摘要 |
<p>The rail support (1) has one to five cylindrical holes (5) for the ropes under its centre evenly or unevenly distributed reaching to the end (4) of the support and all inserted along the same traverse direction, perpendicular to the middle axis of the cylindrical tube of said support. The holes are located in solid material pieces preferably made of the same material as the support, which using the guide holes, can be adjusted tight against push or pull stresses in the support tube, making them buckle-proof.</p> |