Environment-friendly sound insulating high speed train floor structure

Abstract

The invention discloses an environment-friendly sound insulating high speed train floor structure, and relates to the field of railway vehicle floors. A free sticking elastic damping material is sprayed on the upper surface of a web plate of a floor aluminum profile; the inner chamber of the floor aluminum profile is filled with a polyurethane sound absorption material; the upper surface of a top plate of the aluminum profile and lower supports are bonded with the sticking elastic damping material; the upper part of the sticking elastic damping material is bonded with a restraint layer aluminium plate; the upper part of the floor aluminum profile is bonded with the lower supports; the lower supports and upper supports are connected through rubber cushions; a cold-proof material is laid between the restraint layer aluminium plate and a sound insulation cushion; the sound insulation cushion and an aluminium plate form an entirety, and then the entirety is bonded with the elastic supports; the upper part of the aluminium plate is bonded with foaming aluminium; the upper part of the foaming aluminium is bonded with the aluminium plate. According to the invention, through the improvement of the structure of the floor, the integral rigidity of the system is reduced, and the sound insulation amount is improved, through the simulation of the test result, the thickness of the plate is specified, the vibration damping noise reducing performance can be optimized, and meanwhile the development requirement of light weight of the vehicle body can be met; on the aspect of vehicle body floor material selection, the novel environment-friendly energy-saving material is preferentially selected.

Description

technical field [0001] The invention relates to the field of rail car floor structure design, in particular to an environment-friendly and sound-insulating high-speed train floor structure. Background technique [0002] In-car noise has become an urgent problem to be solved for the continuous and stable development of high-speed trains. The floor air sound transmission is the main source of noise in the car. Improving the sound insulation performance of the car body floor is of great significance to improving the sound field environment in the car, and it also provides reference and basis for the low-noise design of high-speed trains. [0003] The Chinese patent No. ZL201220016209.3 discloses a high sound insulation floor structure, which improves the sound insulation performance of the floor and reduces the noise of the train, but the floor structure has the following disadvantages: the inner cavity of the floor aluminum profile One cavity is filled with polyurethane, and ...

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Problems solved by technology

[0003] The Chinese patent No. ZL201220016209.3 discloses a high sound insulation floor structure, which improves the sound insulation performance of the floor and reduces the noise of the train, but the floor structure has the following disadvantages: the inner cavity of the floor aluminum profile One cavity is filled with polyurethane, and the other cavity does not have any filling material, so that the existing space resources cannot be fully utilized, and the sound insulation can be maximized; in this floor structure, the gap between the sound insulation pad and the floor aluminum profile Bonding with wooden beams, the structural rigidity of the wooden beams is too large, which cannot play a good damping effect; the sound insulation effect of the surface wooden boards in the floor structure is not significant, it is easy to be deformed by moisture, and it is prone to safety hazards

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