Damper

Abstract

The invention relates to a vibration-absorbing dissipative damper, which comprises a cylinder body and a moving body. The moving body is partly located in the cylinder. At least one cavity extending along the shaft is disposed in the cylinder. Viscous damping liquid is filled in the cavity and formed damping cavity. The moving body is made up of moving vanes disposed in the damping cavity. A shearing cavity is formed via the moving vanes and the damping cavity wall.

Description

Technical field [0001] The invention relates to a vibration control device, a damper, in particular to a shock absorber of a vehicle suspension system and a vibration reduction and energy consumption damper of a building structure. Background technique [0002] Damper is a widely used basic element for vibration control, used for vibration reduction, buffering, and energy consumption of machinery, vehicles, bridges, and building structures. [0003] The common damper is a hydraulic cylinder type. The piston moves relative to the cylinder only in the axial direction. It is called a single-axis damper. It consists of a movable body, a movable body rod, a cylinder body and a seal. The movable body is generally cylindrical. The movable body is provided with a number of small holes or a proper radial clearance is left between the cylinder body. The movable body divides the cylinder into two movable body cavities. The movable body cavity is filled with hydraulic oil or viscous liquid w...

AI Technical Summary

Problems solved by technology

However, due to structural reasons, it has inherent defects: 1) Due to the static friction and sliding friction between the seal and the piston rod, and the piston and the damping cylinder, the starting resistance is relatively large, and the damping force has a poor correlation with the speed when the amplitude is small. , resulting in complex theoretical calculations and large errors; 2) A tight seal must be used, but the seal is easy to wear or age. Once the seal fails, the pressure difference cannot be established, and the damping performance will be lost rapidly; 3) The structure of the parts is complex and the number is large 1. The processing precision is high, so the cost is high; 4) The damping performance is sensitive to the processing precision and the reliability of the parts. Once the important parts such as valves fail, the damping performance will drop rapidly or fail; 5) When the damping liquid is throttling through small holes, local Due to high-pressure shearing, the instantaneous heating and temperature rise are high, and it is easy to age under long-term action, resulting in the failure of the damper; 6) The sediment and wear particles in the damping liquid affect the damping parameters and accelerate the damage of the damper; due to the above reasons, this form of Shock absorbers, except for high-quality brand-name products, generally have a low lifespan. Low-end automobile shock absorbers are even replaced every six months, causing a lot of waste of resources and polluting the environment.

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