The invention discloses a
rock core inner tube salvager of a
submarine drilling rig
rope coring drilling tool. The
rock core inner tube fisher of the
submarine drilling rig
rope coring drilling tool includes a salvage
wire rope, an anti-clamping mechanism, a weight rod, a pressure rod, a fixed
guide tube, a rotary core clamp sleeve and steel balls; the salvage
wire rope is connected with the anti-clamping mechanism; the weight rod is fixed to the lower end of the anti-clamping mechanism, the pressure rod is fixed to the lower end of the weight rod and arranged in an inner cavity of the fixed
guide tube, a plurality of pressure rod oblique teeth are arranged at the lower end of the pressure rod, and a guide groove is formed in the side surface of the pressure rod; a guide key is arranged onthe side wall of the inner cavity of the fixed
guide tube, and the guide groove and the guide key form guide matching; the rotary core clamp sleeve is placed in the fixed guide tube, a
steel ball seat is fixed to the bottom of the fixed guide tube, a plurality of
steel ball holes are formed in the side wall of a circular column of the
steel ball seat, and one steel ball is arranged in each steelball hole; and the rotary core clamp sleeve moves downwards to enable the steel balls to move towards the center of the circular column. According to the
rock core inner tube fisher of the
submarine drilling rig
rope coring drilling tool, 'clamping' and 'releasing' can be extremely conveniently carried out on a rock core inner tube salvage spearhead, and the rock core inner tube fisher of the submarine drilling rig rope coring drilling tool further has the advantages of simple and compact structure and convenient handling.