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Broadband energy harvesting vibration damper device based on internal resonance principle

An anti-vibration hammer and broadband technology, applied in the field of energy harvesting, can solve the problems of short service life of lithium batteries

Inactive Publication Date: 2020-10-27
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the lithium battery has a short service life and needs to be replaced regularly, while the solar battery power supply is greatly affected by the weather

Method used

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  • Broadband energy harvesting vibration damper device based on internal resonance principle
  • Broadband energy harvesting vibration damper device based on internal resonance principle
  • Broadband energy harvesting vibration damper device based on internal resonance principle

Examples

Experimental program
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Effect test

Embodiment Construction

[0019] Such as figure 1 As shown, the present embodiment is arranged on the transmission conductor 2 between the transmission towers 3, as Figure 2 to Figure 4 As shown, it specifically includes: two anti-vibration hammer devices 1 distributed on both sides of the wire clamp 9 connected by the wire clamp joint 8, the anti-vibration hammer device includes: a piezoelectric beam 6 with a piezoelectric sheet 7, a first hammer 5. The second hammer head 11 and the auxiliary beam 4, wherein: the auxiliary beam 4 passes through the first hammer head 5 and is inserted into the second hammer head 11, and one end of the piezoelectric beam 6 is inserted into the second hammer head 11 and is perpendicular to the auxiliary beam 4 .

[0020] The anti-vibration hammer device has two degrees of freedom and the first hammer head 5 is movably arranged on the auxiliary beam 4 so that the ratio of the first two frequencies in the natural frequency of the anti-vibration hammer device is 1:2.

[...

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PUM

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Abstract

The invention discloses a broadband energy harvesting vibration damper device based on an internal resonance principle. The device comprises two vibration damper devices distributed on the two sides of a wire clamp and connected through wire clamp connectors. Each vibration damper device comprises a piezoelectric beam with a piezoelectric plate, a first hammer head, a second hammer head and an auxiliary beam. The auxiliary beam penetrates through the first hammer head and is inserted into the second hammer head, and one end of the piezoelectric beam is inserted into the second hammer head andis perpendicular to the auxiliary beam. The device is simple in structure, and can collect energy to supply power to other equipment while suppressing vibration of the power transmission line. Insulation and sealing are easy, and subsequent storage and use of electric energy are facilitated. The damper generates a 1: 2 internal resonance effect under the action of breeze vibration excitation, so that energy collection and breeze vibration suppression of the power transmission wire can be realized in a relatively large frequency band range.

Description

technical field [0001] The invention relates to a technology in the field of energy harvesting, in particular to a broadband energy-harvesting anti-vibration hammer device based on the principle of internal resonance. Background technique [0002] Breeze vibration is the most common vibration mode of transmission lines. Under the wind speed of 1-10m / s, the vibration frequency of high-voltage transmission line is usually 5-50Hz. Long-term breeze vibration will cause broken bones of transmission wires, broken insulators, and collapsed towers. At present, the micro-meteorological online monitoring device in the transmission line is mainly powered by lithium battery or solar energy. However, lithium batteries have a short service life and need to be replaced regularly, while solar battery power is greatly affected by the weather. Contents of the invention [0003] Aiming at the above-mentioned deficiencies in the prior art, the present invention proposes a broadband energy-...

Claims

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Application Information

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IPC IPC(8): H02G7/14H02N2/18
CPCH02G7/14H02N2/188
Inventor 颜志淼谭婷
Owner SHANGHAI JIAO TONG UNIV
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