Noise reduction structure and noise reduction method of railway vehicle floor boards

Abstract

The invention provides a noise reduction structure and a noise reduction method of railway vehicle floor boards. A vibration-reduction connection structure between the guest room floor boards and side walls and a vibration-reduction connection structure between the guest room floor boards and chassis floor boards are adopted, so that noise reduction processing is effectively carried out on a water baffle area, noise level in guest rooms is obviously improved, and riding comfort is improved. According to the floor board noise reduction structure, the guest room floor boards are perpendicularly arranged on a vehicle body chassis through a plurality of floating supports, and two side ends of the guest room floor boards are respectively connected with side walls of a vehicle body through water baffles and sealed connector clips. Sound absorption materials are filled among the upper portions of the sealed connector clips, the water baffles and the vehicle body side walls. Rubber baffle pads are arranged at the bolt connection joints between the top ends of the water baffles and the vehicle body side walls in a lining mode. The bottom ends of the water baffles are arranged on step type sections of the guest room floor boards through bolts, and sealing and noise reduction partition materials are formed between the guest room floor boards and the vehicle body side walls in the water baffle area. Therefore, noises outside the water baffles are difficult to be directly transmitted inside guest rooms.

Description

technical field [0001] The invention relates to a noise reduction processing method applied between the interior of a passenger compartment of a rail vehicle and a car body, in particular relates to a noise reduction structure and a method in the area of ​​a floor water retaining plate, 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] Under the premise that the operating speed is greatly increased, the energy of noise sources outside the rail vehicle (mainly including wheel-rail noise and aerodynamic noise) increases with the speed of 3 to 6 powers, which greatly affects the noise level inside the vehicle. According to the theory of noise superposition, sound insulation measures...

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