| 摘要 |
<p>A rigged truck comprises runways (4) defined on the truck platform (3) and extending lengthwise thereto dose to a corresponding truck side, a carriage (5) mounted for movement along said runways (4), a tower (17) mounted rotatably on said carriage (5) and having an operator's seat (23) at the top, a main support (35) which is carried, through a horizontal axis articulated parallelogram (28-33), cantilever-fashion on said tower (17) and is movable in a vertical direction, a secondary support (40) mounted rotatable about a vertical axis on said main support (35), an arm mounted at one of its ends oscillably on said secondary support about a horizontal axis lying substantially parallel to the plane containing said articulated parallelogram (28-33), and a boom (48) mounted oscillably at the other end of said arm and being terminated with a tool end (52).</p> |
