TENSIONER OF BELT CONVEYOR FOR CONTINUOUS-ACTION TUNNEL DRYERS Russian patent published in 1998 - IPC

FIELD: materials handling facilities; agriculture. SUBSTANCE: tensioner has housing and two sliders one of which is coupled with conveyor driven shaft, and the other, with screw mechanism. Calibrated working resilient plate and additional resilient plate are installed between sliders. With screw mechanism being turned on, preset increase in tension of conveyor belt driven shaft at two sides is provided owing to resilient deformation of working plate which prevents inadmissible sagging of belt and its engagement with dryer members. Conveyor drive limit switches are installed from top and bottom of working plate to suit the conditions of its designed sagging thus preventing emergencies by stopping the conveyor. EFFECT: provision of smooth changes of load on conveyor belt, improved safety in operation. 3 dwg