Simulation And Analysis Based On The Virtual Prototype For Walking Mechanism Of Boom Roadheader

With the development of Roadheader technology,it has become a key equipments for coal mine roadway drifting.As one of the important parts,Walking mechanism performance plays a vital role for service ability,production efficiency and lifetime.For the above reasons,simulation and analysis of the Walking Mechanism based on Virtual prototype is the main research content of this paper.With Cantilever type Roadheader as the research object in this paper,its 3D model was set up by UG,then imported to ADAMS/View to built Virtual prototype.Through kinematics simulation and analysis the result,concluded the load for parts under the boundary condition,the result was used for the finite element analysis on the parts in ANSYS.The complicated parts as driving wheel and tensioning wheel is to create simplify models In UG,and the walking frame model was created as a whole.Modified masses?imposed constraints?created contact,the dynamic model was built.Curves for contact force were got form four working conditions as uniform speed forward,uniform speed back,uniform speed turn and uniform speed climb,though study those curves,analyzing the influence factors of contact force fluctuations for each condition.The accuracy of the result is validated with theoretical calculated value.Extracting the maximum load,assuming the worst working condition,the finite element analysis was carried out on the parts.Optimization analysis was carried out on the driving wheel.