Straight cylinder lifting type trailing suction dredger

The utility model provides a straight tube lifting type trailing suction dredger, which relates to the technical field of trailing suction dredgers and comprises a lifting mechanism, and a stirring mechanism is fixedly mounted at the top of the lifting mechanism. The two electric telescopic rods are opened at the same time, the output ends of the two electric telescopic rods are fixedly connected with the top of one supporting plate, so that one supporting plate drives the sleeve to move downwards, and the two supporting plates are fixedly arranged on the outer surface wall of the sleeve in a sleeving mode. And four supporting columns are fixedly mounted between the opposite sides of the outer walls of the two supporting plates, so that the stability of downward movement of the sleeve is improved, and the drag suction hopper can sink to different depths according to excavation requirements under the action of a sealing plate, so that the drag suction hopper can adapt to excavation operation in water areas wit