Construction machine with cab noise reduction device
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United States of America Patent
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Nov 26, 2013
Grant Date -
Jul 7, 2011
app pub date -
Sep 8, 2009
filing date -
Sep 30, 2008
priority date (Note) -
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Abstract
A construction machine capable of effectively reducing noise which would intrude into a cab, without deterioration in ride quality, comfort and air-conditioning efficiency in the cab is provided. The construction machine includes a lower propelling body, an upper slewing body including an upper frame, a cab including a floor plate and installed on the upper frame, and a cab noise reduction device. The cab noise reduction device includes: the floor plate; an under-cab member including a cab deck supporting the cab and provided under the cab to define a closed-form under-cab space whose periphery is substantially closed, in cooperation with the floor plate; and a resonator reducing noise in the under-cab space by a resonance effect.
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