| 摘要 |
<p>A supporting head for supporting at least a first and second beam that are suitable for contributing to the temporary support of a superstructure, particularly a floor under construction, the head (1) comprising: - a structure (2) extending upward; - a first slide (3) designed to support the first beam and that is movable along said structure (2) at least between a first and a second position; in the first position, the first slide (3) being located at a greater height than in the second position; - a second slide (4) that is: designed to support the second beam, below the first slide (3) and that is movable along said structure (2) at least between a third and a fourth position; in the third position, the second slide (4) being located at a greater height than in the fourth position; - means (5) for supporting the first slide in the first position; - means (6) for supporting the second slide (4) at least in the third position; the head being able to take on a configuration wherein the means (5) for supporting the first slide performs its support function and the means (6) for supporting the second slide is disengaged. This permits a shifting of the second slide (4) from the third to the fourth position, even in the case in which the first slide (3) remains fixed in the first position.</p> |
