The present invention is installed by attaching the fitting to the outside of the welded joint of the frame formed by banding, and when fixing the upper and lower frames and the support, by drilling a hole corresponding to the support in the frame and inserting the support to weld the structure of the frame and the support Regarding the trapping skeleton of the fishing traps to further strengthen and minimize the damage of the traps during fishing work,;In the upper and lower side and the middle portion of the annulus skeleton (1) and the annular skeleton (1) in the fishing vessel skeleton (A) to be fixed a plurality of struts (2). The hole 1b penetrates to the joint portion 1a of the annular frame 1 at both sides, and the hole 1b A plurality of holes in which the fitting 3 of the mold is installed, the end 3a of the fitting 3 is bent and welded to the frame 1, and the support 2 may be coupled to the upper and lower annular frames 1. 1c) to penetrate the support (2) and the end (2a) of the support (2) is slightly longer than the upper and lower annular frame (1) bending the end (2a) to weld the joint (4), or the annular frame Place the half-moon-shaped fittings 7 on the upper and lower sides of the fitting portion 1a of (1), and drill the holes 5 through the fittings 7 and the annular frame 1 to connect the fittings 7 to the framework 1. The point is to fix with the rivet (6).
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