A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Quasi-zero stiffness vibration reduction fastener structure based on sliding block connecting rod
The invention discloses a quasi-zero stiffness vibration reduction fastener structure based on a sliding block connecting rod. The quasi-zero stiffness vibration reduction fastener structure comprises a supporting block, a sliding block connecting rod negative stiffness damping component and a vertical viscous damper. The supporting block is arranged in a reserved cavity of the track roadbed slab; the sliding block connecting rod negative stiffness damping component is arranged in the reserved cavity and connected with the side face of the supporting block. The vertical viscous damper is arranged at the bottom of the supporting block. The sliding block connecting rod negative stiffness damping component and the vertical viscous damper form a positive and negative stiffness mechanism, the positive and negative stiffness mechanism is connected in parallel to form a quasi-zero stiffness vibration isolation structure, the quasi-zero stiffness vibration isolation structure has good nonlinear stiffness, flexible quasi-zero stiffness, zero stiffness and negative stiffness can be provided, and the vibration isolation effect is good. The low-frequency vibration reduction device has low dynamic stiffness to reduce the inherent frequency, expand the vibration isolation frequency range and meet the low-frequency vibration reduction requirement, and also has high static stiffness to reduce static displacement, so that the effect of reducing the displacement while reducing the vibration noise of the steel rail is achieved.
本发明公开了一种基于滑块连杆的准零刚度减振扣件结构，包括支撑块、滑块连杆负刚度阻尼构件和竖向粘滞阻尼器；支撑块设置在轨道道床板的预留空腔内；滑块连杆负刚度阻尼构件设置于预留空腔内并与支撑块的侧面连接；竖向粘滞阻尼器设置于支撑块的底部。本发明采用滑块连杆负刚度阻尼构件和竖向粘滞阻尼器组成正负刚度机构组成正负刚度机构，该正负刚度机构并联形成准零刚度隔振结构，具有良好的非线性刚度，可以提供灵活的准零刚度、零刚度和负刚度，具有低动刚度以减小固有频率扩大隔振的频率范围达到低频减振要求的同时，还有高静刚度以减小静位移，从而达到降低钢轨的振动噪声的同时减少位移的效果。
Quasi-zero stiffness vibration reduction fastener structure based on sliding block connecting rod
The invention discloses a quasi-zero stiffness vibration reduction fastener structure based on a sliding block connecting rod. The quasi-zero stiffness vibration reduction fastener structure comprises a supporting block, a sliding block connecting rod negative stiffness damping component and a vertical viscous damper. The supporting block is arranged in a reserved cavity of the track roadbed slab; the sliding block connecting rod negative stiffness damping component is arranged in the reserved cavity and connected with the side face of the supporting block. The vertical viscous damper is arranged at the bottom of the supporting block. The sliding block connecting rod negative stiffness damping component and the vertical viscous damper form a positive and negative stiffness mechanism, the positive and negative stiffness mechanism is connected in parallel to form a quasi-zero stiffness vibration isolation structure, the quasi-zero stiffness vibration isolation structure has good nonlinear stiffness, flexible quasi-zero stiffness, zero stiffness and negative stiffness can be provided, and the vibration isolation effect is good. The low-frequency vibration reduction device has low dynamic stiffness to reduce the inherent frequency, expand the vibration isolation frequency range and meet the low-frequency vibration reduction requirement, and also has high static stiffness to reduce static displacement, so that the effect of reducing the displacement while reducing the vibration noise of the steel rail is achieved.
本发明公开了一种基于滑块连杆的准零刚度减振扣件结构，包括支撑块、滑块连杆负刚度阻尼构件和竖向粘滞阻尼器；支撑块设置在轨道道床板的预留空腔内；滑块连杆负刚度阻尼构件设置于预留空腔内并与支撑块的侧面连接；竖向粘滞阻尼器设置于支撑块的底部。本发明采用滑块连杆负刚度阻尼构件和竖向粘滞阻尼器组成正负刚度机构组成正负刚度机构，该正负刚度机构并联形成准零刚度隔振结构，具有良好的非线性刚度，可以提供灵活的准零刚度、零刚度和负刚度，具有低动刚度以减小固有频率扩大隔振的频率范围达到低频减振要求的同时，还有高静刚度以减小静位移，从而达到降低钢轨的振动噪声的同时减少位移的效果。
Quasi-zero stiffness vibration reduction fastener structure based on sliding block connecting rod
一种基于滑块连杆的准零刚度减振扣件结构
LIU QUANMIN (author) / LUO GUOZHENG (author) / SONG LIZHONG (author) / LUO WENJUN (author) / GONG KAI (author) / FENG YULIN (author) / YE LING (author)
2024-07-09
Patent
Electronic Resource
Chinese
IPC:
E01B
PERMANENT WAY
,
Gleisoberbau
Quasi-zero stiffness vibration reduction track structure based on bionic structure
| European Patent Office | 2024
| European Patent Office | 2023
Vibration reduction fastener self-locking connecting mechanism and using method thereof
| European Patent Office | 2023