Bearing type motion decoupling vertical vibration isolation device

Abstract

The invention discloses a bearing type motion decoupling vertical vibration isolation device, which is characterized by comprising a vertical vibration isolation mechanism, a connecting and fixing mechanism, an anti-instability mechanism, a positioning mechanism and a motion decoupling mechanism, wherein the vertical vibration isolation mechanism is a core mechanism, located in the center of the whole device and responsible for providing vertical self-adaptive rigidity characteristics needed by vibration isolation; the whole device plays a role in connection and bearing through the connectingand fixing mechanism, the top and the bottom of the connecting and fixing mechanism are fixed to the structure, and meanwhile, the top, the bottom and the vertical vibration isolation mechanism located in the middle realize the transmission and bearing of a vertical force; the anti-instability mechanism and the positioning mechanism are arranged around an elastic element in the vertical vibrationisolation mechanism and are matched with each other to guarantee the stability of the performance of the vertical vibration isolation mechanism; the motion decoupling mechanism is arranged on the waist portion of the whole device and matched with the connecting and fixing mechanism to achieve decoupling of vertical motion and horizontal motion. The problems of instability and eccentricity of a vertical vibration isolation system are comprehensively solved.

Description

technical field [0001] The application relates to a bearing type motion decoupling vertical vibration isolation device, which belongs to the field of vibration and noise control. Background technique [0002] Vibration isolation technology is a passive vibration control technology. In the past 70 years, vibration isolation technology has been continuously developed, and has been widely researched and applied in the field of vibration control of mechanical equipment and seismic resistance of building structures. The basic principle of vibration isolation is to form a vibration isolation layer with low horizontal stiffness by setting vibration isolation supports and other structures between the vibration-isolated object and the foundation, and reduce the impact of external environmental vibrations and earthquakes on the vibration-isolated object through the filtering effect. impact, or prevent the vibration of the vibration-isolated object from propagating to the ground. [...

AI Technical Summary

Problems solved by technology

The disc springs in series provide negative stiffness, and the coil springs provide positive stiffness. The stiffness of the device is close to zero near the flattened position of the disc springs, so that a lower initial vibration isolation frequency is obtained. However, when the device is actually working, due to the horizontal Relative displacement leads to problems such as lateral instability of coil springs and centroid deviation between disc springs

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