Truck mounted crane telescopic crane outrigger technology

Wheeled vehicle  Hoist equipment  telescopic outrigger system of beams and the supporting cylinder telescopic movement of the foot by a cylinder (or a group) control valve, the support pin cylinder large, the small chamber into the return pipe respectively, and cylinder beams large and small cavities on.

     Wheeled vehicle lifting device with retractable legs to drive the hydraulic system for telescopic movement telescopic box section beams cylinder or cylinder rod, telescopic box section and the supporting foot cylinders constitute a whole movement, unlike the existing outrigger bearing similar foot tank return line feed as land for expansion and contraction with outrigger beams stretch roll movement. Therefore, difficult to damage, but also to save the number of valves.

     One kind of telescopic beams and the support legs are used for the single rod transmission parts hydraulic cylinder  lift hoist  wheeled hydraulic telescopic leg, characterized in that the cylinder and the supporting pin cylinder beams together with one (or a group) for the the valve located in the beam cylinder rod ends and two vertical oil channel in which a large cavity communicates with the cylinder beams, cylinders and beams another small lumen, supporting foot cylinder of large and small chamber into the return pipe has one end respectively cross cylinder of large and small cavities on, and with the telescopic movement of the cylinder cross section, and cross section and the supporting pin expansion tank constituting a moving cylinder whole cross cylinder chamber and a large cylinder supporting pin large cavity into the return line between the and the cylinder valve with large cavity between the beams into the way back to the oil tank each furnished with a control action program backpressure valve.