Browse > Article
http://dx.doi.org/10.5050/KSNVE.2010.20.2.138

Noise Reduction of a Hydraulic Breaker by Change of a Chisel  

Kim, Cheol-Ho (한국생산기술연구원)
Kim, In-Sik (한국생산기술연구원)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.20, no.2, 2010 , pp. 138-143 More about this Journal
Abstract
Hydraulic breakers are widely used for mining and construction engineering area but make serious noise problem. The noise is generated between a chisel and a piston when they are hit by a fluid power. This study proposed noise reduction method by the change of a chisel in a hydraulic breaker. In the new design, a different material is inserted inside of a chisel. The proposed design is analyzed and simulated by the use of a numerical method. A chisel by the new design was installed in a hydraulic breaker and experimented for sound pressure level. As a result, the noise of hydraulic breaker can be reduced more than 4 dB by simply changing a chisel.
Keywords
Hydraulic Breaker; Chisel; Radiated Noise; Low Noise;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Ih, J. G., Chae, K. S., Lee, J. H., Park, S. H., Ha, T. G. and Lim, J. H., 1999, "Development of Low-noise Hydraulic Breaker," Proceedings of the KSME Annual Autumn Conference, pp. 779-784.
2 Lee, J. H., Ih, J. G., Park, S. H., Ha, T. G. and Lim, J. H., 2001, "Vibro-acoustic Design and Development of a Low-noise Hydraulic Breaker," Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 11, No. 5, pp. 148-155.
3 Announcement of Ministry of Environment, 2007, "Measurement Method of Construction Machinery Noise," 2007-113.
4 Kim, J. T., Jun, O. S., Yun, B. Y. and Lee, Y. H., 1995, "Low Noise Breaker," Proceedings of the KSNVE Annual Autumn Conference, pp. 213-216.