Belt conveyor

The utility model provides a belt conveyor which comprises a conveying belt and further comprises a first installation frame used for installing a driving roller and a tensioning mechanism, the tensioning mechanism comprises a tensioning support and a tensioning roller which are fixed with each other, one end of the tensioning support is fixed with the first installation frame, the other end of the tensioning support is fixed with the tensioning roller, and the conveying belt bypasses the tensioning roller. And one or more groups of deviation prevention mechanisms for preventing the conveying belt from shifting are oppositely arranged on the two sides of the conveying belt. The belt conveyor provided by the utility model has the functions of conveying belt tensioning and deviation prevention, the tightness of the conveying belt is adjusted by adjusting the tensioning mechanism, so that the conveying belt always keeps proper tension, the conveying belt is adjusted to be always on a preset advancing route throu