The operation of hydraulic cylinders is based on the principle of fluid pressure on a flat figure. The first experiments in this area in the distant past were started by the great inventor and scientist Leonardo da Vinci. After him, many physicists, mathematicians, astronomers and mechanics worked to improve the operation of the hydraulic cylinder.
Galileo Galilei began to carry out the first practical experiments and showed the dependence of speed on hydraulic resistance. Fluid mechanics developed in different directions and in parallel many new laws and theories were discovered. The law on the internal friction of a liquid was invented and the concept of vacuum appeared. Many new devices and mechanisms have appeared that have simplified human work.
Subsequently, fluid pressure began to be used in many industries from construction to astronautics. The principle of operation of all modern hydraulic cylinders is based on the creation of pressure in the piston due to the working fluid. The stem is returned to its original position by a spring.
Modern hydraulic cylinders
Several basic types of hydraulic cylinders are now used in the industry. The simplest and most common are single-acting hydraulic cylinders , in which a spring is used to return the mechanism to its original position. Models without spring return are available if not required for this mechanism. Hydraulic cylinders with two-way action, work due to the pressure created by the liquid in both directions. And the speed of movement of the piston depends on the size of the area of the chambers. Telescopic hydraulic cylinders can work on the principle of one-way or two-way, the only difference is that the cylinders are inserted into each other so that they are rods of each other.
