Open-shelf type working-stage ROV (Remote Opening Vehicle)

The invention relates to the technical field of underwater robots, in particular to an open-frame type working-stage ROV which comprises an ROV body and a mechanical arm. The ROV body sequentially comprises a top end first buoyancy material, a top end second buoyancy material, a top end third buoyancy material, a top end fourth buoyancy material, a front end first buoyancy material, a first encircling device, a second encircling device, a middle part first buoyancy material, middle part buffer rubber, a front end sensor mounting bracket, a front end sensor platform and an ROV bottom layer frame from top to bottom; a third encircling device, a side scan sonar mounting bracket, a side scan sonar, a bottom plate and bottom buffer rubber; the method is mainly applied to pile foundations, oil and gas transportation pipelines and the like in shallow water areas, and can realize various processes of underwater structural part overhaul operation including acoustics, visual target recognition, surface cleaning, nondes