Design of direction detector for rotating shaft in belt conveyor

In order to avoid direction error of rotating shaft during the running of belt conveyor due to equipment failure or operational errors, a direction detector was designed. On the basis of the relative motion of gear pair and one-way clutch, the detection of the rotating direction of a shaft was transformed into the detection of signal from proximity switch, and determined by a PLC controller. The device was tested on a two-way belt conveyor, the results showed that this device could monitor the running state of belt conveyor with the accuracy of 100%, correct the running status of processing line timely. The maintenance response time was shortened by 5 min. This device provides a technical support for promoting the process control level of tobacco primary processing.