A turntable going up and coming down installation of inspection equipment for closure head of nuclear reactor

摘要

The present invention is to provide a turntable lifting device of the inspection equipment for the reactor closer head capable of quick lifting and lowering of the turntable, a lower stroke hydraulic jack of a long stroke for lifting and lowering the conventional screw rod lifting device, and Mounted on the ram of the lower hydraulic jack is characterized in that it consists of a composite jack consisting of a short stroke hydraulic jack that rises and rises very slowly.