Piston type particle damper

Abstract

The invention belongs to the field of earthquake resistance, shock absorption and wind resistance technologies of engineering structure, and relates to a piston type particle damper which comprises an outer shell, a toggling wheel, particles, a piston rod, a shunt cone, a rear one-way hinge and a front one-way hinge. The toggling wheel and the particles are arranged in the outer shell. The piston rod penetrates through one end of the outer shell and is fixedly connected with the toggling wheel in the outer shell. The toggling wheel comprises a toggling ring and toggling rods, wherein the toggling rods are evenly arranged along the toggling ring in the circumferential direction, and are evenly fixed on a cylindrical surface of the end portion of the piston rod. The shunt cone is arranged on the head portion of one end, stretching into the outer shell, of the piston rod, the front one-way hinge is arranged at the other end, extending out of the outer shell, of the piston rod, and the rear one-way hinge is arranged at the other end of the outer shell. When the piston type particle damper works, the piston rod drives the toggling wheel to move front and back, and the toggling ring and the toggling rods toggle the particles to dissipate energy through collision, extrusion and friction between the particles. The piston type particle damper integrates the advantages of a displacement related type damper and a speed related type damper.

Description

technical field [0001] The invention relates to a piston-type particle damper utilizing particle friction and collision energy consumption, and belongs to the technical field of anti-seismic, shock-absorbing and wind-resistant engineering structures. Background technique [0002] Viscous dampers and friction dampers are commonly used energy dissipation and shock absorbing devices in engineering. The viscous damper is made according to the principle of fluid motion, especially when the fluid passes through the orifice, it will produce viscous resistance, and it belongs to the speed-dependent damper. The friction damper is composed of metal friction plates under a certain preload, forming a mechanism that can generate sliding and frictional forces, and dissipate energy through sliding friction, which belongs to the displacement-related damper. [0003] The effectiveness of the viscous damper requires a certain speed as a guarantee. When the speed is too small, the viscous res...

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Problems solved by technology

[0003] The effectiveness of the viscous damper requires a certain speed as a guarantee. When the speed is too small, the viscous resistance of the liquid is small, and it is difficult to obtain a better shock absorption effect. In addition, the influence of the external temperature on the energy dissipation effect of the viscous damper is also Larger, when the temperature is higher, the damping effect will be greatly reduced

In the friction damper, the resistance depends on the pre-tightening force, the resistance cannot be changed during the working process, and it cannot adapt to different earthquakes. In addition, as the service life increases, the friction coefficient will decrease, which will also affect the effect of the friction damper

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