Pile casing guiding device for deep-water shallow-coverage large-diameter pile casing cast-in-situ bored pile

The invention relates to the technical field of cast-in-situ bored pile construction, and particularly discloses a deep-water shallow-coverage large-diameter pile casing guide device for a cast-in-situ bored pile, which comprises a base ring, a plurality of adsorption parts are arranged on the lower side of the base ring, the lower side of each adsorption part adsorbs and fixes a lifting appliance, the lower sides of the lifting appliances are jointly and fixedly connected with a lifting ring, and the lower side of the lifting ring is coaxially and fixedly connected with an outer pile casing; the device further comprises a sinking ring, the sinking ring is located below the hanging ring, the sinking ring and the hanging ring are fixedly connected together through a pull rope, and at least one supporting rod is rotationally connected to an outer ring of the sinking ring. The guide device has the beneficial effects that the sinking ring sinks into a riverway to a riverbed under the action of gravity, at the mom