Mechanical pressure-controlled viscous damper

Abstract

The invention discloses a mechanical pressure-controlled viscous damper, and belongs to the technical field of structural vibration proofing and reducing engineering dampers. Cylinder bodies are filled with the same damping media, and the damping media are sprayed to flow through a damping hole formed in a piston to generate damping force, so that energy of input vibration is consumed. When a structure quickly vibrates under the action of external vibration, in main cylinders of the damper, due to the fact that the damping hole on the piston does not quick spray the media in time or the damping media in a left main cylinder and a right main cylinder are exchanged, the pressure intensity in the left main cylinder and the pressure intensity in the right main cylinder are increased suddenly,and the safety of the damper is possibly threatened. The mechanical pressure-controlled viscous damper is provided with a liquid through pipe, a pressure intensity adjusting device is arranged in theliquid through pipe, pressure relief can be achieved in the working process of the damper, and thus cylinder bursting is prevented. The mechanical pressure-controlled viscous damper is simple in structure, pressure intensity adjusting can be conducted, all parts and accessories can prefabricated and machined in a factory, the damping protection effect is better, the safety factor is higher, structure durability is high, and the mechanical pressure-controlled viscous damper can be used for a long time.

Description

technical field [0001] The invention relates to the technical field of structural anti-seismic and shock-absorbing engineering dampers, in particular to a mechanical pressure-controlled viscous damper. Background technique [0002] Viscous damper Fluid movement, especially when the fluid passes through the orifice, it is made of the principle of throttling resistance. It is a damper related to the speed of piston movement. It has been shown in post-disaster investigations after many major earthquakes , the viscous damper is an effective damping protection device for building structures, which can effectively reduce the seismic response of structures. When an earthquake strikes, the viscous properties lead to an increase in structural damping, and the damper consumes most of the energy to protect the main structure. [0003] Under the action of an earthquake, the two ends of the viscous damper move relative to each other, which drives the piston in the master cylinder to mov...

AI Technical Summary

Problems solved by technology

However, when the movement speed and movement range are large, it is difficult to exchange the damping medium through the damping hole. At this time, the pressure in the main cylinder rises suddenly, and the exchange of the damping medium cannot keep up with the movement of the structure.

At this time, the viscous damper may even be locked. When the viscous damper is locked, it may even cause the cylinder of the viscous damper to explode, or cause the piston rod to bend or the piston rod to be tilted and stuck, eventually causing the viscous damper to be damaged.

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