Abstract
Computer-Aided Efficient Design and Performance Optimization of Cutting Head for Roadheader
Highlights
The roadheader is mainly composed of walking mechanism, working mechanism, loading mechanism and reloading mechanism
Wang et al [12] study the load fluctuation of cutting head of longitudinal axis roadheader by mathematical method and find that the frequency of low frequency fluctuation is the product of spiral number and rotation frequency, while the frequency of high frequency fluctuation is related to the circumferential spacing of cutting picks
We present a method for the structure design and performance optimization of cutting head
Summary
The roadheader is mainly composed of walking mechanism, working mechanism, loading mechanism and reloading mechanism. The design software of cutting head for roadheader is constantly innovated and improved, the software functions and factors considered are not comprehensive, and it fails to consider the important indexes reflecting cutting performance such as load, chip area, square rate, cutting power, cutting specific energy consumption, etc., and fails to consider the influence of structural parameters, kinematic parameters and coal-rock properties on cutting performance. It is worth mentioning that the cutting performance in the proposed approach is not completely calculated by theoretical equations, but based on the virtual prototype technology, the coupling model of cutting head cutting rock wall is constructed, and a database matching the structural parameters, working parameters, coal-rock properties and cutting performance is established through a large number of simulations. Through the design and application of EBZ220 cutting head, it is found that the design process is convenient and fast, and the cutting head has good performance, which indicates that the proposed approach can provide a clear quantitative basis for its structural design and performance optimization
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