Heavy-caliber base rock boring coring device

The invention discloses a heavy-caliber bedrock drilling core device which comprises an adapting flange, a wire rope, a wiring sleeve hole, a guiding core barrel and annular beckets, wherein, the adapting flange and the wiring sleeve hole are arranged on the top of the guiding core barrel; the annular beckets are arranged on both ends of the wire rope; the invention also comprises a supporting block and a wedge block; one end of the wire rope passes through annular beckets on the other end, and the other end of the wire rope forms the shape of a ring and is arranged on the lower part of the guiding core barrel and bound on the inner wall of the guiding core barrel through a fixture; one end of the wire rope which passes through the annular beckets is arranged on the upper part of the guiding core barrel after passing through the wiring sleeve hole; the wedge block is arranged on the upper part of the guiding core barrel; the supporting block is welded at the bottom of the guiding core barrel. The heavy-calibe