Universal robot capable of self-adaptively crossing steps

The invention discloses a universal robot capable of self-adaptively crossing stairs, belongs to the technical field of obstacle crossing robots, and aims to solve the problem that an existing obstacle crossing chassis cannot realize effective crossing and walking of stepped obstacles. The universal robot comprises a rotating cam, a frame, a straightening plate, a pole vault mechanism and a walking mechanism. According to the pole vault mechanism, inner track plates are circular plates with the bottoms concave inwards, outer track plates are annular plates, the outer edges of the annular plates are square, the inner edges of the annular plates are matched with the inner track plates, the outer track plates are fixedly connected, the outer track plates are fixedly connected with fixing plates, the inner track plates are fixedly connected with the fixing plates, and space curved grooves are formed between the outer track plates and the inner track plates. A first bolt is installed between the track outer plates