| 摘要 |
The invention relates to a device for overload protection of a structure. According to the invention, the device comprises at least one resilient multi-layer packet (I) consisting of some zones (A, B and C), i.e. a central zone, an internal peripheral zone and a peripheral zone, respectively, where the central zone (A) consists of some resilient discs (1), preferably made of spring steel, lubricated or not, flat or curved, each provided with a central orifice (a), having an external, preferably circular, outline (a'), the internal peripheral zone (B) consists of some other resilient discs (2) provided each with a central orifice (b) corresponding with the orifice (a) and concentrically aligned therewith, which has an external outline ( c) in the shape of a truncated cone, with an angle, at the cone base, of preferably 10...60°, the first disc (2) of this zone (B) being in contact with the disc (1) of the zone (A) on a surface which is, preferably, 2...3 times smaller than the surface of the said disc (1), the thickness of the discs (2) ranging between 10%...100% of the thickness of the discs (1) and being in proportion with the external diameter of the discs (2), and the peripheral zone (C) consists of some other resilient discs (3), externally aligned with the discs (1) of the central zone (A), and forming inside an outline (d) in the shape of a truncated cone, with an angle, at the cone base, of preferably 5...50°, the first disc (3) of this zone (C) being in contact with the disc (1) of the zone (A) on a surface which is, preferably, 3...4 times smaller than the surface of the said disc (1), the thickness of the discs (3) ranging between 10%...100% of the thickness of the discs (1) and being in inverse ratio with the internal diameter of the discs (3), where one, two or more packets (I) are mounted on a central shaft (4) which passes through the above-mentioned orifices (a and b) whereto some top eyelets (5), provided or not with some through holes (e), are fixed. |
