Abstract
Background: The spiral drum is the working mechanism of the coal shearer, whether the design of spiral drum is reasonable or not will directly affect the cutting performance, which has an important impact on the reliability, productivity and working stability of coal shearer. Objective: In order to improve the working performance of spiral drum, a program for the structural design and load calculation of the spiral drum was developed. According to the parameters of MG400 / 951-WD shearer, two types of spiral drum were designed. Methods: The distribution of cutting resistance moment and cutting power of two types of spiral drum were obtained. The stress of the key parts and the acceleration of spiral drum centroid were obtained by the dynamic simulation. Results: According to the analysis of the cutting performance of the spiral drum combined with the results of the dynamic analysis of the shearer, the appropriate spiral drum was selected to match with the MG400/951-WD shearer. Conclusion: The accuracy of the analysis method was verified by tracking the production process of the finalized shearer. The results provide a certain reference for the comprehensive evaluation of the cutting performance of spiral drum.
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