Assembled auxiliary carrying trolley

The utility model discloses an assembly type auxiliary carrying trolley which comprises an outer frame, idler wheels are arranged on the inner side of the outer frame, and one end of the outer frame is connected with a supporting piece through a rotating frame. A rotary supporting frame is detachably mounted in the middle of the top of the outer frame, and protection parts are further arranged at the four corners of the outer frame. The rolling wheels are arranged in the outer frame, the rotating supporting frame is detachably installed on the top of the outer frame, meanwhile, the supporting piece is further connected to the outer frame, in the using process, a steel pipe is placed on the outer frame, the supporting piece pulls the steel pipe, the rolling wheels assist in moving the steel pipe, and meanwhile the rotating supporting frame can adjust the position of the steel pipe when rotating; steering of the front end during steel pipe carrying is achieved, it is guaranteed that the steel pipes move forward