| The belt conveyer, whose function is transporting and loading the bulk, is a keycomponent of the port loading product line of Caofeidian Ore Port, so its performancemakes a full impact on the working efficiency and the personal safety of the worker. Sothis dissertation researchs the stress, modal, buckling and fatigue analysis, and provides atheoretical base for the optimal design and reconstruction of the belt conveyer.The main research contents are as follows:(1)The operating feature and the design parameters of the belt conveyer system arepresented, and the components of the hydraulic system are selected. Then the model andthe number of the components of the belt conveyer are done, and then it provides a basisfor the strength optimum design of the rail clamping.(2)According to the operation condition and the structure feature of the belt conveyer,the static stress and the random vibration are analyzed, and buckling deformation of thecoupling of the belt conveyer is researched. Then the fatigue life of the coupling ispredicted, and it provides a basis for the performance analysis of the belt conveyer.(3)According to the flow equation of the variable pump and the torque equation ofthe constant motor, the state equation of pump control motor close-loop system isestablished. The transfer function, whose input and output are separately swing angle ofvariable pump and rotate speed of constant motor, is derived through Laplace Transfer.Taking adjusting time and dynamic stiffness as performance indexes of pump–motorsystem, the influence of the design parameters on the dynamic performance is analyzed.(4)Taking two representative failures (rupture of coupling and filter) of the beltconveyer in daily operation as example, the symptom space, the tracing, and the solutionof the filure of the belt conveyer are analyzed, and then it provides a reliability basis onthe usual operation for the belt conveyer. |
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