Experimental study on shearer traction vibration considering attitude disturbances

Area of Science:

• Mining Engineering
• Mechanical Vibrations
• Machine Dynamics

Background:

• Structural clearances in shearers lead to frequent oscillations and jumps.
• These movements cause collision and vibration impacts on traction components.
• This exacerbates traction failure in mining shearers.

Purpose of the Study:

• To investigate the correlation between shearer attitude disturbances and traction vibration.
• To elucidate the influence mechanism of attitude disturbances on traction vibration.
• To propose a signal monitoring approach for judging traction attitude disturbance and load-sharing performance.

Main Methods:

• Conducted experiments on traction vibration.
• Measured spatial swaying of the shearer.
• Analyzed vibration differences between two traction components.
• Discussed the influence of the rocker arm's lifting angle.

Main Results:

• Rolling swing intensity is highest; yawing swing intensity is lowest.
• Pitch swing intensity increases with the rocker arm's lifting angle.
• Vibration impact indices of the two walking mechanisms exhibit a competitive relationship, useful for judging rolling swing and load-sharing.
• Average vibration peaks in support shoes show a competitive relationship, useful for judging pitching swing and load-sharing.

Conclusions:

• Attitude disturbances significantly impact shearer traction vibration.
• The competitive relationship of vibration indices provides reference signals for monitoring attitude and load-sharing.
• This research offers insights for reducing traction faults in mining shearers.