blade surfaces 5b and 5b are each formed in the shape of a convex surface from the shape of a concave curve to form an arrowhead shape so that compressive force is intense in an early stage of crushing and wedge force excels gradually in order to improve crushing efficiency to a material to be crushed W. COPYRIGHT: (C)2003,JPO
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