公开(公告)号：US3718031A

公开(公告)日：1973-02-27

申请号：US3718031D

申请日：1970-12-03

申请人： MERRICK SCALE MFG CO

发明人： CHRISTMANN J

IPC分类号： G01G3/16 ,  G01G11/00

CPC分类号： G01G11/00 ,  G01G3/16

摘要： A 90* phase angle lag is created between the resonant vibration frequency of a load on a belt conveyor and the frequency of a motor driven eccentric inducing vibration to stringers supporting the belt conveyor between vertical members and deviation of said phase angle is detected by a phase sensitive network which adjusts the motor. The speed of the motor is converted into a linear alternating current voltage transmitted across a potentiometer adjusted by the speed of the belt conveyor to produce the product of the speed of the belt conveyor and the load on said conveyor.

摘要翻译： 在带式输送机上的负载的共振振动频率与引起振动的电动机驱动的偏心体的频率之间产生90°相位角滞后，从而在垂直构件之间支撑带式输送机的桁条和所述相位角的偏差由相位 调整电机的敏感网络。 电动机的速度被转换成通过由皮带输送机的速度调节的电位计传输的线性交流电压，以产生皮带输送机的速度和所述输送机上的负载的乘积。