Chain tension sensor

摘要

A chain tension sensor for a chain conveyor, the conveyor including a frame and a chain having a plurality of flights. The tension sensor includes a reaction arm and a load sensing pin. The reaction arm includes a first end, a second end opposite the first end, and a load pad. The first end is pivotably coupled to the frame by a pivot pin defining a pivot axis. The load pad is adjacent the conveyor chain and positioned to contact flights passing the load pad. The flights contacting the load pad exert a force on the reaction in a direction that is perpendicular to the pivot axis. The load sensing pin is coupled to the reaction arm such that the load sensing pin senses the force that is exerted by the flights.

主权项

1. A sensor assembly for sensing a chain break in an endless conveyor, the conveyor including a frame, two spaced apart chains, and a plurality of flights connected between the chains, the sensor assembly comprising:
a first sensor sensing a characteristic indicative of a tension of the one chain; a second sensor sensing a characteristic indicative of a tension of the other chain; and a comparator receiving a signal from the first sensor and receiving a signal from the second sensor, the comparator comparing the signal from the first sensor and the signal from the second sensor to determine a difference between the tension of the one chain and the tension of the other chain.