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A platform for research: civil engineering, architecture and urbanism
Self-energy-harvesting track fastener based on flexible piezoelectric structure
The invention discloses a self-energy-harvesting track fastener based on a flexible piezoelectric structure, and belongs to the field of piezoelectric energy harvesting structures. According to the invention, the flexible cushion block is designed, the beam type piezoelectric ceramic is pasted on the buffer beam structure of the flexible cushion block, meanwhile, the disc-shaped piezoelectric energy harvesting structures are embedded in the cushion block, and different energy harvesting structures have different resonant frequencies, so that the track has the energy harvesting structures under different vibration frequencies to reach an approximate resonant state; therefore, the energy harvesting efficiency is greatly improved, vibration energy generated in the running process of the train is converted into electric energy through the piezoelectric effect, and the electric energy is stored and used for supplying power to various sensing devices. Track vibration energy is converted into electric energy which can be stored and used through the flexible structure, 12 piezoelectric patches are arranged on each energy harvesting fastener, the energy harvesting power can basically meet the power utilization requirements of various track sensors, damage to the track caused by vibration can be further reduced through the multi-layer buffer structure, and the energy harvesting efficiency is improved. The service life of the track is prolonged.
本发明公开了一种基于柔性压电结构的自俘能轨道扣件，属于压电俘能结构领域；本发明通过设计柔性垫块，将梁式压电陶瓷粘贴于柔性垫块的缓冲梁结构上，同时在垫块内部嵌入圆片形压电俘能结构，不同俘能结构具有不同的谐振频率，从而使得轨道在不同振动频率下均有俘能结构达到近似谐振状态，从而大大提高了俘能效率，将列车行驶过程中产生的振动能通过压电效应转化为电能并储存，用于给各类传感器件供电；本发明中通过柔性结构将轨道振动能转化为可用于存储并使用的电能，每个俘能扣件上布置有12片压电片，其俘能功率基本可以满足各类轨道传感器的用电需求，且该多层次的缓冲结构可以进一步减小振动对轨道产生的损害，提高轨道的使用寿命。
Self-energy-harvesting track fastener based on flexible piezoelectric structure
The invention discloses a self-energy-harvesting track fastener based on a flexible piezoelectric structure, and belongs to the field of piezoelectric energy harvesting structures. According to the invention, the flexible cushion block is designed, the beam type piezoelectric ceramic is pasted on the buffer beam structure of the flexible cushion block, meanwhile, the disc-shaped piezoelectric energy harvesting structures are embedded in the cushion block, and different energy harvesting structures have different resonant frequencies, so that the track has the energy harvesting structures under different vibration frequencies to reach an approximate resonant state; therefore, the energy harvesting efficiency is greatly improved, vibration energy generated in the running process of the train is converted into electric energy through the piezoelectric effect, and the electric energy is stored and used for supplying power to various sensing devices. Track vibration energy is converted into electric energy which can be stored and used through the flexible structure, 12 piezoelectric patches are arranged on each energy harvesting fastener, the energy harvesting power can basically meet the power utilization requirements of various track sensors, damage to the track caused by vibration can be further reduced through the multi-layer buffer structure, and the energy harvesting efficiency is improved. The service life of the track is prolonged.
本发明公开了一种基于柔性压电结构的自俘能轨道扣件，属于压电俘能结构领域；本发明通过设计柔性垫块，将梁式压电陶瓷粘贴于柔性垫块的缓冲梁结构上，同时在垫块内部嵌入圆片形压电俘能结构，不同俘能结构具有不同的谐振频率，从而使得轨道在不同振动频率下均有俘能结构达到近似谐振状态，从而大大提高了俘能效率，将列车行驶过程中产生的振动能通过压电效应转化为电能并储存，用于给各类传感器件供电；本发明中通过柔性结构将轨道振动能转化为可用于存储并使用的电能，每个俘能扣件上布置有12片压电片，其俘能功率基本可以满足各类轨道传感器的用电需求，且该多层次的缓冲结构可以进一步减小振动对轨道产生的损害，提高轨道的使用寿命。
Self-energy-harvesting track fastener based on flexible piezoelectric structure
一种基于柔性压电结构的自俘能轨道扣件
WANG RONG (author) / CHEN HENG (author) / ZHAO YIWEN (author) / YANG KUNYING (author) / TANG XINYI (author)
2023-06-30
Patent
Electronic Resource
Chinese
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