SCREW HAVING EXCHANGEABLE MODULE TYPE SCREW WING FOR EXCAVATING GROUND

摘要

PURPOSE: A screw for drilling the ground drilling with a replaceable modular screw wing is provided to facilitate the exchange of a damaged screw wing by detachably attaching a modular screw wing without welding. CONSTITUTION: A screw for drilling the ground drilling with a replaceable modular screw wing comprises a plurality of modular screw wing guides (2) and a modular screw wing (3). A modular screw wing guide is inserted and welded to a spiral groove longitudinally formed along the external diameter circumference of a screw shaft (1). The modular screw wing is inserted to the modular screw wing guide and is fastened using a fastening unit. The modular screw wing comprises a guide insertion groove, a fastening groove (31), and a wing fastening unit.