The speed of the hydraulic cylinder of the stationary scissor lift is relatively stable throughout the stroke without significant change. From the initial stage of the lifting platform to the stable operation stage, there is an acceleration stage during which the acceleration is relatively small, so the speed change is not obvious. When the lift platform reaches the top, there is a deceleration stage, and the acceleration in the deceleration stage is relatively small, so it can be said that the lift has no obvious acceleration and deceleration stage during the whole working process, and its movement speed is relatively stable
When choosing a hydraulic cylinder for a fixed scissor lift, the inner diameter of the hydraulic cylinder and the outer diameter of the piston should be marked because the piston and the piston rod also have other parts to cooperate with each other, such as sealing rings. These parts have been standardized, and there are specialized manufacturers, so the inner diameter of the piston and hydraulic cylinder should also be standardized so that standard parts can be selected.
When the piston rod of the scissor lift platform is fully extended, the distance from the midpoint of the piston support surface to the midpoint of the guide sliding surface is the minimum guide length of the piston. If the minimum guide length is too small, the initial deflection of the hydraulic cylinder will increase affecting its stability, so a minimum guide length must be guaranteed when designing a scissor lift.
