| 摘要 |
A first support leg has one outer end, adjustably secured to the mast lower end, and a second outer end adjustably secured on the earth frame. A second support leg has one outer end, adjustably secured to an adjustment point, spaced from mast lower end, while a leg second end is adjustably fastened on the earth frame, spaced from outer end of first leg. The four adjustment shafts of the four adjustment joints are mutually parallel. Each support leg consists of two co-acting halves, which are of identical shape and are assembled in a mutual mirror-type manner. |
