This devise is overturned cage relates to aquaculture net fixed lower frame for, the lower frame for fixing the net to the bottom of the rollover cage fish farms in accordance with the invented this in more detail, two each pipe is a cross-shape without a long two long branches and slot the slot is formed that dogs are blocked and the other one has two pairs formed by two short of short formed ball bolt corner fixture, corner fixtures of the two pairs four outer which are respectively inserted in the insertion port formed in a rectangle each pipe, the outer inside which are a plurality connected in a predetermined interval on the outside of each pipe of the side of square pipe one side and corresponding in each pipe, the outer square pipes and the inside of each pipe chapter of for the above to connect the outer side a slot in which each pipe is inserted across the insertion of the body and the inside each of the pipe provided on both sides is inserted toward the inside the fixture and the bolt hole of the corner fastener formed on said body outer each insertion rod to be inserted into the front end of the pipe main bolts inserted into the bolt holes, comprising: the second bolt and the bolt 3, Inserted to the outside of each pipe blockage that is inserted into only directions clogged in the corner fasteners are, and insert the bolt through each pipe, each pipe crosses are inserted toward the ball, the main bolt is inserted in the bolt holes of the corner fixing each inserted up through the pipe insertion rod predetermined depth and, in the aspect of the insertion rod is inserted into the second bolt is inserted at the main bolt inserted into the insertion rods do not, the third bolt the main bolt inserted into the insertion rod gangway is not loose or deformed is also upset with long insert it relates to cage farms for net fixed lower frame.본 고안은 전복 가두리양식장 그물고정용 하부 프레임에 관한 것으로, 더욱 상세하게는 본 고안에 따른 전복 가두리양식장의 하부에 그물을 고정하기 위한 하부 프레임으로, 2개의 각파이프가 교차되는 형상으로 삽입구가 형성된 긴 2개
