ZOOMLION 50 Ton Truck Crane QY50D531

Zoomlion Truck Crane Qy55V

The truck crane adopts self–made special-purpose chassis with 8×4 drive.

The crane adopts WEICHAI Steyr engine which is specially developed for those cranes that often travel at low speed.

The crane is equipped with 9-speed gearbox which changes gear smoothly and is of simple structure and makes maintenance convenient.

The crane is fitted with a 42m long hexagon-section boom which is made of high-strength steel, so the boom has strong resistance to bending and torsion.

The boom applies an arbitrary telescopic type which can improve the stability of crane when it works with large working radius. (When boom telescopes in different sequence, the position of boom’s centre of gravity is adjusted accordingly.)

The unique manual full proportional control incorporates the advantages of traditional lever control and electric-hydraulic pilot control.

The slewing mechanism has the functions of protecting the crane automatically when the crane is overloaded, reducing the impacts, and activating hydraulic brake when the hydraulic control valve is in neutral position as well as free swing. In addition, it can automatically make boom, wire rope and lifted load slew simultaneously, and minimize the sway of boom and load while the crane starts or stops quickly, and accelerates or decelerates slewing.

The outrigger beam boasts such advantages as large outrigger span and outstanding stability. Moreover, this kind of outrigger has half-extended working mode, so the working range is extended.

The 5th outrigger is fitted with warning device (acoustic alarm), which can make operator know about the retracting state of the 5th outrigger so as to enhance safety performance of the crane.