| 摘要 |
FIELD: radio engineering, communication.SUBSTANCE: telescopic mast includes a movable platform for mounting the payload which can move along the outer surface of the last movable knee and is kinematically linked to a drum through a system of cables and rollers such that it moves from a bottom position in the collapsed state of the telescopic mast to the top section of the last movable knee when the telescopic mast is raised. The knees of the telescopic mast are arranged such that they form an inverted pyramid and on the outer surface of the last movable knee there are guides for movement of the movable platform. In the telescopic mast, the windlass has a pulley and a rope for forced lowering of movable knees of the telescopic mast, said rope being tied by one end to the top movable knee and by the second end to the pulley which lies on the same axis with the drum.EFFECT: fast mounting of a large-size payload at a given height and high reliability of the mast in ice covering conditions.2 cl, 3 dwg |
