The working principle of each cylinder is almost similar, take a manual jack, the jack is actually the simplest cylinder. Xingxingda through manual pressure stalk (hydraulic hand pump) to make the hydraulic oil through a check valve into the cylinder, at this time the hydraulic oil entering the cylinder can no longer be reversed because of the single valve, forcing the cylinder rod up, and then continue to make the hydraulic oil continue to enter the hydraulic cylinder, so that it continues to rise, to lower when the hydraulic valve is opened, so that the hydraulic oil returns to the tank, the principle of the cylinder and the cylinder is basically the same.
According to the structural form of commonly used hydraulic cylinders, they can be divided into four types: piston type, plunger type, telescopic type and swing type.
We all know that the hydraulic cylinder is a very important component for the hydraulic machinery, playing the role of an executive element in the entire hydraulic machinery, and the hydraulic cylinder in the whole process is to convert the hydraulic energy into mechanical energy. According to the range of pressure used, we can divide the hydraulic cylinder into three categories: light pressure, medium pressure and heavy pressure. According to JIB-B8354 specification, hydraulic cylinders can be divided into the following specifications according to the use pressure.
For the selection of hydraulic cylinders, we generally select hydraulic cylinders according to the inner diameter, stroke, use pressure, and installation type in the process of selecting hydraulic cylinders. Xingda in addition to these there are the following points that are worth our attention, first of all, when the hydraulic cylinder is loaded and the operating speed reaches a certain standard, a hydraulic cylinder with a buffer device must be used. Or when reaching a higher speed, a reduction valve must be installed outside the hydraulic cylinder; The second is to carefully select hydraulic oil and oil seal. Different hydraulic oils use oil seals of different materials to ensure the life of hydraulic cylinders.
