Valve body clamping device

The utility model discloses a valve body clamping device which comprises a first installation plate, a gear installed on the first installation plate in a rotating mode and a pair of racks installed on the first installation plate in a sliding mode, the racks are both meshed with the gear and move reversely under driving of the gear, and the two racks are both fixedly connected with clamping arms. The valve body clamping device further comprises a driving mechanism used for driving the gear to rotate. The valve body clamping device has the advantages that according to the technical scheme, the pair of racks are driven by the driving mechanism through the gear to move reversely so that the pair of clamping arms can get close to each other to loosen clamping of the valve body or get away from each other to clamp the valve body, clamping is stable, falling is not prone to occurring, valve body transferring is convenient, valve bodies of different sizes can be clamped, and universality is good; according to the t