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A platform for research: civil engineering, architecture and urbanism
Composite damper for reducing vibration noise of steel rail
The invention relates to the technical field of steel rail vibration and noise reduction equipment, in particular to a composite damper for reducing vibration noise of a steel rail, which comprises an elastic damping layer connected to a rail web of the steel rail and a folding constraint piece connected to the outer side of the elastic damping layer, and a folding cavity is formed between the folding constraint piece and the elastic damping layer. The multiple folding cavities are evenly formed in the advancing direction of the track and the vertical direction of the track, and liquid particle damping assemblies are arranged in the folding cavities and comprise particle damping shells, damping particles and damping liquid, and the damping particles and the damping liquid are located in the particle damping shells. The liquid particle damping assembly and the elastic damping layer jointly form a tuned mass damping unit, the two side portions and the lower portion of the steel rail are connected with vibration reduction fasteners, and the vibration reduction fasteners abut against the outer side ends of the folding type restraining pieces. According to the composite damper in the scheme, the high-frequency damping noise reduction effect can be improved, the vibration reduction frequency range is expanded, and the energy loss is improved.
本发明涉及钢轨减振降噪设备技术领域，具体涉及一种用于降低钢轨振动噪声的复合阻尼器，包括连接于钢轨轨腰上的弹性阻尼层和连接于弹性阻尼层外侧的折叠式约束件，折叠式约束件与弹性阻尼层之间形成折叠腔，折叠腔包括沿轨道的行进方向和轨道的垂向均匀设置的多个，折叠腔内设有液体颗粒阻尼组件，液体颗粒阻尼组件包括颗粒阻尼外壳和位于颗粒阻尼外壳内的阻尼颗粒和阻尼液，液体颗粒阻尼组件与弹性阻尼层共同形成调谐质量阻尼单元，钢轨的两侧部和下部连接有减振扣件，减振扣件抵接于折叠式约束件的外侧端。本方案中的复合阻尼器可提高高频阻尼降噪效果，扩大减振频率范围，提高能量损耗。
Composite damper for reducing vibration noise of steel rail
The invention relates to the technical field of steel rail vibration and noise reduction equipment, in particular to a composite damper for reducing vibration noise of a steel rail, which comprises an elastic damping layer connected to a rail web of the steel rail and a folding constraint piece connected to the outer side of the elastic damping layer, and a folding cavity is formed between the folding constraint piece and the elastic damping layer. The multiple folding cavities are evenly formed in the advancing direction of the track and the vertical direction of the track, and liquid particle damping assemblies are arranged in the folding cavities and comprise particle damping shells, damping particles and damping liquid, and the damping particles and the damping liquid are located in the particle damping shells. The liquid particle damping assembly and the elastic damping layer jointly form a tuned mass damping unit, the two side portions and the lower portion of the steel rail are connected with vibration reduction fasteners, and the vibration reduction fasteners abut against the outer side ends of the folding type restraining pieces. According to the composite damper in the scheme, the high-frequency damping noise reduction effect can be improved, the vibration reduction frequency range is expanded, and the energy loss is improved.
本发明涉及钢轨减振降噪设备技术领域，具体涉及一种用于降低钢轨振动噪声的复合阻尼器，包括连接于钢轨轨腰上的弹性阻尼层和连接于弹性阻尼层外侧的折叠式约束件，折叠式约束件与弹性阻尼层之间形成折叠腔，折叠腔包括沿轨道的行进方向和轨道的垂向均匀设置的多个，折叠腔内设有液体颗粒阻尼组件，液体颗粒阻尼组件包括颗粒阻尼外壳和位于颗粒阻尼外壳内的阻尼颗粒和阻尼液，液体颗粒阻尼组件与弹性阻尼层共同形成调谐质量阻尼单元，钢轨的两侧部和下部连接有减振扣件，减振扣件抵接于折叠式约束件的外侧端。本方案中的复合阻尼器可提高高频阻尼降噪效果，扩大减振频率范围，提高能量损耗。
Composite damper for reducing vibration noise of steel rail
一种用于降低钢轨振动噪声的复合阻尼器
2024-09-06
Patent
Electronic Resource
Chinese
IPC:
E01B
PERMANENT WAY
,
Gleisoberbau
Method for improving damping performance of steel rail damper, and steel rail damper
| European Patent Office | 2021