Rag bolt stretcher

The utility model relates to a rag bolt stretcher, its characterized in that, including fuselage and controller, the driving source sets gradually on the fuselage, pull rod, the device has the advantages of simple structure and convenient operation. Pull rod's one end and driving source are connected, the other end is equipped with left clamp -buckle, the driving source is used for driving the pull rod round trip movement, screw rod and fuselage screw -thread fit, a serial communication port, left side clamp -buckle and right clamp -buckle are used for cliping the rag bolt of detection, the last sensor that is equipped with of pull rod, be equipped with digital deformation measuring instrument on the fuselage, a screw rod, digit deformation measuring instrument and driving source are connected with the controller electricity. The utility model discloses simple structure, simple operation and detect accurately can put into production rather than just testing very fast in the laboratory in the environment, have