Sea floor pipeline half-tile aligning device

The utility model discloses a sea floor pipeline half-tile aligning device which comprises a top-half ring plate and a bottom-half ring plate, wherein one end of the top-half ring plate is hinged with one end of the bottom-half ring plate. A disc-annulus shape is formed after the top-half ring plate and the bottom-half ring plate are rotatablely fastened with each other along a hinged position. An inner diameter of a disc-annulus-shaped ring plate is in line with an external diameter of a sea floor pipeline half-tile aligning place. Clamping plates are arranged on the two sides extending from a ring plate formed by the top-half ring plate and the bottom-half ring plate. Locking devices are arranged in the places relative to the hinged part of the top-half ring plate and the fastening part of the bottom-half ring plate. The sea floor pipeline half-tile aligning device can not only align quickly and accurately but also have efficient chucking power so that two pieces of half-tile can be tightly clamped, and the