Hydraulic cylinders

The hydraulic cylinder is generally composed of cylinder block, cylinder rod (piston rod) and seal, and the cylinder body is divided into two cylinder parts by piston, and an oil hole is passed respectively. Since the compression ratio of the liquid is small, when oil enters one of the oil holes, the piston will be pushed to make the other oil hole oil, and the piston will drive the piston rod to extend or retract and vice versa.

The working principle of the hydraulic cylinder

Let's talk about it first. There are 5 basic components: 1-cylinder barrel and cylinder head, 2-piston and piston rod, 3-sealing device, 4-buffer device, 5-exhaust device.

The working principle of each cylinder is almost similar, take a manual jack as an example, the jack is actually a . Simple cylinder too. Through the manual booster straw (hydraulic hand pump) to make the hydraulic oil through a one-way valve into the cylinder, then the hydraulic oil entering the cylinder can not be reversed because of the single valve, forcing the cylinder rod upward, and then continue to make the hydraulic oil continue to enter the hydraulic cylinder, so that it continues to rise, when it is to fall, open the hydraulic valve, so that the hydraulic oil returns to the oil tank, this is. The simple working principle, the others are improved on this basis, and the principle of the cylinder is basically the same as that of the cylinder.