| 摘要 |
PROBLEM TO BE SOLVED: To achieve a manual operation to lift/lower a movement object fixed to the distal ends of arms vertically with respect to a reference surface with a simple structure.SOLUTION: A lifting device 10 moves a movement object 13 by lifting/lowering vertically with respect to a horizontal floor surface 14. Distal ends t1 of parallel arms 21U, 21L are vertically moved together with the movement object 13 and, at the same time, proximal ends r1 of the upper arms 21U between the parallel arms 21U, 21L are horizontally moved forward/backward along horizontal guide parts 12a via L shape slide arms 22. Simultaneously, the distal ends of rotation link arms 24 perform circular arcuate rotation since the proximal ends of the rotation link arms 24 are attached to the upper corners with a rotary shaft as a center on the sides of distal ends t1 on the side surfaces of a mobile truck 12. By the rotation, the distal ends of the parallel arms 21U, 21L are restricted so as to be vertically moved along a vertical line passing the centers of attachment shafts in the proximal ends of the rotation link arms 24. In this case, the load of the movement object 13 is reduced by gas springs 25.SELECTED DRAWING: Figure 1 |
