Supporting device of U-shaped frame of cantilever beam of suction anchor, which is used for treating sea pipe suspended in midair

The utility model provides a supporting device of a U-shaped frame of a cantilever beam of a suction anchor, which is used for treating a sea pipe suspended in midair. The supporting device comprises the suction anchor, the cantilever beam, the U-shaped frame, a mechanical pipe clamp, pipeline positioning rubber, a locking wedge block, a tightly locking plate and a lock pin, wherein, the cantilever beam is connected with the mechanical pipe clamp in a welded manner; the suction anchor is fixedly connected with the cantilever beam through a bolt; a notch is formed on the suction anchor; the pipeline positioning rubber is embedded into the notch of the suction anchor and used for positioning a pipeline; a notch is formed at the middle part of one end surface of the cantilever beam, and the U-shaped frame is inserted into the notch and used for limiting the pipeline; notches are reserved on the two sides of the bottom end of the cantilever beam, and the tightly locking plate can be inserted into the notches; the