Structure Optimization On Ramming Mechanism Of ZZC8800/20/38 Hydraulic Support

In order to effectively solve the environment problem during the "three under" pressure of coal mine coal mining and coal mining,this paper selects ramming mechanism of ZZC8800/20/38 six pillars supporting type solid filling hydraulic support as a research object,the ramming mechanism is different from the key facilities such as general hydraulic support,the compaction mechanism of stress and strength of filling hydraulic support.It has the vital significance to analyze the stress and intensity of the ramming mechanism of hydraulic support.First of all,the paper analyzes the mechanical properties and working condition of ramming mechanism according to the structure characteristics and working principle of ramming mechanism,the analysis shows it doesn't impact the stability of the whole hydraulic support that ramming mechanism is working.Then to establish geometric model of ZZC8800/20/38 type hydraulic support ramming mechanism of by Solidworks,and proceed the finite element analysis about ramming mechanism under different working conditions,and we can determine the position stress concentration and the maximum deformation displacement under every working condition.Secondly,according to the results of the finite element analysis,to consolidate institutions topology and size optimization by ANSYS/Workbench software,after topology optimization,intensity redundant parts of a tamping beam is removed,and proceed to correct rib plate between a compacted reinforcement ribs and reinforcement ribs,then to remove material redundant parts behind the ear base of a tamping beam;The sizing optimization results show the largest lessen of the maximum stress of ramming mechanism is 14.9%,the lessen of maximum stress is 11.1%,the lessen of the quality is 128.4 kg,the strength of ramming mechanism has been improved and achieved the lightweight,then the fatigue analysis is compared after optimization,the base optimized fatigue life has been extended and safety factor has been improved.Finally,to proceed to analyze limit position of height on the ramming mechanism and the connection point,and to optimize the connection point height based on optimized scope,and verify the optimized results which are got by the optimal solution,the results show optimization is feasible.