1. The hydraulic system for the access device having a platform configured to move between a deployed position and a folded position, wherein the hydraulic system comprises: at least one hydraulic power unit adapted to promote the hydraulic fluid through the hydraulic circuit, at least one hydraulic cylinder, directly or indirectly connected with a part of the platform and adapted to promote the platform in a direction at least od th from the retracted position and the deployed position, wherein at least one hydraulic cylinder is in fluid communication with a hydraulic power unit iregulyatorny pressure valve in the channel between the at least one hydraulic power unit and at least one hydraulic cylinder, wherein the regulator pressure valve is controlled so as to avoid the fact that at least one hydraulic cylinder propelled platform in the folded position when the load on platform exceeds a predetermined porog.2. Hydraulic system according to Claim. 1, wherein the pressure regulator valve adapted to regulate the flow of hydraulic fluid through the regulator valve davleniya.3. Hydraulic system according to Claim. 1, wherein the pressure regulator valve is arranged to maintain a predetermined hydraulic fluid pressure delivered by the regulator valve davleniya.4. Hydraulic system according to Claim. 1 in which a predetermined load threshold is in the range from about 20 pounds to about 100 funtov.5. Hydro1. Гидравлическая система для устройства доступа, имеющего платформу, выполненную с возможностью перемещения между развернутым положением и сложенным положением, причем гидравлическая система содержит:по меньшей мере один гидравлический силовой блок, выполненный с возможностью продвижения гидравлической жидкости через гидравлический контурпо меньшей мере один гидравлический цилиндр, непосредственно или опосредовано соединенный с частью платформы и выполненный с возможностью продвижения платформы в направлении по меньшей мере одного из сложенного положения и развернутог
