Prediction Method and Test of Oil Temperature during Rocker Arm Loading of High Power Density Shearer
Analyzed the factors and calculation methods of heat production and dissipation of the rocker arm of high power density shearer,established a thermal balance equation,and estimated the oil temperature during the rocker arm loading test process based on the thermal balance equation.Through calculation and test,the temperature rise and time variation curves of the rocker arm under different refueling amounts were obtained for the rocker arm under no-load and loading conditions,respectively.The results show that gear meshing,bearing friction and spur gear stirring play a dominant role in the heat production of rocker arm,with surface heat dissipation,internal component heat absorption and cooling water being the main ways of heat dissipation.During the design process,measures can be adopted to reduce heat production and expand heat dissipation from the above aspects.This method can predict the loading oil temperature of the shearer arm and can be widely applied.
high power densityshearerrocker armloading oil temperatureprediction method
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