A conveying installation for transporting bulk materials has three pairs of carrying cables disposed one above the other. A continuous conveying belt can be moved along the central pair and the lower pair of carrying cables between loading and unloading stations, where it is guided over deflecting drums. Spaced-apart carrying frames hold the carrying cables. The installation includes a maintenance vehicle, which can be displaced along the two upper carrying cables and has on each side a maintenance platform, located laterally outside the carrying cables. The maintenance vehicle further has on at least one of the two sides a carrying framework, on which is located at least one drive subassembly for moving the maintenance vehicle. The drive subassembly is located laterally outside the carrying cables and beneath the undercarriage of the maintenance vehicle.