QZJ-160-220 adopts big span bridge and beam structure.the crossbeam and side beam are sealed adopt style of feed lift to achieve smooth and quick reamer rise,and slow feed ,the moved speed of automatic cutting anc be adjusted by frequency according to customer's requirement.the slabs are directly installed on the ground to save costs of maintenacnce.this machine works accurately with stable performance,high automatic and high efficiency.its installation,operation and maintenance are very simple.