Car roof power receiving system vibration-reduction connecting device and method thereof

Abstract

The invention provides a car roof power receiving system vibration-reduction connecting device and a method thereof. A damping layer is filled in the connecting device to change resonant frequency between a pantograph system and a car roof, reduce mechanical vibration transmitted to a car body by the pantograph system and improve performance matching between bow nets, current receiving stability and vibration reduction effect. The vibration-reduction connecting device is vertically connected between the pantograph and a car roof mounting seat and comprises a lining, an outer shell and a bottom plate. The lining, the outer shell and the bottom plate are all made of metal materials, and damping layers containing rubber materials and bonded and sealed through a vulcanization technology are filled among the lining, the outer shell and the bottom plate. Elastic connection is built between the power receiving system and the car body, vibration generated by air resistance from various directions can be weakened and absorbed by the power receiving system, and generation of rigid resistance on the power receiving system is avoided. Vibration of the pantograph and the vibration frequency of a power grid are matched better, and the matching relations of the bow nets and the current receiving stability are improved.

Description

technical field [0001] The invention relates to a vibration-damping connection device and method for a roof power receiving system applied to rail vehicles, specifically changing the resonant frequency of the pantograph system to reduce vehicle body vibration and noise from entering the passenger compartment, and improving the power receiving system. The safety use and disassembly operation performance belong to the technical field of machinery manufacturing and rail transit. 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 environmenta...

AI Technical Summary

Problems solved by technology

[0006] At present, the power receiving device is generally installed directly on the roof of the EMU, and the power receiving device and the roof are rigidly connected, and no effective vibration reduction measures are taken, which leads to huge vibrations in the power receiving system and the car body. 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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