| 摘要 |
<p>The classical pneumatic cylinder actuating the longitudinal guide (3) ensuring sliding of the doors and by means of which the doors (1) are embedded or disembedded in the body (2) of the wagon, simultaneously actuates a shaft (4), a crank (5) being radially integral with said shaft . The free end of the crank hingedly receives a connecting rod (6) that is in turn hingedly connected to the longitudinal guide (3). When the longitudinal guide (3) is being displaced outward, on which the doors (1) can be displaced in closing or opening direction, the crank (5) and the connecting rod (6) form an approximate angle alpha . Said angle progressively decreases during the embedding maneuver of the guide (3) and, consequently, the doors (1), until a limit situation is reached in which a 0 value of said angle is slightly exceeded and the connecting rod (6) operates as blocking and safety element that keeps the doors in the embedded position thereby preventing improper opening of said doors.</p> |
