舰船转台系统噪声诊断技术

基于振动信号理论分析以及振动噪声试验方法,对某舰船转台系统的表面振动加速度以及表面声压级进行测试研究分析。实验结果表明,随着转台系统转速的增大,其振动加速度值以及噪声值显著增加。不同工况下,振动与噪声能量分布较为一致且主要集中在1200~2000 Hz之间,峰值频率间隔为方位电机轴频。主轴的齿轮啮合频率对应振动噪声能量较小,方位电机和减速机的振动加速度明显大于转台主轴齿轮振动加速度,相同转速下方位电机连减速机空转时噪声值大于转台噪声值,方位电机和减速机为转台系统噪声主要来源。对方位电机以及减速机进行减振处理,可降低转台噪声值。

Research on noise diagnosis technology of ship turntable system

Based on the theoretical analysis of vibration signal and the method of vibration and noise test,the surface vibration acceleration and surface sound pressure level of a ship turntable system are measured and analyzed.The experimental results show that the vibration acceleration and the noise increase significantly with the increase of the rotating speed of the turntable system.Under different working conditions,the energy distribution of vibration and noise is consistent and mainly concentrated between 1200 Hz and 2000 Hz,and the peak frequency interval is shaft frequency of azimuth motor.The corresponding vibration noise energy of main shaft gear meshing frequency is small,the vibration acceleration of azimuth motor and reducer is obviously higher than the vibration acceleration of spindle gear of turntable,and the noise of azimuth motor continuous reducer is greater than that of turntable at the same speed.Azimuth motor and reducer are the main sources of noise in turntable system.The noise of turntable can be reduced by reducing vibration of azimuth motor and reducer.