DEVICE FOR TENSION OF BELT OF HEADER OF COMBINE OR HARVESTER Russian patent published in 2012 - IPC A01D61/02 B65G23/44 

FIELD: agriculture.

SUBSTANCE: tensioning device for belt of header of combine or harvesting machine has two spaced longitudinal bearing elements and at least one cross element attached to each of the longitudinal elements. The bearing cross-bar of the end roller is provided with two cantilever elements passing in the longitudinal direction, with the possibility of entering into sliding contact with the receiving elements attached to the longitudinal bearing elements. Pushing bar is oriented longitudinally and mounted slidably on the cross element between the longitudinal bearing elements. Pushing bar is attached to the bearing cross bar of the end roller and is set with the possibility of bringing in a retracted position and extended position. The actuator is attached to the longitudinal bearing elements and provides a substantially uniform force on the pushing bar in the range of its movement between the retracted position and extended position. The actuator can be made in the form of machinery such as scissors or a hydraulic cylinder.

EFFECT: tensile force applied to the end roller of the tape is not changed by adjusting the longitudinal position of the roller.

11 cl, 6 dwg