DEVICE FOR TEARING A NET FOR EXTERMINATING ILLEGAL FISHERY, AND THE MANUFACTURING METHOD THEREOF

摘要

PURPOSE: A fishnet cutting device for extermination of illegal fishing and a manufacturing method thereof are provided to secure a fishnet cutting device with improved structural strength and bearing force because three steel frames which support the load of the fishnet cutting device are connected through a connecting frame. CONSTITUTION: A fishnet cutting device for extermination of illegal fishing comprises a concrete block(1) and a plurality of steel frames(2) which are extended from the concrete block and radially arranged around the concrete block. One end of each steel frame is integrated in the concrete block by being buried to a specified depth. Each steel frame has a saw-toothed portion(3) or a rake-shaped net cutting unit. Three of the steel frames are arranged in a tripod form on the top and bottom of the concrete block and the other four are at an angular interval of 90 degrees along the central circumference of the concrete block.