| 4000Nm full hydraulic tunnel rig is a drilling rig equipment that designed to meet the condition of the narrow coal mine roadway,which is mainly used to drill deep hole for gas extraction,water detection and drainage,roof and floor grouting.In this paper,the research and analysis of the power unit and slewing platform for this kind of tunnel drilling rig is given,which is helpful to the development of the tunnel rig.Based on the theory,this paper analyzes the structure of the full hydraulic drilling rig,and then design and selects the power unit and slewing platform.Using 3D drawing software--SolidWorks to model the power unit and slewing platform,and draw the whole drill rig model.Analysis of the work condition of the drill,select two typical conditions which is the drilling operation and lift drill operation to carry out the load analysis for the key components and the mathematical models are established.By substituting the parameter values under different working conditions,the force of the pallet and the slewing platform under two kinds of working conditions is calculated.The finite element simulation software ANSYS Workbench is used to carry out the static and modal s imulation of the pallet and the slewing platform respectively.It is verified that the key components meet the design requirements and still have some optimization space.The optimization module of ANSYS Workbench is used to optimize the design of the slewing platform.The thickness of the platform is chosen as the design variable and the platform weight is set as the objective function.Finally,three sets of optimal solutions are obtained,and a set of solutions is obtained,in which the optimization of the maximum stress and the minimum platform quality is achieved.The optimized platform quality is reduced by 14%. |
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