Spring damping vibration isolator

Abstract

The invention belongs to the field of vibration control, and particularly relates to a spring damping vibration isolator for isolating vibrations. The spring damping vibration isolator comprises an upper support plate, an elastic element and a lower support plate, wherein the elastic element is positioned between the upper support plate and the lower support plate; a damping cylinder is arranged below the lower support plate; a liquid damping material is arranged in the damping cylinder; a movable body linked with the upper support plate or lower support plate is arranged in the damping cylinder; and at least part of the movable body is arranged in the liquid damping material. In the invention, the damping cylinder and the movable body are independently arranged under the elastic element, thereby greatly enhancing the system damping, and overcoming the defect of limited contact area of spring and damping material restricted by the space in the damping cylinder in the prior art; and the invention strengthens the sealing performance, thereby greatly enhancing the waterproof property of the vibration isolator. The invention has the advantages of simple structure, stable property and strong applicability, can be widely used for damping in the fields of machinery, rail transportation, bridges, architectural structures and the like, and has obvious economic and social benefits.

Description

technical field [0001] The invention belongs to the field of vibration control, and specifically relates to a vibration isolation device, in particular to a spring damping vibration isolator that can be widely used for vibration isolation of rail floating slab track beds, equipment foundations, pipelines, building structures and other large floating components . Background technique [0002] In recent years, due to the improvement of people's awareness of environmental protection, higher requirements have been put forward for the control of vibration and noise in production and life. Especially for areas with serious vibration and noise pollution such as rail transit, large-scale forging and stamping equipment, how to isolate vibration has become an engineering challenge. An important issue that must be considered in the process of project approval, design and construction. Among the existing vibration isolation technologies and products, there is a spring damping vibration...

AI Technical Summary

Problems solved by technology

However, the actual application proves that due to the harsh environment of some application places, rubber sleeves and clamps are used for sealing, which cannot meet the needs of waterproofing. Due to short-term heavy rainfall and other reasons, water ingress in the damping cylinder leads to denaturation or leakage of the damping material. Occurs from time to time, which seriously affects the normal use of the vibration isolator, not only affects the vibration isolation effect, but sometimes even poses a safety hazard

[0003] On the other hand, the pipeline vibration isolator widely used in pipeline support, commonly known as pipeline vibration damping bracket or pipeline vibration damping hanger, although the damper is connected in parallel with the spring, and the radial size is compact, the damper used so far is all It is a hydraulic damper. The hydraulic damper generally works through the principle of small hole throttling. There are two pressure chambers separated by the piston and connected through small holes. The chamber is filled with low viscosity, but pressure and heat resistant hydraulic oil. , the movement of the piston during work causes a pressure difference between the two chambers, and the two chambers bear the pressure alternately. There must be no air in the chamber. Both the piston and the piston rod need to be strictly sealed. Under vibration conditions, the sliding seal will be very sensitive due to friction Fast failure, the damper will fail after the seal fails, so the life is short, and frequent maintenance is required to replace the seal

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