Novel periodic fastener structure based on hydraulic viscous damping
A technology of viscous damping and viscous dampers, which can be applied to roads, tracks, buildings, etc., and can solve problems such as vibration weakening, limited technical standards, and rail side wear corrugations
Active Publication Date: 2019-06-11
EAST CHINA JIAOTONG UNIVERSITY
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Problems solved by technology
[0002] In the existing vibration control measures for rail transit such as high-speed rail and subway, vibration-damping fasteners are often used to control the impact on the surrounding environment caused by wheel-rail vibration caused by track irregularities. The technical standards achieved are limited, and sometimes they cannot Meeting the existing vibration and noise control standards will instead increase the vibration of the surrounding environment and fail to meet the requirements of technical standards
What needs to be known is that in the existing vibration control measures, the vibration cannot be completely eliminated, and the vibration can only be weakened by this technology until the effect of the vibration is within our allowable range
[0003] For example, the vibration response of the ground can be reduced theoretically by using double-layer nonlinear fasteners, floating rail fasteners and other vibration-damping fasteners in the subway tunnel, but sometimes it will amplify the ground vibration, especially the floating rail fasteners Double nonlinear fasteners shift ground vibrations to lower frequencies
The expected vibration reduction effect is often not achieved and due to the use of vibration reduction fasteners, the vertical stiffness of the fasteners is smaller than that of traditional fasteners, which reduces the strength of the track and leads to the occurrence of rail side wear corrugation
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specific Embodiment approach 1
[0023] Specific implementation mode one: combine Figure 1-Figure 5 Explain that the purpose of the present invention in this embodiment is to provide a new type of periodic fastener structure based on hydraulic viscous damping. Taking the ballastless track as an example, it is characterized in that it includes a tuned mass buckle spring 1, a spiral spike 2. Elastic washer 3, nut 4, hydraulic viscous damper 5, height adjustment backing plate 6.
[0024] Among them, one end of the tuned quality buckling elastic strip 1 is in contact with the rail waist, and the other end is fixed on the hydraulic viscous damper 5 . Wherein, the tuned mass buckle elastic strip 1 is fixed on the rail waist and the hydraulic viscous damper 5 through spiral spikes 2 and other components.
[0025] Preferably, the tuning quality crimping clip 1 is a new type of clip produced by carbon fiber material. Compared with traditional elastic materials, the stiffness and strength of carbon fiber are due to t...
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The invention provides a novel periodic fastener structure based on hydraulic viscous damping. The structure is characterized by comprising a tuning mass buckling and pressing elastic strip, a screw spike, an elastic washer, a nut, a hydraulic viscous damper, and a heightening cushion plate. The structure is simple in whole, and convenient to manufacture and can be arranged in high-speed trains, subways and rail traffic, the influence, caused by wheel rail vibration caused by unsmooth rails, on the surrounding can be effectively reduced, the ground vibration caused in the train running processis effectively reduced, and the living environment of the nearby residents along the line can be improved.
Description
technical field [0001] The invention relates to a fastener system, which belongs to the technical field of vibration and noise reduction, and in particular to a novel periodic fastener structure based on hydraulic viscous damping. Background technique [0002] In the existing vibration control measures for rail transit such as high-speed rail and subway, vibration-damping fasteners are often used to control the impact on the surrounding environment caused by wheel-rail vibration caused by track irregularities. The technical standards achieved are limited, and sometimes they cannot Satisfying the existing vibration and noise control standards will instead increase the vibration of the surrounding environment and fail to meet the requirements of technical standards. What needs to be known is that in the existing vibration control measures, the vibration cannot be completely eliminated, and the vibration can only be weakened by this technology until the effect of the vibration ...
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IPC IPC(8): E01B9/62E01B19/00
Inventor 张凌张运来杨舟冯青松
Owner EAST CHINA JIAOTONG UNIVERSITY