New-type noise-reducing sponge for excavating-machine cab

A driver's cab and excavator technology, applied in the field of new noise reduction sponge, can solve the problems of poor noise reduction effect, affecting operator comfort and labor efficiency, low sound absorption rate, etc.

Active Publication Date: 2013-06-26
SHANDONG LISHIDE MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, most of the noise reduction measures for hydraulic excavator cabs on the market are to install glass fiber and foam polyurethane sponge materials on the cab near the engine side and inside the engine hood to absorb sound, and foam polyurethane sponge It is a low-density porous material with low sound absorption rate and poor noise reduction effect, which directly affects the operator's comfort and labor efficiency

Method used

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  • New-type noise-reducing sponge for excavating-machine cab
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  • New-type noise-reducing sponge for excavating-machine cab

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Embodiment Construction

[0007] Attached below figure 1 , attached figure 2 and attached image 3 The present invention is further described: high-density sound-absorbing materials are selected, sound-absorbing and noise-reducing holes with an interval of 8 mm are densely arranged in the sponge, and the inner surface of the sound-absorbing and noise-reducing holes falls from top to ” shape, and there are evenly distributed annular grooves on the inner surface wall. This can improve the sound field distribution during the sound absorption inside the noise reduction hole of the sponge, so that the sound absorption rate of the sponge can be increased to 70%--80%.

[0008] The high-density sound-absorbing material here means at least 50 density or more, more preferably 80 density or more. The high-density sound-absorbing material has a relatively hard texture, which facilitates the processing of the internal structure of the noise reduction hole. High-density sound-absorbing materials are available i...

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Abstract

The invention aims to provide a new-type noise-reducing sponge for an excavating-machine cab, wherein a high-density sound-absorbing material is selected, sound-absorbing noise-reducing holes at intervals of 8mm are densely distributed in the sponge, the inner surface of each sound-absorbing noise-reducing hole is sandglass-shaped from the top to the bottom, and averagely-distributed annular grooves are arranged on the wall of the inner surface, so that the sound-absorbing rate of the sponge can be increased to 70-80 percent, and the noise-reducing effect is good.

Description

technical field [0001] The invention relates to a novel noise-reducing sponge for an excavator driver's cab, belonging to the field of construction machinery. Background technique [0002] At present, most of the noise reduction measures for hydraulic excavator cabs on the market are to add glass fiber and foam polyurethane sponge materials on the hoarding plate near the engine side of the cab and inside the engine hood to absorb sound, while the foam type polyurethane sponge It is a low-density porous material with low sound absorption rate and poor noise reduction effect, which directly affects the operator's comfort and labor efficiency. SUMMARY OF THE INVENTION [0003] In order to overcome the above defects, ensure a comfortable and convenient operating environment, satisfy human-machine engineering, and help operators work efficiently and reliably, we have invented a new type of noise reduction sponge for excavator cabs, using high-density sound-absorbing materials, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10K11/162
Inventor 王振华史继松宋祥献许跃雷石岩王经聪王维磊李永刚
Owner SHANDONG LISHIDE MACHINERY
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