A complete hydraulic system consists of five parts, namely, power components, actuators, control components, auxiliary components and hydraulic oil.
The role of the power element is the prime mover of the mechanical energy is converted into a liquid pressure energy, the hydraulic system of the pump means, which provide power to the entire hydraulic system. Hydraulic pump structure generally have gear pumps, vane pumps and piston pumps, compare their performance, such as 1-1
Implementation of components (such as hydraulic cylinders and hydraulic motors) the role of the fluid pressure energy is converted to mechanical energy to drive the load for linear reciprocating or rotary motion.
Control element (i.e. various hydraulic valves) in the hydraulic system to control and regulate fluid pressure, flow and direction. According to the different control functions, hydraulic valves can be divided into pressure control valves, flow control valves and directional control valves. Pressure control valve is divided into benefits flow valve (safety valve), reducing valves, sequence valves, pressure relays, etc.; flow control valve includes a throttle valve, regulating valve, flow diversion valve; directional control valve includes a check valve, check valve, shuttle valve, valve and so on. According to the control in different ways, hydraulic valves can be divided into switching control valves, control valves and constant proportional control valve.
Auxiliary components including fuel tanks, filters, tubing and fittings, seals, pressure gauge, oil level, oil temperature meter, etc..
Hydraulic oil is the hydraulic energy transfer system working medium, a variety of mineral oil, emulsion oil hydraulic molding Hop categories.
Hydraulic system advantages:
With mechanical transmission, electrical transmission compared to hydraulic drive has the following advantages:
1, all kinds of hydraulic components, as needed easily and flexibly to decorate.
2, light weight, small size, small inertia, fast response.
3, manipulation easy to control, can achieve a wide range of variable speed (speed range up to 2000:1).
4, automatic overload protection.
5, generally use mineral oil as the working medium, relative motion surface can be self-lubrication, long service life.
6, it is easy to achieve linear motion.
7, it is easy to realize automation of the machine, when combined with fluid power control, not only to achieve a higher degree of automatic control process, and can achieve remote control.
