A lift conveying device for persons and/or objects, comprising at least one tube that is flooded with liquid or can be flooded with liquid, comprising a tube wall having an inner tube wall and an outer tube wall, at least one floating unit, in particular a plurality of concentrically arranged floating units, with an inner face and an outer face (31, 33), that is/ are, in particular concentrically, arranged in the tube,, at least one conveying cabin, in particular a plurality of conveying cabins, that are arranged or can be arranged, in particular are arranged, outside the tube and have at least one cabin door and one cabin wall having an inner cabin face and an outer cabin face (65, 67) and optionally at least one conveying channel, in particular a lift shaft, wherein the at least one conveying cabin and the at least one floating unit are interconnectable or interconnected by one or more connection units, wherein the at least one conveying cabin is controllable, in particular adjustable in height, by the at least one floating unit of the at least one tube that is flooded with liquid or can be flooded with liquid, the floating unit comprising at least one pump system and at least one supply unit, wherein the at least one floating unit comprises at least one buoyancy body, in particular in the form of at least one air chamber, in particular compressed air chamber, and/or, in particular and, at least one downforce body, in particular in the form of at least one ballast tank, characterised in that the supply unit comprises at least one compressor, and in that the at least one floating unit comprises at least one, in particular central, penetration channel, comprising an inner channel face and an outer channel face (43, 45), which extends through the at least one floating unit, in particular through the at least one buoyancy body and the at least one downforce body, and optionally through the at least one supply unit. at least one tube that is flooded with liquid or can be flooded with liquid, comprising a tube wall having an inner tube wall and an outer tube wall, at least one floating unit, in particular a plurality of concentrically arranged floating units, with an inner face and an outer face (31, 33), that is/ are, in particular concentrically, arranged in the tube,, at least one conveying cabin, in particular a plurality of conveying cabins, that are arranged or can be arranged, in particular are arranged, outside the tube and have at least one cabin door and one cabin wall having an inner cabin face and an outer cabin face (65, 67) and optionally at least one conveying channel, in particular a lift shaft, wherein the at least one conveying cabin and the at least one floating unit are interconnectable or interconnected by one or more connection units, wherein the at least one conveying cabin is controllable, in particular adjustable in height, by the at least one floating unit of the at least one tube that is flooded with liquid or can be flooded with liquid, the floating unit comprising at least one pump system and at least one supply unit, wherein the at least one floating unit comprises at least one buoyancy body, in particular in the form of at least one air chamber, in particular compressed air chamber, and/or, in particular and, at least one downforce body, in particular in the form of at least one ballast tank, characterised in that the supply unit comprises at least one compressor, and in that the at least one floating unit comprises at least one, in particular central, penetration channel, comprising an inner channel face and an outer channel face (43, 45), which extends through the at least one floating unit, in particular through the at least one buoyancy body and the at least one downforce body, and optionally through the at least one supply unit.