PURPOSE: A system of cracking a baserock is provided to reduce the working hours and the labor by locating easily a liner of a crusher of baserock into each insert hole formed horizontally on the upper side of a baserock or a concrete structure. CONSTITUTION: A system of cracking a baserock comprises : a working car(24) to be hinged with a boom(30) by a first cylinder(28) for moving up and down on a driving body(22) ; a bucket(34) to be equipped by a second cylinder(32) for moving up and down ; an elasticity boom(36) to be equipped by a third cylinder(38) for rotating from side to side and to be equipped by a fourth cylinder for being elastic ; a twist maintaining member(40) to rotate in fixed angle ; a hydraulic motor(50) to be equipped on a twist maintaining member(40) ; liners(14a, 14b, 56a, 56b) to be equipped on a motor shaft of a hydraulic motor(50) for rotating and to be inserted into an inserting hole ; a controller to be equipped on a drivers seat(26) and to control the movements.
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