Patent ID: 8127756
Filing Date: 2012-03-06
Classification: B24B,B24D

Abstract:
1. An apparatus for grinding concrete blocks comprising: a conveyor which transports the concrete blocks to a position where they are ground; a frame disposed above the conveyor; a grinding machine suspended from the frame and rotationally supported at lower ends of two vertical bars suspended from said frame and facing each other in the direction in which the conveyor is advanced; a rotating shaft of said grinding machine which is rotationally supported by said two vertical bars; means for rotating said rotating shaft; and means for switching the direction in which the grinding machine is rotated, wherein when a side ridge portion on an upper surface of the concrete block is ground, the grinding machine is rotated from above to below at a grinding position, while when a side ridge portion on a bottom surface of the concrete block is ground, the grinding machine is rotated from below to above at the grinding position, ridge line portions and/or side surfaces of the concrete blocks on the upper and the bottom surfaces of the concrete block can be ground by positioning the side ridge line portions on a bottom surface of the concrete block so as to protrude from the conveyor and positioning the axis of the rotating shaft to be lateral to and above the conveyor and then lowering the grinding machine so as to abut its surface against the ridge line portions and/or side surfaces.