| 摘要 |
<p>The frame has a front (3), central (4), and rear module (5), each with two parallel longitudinal struts (6,7,8). The modules are connected via the struts. Each strut consists of an upper (9,12,15) and a lower flange (10,13,16), and connecting bars (11,14,17). Upper and lower flanges of neighboring modules on each side are connected to each other via overlapping ends, which are screwed together. The flanges have L-profiles, and are formed metal plate parts.</p> |
