| 摘要 |
PURPOSE: Two boom rods are connected by a link assembly to have two separate central axis, thereby operating two boom rods without restriction by hydraulic cylinder and a link body connected to the boom rods. CONSTITUTION: A knuckle telescopic crane comprises a shaft support(10) fixed in a bottom surface. A rotation member(20) is connected to upper part of the shaft support rotating around the center shaft of the shaft support. A first boom rod(30) is connected to the rotation member to move hingedly around the rotation member. A link assembly(40) is connected to the first boom rod to hinge around the first boom rod. A folding boom rod is connected to the link assembly. A winch(60) is installed in the side of the rotation member. A wire is wound in the winch to support the load.
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