Coal Mine Tunnel Heavy Roadheaders Test Bed Design And Research Of Key Technologies

Analysis the loadheader the gap with foreign advanced technology reasons, the experimentalconditions found loadheader restricting our boring machine is the lack of development of theindustry speed of the main factors, according to loadheader R&D and manufacturing units ofthe actual needs, analyze and determine the coal mine tunnel test-bed of heavy loadheaderconcrete structure. That the combination of two degrees of freedom rotary bearings areheavy-duty bench is one of key technologies, to determine the combination of two degrees offreedom is a test-bed bearing the weak link. Combination of the two degrees of freedom bearinga heavy rotation the actual working conditions of the theoretical calculations and to express itsrotary mechanical model. Application of PRO/Engineer software test-bed for interferenceanalysis, the experimental station of the drive cylinder to do the motion analysis, has beendriving the movement of the cylinder need to meet the curve.Using ANSYS finite element analysis software for two degrees of freedom heavy-dutybearings for static analysis, modal analysis, harmonic analysis and fatigue analysis. Determinethe combination of two degrees of freedom is not the failure of the bearing static load by theexternal stimulus and lead. Combination of rotary bearing the cumulative fatigue factor of0.82312, according to Miner’s theory correct theory of cumulative fatigue, two degrees offreedom to determine the combination of bearing failure in the form of fatigue failure the firsttime, follow-up on the bench and theoretical study of the design provides a reliable theoreticalbasis.