Method for extracting drum load spectrum of cutting unit of drum shearer

Abstract

The invention provides a method for extracting a drum load spectrum of a cutting unit of a drum shearer. The method comprises the steps of obtaining a coal rock occurrence condition of a rock sample of a coal rock; testing a stress condition of a single cutting tooth of a drum of the cutting unit of the shearer to obtain a mean load model of the single cutting tooth; randomizing the mean load model of the single cutting tooth to create a cutting load random theoretical model of the single cutting tooth; according to the cutting load random theoretical model of the single cutting tooth, superposing three-way cutting force of the single cutting tooth to obtain a drum load spectrum model of the cutting unit of the drum shearer; and performing transient response analysis on each part of the drum according to the drum load spectrum model of the shearer to obtain a load spectrum of each position of each part of the drum. According to the method, random load models of the single cutting tooth are superposed to obtain random three-way force and three-way moment in the mass center of the drum, so that load input bases can be provided for subsequent calculation, analysis, optimization design and the like of a transmission system of the cutting unit of the shearer.

Description

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AI Technical Summary

Benefits of technology

This patented technology helps researchers analyze how well different materials cut through them during mining operations compared against experimentally measured data from previous experiments or simulations. By adjusting certain factors such as material type, size, shape, etc., this method allows for more accurate analysis of these samples than previously possible due to their specific properties.

Problems solved by technology

This patents discusses various ways for studying the loading behavior of drums during use at full machine level (FML). However, existing approaches have limitations such as lacked precision or efficiency due to their assumptions about how well they work together. There needs an improved methodology called dynamic load analysis (DLSA) to better identify potential issues related to improving performance and lifespan of the drums while reducing costs associated with testing new designs without compromising safety concerns.

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