| 摘要 |
The facing edges of the hatches (2) locate tighly against one another in the closed position, and each hatch is pivotably fastened to a pair of secondary link components (23) connected to manoeuvring components (9) extending along the longitudinal direction of the truck (1) and movable vertically. The ends of the manoeuvring are displaceable in opposite directions in the longitudinal direction of the truck, and this in vertical guides (8) in a plane at right-angles to the pivoting plane of the hatches. The articulation points of the first and second links (5,23) permit movement of the manoeuvring components from a lower end position, in which the hatches are closed, upwards to produce opening of the hatches. Conversely, movement of the manoeuvring components from an upper end position in which the hatches are open causes the hatches to close. |
