| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To easily move a crane body by increasing strength of a girder while facilitating the vertical movement of the girder by a crane combined with a horizontal girder and a parallel link mechanism. <P>SOLUTION: The horizontal girder is reinforced as a triangular truss, and the parallel link mechanism is composed of two sets, and the truss highest part of the girder is combined as a pin support by sandwiching from both sides by a tip part of the parallel link mechanism. The horizontal girder can be folded up by horizontally revolving in the central vicinity of the girder when moving the crane. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
