| 摘要 |
One telescope section (20,30) within the space (200,300) has a bar (27) or two bars in parallel (27,29) to form additional spaces (202,204). Additional bars can also be fitted to give more spaces with the bars forming a continuous wall along the telescoping section. Sections (20,30) each have two horizontal and two vertical (26,28; 36,38) bars which together form a box profile telescoping boom format. The sections (20,30) are linked by power lines, chains and rope systems laid likewise in the additional space. The box profile should have rounded corners. |
