Double-plough body suspended span submarine pipeline ditching and backfilling equipment

The invention relates to submarine pipeline ditching equipment and in particular relates to double-plough body suspended span submarine pipeline ditching and backfilling equipment. The double-plough body suspended span submarine pipeline ditching and backfilling equipment comprises a traveling mechanism, a main frame, a steering mechanism, a plough body group, a soil gathering mechanism and a plough body rack. Compared with common pipeline ditching equipment, the structure provided by the invention has the advantages that a plough body is additionally arranged, the soil gathering mechanism is additionally arranged, the traveling mechanism supports the whole equipment, the extension and retraction of a hydraulic cylinder on the traveling mechanism can change the angle and depth of support legs of the traveling mechanism, and a skid shoe type traveling way is adopted. The double-plough body suspended span submarine pipeline ditching and backfilling equipment has the beneficial effects that the soil gathering mechanism is additionally arranged, so that the pipeline suspended span problem is solved; ditching and backfilling processes can be carried out simultaneously, and multiple layers of plough bodies are adopted for carrying out soil plowing operation, so that the stress condition of the equipment is improved; and meanwhile, the mechanism is simplified, and the operating efficiency is increased.