Telescopic Crane With Retractable Outrigger

- Jun 08, 2017 -

Wheeled with the vehicle lifting equipment telescopic support leg hydraulic system, its crossbeam oil cylinder and support foot oil cylinder's telescopic movement all by one (or a group of) reversing valve control, supports the foot oil cylinder big, the small cavity inlet tubing respectively and the crossbeam oil cylinder big, the small cavity to connect.

Wheeled servo lifting equipment telescopic support leg hydraulic system and drive Telescopic box section for telescopic movement of the beam cylinder or piston rod, the telescopic box and the supporting foot oil cylinder form a movement whole, unlike the current supporting leg support foot oil cylinder into the back of the pipe as the extension of the leg beam stretching. Therefore, not easily damaged, but also to save the number of reversing valve.

A kind of hydraulic system of telescopic support leg with single piston rod hydraulic oil cylinder and supporting foot is used as transmission part, and the characteristic is that the crossbeam oil cylinder and the supporting foot cylinder use one (or a group of) reversing valves together, in the beam cylinder piston rod is equipped with two longitudinal oil channel, one with the beam cylinder large cavity interlinked, and another with the beam cylinder small cavity interlinked, supporting the foot oil cylinder big, small cavity into the pipeline have one end respectively with the beam cylinder big, small cavity, and the telescopic movement part of the crossbeam and the Telescopic box section and the supporting foot cylinder form a movement whole, the back pressure valve is arranged on the return circuit between the large cavity of the crossbeam oil cylinder and the large cavity of the supporting foot oil cylinder, and on the return circuit between the directional valve and the large cavity of the crossbeam oil cylinder.