The structure and working process of the telescopic cylinder barrel

- Jul 03, 2019-

The telescopic cylinder barrel is a hydraulic cylinder with a multi-stage sleeve-shaped piston rod that can obtain a long working stroke. The telescopic hydraulic cylinder is also called a multi-stage hydraulic cylinder.


Telescopic cylinder structure


The telescopic cylinder is made up of two or more piston hydraulic cylinders. The piston rod of the front piston cylinder is the cylinder of the rear piston cylinder.


Working process of telescopic cylinder


When the pressure oil enters from the rodless chamber, the cylinder with the larger effective area of the piston begins to stick out.

At the end point, the cylinder with the second effective area of the piston begins to protrude. The order of the telescopic hydraulic extension is extended from large to small, and a long working stroke can be obtained. The smaller the effective area of the overhanging cylinder, the faster the extension speed.


Therefore, the extension speed is slower and faster, and the corresponding hydraulic thrust is changed from large to small. The variation law of the thrust and speed is suitable for the thrust and speed requirements of various automatic loading and unloading machines. The order of retraction is generally retracted from small to large, and the axial length at the time of retraction is short, occupying a small space and compact structure. Commonly used in construction machinery and other mobile machinery, such as cranes, dump trucks and other hydraulic systems.