Magnetoelectric coupling nonlinear vibration reduction power generation coarse particle device for railway road and bridge transition section

Abstract

The invention discloses a magnetoelectric coupling nonlinear vibration reduction power generation coarse particle device for a railway road and bridge transition section. The magnetoelectric coupling nonlinear vibration attenuation power generation coarse particle device comprises a stress conduction box, a piezoelectric energy harvesting module, a plurality of damping vibration attenuation modules and a plurality of magnetic nonlinear vibration energy collection modules. Wherein the damping vibration attenuation module is used for absorbing vibration energy of the stress conduction box and transmitting the vibration energy to the magnetic nonlinear vibration energy acquisition module. The magnetic nonlinear vibration energy acquisition module is used for converting the received vibration energy into electric energy and transmitting the vibration energy to the piezoelectric energy harvesting module. Therefore, according to the magnetoelectric coupling nonlinear vibration reduction power generation coarse particle device, vibration reduction and power generation of a vehicle-rail-roadbed coupling dynamic model are combined, vertical, transverse and axial three-dimensional vibration transmitted to a railway roadbed by a steel rail can be absorbed, and part of vibration energy generated by train operation is converted into electric energy.

Description

technical field [0001] The present application relates to the field of energy-saving and vibration-reduction of subgrades in transitional sections of railway roads and bridges, and specifically relates to a magnetoelectric coupling nonlinear vibration reduction and power generation coarse particle device in the transitional section of railways and bridges. Background technique [0002] With the continuous increase of the speed and axle load of the current railway trains, the road-bridge transition section is the weakest part of the railway construction. Due to the large difference in rigidity between embankments, bridges and culverts, the vibration of the road-bridge transition section is often large. The railway road-bridge transition section The vibration problem caused by train operation is becoming more and more prominent, which affects the safety and stability of the train to a certain extent, and the larger vibration has a greater impact on some sensitive structures. A...

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Problems solved by technology

At present, for the vibration reduction of railway subgrade, it is mainly to reduce vibration and noise by bonding damping materials on both sides of the rails, but the long-term stability of the bond between the damping materials and the rails is difficult to guarantee, and the damping materials may fall off. There are hidden dangers to the safe operation of high-speed trains, and the constraints and protection costs for long-term work of damping materials will be relatively high

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