Car roof power receiving system car body connecting damping device and method thereof

Abstract

The invention provides a car roof power receiving system car body connecting damping device and a method thereof. Piezoelectric damping materials are added in a vertical connecting device between a pantograph and a car roof, and therefore mechanical vibration and noise generated on one side of the pantograph are attenuated and separated through the piezoelectric damping materials in an energy loss mode, and influences on the environment in a passenger room from the pantograph are restrained, and stability of a car body in a high-speed running process is guaranteed. The car body connecting damping device is vertically connected between the pantograph and a car roof mounting seat and comprises an inner seat, a piezoelectric damping layer and an outer seat. The inner seat and the outer seat are made of metal materials. The piezoelectric damping layer is filled between the inner seat and the outer seat after pouring forming and is formed by a polymer matrix, piezoelectric ceramics and a conductive phase in a composite mode. Elastic connection is built between the power receiving system and the car body through the piezoelectric damping layer made of nonmetal materials and in a composite layer structure, vibration generated by air resistance from various directions can be weakened and absorbed, and generation of rigid resistance on the power receiving system is avoided.

Description

technical field [0001] The invention relates to a car body connection damping device applied to a power receiving system on the roof of a rail vehicle, in particular to achieve the processing effect of vibration reduction and noise reduction by filling piezoelectric damping materials, and belongs to the technical fields of machinery manufacturing and rail transportation. Background technique [0002] With the rapid popularization of domestic urban rail transit and the substantial increase in vehicle speed, higher design and use requirements are put forward for improving the comfort of the passenger interior environment. [0003] As the speed of the vehicle reaches 300 kilometers per hour and above, the decibels of the noise also increase significantly. The noise is transmitted to the vehicle, directly affecting the comfort of passengers, and will also cause environmental pollution and noise nuisance along the railway line. At the same time, the vibration will also make the ve...

AI Technical Summary

Problems solved by technology

In addition, the friction sound between the pantograph and the catenary wire and the arc noise generated when the pantograph is off-line can be directly transmitted to the car, thus affecting the environment in the car

In addition, the vibration generated by the pantograph during the operation of the train will also be directly transmitted to the car body, resulting in much higher noise in the pantograph area than in other areas of the passenger compartment

[0005] At present, on high-speed rail vehicles, the power receiving device is generally installed directly on the roof position. Rigid connection is used between the power receiving device and the roof, and no effective vibration reduction measures are taken. huge vibration

A large number of tests also show that the vibration of the roof in the pantograph area is significantly higher than that in the non-pantograph area, resulting in significantly higher noise in this area than in other areas.

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