Connecting transition regulating device for railway steel rail transport vehicle

The invention discloses a connecting transition regulating device for a railway steel rail transport vehicle. The connecting transition regulating device comprises a steel rail left supporting plate, a connecting movable plate, a steel rail connecting body and a steel rail right supporting plate, which are sequentially connected from left to right, wherein one end of the steel rail left supporting plate is fixedly connected with a front vehicle body, and the other end of the steel rail left supporting plate is in rotating connection with the connecting movable plate; a rectangular through hole is formed in the front end surface of the connecting movable plate from left to right; the steel rail connecting body consists of a front sheet connecting body and a rear sheet connecting body which are fixed together, and a connecting movable plate mounting groove is formed between the front sheet connecting body and the rear sheet connecting body; the steel rail connecting body and the connecting movable plate are fix