Hydraulic transmission control of hydraulic pneumatic fluid equipment is a control method often used in the industry. It uses hydraulic pressure to complete the process of transferring energy. Because of the flexibility and convenience of hydraulic transmission control methods, hydraulic control has received extensive attention in the industry. Hydraulic transmission is a discipline that studies the use of pressurized fluid as an energy medium to achieve various mechanical and automatic control. Hydraulic transmission uses this kind of element to compose various required control circuits, and then several circuits are organically combined to complete a certain control function transmission system to complete energy transmission, conversion and control.
In principle, the basic principle on which hydraulic transmission is based is the Pascal principle, that is, the pressure across the liquid is the same. In this way, in a balanced system, the pressure applied by a smaller piston is smaller, The pressure exerted by the piston is also relatively large, which can keep the liquid still. So through the transfer of liquid, different pressures on different ends, so that a transformation can be achieved. The hydraulic jacks we commonly use are based on this principle to achieve force transmission.
Basic Principles of Hydraulic Transmission
The components required in hydraulic transmission are mainly power components, actuators, control components, auxiliary components, etc. Among them, hydraulic power components are components that generate power for hydraulic systems, and mainly include various hydraulic pumps . The hydraulic pump relies on the principle of volume change to work, so it is generally called a volume hydraulic pump. Gear pump is a common type of hydraulic pump, which makes the liquid move through the rotation of two meshing gears. Other hydraulic pumps include vane pumps and plunger pumps. The main issues to pay attention to when selecting a hydraulic pump include energy consumption, efficiency, and noise reduction.
Hydraulic actuators are devices used to perform the conversion of hydraulic energy provided by a hydraulic pump into mechanical energy. They mainly include hydraulic cylinders and hydraulic motors. The hydraulic motor is a device that performs the opposite work to a hydraulic pump, that is, the energy conversion of hydraulic pressure is called mechanical energy, so that work is performed externally.
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