The objective of this research is to develop a low-noise and low-vibration hydraulic breaker that is able to meet the proposed strict noise certification and environmental regulations on construction equipment. Noise and vibration characteristics of a conventional hydraulic breaker are examined using a noise test and acoustic analysis. A dynamic absorption mechanism is applied to the current upper cushion to lower the noise energy and vibration force transmitted by the operating mechanism. The high effectiveness of the developed hydraulic breaker system on the noise and vibration problem is verified using a noise test and acoustic analysis.
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