| 摘要 |
FIELD: construction.SUBSTANCE: roof umbrella comprises a cap installed above a ventilation shaft channel, and fastening stands for connection by upper ends with the cap, and by lower ends - with the ventilation shaft. Upper ends of fastening stands are arranged with a thread for connection with couplings, which by means of a welded joint are fixed by ends at the lower surface of the cap. Middle parts of fastening stands are made with cones intended for support at the upper ends of bushings, which by means of the welded joint are fixed by side surfaces on side surfaces of the ventilation shaft. Fastening stands are pulled through holes of bushings. Lower ends of fastening stands are made with thread for connection with couplings, which are wound until stop at the lower ends of bushings.EFFECT: it is possible to assemble and disassemble a roof umbrella, provide for reliability of its fixation, simplification and improvement of quality of ventilation shaft channel treatment, observation of safety requirements, possibility to install a roof umbrella both at the stage of construction of new buildings and at the stage of maintenance of already operated buildings.5 cl, 3 dwg |
