What is the ratio of the rising speed of the lift fork of the stacker to the speed of the piston rod of the lifting hydraulic cylinder?

The correct answer indicates that the lift fork of the stacker rises at twice the speed of the piston rod of the hydraulic cylinder. This relationship stems from the mechanics of hydraulic systems and how they are designed to operate.

In hydraulic lift systems, the hydraulic cylinder provides the lifting force, pushing the piston rod upwards. However, to achieve a greater lifting speed for the lift fork, the mechanical design often incorporates a system of levers, pulleys, or even a specific arrangement of the hydraulic circuitry. These designs effectively amplify the motion of the piston rod, translating it into faster movement of the lift fork.

By understanding this concept, it becomes clear that while the piston rod moves a certain distance, the lift fork may be designed to move twice that distance in the same amount of time. This enables efficient and rapid lifting, which is essential in applications requiring swift loading and unloading processes. Therefore, recognizing how hydraulic systems can be optimized to achieve different speeds is key in understanding why the lift fork would be moving at twice the speed of the piston rod.