Crushing device for stone

The invention discloses a crushing device for a stone. The crushing device comprises a crushing device shell, a feeding opening, a left jaw plate, a right jaw plate, a telescopic rod, connecting rodsand a driving mechanism, wherein the bottom of the left jaw plate and the bottom of the right jaw plate are both rotationally arranged in the crushing device shell, a gap is formed between the left jaw plate and the right jaw plate, and the size of the gap is the same as the length of a required crushing stone block; the connecting rods are hinged to the upper portion of the left jaw plate and theupper portion of the right jaw plate correspondingly, and the two connecting rods are hinged to the two sides of the telescopic rod correspondingly; and the telescopic rod slidably penetrates throughthe upper side of the crushing device shell and is connected with a driving mechanism for driving the telescopic rod to move up and down. According to the crushing device for the stone, through the arrangement of the driving m