What types of hydraulic cylinders can be divided into structures according to their structure?

- Dec 13, 2018 -

According to the structure of common hydraulic cylinders, they can be divided into four types:

The piston type single piston rod hydraulic cylinder has a piston rod only at one end. It is a single piston hydraulic cylinder. Both ends of the inlet and outlet ports A and B can pass pressure oil or return oil to achieve two-way movement, so it is called double-acting cylinder.

The plunger type (1) plunger type hydraulic cylinder is a single-acting hydraulic cylinder, which can only achieve one direction of movement by hydraulic pressure, and the plunger return stroke depends on other external force or the weight of the plunger;

(2) The plunger is only supported by the cylinder liner and is not in contact with the cylinder liner, so that the cylinder sleeve is extremely easy to process, so it is suitable for a long stroke hydraulic cylinder;

(3) The plunger is always under pressure during operation, so it must have sufficient rigidity;

(4) The weight of the plunger is often large, and it is easy to sag due to its own weight when placed horizontally, which causes the seal and the guide to wear on one side, so it is more advantageous for vertical use.

The telescopic telescopic hydraulic cylinder has two or more stages of pistons. The order of the pistons in the telescopic hydraulic cylinders is from large to small, and the order of empty retraction is generally from small to large. The telescopic cylinder can achieve a long stroke, while the retraction length is shorter and the structure is more compact. Such hydraulic cylinders are commonly used in construction machinery and agricultural machinery.

The oscillating oscillating hydraulic cylinder is an actuator that outputs torque and reciprocates, also called an oscillating hydraulic motor. Available in single and double blades. The stator block is fixed to the cylinder and the vanes and rotor are connected together. According to the direction of the oil inlet, the blade will drive the rotor to reciprocate.

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