Leverage running Aketroheedrelik, and each column contains a hydraulic piston (put on). The existence of a security system included (system closure - Lock System) to secure the hydraulic and edited during the descent of the car as well as in order to be loaded weight it and edit hydraulic system to withstand the pressure permanently, but is the load on the hydraulic system in dissuading the processes of lifting up and down of the car, which ensures the preservation of the length of Omar hydraulic system and prolongs the period of periodic oil change and reduce operating expenses. Fitted Bmizanin (and they see the miners - Steel wire) so as to ensure the stability of the horizontal plane during car lift or downloaded and synchronized to the level of lifting (synchronisation), which is a system for the automatic process of lifting the pillars of both together. Leverage can be downloaded in case of blackouts easily, as well as the crane can be edited easily when problems occur in the system equilibrium and stability of the horizontal plane (Aloyrat).