굴삭기의 선회소음 저감Swing Noise Reduction of an Excavator
- Other Titles
- Swing Noise Reduction of an Excavator
- Authors
- 이소연; 원홍인; 김우형; 김성재; 김인동; 정진태
- Issue Date
- Jun-2015
- Publisher
- 한국소음진동공학회
- Keywords
- Excavator; Swing Noise; Swing Device; Center Frame; 굴삭기; 선회소음; 선회장치; 센터프레임
- Citation
- 한국소음진동공학회논문집, v.25, no.6, pp.391 - 398
- Indexed
- KCI
- Journal Title
- 한국소음진동공학회논문집
- Volume
- 25
- Number
- 6
- Start Page
- 391
- End Page
- 398
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/19791
- DOI
- 10.5050/KSNVE.2015.25.6.391
- ISSN
- 1598-2785
- Abstract
- The swing noise of an excavator is reduced in this study. When an excavator is under a swing motion, it produces the annoying noise which is required to be reduced. To identify the characteristics of the swing noise, the signals of noise and vibration from an excavator are measured during the swing motion. From the variation of the driving motor speed, the noise and vibration signals are picked up and plotted in the waterfall plots. From the waterfall plots, we identify the frequency components corresponding to the driving motor frequency, the gear mesh frequency of the planetary gear, and their harmonics. In addition, the natural frequencies and modes of the center frame are extracted by using the experimental modal test. It is found that the swing noise is amplified when the gear mesh frequencies coincide with the natural frequencies of the center frame. To reduce the swing noise, the structural modification is performed to the center frame. Finally, it is observed that the noise is considerably reduced by the structural modification.
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Collections - COLLEGE OF ENGINEERING SCIENCES > DEPARTMENT OF MECHANICAL ENGINEERING > 1. Journal Articles
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