Damping-variable friction damper capable of preventing lateral buckling

Abstract

The invention relates to a damping-variable friction damper capable of preventing lateral buckling. The damping-variable friction damper comprises a friction plate with clamping slots, a friction plate with an arc surface, a bottom friction plate , precompressed bolts and a pressure converter; the friction plate with the arc surface, the friction plate with the clamping slots and the bottom friction plate are connected through four precompressed bolts; the friction plate with the arc surface is positioned on the upper part, wherein the arc surface is downward; the friction plate with the clamping slots is positioned in the middle; U-shaped wings on both sides of the friction plate with the clamping slots and the arc surface of the friction plate with the arc surface constitute a middle sealed space; the pressure converter is arranged in the sealed space, is fixed on the friction plate with the clamping slots and moves together with the friction plate with the clamping slots; the bottom friction plate is positioned on the lower part; at least two friction surfaces are formed by means of the three friction plates; the precompressed bolts penetrate through the two clamping slots of the friction plate with the clamping slots, so that the friction plate with the clamping slots can freely slide between the friction plate with the arc surface and the bottom friction plate. According to the damping-variable friction damper disclosed by the invention, the pressure converter is additionally arranged in the friction damper, and the effect of varying the friction damping by means of the vertical pressure of a spring is achieved.

Description

technical field [0001] The invention relates to a variable damping friction damper for preventing lateral buckling. Background technique [0002] At present, there are many known passive damping devices used in the field of shock absorption (vibration), such as viscous dampers, viscoelastic dampers, metal dampers, SMA dampers, BRB, TMD, TLD, etc., and of course friction damping Different from damping devices such as viscous dampers and viscoelastic dampers, friction dampers lack the type of variable damping devices, and the scope of application and damping range are limited, and friction dampers are generally produced by sliding friction in the direction of friction plate extension. Damping, too long friction plates may buckle during the stress process, affecting the performance; from the above several angles, the present invention develops a friction damping device with variable damping and anti-lateral buckling. Contents of the invention [0003] Aiming at the defects e...

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Problems solved by technology

[0002] At present, there are many known passive damping devices used in the field of shock absorption (vibration), such as viscous dampers, viscoelastic dampers, metal dampers, SMA dampers, BRB, TMD, TLD, etc., and of course friction damping Different from damping devices such as viscous dampers and viscoelastic dampers, friction dampers lack the type of variable damping devices, and the scope of application and damping range are limited, and friction dampers are generally produced by sliding friction in the direction of friction plate extension. Damping, the too long friction plate may buckle during the stress process, which will affect the performance; from the above several angles, the present invention develops a friction damping device with variable damping and anti-lateral buckling

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