| 摘要 |
<p>The insert has two main side parts (2) to be pressed between a sleeper screw and a timber sleeper (100). Each side part has a tab (9) whose inner surfaces are arranged in the extension of concave surfaces. A central part (3) is connected to the two side parts. The central part is disposed perpendicularly to the side parts, after installation of the insert in a hole (101) of the sleeper. The hole is deposited with a hardenable fluid product such as a charged epoxy resin. The central part is dimensioned to seal a broad portion of the section of the hole.</p> |
