Prevent conveyor that falls fast

The utility model relates to a prevent conveyor that falls fast. Include the mount and set up initiative roller and the driven roller at mount front and back both ends respectively, the cover is equipped with the transmission band between initiative roller and the driven roller, still be provided with between initiative roller and the driven roller and be used for the center sunken supplementary roller group of transmission band to its minor face orientation, supplementary roller group sets up at the supplementary running roller of mount both sides and is used for the fixed bolster of fixed supplementary running roller including the symmetry, supplementary running roller slope sets up in the mount both sides, contained angle between the supplementary running roller is between 90~120. The utility model discloses a prevent conveyor that falls fast, changes traditional parallel arrangement's supplementary running roller into slope symmetry setting, makes the transmission band sunken to the centre, and then makes