Sliding roller conveyor to facilitate the introduction of the bonnet. Agility in going up and down even in the most dangerous and complex passages, and in addition all the innovations that the recent technology has devised so that nothing is neglected in the field of safety, like the revolutionary patented braking system that is inserted automatically releasing the feed button and immediately stops the travel of the trolley both uphill and downhill, so as to prevent the movement of the trolley during any phases of inertia with great advantage for the safety of the entire transport operation of the bonnet.