Киевский Национальный Университет Технологий И Дизайна
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A screw joint has parts that are connected, each of those has opening, bolt installed to openings of the parts, nut that has working, mostly in hexagonal form, and supplementary cylindrical parts placed one over another coaxially, screwed on the bolt. The nut is additionally equipped with at least two steel spring split rings fit on supplementary cylindrical part, at that the last one has at least four radial slots arranged in its whole length.
Protection base for a bulk cargo, especially segments of concrete towers, with said base including a base plate to accommodate one end of the bulk cargo; and a clamping unit for removable fastening at the first end of the bulk cargo; tower segment of a wind power installation; and use of a protection base.