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分析了球磨机滚筒的振动特性，指出球磨机前轴承座的振动信号可较好反映球磨机内存煤量的变化。设计了振频式负荷变送器，通过现场试验说明该变送器可在线监测球磨机存煤量
The vibration characteristics of ball mill drum are analyzed. It is pointed out that the vibration signal of ball mill front bearing seat can better reflect the change of coal mass in ball mill. Vibration frequency load transmitter is designed, and the field test shows that the transmitter can monitor the amount of coal stored in the ball mill online