Step assisting device for all-terrain tracking obstacle crossing trolley

The utility model relates to a step assisting device for an all-terrain tracking obstacle crossing trolley. The step assisting device comprises a top plate, a climbing mechanism and a roller, the top plate is of an E-shaped plate structure which is horizontally arranged in the axial direction and is provided with a forward opening, and the rear side of the top plate is fixed to the front end of a chassis of the all-terrain tracking obstacle crossing trolley. The number of the crossing mechanisms is three, the three crossing mechanisms are fixed to the two sides and the middle of the bottom of the top plate correspondingly and correspond to the positions in front of the all-terrain tracking obstacle crossing trolley, a protection groove is formed between every two adjacent crossing mechanisms, and the position, corresponding to the lower portion of the rear end of the top plate, in each protection groove is provided with a tracking module. The roller is rotatably arranged at the front end of the top plate and