Deepwater surface layer guide pipe bearing capacity reinforcing device and deepwater surface layer guide pipe device

The utility model provides a deepwater surface layer guide pipe bearing capacity reinforcing device and a deepwater surface layer guide pipe device, comprising a pipe body which defines a central axis; the sliding sleeve can be sleeved outside the pipe body in an axial sliding manner; the multiple bearing plates are arranged around the pipe body at intervals, the bearing plates are hinged to the pipe body so as to swing between a retracting position and an opening position in a reciprocating mode around a hinge point, and the included angle between the bearing plates and the central axis when the bearing plates are located at the opening position is larger than the included angle between the bearing plates and the central axis when the bearing plates are located at the retracting position; each bearing plate is connected with the sliding sleeve through a linkage rod, and the sliding motion of the sliding sleeve and the swinging motion of the bearing plates are transmitted and converted through the linkage rod