QY70K Truck Crane,truck crane,truck mounted crane

Elevating time: approx.60s......

Elevating angle: -2?~ 78?

Boom elevation is driven by one differential cylinder with a balancing valve.

3.8 Elevating system

Max. single line speed: approx. 108m/min.

Wire rope length: approx.125m

Wire rope diameter: 18mm

Auxiliary winch is controlled by open oil circuit. Variable-displacement motor, compact and high performance professionally made planetary gear reducer with wet brake, drum with special rope groove and rotation resistance wire rope are available.

3.7 Auxiliary winch:

Max. single line speed: approx. 130m/min.

Wire rope length: approx.185m

Wire rope diameter: 20mm

Main winch is controlled by open oil circuit. Variable-displacement motor, compact and high performance professionally made planetary gear reducer with wet brake, drum with special rope groove and rotation resistance wire rope are available.

3.5 Main winch

Conventional control is carried out by 2 self-centering 4-way joysticks in the carrier cab. All movements of the crane are controlled by pilot control through hydraulic pump and proportional valve, stepless speed variation is available.

3.4Control

Hydraulic oil tank capacity: approx. 600 L

The pressure difference between pump outlet pressure and load pressure can change variable pump inclination of oil distributor through load feedback port, thus changing the flow of the pump. With the control of constant power variable displacement pump, the pressure and flow of the pump can be adjusted well by load feedback, thus greatly increasing control performance and energy-save effect. The pilot control valve uses an imported electro hydraulic proportional valve. The moving angle of its handle is directly proportional to the input current, so does the movement of the main control valve element. Thus the whole machine has good fine motion control.

Superstructure hydraulic system adopts pilot electro hydraulic proportional control and has function of load-feedback. The main control valve is advanced load sensitive type proportional multi-way change valve.

The vehicle power is transferred by hydraulic system of combination of open type variable displacement and constant displacement. The main winch system with variable displacement pump and motor has constant power and can get lower speed with heavy load, higher speed with light load.

3.3 Hydraulic system

Designed and manufactured by XCMG, equivalent stress and tapered cross-section box-type structure, made of high-tension steel.

3.2 Turntable

The roller slewing bearing as connection of the carrier and the crane superstructure can rotate 360? continuously. The roller bed is sealed to resist water and dust.

3.1 Slewing mechanism

3. Crane Superstructure

A set of maintenance tool is available.

2.11 Tool

24V DC, negative ground, 2 batteries. Lighting device comprises of front headlamp, fog light and reversing light etc., complied to the relative regulations in China National Standard.

2.10 Electrical equipment

5th outrigger jack: located under the front of the vehicle frame for 360? operation of the boom.

Outrigger span (longitudinal