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冷却系统是振动压路机关键部件之一,其中高速旋转的风扇所产生的噪声高达102dB(A),不但危害操作人员的身心健康,还影响周围人们的正常生活。对该系统的原始噪声值测试后,分析冷却风扇风量Q、风扇直径D、静压P、风扇转速n与风扇噪声之间的关系,采用独立冷却结构、弹性连接结构,确定护风圈与风扇最佳相对位置,优化护风圈结构,选用非等间距夹角风扇及增加风扇直径等技术措施,对振动压路机冷却系统的噪声进行控制,使其噪声值下降12dB(A)。
The cooling system is one of the key components of the vibratory roller. The high-speed rotating fan produces noise up to 102dB (A), which not only endangers the operator’s physical and mental health but also affects the normal life of the people around them. After the original noise value of the system is tested, the relationship between the cooling fan air volume Q, the fan diameter D, the static pressure P, the fan speed n and the fan noise is analyzed. The independent cooling structure and the elastic connection structure are used to determine the relationship between the air shield ring and the fan Optimal relative position, optimization of the structure of the grommet, selection of non-equidistant angle fan and increase of fan diameter and other technical measures to control the noise of the vibration roller cooling system so as to reduce the noise value by 12dB (A).