Steel truss girder jointing rod piece clearance adjusting device

The utility model discloses a steel truss girder jointing rod piece clearance adjusting device which comprises a hydraulic top supporting oil cylinder, a force holding frame arranged on a joint position of two rod pieces needing jointing and a counterforce seat arranged in the the force holding frame. The two rod pieces needing jointing comprise a first rod piece needing jointing and a second rod piece needing jointing. The hydraulic top supporting oil cylinder and the force holding frame are both arranged on the central axis of the force holding frame. One end of the force holding frame is a fixed end, and the other end of the force holding frame is a movable end. The fixed end is fixedly arranged on the first rod piece. The counterforce seat is fixedly arranged on the second rod piece. A first push plate is arranged at the movable end, and a second push plate parallel to the first push plate is arranged at the fixed end. The first push plate and the second push plate are both arranged parallel to the counterforce seat. The hydraulic top supporting oil cylinder is supported between the first push plate and the counterforce seat or between the second push plate and the counterforce seat. The steel truss girder jointing rod piece clearance adjusting device is simple in structure, reasonable in design, simple to machine, manufacture and install, simple and convenient to use and operate, good in utilization effect, and capable of greatly improving the adjusting efficiency and the adjusting accuracy of clearance of jointing rod pieces.