Hydraulic cylinder is now a popular equipment in the mechanical industry, it uses its own characteristics are selected by manufacturers, so what are the characteristics of it? Here is one for you to introduce:
First, from the point of view of energy conversion, hydraulic pump and hydraulic motor are reversible working hydraulic components, and the input of working liquid to any hydraulic pump can make it into a hydraulic motor condition. On the contrary, when the main shaft of the hydraulic motor is driven by the external torque, it can also be changed into the hydraulic pump condition. Because they have the same basic structural elements - a closed and periodic volume and the corresponding oil distribution mechanism.
Second, because the working conditions of hydraulic cylinders and hydraulic pumps are different, their performance requirements are not the same, so there are still many differences between the same types. First of all, the hydraulic motor should be able to be positive and reverse, so it requires its internal structure to be symmetrical; Its speed range needs to be large enough, especially for its stable speed has certain requirements. Therefore, it usually uses rolling bearings or static plain bearings; Secondly, because it works under the conditions of input pressure oil, it is not necessary to have self-priming ability, but a certain initial sealing is required to provide the necessary starting torque. Because of these differences, the two are relatively similar in structure, but they cannot work reversibly.
Third, the air viscosity is small, the resistance is less than the hydraulic cylinder.
But the compression rate of air is much higher than the hydraulic cylinder, so its work stability and response are far from it. Hydraulic cylinder is a more important actuator in hydraulic system, which converts hydraulic energy into mechanical energy and works with various transmission mechanisms to complete various mechanical movements. The hydraulic cylinder has the characteristics of simple structure, large output force, stable and reliable performance, easy use and maintenance, and wide application range.
Fifth, the air can be used inexhaustible, there is no cost and supply difficulties, the used gas is directly discharged into the atmosphere, easy to handle, will not pollute, the hydraulic cylinder is the opposite.
Because the pressure used in the pneumatic system is generally in the range of 0.2-1.0Mpa, the hydraulic cylinder can not be a high-power power component. The hydraulic cylinder can be a relatively large power component, using the hydraulic system.
The above two points are the characteristics of the hydraulic cylinder, so that we know more about it, through the characteristics of the inventory, we are not difficult to know why it will let many manufacturers buy.
