Simulation of arm and hydraulic cylinder hinge point forces for impacting-crushing rock-roadheader working mechanism
In order to find out forces on hinge points between arms and hydraulic cylinders for an impacting-crushing rock-roadheader during drilling,the mechanism's kinematic equations were built by means of multi-body dynamic theory and its virtual prototype model was established by ADAMS simulation software.The random load of its crushing head was confirmed by a wave kinetic theory.These hinge point forces under the biggest breakage depth and the biggest broken height were simulated and their sizes and variations were found.The results show that these forces change with drilling resistance and position,attitude of the mechanism,their trends are same and fluctuations are obvious:each hinge point force changing with drilling resistance,it's fluctuates significantly and related to the work position; When driving oil cylinder with the biggest broken height,the average load of arm Ⅲ suffered most,this easy to make the work mechanism of arm to produce fatigue crack and affect the service life.Compared with the result of Matlab,the maximum error is 0.29％,which proves that the built model and the research method are feasible.
国家科技期刊平台
NSTL
万方数据
维普
