| 摘要 |
<p>During the production of concrete sleepers for points on the pre-stressed bed, and in order to fix the tube-shaped assembly components at the bottom of the sleeper casing, a recoverable device (60) is incorporated which comprises a trunnion (61) and a nipple (64) removably inserted in the base (62) thereof. The nipple can be inserted in a corresponding hole (2) provided in the base plate (1) said hole determining the position of the small tube (3) in the sleeper; it is provided with an upper stop and a lower stop (65, 70) with which it is anchored in the trunnion (61) or to the base plate (1), and with means enabling rigid fixing of the trunnion (61) to the base plate (1).</p> |
