Skid loader having an extendable boom

摘要

In the skid steer loaders with conventional booms composed of a front arm loaders of the subject innovation, in one side of the side of the main arm and the work installed on the vehicle body to be connected to the main arm and the other side of the bucket it is provided, external to the main arm installation and yi one side ends are fixed to the front arm, by hydraulic pressure, and installing the front arm inside the two-stage cylinder and the main arm for raising or lowering movement on one side ends are fixed to the front arm, the two-stage cylinder in conjunction with extending or retracting is characterized in that comprises a control valve for controlling the oil pressure to the inlet or outlet to the two-stage bar and the two-stage cylinder for supporting the movement of the front arm