| 摘要 |
<p>The assembly has numerous support tubes(1) each with a groove(4) holding a contact rail(5) parallel to the tube. The tubes are connected together by junction pieces(2). The contact rails are connected together by connection pieces(7). The junction pieces are enclosed by the connection pieces. Each connection piece comprises at least two parts(9, 10) which can be removed from different sides of the connection piece and fixed to one another. One part(10) of the connecting piece has a method(8, 11, 12) of fixing the support tubes. The two parts of the connection piece are shaped like hollow hemispheres and are held together by locating pins and holes and by screws.</p> |
