Automatic stepping transport truck

The invention relates to the technical field of jack-up type drilling platforms of an oilfield, in particular to an automatic stepping transport truck. The two sides of a truck frame of the automatic stepping transport truck are respectively provided with a walking hydraulic cylinder, a clamping forceps mechanism and a centering device, wherein one walking hydraulic cylinder is connected with one clamping forceps mechanism, a pipe guide device, a pipe winding device and a locking mechanism are installed on the truck frame, the pipe guide device is connected with the pipe winding device, anti-collision rubber is installed at the front end of the truck frame, each clamping forceps mechanism comprises a clamping forceps frame body and a clamping jaw, each clamping jaw is provided with a tooth board and can be firmly grasped on a slide guide rail, a jacking base is installed between the clamping jaws and the slide guide rail, the clamping jaws are connected with the two clamping forceps frame bodies through rotary pin shafts, the clamping forceps frame bodies are provided with clamping forceps opening adjusting handles, and a pressurization hydraulic cylinder is fixedly installed between the two clamping forceps frame bodies through a hydraulic cylinder fixing base. The automatic stepping transport truck can transport blowout preventers with large loads in a long distance, and is large in bearing capacity, stable in operation, accurate in movement distance and suitable for advanced explosion-proof areas. The defect that the blowout preventers with the large loads are difficult to transport in the long distance is overcome.