Large bucket wheel machine cantilever low-frequency vibration test method based on carrying roller vibration excitation method

• Main Authors: XIAO DONGMING, JIANG LINGLI, WANG GUANGBIN, SHEN YIPING, FENG HEYING, JIANG YONGZHENG
• Format: Patent
• Language: Chinese; English
• Published: 25.01.2019
• Subjects: MEASURING; PHYSICS; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR

The invention discloses a large bucket wheel machine cantilever low-frequency vibration test method based on a carrying roller vibration excitation method. According to the large bucket wheel machinecantilever low-frequency vibration test method, vibration excitation is performed by means of rotation of carrying rollers on a cantilever, initial displacement is released in a manner of shutting down a belt conveyor and a bucket wheel motor suddenly, and cantilever vibration free attenuation signals during operation and after sudden shutdown of the motor are tested continuously by means of an accelerometer, thereby acquiring the inherent frequency of the cantilever without introducing external equipment, and being simple, economical and efficient. 本发明公开了种基于托辊激振法的大型斗轮机悬臂低频振动测试方法，利用悬臂之上的托辊旋转进行激振动，然后突然关停皮带输送机和斗轮电机的方式释放初位移，通过加速度计连续测试马达运行和突然停止后的悬臂振动自由衰减信号，从而获得悬臂固有频率，无需引入外部设备，简单经济而有效。