How does the telescopic cylinder work?

The telescopic cylinder consists of two or more piston cylinders. The inner hole of the piston rod of the former piston cylinder is the cylinder of the latter piston cylinder, which can obtain a longer working stroke when extending and keep a smaller structural size when retracting. The extension of the telescopic cylinder is carried out gradually. First, the cylinder with the largest diameter begins to extend when the oil pressure is the lowest. When it reaches the end of the stroke, the cylinder with a slightly smaller diameter begins to extend, and the cylinder with the smallest diameter in the last stage finally extends. With the increase of working stages, the diameter of the outrigger cylinder becomes smaller and smaller, and the working speed becomes faster and faster. Hope to adopt!