Self-feedback control friction damper

Abstract

The invention discloses a self-feedback control friction damper and belongs to the technical field of dampers. The damper comprises an outer shell and a piston body which is arranged in the outer shell, and is characterized in that the outer shell is provided with a rectangular inner cavity with one closed end and one open end; an inner side wall at the closed end is provided with an actuating piston; the piston body is of a hollow rectangular structure, one end of the piston body is provided with an end cover with an axial through hole, and the other end of the piston body is provided with aboosting air chamber in which gas is filled in a seal assembling mode; the actuating piston passes through the axial through hole on the end cover; at least one outer side wall of the piston body is provided with a friction plate; the friction plate and the outer side wall of the piston body are connected through at least one piston pin; the pin hole of the piston pin is communicated with the inner cavity of the piston body; and the inner cavity of the piston body is filled with a liquid substance. The damper provided by the invention has the advantages of simple and reasonable structure and high energy consumption capability, the damp force is regulated according to the variation of the amplitude, and the damper is especially suitable for the environments with complex working conditions and vibration conditions.

Description

technical field [0001] The invention belongs to the technical field of dampers, and in particular relates to a friction damper which can adjust the magnitude of the damping force according to the vibration source amplitude and can use the vibration source signal for feedback control. Background technique [0002] Vibration is a physical phenomenon that widely exists in buildings and mechanical equipment. In the design and manufacture of electromechanical equipment, electronic instruments and offshore platforms that work normally in complex environments, vibration phenomena are inevitable. The harms caused by it generally include: destroying the strength of the mechanism; destroying the normal working conditions of instruments and meters, and even causing the malfunction of the instrument; causing structural noise and deteriorating the working environment of the staff. Therefore, vibration control is crucial in the design of machinery and structures. [0003] Vibration contr...

AI Technical Summary

Problems solved by technology

The disadvantage of the current common friction damper is that it can only provide a constant positive pressure, and whether the damper is working or not, the positive pressure always exists; moreover, the existing friction damper cannot realize feedback control, thus reducing the sensitivity of the energy dissipation device

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