Load cell for screw piling power head

摘要

A system to measure the installation torque of a screw pile is provided. The system includes a rotary drive and a universal joint-type coupler. A load pin, having at least one sensor, is mounted through the universal joint-type coupler as a pivot pin. The load pin is oriented within the universal joint-type coupler so that at least some of the installation torque is transmitted through the load pin and is measurable by the sensor. Preferably, the load pin is provided with a pair of bores, and then a plurality of sensors are mounted within the bores. More preferably, a differential bridge network is used to obtain a measurable signal from the plurality of sensors.

主权项

1. A system to measure the installation torque of a screw pile, the system comprising:
machinery suitable to drive the screw pile into the ground, said machinery further comprising a rotary drive suspended by means of a universal joint-type coupler; and a load pin having at least one sensor, said load pin mounted through the universal joint-type coupler as a pivot pin; wherein the load pin is oriented within the universal joint-type coupler so that at least some of the installation torque is transmitted through said load pin and is measurable by said at least one sensor.