Damping force controllable viscous damper and intelligent monitoring and control system of damping force controllable viscous damper

Abstract

The invention discloses a damping force controllable viscous damper and an intelligent monitoring and control system of the damping force controllable viscous damper. The damper comprises a cylinder body, a piston and a piston rod, wherein the interior of the cylinder body is divided into a main cylinder and an auxiliary cylinder; the main cylinder is filled with a damping medium formed by polyethylene glycol and nanoscale silica particles; the silica particles are suspended and dispersed in polyethylene glycol in a fluid state; the piston is arranged in the main cylinder and can move back and forth in the axial direction of the main cylinder so as to drive the piston rod connected with the piston to move together; one end of the piston rod penetrates through a damping hole formed in the piston; and the other end of the piston rod extends into the auxiliary cylinder. The invention further discloses the corresponding intelligent monitoring and control system. With the adoption of the damper and the system, the damping force of the damper can be effectively controlled, and the operating state of the damper can be detected, fed back and adjusted in real time, so that the safety of an engineering structure is better protected.

Description

technical field [0001] The invention belongs to the technical field of structural shock absorption, and more specifically relates to a viscous damper with controllable damping force and an intelligent monitoring and control system thereof. Background technique [0002] A damper is a device that provides movement resistance to consume movement energy. Since the 1970s, damping technology has been gradually used in structural engineering such as buildings, bridges, and railways, and has achieved rapid development. At present, dampers are mainly divided into spring dampers, hydraulic dampers, rotary dampers, viscous dampers, etc. Among them, the working principle of viscous dampers is based on fluid movement, especially when fluid passes through an orifice. The damper made of the effect of resistance. Because of its indeterminate stiffness, good weather resistance, and the ability to reduce both structural stress and reaction displacement, it is widely used in high-rise buildi...

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Problems solved by technology

Although silica gel has good viscosity-temperature resistance, moisture-proof and electrical insulation, and small compression deformation, it has defects such as poor temperature stability; silicone oil has good heat resistance, oxidation resistance, and low temperature resistance, and is not volatile and compression-resistant. Strong force means small tension and chemical stability, so it is currently the mainstream viscous energy-dissipating material in the industry

[0004] However, the working speed of the viscous damper in the prior art is pre-designed, once the vibration of the structural engineering is greater than the design value of the viscous damper, it may cause damage to the damper and affect the safety of the engineering structure. In addition, when the viscous damper is installed on the structural engineering, the vibration force and displacement of the engineering structure cannot be effectively monitored, so that the vibration state of the engineering structure cannot be monitored and monitored in a timely and effective manner. Corresponding control

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