Torque multiplier for valve turning machine

摘要

A vehicle with devices thereon for exercising the valves of a municipal water system includes a first arm with a valve turning machine at its outer end. A second arm is also attached to the vehicle, the second arm having a torque multiplier head having an input end and an output. A connector connects the valve turning machine to the input and the output of the torque multiplier applies increased torque to the stem of a valve.

主权项

1. A device for turning the stem of a valve comprising
a vehicle, a first arm rotatably mounted on said vehicle, said first arm having an inner end rotatably mounted on said vehicle and an outer end movable relative to said inner end laterally beyond said vehicle, a valve turning machine at said outer end of said first arm, said valve turning machine including an output drive for turning said valve stem, a second arm movably mounted on said vehicle, said second arm having an outer end movable relative to said vehicle, a multiplier head at said outer end of said second arm, said multiplier head having an input attachable to said output drive, and said multiplier head also having an output drive for turning said valve stem.