Double-rail self-walking trolley for rail flaw detecting

The utility model relates to the field of rail flaw detection, in particular to a double-rail self-walking trolley for rail flaw detecting. The double-rail self-walking trolley for rail flaw detecting is characterized in that a servo sub-system, a flaw detection sub-system and an electrical-control subsystem are arranged on a basic trolley frame, the electrical-control subsystem is connected with a driving motor, the flaw detection subsystem and the servo subsystem, the servo subsystem comprises a coupling and spraying mechanism and two servo centering mechanisms, the coupling and spraying mechanism is arranged on the basic trolley frame, and the servo centering mechanisms are installed on the two sides of the basic trolley frame respectively; the flaw detection subsystem comprises ultrasonic detection wheels and control circuits of the ultrasonic detection wheels, and the ultrasonic detection wheels are fixedly connected to the servo centering mechanisms; the basic trolley frame is composed of a front trolley frame body, a rear trolley frame body and a connecting trolley frame body, and the front trolley frame body is fixedly connected with the rear trolley frame body through the connecting trolley frame body. The double-rail self-walking trolley for rail flaw detecting has the advantages that compared with a traditional hand pushing type flaw detection trolley, the efficiency is higher, the overall structure is simple, and the manufacturing cost of the trolley is far lower than that of a large damage detection trolley.