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Aiming at the problem of shear damage of shearer ranging arm caused by thermal load and force load, the ranging arm shell of the drum shearer is taken as research object, the mechanical properties, temperature field distribution and thermal characteristics of the ranging arm shell are carried out. Based on the theory of heat transfer, the heat generation and heat dissipation of the ranging arm are analyzed, the heat balance analysis of the ranging arm shell is built, and the heat balance temperature at different environment temperatures is calculated. The thermal analysis and thermal structure coupling analysis of the arm shell are carried out, and the stress and deformation distribution of the ranging arm shell are obtained. The results shows that the maximum stress and maximum deformation of the ranging shell are greatly increased under the thermal balance temperature. The correctness of the thermal analysis method is verified by the loading experiment. Keywords—ranging arm; heat balance; thermal analysis; thermal structure 批

Thermal Characteristic on Ranging Arm Shell of Drum Shearer