| 摘要 |
1. Formwork device for producing modular structural units for constructing reservoirs and, more particularly, prefabricated burial vaults, the said units having the shape of parallelepipeds which are open at at least one of their base faces, and the said device comprising a framework (11) to which a rectangular horizontal panel (12) is secured, four vertical panels (13a-13d), which are hinged to the four sides of the said horizontal panel (12), and a mould (14) which is in the shape of a truncated pyramid with a rectangular base, is supported by the said horizontal panel and surrounded by the said vertical panels, this device being characterised in that it comprises jack means (15a, 16a-15d, 16d) for moving the said vertical panels (13a-13d) and means for enabling the said device to rotate about its own axis, these means being formed by a central longitudinal shaft (19) which is mounted on the framework (11) and held between the two arms of a support (18) which is in the form of a stirrup and is provided with a gripping means (18a) so that it can be raised by a lifting device. |
