An inertial rotation vertical vibration isolation device

Abstract

The invention provides an inertia rotation type vertical vibration isolation device and relates to a vertical vibration isolation device based on inertia and a damping material. The inertia rotation type vertical vibration isolation device comprises a metal spring, an inertia horizontal rotation part, a limiting device, a bottom board and a top board. The inertia horizontal rotation part comprisesa rotary shaft, a rotary disc and rolling wheels. The spring is installed in the rotary shaft firstly, meanwhile, the spring and the rotary shaft are fixedly connected to the top board, then the rotary shaft is sleeved with the rotary disc, and the vertical displacement of the rotary disc is limited by the limiting device; and finally, the lower portion of the spring and a lower base are connected to form a rotation type vertical vibration isolation support. Vertical vibration is converted into rotation of the rotary disc, rotation of the rotary disc is damped, the rotary disc is connected with the metal spring in parallel to form a vertical vibration isolation system, a vertical vibration isolation purpose is achieved, and the vibration attenuation effect of the device is much better than that of an existing steel spring vibration isolator. The inertia rotation type vertical vibration isolation device can be widely applied to the special vibration attenuation section with the high railway traffic vibration and noise reduction requirement.

Description

technical field [0001] The invention relates to an inertia-based rotary vertical vibration isolation device, which belongs to the field of vibration and noise control. Background technique [0002] With the rapid development of social economy and the continuous expansion of cities, urban traffic congestion is becoming more and more serious, and rail transit has become an important means to solve urban traffic congestion. At present, more than 20 cities in China have or plan to build subway rail lines, with a total investment of more than 600 billion yuan. When a rail transit line passes through a populated area, its long-term operation will inevitably cause vibration and noise pollution. Vibration has been considered as one of the seven major public hazards in the world. Vibration and noise pollution will inevitably affect the environment on or around the rail transit line It may cause adverse effects on the health of residents, or it may also pose a threat to the precision...

AI Technical Summary

Problems solved by technology

However, when the excitation frequency of the running train is equal to or close to the natural frequency of the floating slab track structure itself, the vibration cannot be effectively weakened, and sometimes the phenomenon of vibration amplification will appear, so the application has certain limitations.

Images