Friction damper capable of achieving variable damping force output

A friction damper and variable damping technology, used in bridge parts, building components, bridges, etc., can solve the problems of inability to meet the requirements of shock absorption, energy dissipation, and single damping force output, and achieve strong energy dissipation capacity and stable hysteresis. Curve, uniform force effect

Active Publication Date: 2019-05-31
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

[0004] In order to solve the problem that the traditional friction damper has a single damping force output and cannot meet the requirements of shock absorption and energy dissipation under different intensity earthquakes, the invention provides a friction damper that can realize variable damping force output

Method used

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  • Friction damper capable of achieving variable damping force output
  • Friction damper capable of achieving variable damping force output
  • Friction damper capable of achieving variable damping force output

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Embodiment Construction

[0024] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0025] The invention provides a friction damper capable of realizing variable damping force output.

[0026] Such as figure 1 As shown, the damper includes sliding plate 1, friction plate 2, fixed plate 3, core plate 4, butterfly spring 5, pre-tightening bolt 6 and pre-tightening nut 7; fixed plate 3, sliding plate 1 and friction plate 2 are all Used in pairs, the pre-tightening bolts 6 and pre-tightening nuts 7 are symmetrically installed, and the pre-tightening nuts 7 and the fixing plate 3 are directly provided with butterfly springs 5; two friction plates 2 are embedded in the upper and lower sides of the core plate 4 to be fixed, and the core plate 4 is placed between two sliding plates 1, and the contact surface between sliding plate 1 and frictio...

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Abstract

The invention provides a friction damper capable of achieving variable damping force output, and belongs to the technical field of damping devices. The damper comprises sliding plates, friction plates, fixed plates, a core plate, a butterfly spring, pre-tightening nuts and pre-tightening bolts. The fixed plates, the sliding plates and the friction plates are all used in pairs, and are symmetrically mounted through the pre-tightening nuts and the pre-tightening bolts. The damper can generate certain damping force under the action of the pretightening force of the bolts; when the damper bears anexternal load, straight sections of the sliding plates make contact with straight sections of the fixed plates in advance and slide, and at the moment, the contact surfaces of the sliding plates andthe friction plates achieve friction energy consumption under the action of constant pressure. The characteristic that the damper outputs variable damping force along with the change of the external load can be achieved, and the damper can adapt to seismic loads under different intensities. The damper has the advantages of being symmetrical in structure, easy to install, convenient to use and capable of bearing offset loads, and the structure has a stroke limiting function.

Description

technical field [0001] The invention relates to the technical field of damping devices, in particular to a friction damper capable of realizing variable damping force output. Background technique [0002] Earthquake, as a destructive natural disaster, poses great danger to the survival and development of human beings. For a long time, countless houses, bridges and other buildings have been destroyed by earthquakes, and the loss of life and property caused by earthquakes is also inestimable. As an important component in the shock-absorbing structure, the damper has important research value. [0003] The traditional anti-seismic design idea is to emphasize the strengthening of the structure's stiffness and deformation capacity to resist the earthquake, relying on the plastic deformation of its own structural parts to dissipate the seismic energy. However, the accumulation of plastic deformation inevitably causes a certain degree of structural damage. At present, the working...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/98E01D19/00E04H9/02
Inventor 刘国勇贺国徽刘海平朱冬梅
Owner UNIV OF SCI & TECH BEIJING
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