| 摘要 |
The present invention provides an arrangement structure of a door type crane to lower the reduction ratio and to improve the overall internal force. To achieve this, the arrangement structure of a door type crane arranges a plurality of cranes (3, 4) adjacent to each other in a traveling direction on a different orbit (17) to make the bottom of a leg part of a door type crane in one side protrude downward from a girder of a door type crane in the other side and the girders (10, 13) come near to and in contact with each other. Therefore, a wind load (W) applied to the structure of the crane as a gap (b) between the girders and the reduction ratio (η) are reduced. In addition to this, the bottom (9a, 12a) of the leg part (9, 12) is fixated to the ground to make the girders come in contact with each other and to secure the plurality of door type cranes, thereby applying a wind load to the integrated door type cranes and concentrating the internal force. |
