Environment-friendly soundproof light floor

Abstract

The utility model discloses an environmental protection sound insulation type light floor relates to track vehicle interior trim material field, and its technical scheme main points are: including from top to bottom fixed connection's surface layer, first sound insulation layer, base material layer, second sound insulation layer and bottom layer, effect is through multilayer structure cooperation effect realization comprehensive function: from top to bottom surface layer first to carriage inside trample, friction etc. external force forms basic protection, and first sound insulation layer preliminary barrier carriage inside and outside noise transmission, and the middle base material layer inside evenly set up's through -type cylindrical sound insulation hole and the sound absorption cotton strip of adaptive filling can further absorb the noise and vibration through first sound insulation layer, and through the sound absorption characteristics of sound absorption cotton strip and the composite structure of base material layer, the sound insulation effect is strengthened, and then second sound insulation layer carries out secondary barrier to the residual noise that has not been absorbed by base material layer, and constructs "preliminary barrier - intermediate absorption - secondary barrier" multilayer sound insulation system.

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