Design And Finite Element Analysis Of EBZ132Cd New-style No.1Conveyor Driving Pulley

Scraper conveyor is usually adopted by loading mechanism of cantilevered roadheader composed by insertion board and No.1conveyor. But the junction of insertion board and No.1conveyor can’t be smoothly transited, which always makes the scraper knocking at the transitive arc and destroys the security of working conditions. Belt conveying proposed by this paper is flexible, which can overcome the defects above effectively.The principle of friction driving for belt conveyor was analyzed by the thesis. A mathematical formula of curvature radius at the transited arc of insertion board joint with No.1conveyor was established when the insertion board is at the highest point. The tension of belt during the lifting process of insertion board was calculated and variable quantity of belt length utilizing the belt sag between the rollers was compensated during the lifting process of insertion board. Under the premise of designing conditions, the range of sag between rollers is0.67%～0.9%, this result is according with industry standard.Then, the static and failure analysis was made by the thesis under the designing conditions. The common reasons of failure were acquired. The design and calculation of main structure and parameter for the driving pulley composed of shell, web, hub, expansion bushing and shaft was completed. The3D model and parameters were provided to the static analysis of driving pulley.Finally, the static analysis of driving pulley was completed by the thesis with ANSYS. Equivalent stress and displacement contours of all pars and the whole machine were obtained. The strength requirement of driving pulley was determined under the designing conditions. The simulation results shown that the driving pulley maximum stress,33Mpa, is near the coupling end of contract surface of driving pulley shaft and bearing and the maximum deformation,0.184mm, is on the surface of pulley shell. The results of simulation provide a parametric basis for improvement and optimization of driving pulley structure.