Acoustic part-grade sound insulation testing wall for automobile

Abstract

The invention discloses an acoustic part-grade sound insulation testing wall for an automobile. The acoustic part-grade sound insulation testing wall is installed between a reverberation chamber and an anechoic chamber and comprises an outer frame. The outer frame comprises a front-and-back-through cavity, an automobile body is fixed into the cavity through a support, light bricks are sealed to the front side and the back side of the automobile body respectively, the portion between the light bricks is filled with sound absorbing materials, and two forklift holes are formed in the lower portion of the outer frame. According to the acoustic part-grade sound insulation testing wall, as labor is replaced with a special device, direction operation of a worker can be avoided as far as possible, labor hours and labor are saved, and safety is better improved; as the device can be recycled, waste of materials can be greatly reduced; as the structure of a wall body and the structure of a sound insulation wall are adopted in cooperation with a fixing block and a nut, the installed stability can be improved; as a large quantity of light sound insulation materials are used, the sound insulation performance of the wall body can be improved while the self weight of the sound insulation wall is greatly reduced, and tested data are more real.

Description

technical field [0001] The present application relates to an automotive acoustic part-level sound insulation test wall. Background technique [0002] Traditional automotive acoustic component-level sound insulation testing methods include: [0003] 1) Cut the body and place the required parts into the sound insulation wall; [0004] 2), filling cement pouring; [0005] 3) Use manpower to carry and move the sound insulation wall into the sound insulation window; [0006] 4), commissioning and installation (completely relying on manpower, without a guiding mechanism, the installation is very difficult and time-consuming); [0007] 5) Seal the gap between the window and the sound insulation wall. [0008] There are following technical problems in adopting the above method: [0009] 1) Manpower is used for handling. Due to the large size of the sound insulation wall and the small operating space, work-related accidents are prone to occur during disassembly and assembly. ...

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Problems solved by technology

[0006] 4), commissioning and installation (completely relying on manpower, without a guiding mechanism, the installation is very difficult and time-consuming);

[0010] 2), the gap between the walls is small during installation, the installation is difficult and time-consuming

[0011] 3) The sound insulation wall cannot be recycled for many times, it can only be scrapped after use, and the test cost is high

[0012] 4) The side surface of the reverberation room of the sound insulation wall only considers sound insulation, and the impact on the entire reverberation room is not considered. The wall surface cannot be used as a reflecting surface, which has a certain impact on the entire reverberation field

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