Height-adjustable support for semitrailers or the like

Height-adjustable support for semitrailers, in which a foot plate, on which a rolling element rolls, is arranged at a lower end of an extendible support part, and, after a compensating stroke and raising of the support have taken place, resetting means pull the foot plate back into a basic position running symmetrically to a longitudinal axis and retain the foot plate in this position against the rolling element, wherein the foot plate is suspended on tension springs which are arranged in two parallel planes situated in each case between a track roller and a wall of an inner support tube, and are fastened to the foot plate by one eyelet in each case in the inner support tube and by their other eyelet directly below the inner support tube, in that there is a stop device for the inner support tube and the foot plate, and in that the support has a retaining device via which the foot plate and the inner support tube can interlock.