ROCK CRUSHER AND ROCK CRUSHING METHOD USING THE SAME CRUSHER

PURPOSE:To take both rock crushing force and a rock crushing stroke largely by transmitting pushing force in the direction that the diameter of a pushing member is expanded over a pushing-force transmission body by a driving mechanism under the state, in which the driving mechanism is inserted into a guide hole drilled to a bedrock. CONSTITUTION:Pushing force in the direction that the diameters of pushing members 20, 20 are expanded is transmitted over pushing-force transmission bodies 30, 30 by a drive mechanism 40 under the state, in which the driving mechanism is inserted into a guide hole G1 drilled to a bedrock G to be crushed. Consequently, the pushing-force transmission bodies 30 are moved, and pushing force in the direction that the guide hole G1 is pushed open is transmitted from the pushing members 20. When a center spacer 50 is interposed between the pushing-force transmission body 30 and the pushing member 20, pushing force generated by the driving mechanism 40 is transmitted over the pushing member 20 through the center spacer 50 from the pushing-force transmission body 30. The center spacer 50 is formed in a tapered shape at that time, thus smoothly inserting the center spacer 50 up to the interior of the crack of the crushed bedrock. The center spacer 50 and side spacers 51, 51 are adjusted in response to the change of the opening of the crack, and approximately constant spreading and size can be held in the driving mechanism 40.