Abstract: An underfloor lifting platform (100) for lifting vehicles comprising a canister (200) configured to be arranged underground and a first and a second cylinder piston units (300a, 300b). The first and the second cylinder piston units (300a, 300b) are movable along a vertical direction (X). The underfloor lifting platform (100) comprises a first and a second bearing (400) configured to slidably guide the first and the second cylinder piston units (300a, 300b). The underfloor lifting platform (100) comprises a plate (401) including a central aperture (402) for receiving the cylinder liner (302) in contact therethrough and through holes (403) surrounding the central aperture (402). The underfloor lifting platform (100) comprises a sleeve (404) defining a passage for receiving the cylinder liner (302) in sliding contact therethrough and connecting portions (405) integral to the sleeve (404).

Abstract: A lifting platform for motor vehicles has at least one extendable lifting column that is formed by a tubular jacket and a lifting cylinder unit arranged at least partially therein. The upper end of the lifting cylinder unit supports a load receptacle. The tubular jacket and the lifting cylinder unit are air-tightly connected to one another and form a compressed air storage chamber between the inner wall of the tubular jacket and the outer wall of the lifting cylinder unit. The compressed air storage chamber is provided with a compressed air supply connector and, in the upper end area, with a compressed air outlet connector. The lifting device is preferably an underfloor lifting platform with hydraulic cylinders. A check valve is arranged in the filling direction upstream of the compressed air supply connector.

Abstract: A lifting platform for motor vehicles has at least one extendable lifting column that is formed by a tubular jacket and a lifting cylinder unit arranged at least partially therein. The upper end of the lifting cylinder unit supports a load receptacle. The tubular jacket and the lifting cylinder unit are air-tightly connected to one another and form a compressed air storage chamber between the inner wall of the tubular jacket and the outer wall of the lifting cylinder unit. The compressed air storage chamber is provided with a compressed air supply connector and, in the upper end area, with a compressed air outlet connector. The lifting device is preferably an underfloor lifting platform with hydraulic cylinders. A check valve is arranged in the filling direction upstream of the compressed air supply connector.