The Optimization And Research For The Planetary Gear Reducer Of EBZ135Roadheader Cutting Unit

The rapid excavation of the coal tunnel is a key technologies to ensure coal production and extraction efficiency In the coal industry. Mining equipment and technical level is directly related to the productivity and safety of coal mines. At present, the supporting operations of roadheader and th monomer jumbolter is the main roadway excavation way in the Domestic large and medium-sized coal mines,called the coalroad comprehensive mechanized driving,the boomed roadheader is the main Boring machinery. Although our country Continue to increase research efforts on the tunneling technology,and has made some significant achievements in recent years.But, compared with foreign advanced equipment, has the lower overall performance parameters of the roadheader by domestic independent research and develop,and Control Technology、cutting way、dust pelletizing system、the reliability of parts and other aspects, there are still a big gap.EBZ135roadheader is a boomed roadheader, mainly used for roadway and tunnel boring of coal, the semi-coal rock and soft rock roadway. The roadheader transmit the motor torque and power to the cutting head by cutting arm and reducer,to cut the rock and coal.The structure and functioning and other aspects of performance index of the cutting reducer Will directly affect the extraction efficiency、production capacity and the stability of the roadheader by the operation of the cutting head.Therefore,the cutting reducer has an important place in the composition of the EBZ135roadheader. Because roadheader’s working space is Relatively small, therefore, should make the structure of the roadheader’s working part smallest under the premise of guarantee the performance and use requirements.For the boomed roadheader,should reduce the weight and outer diameter of the cutting arm under the premise of guarantee the safety performance index of the cutting arm. As the cutting reducer installed in the cutting arm, which makes reserved installation space of the cutting reducer is very limited.Therefore,the smallest target parameter optimization of EBZ135roadheader’s cutting reducer is necessary to make the minimum volume of the roadheader under the premise of guarantee the safety performance index of the roadheader.The cutting reducer of EBZ135roadheader used is NGW planetary gear reducer.In this paper, completed on the parameter optimization of the reducer through the establishment of the mathematical model and constraints equations of the reducer, by using the MATLAB optimization toolbox. By the calculation of the safety check, further confirmation of the safety performance indicators of the optimized cutting reducer. The volume of the optimized reducer is reduced by22.3%, significantly reducing the volume of the reducer, reduced manufacturing costs, improved cutting performance.Through the use of UG NX7.0established the solid model of the optimized cutting reducer,and conducted kinematics simulation of the solid model.The results of the kinematics simulation verify the optimized cutting reducer to meet the actual requirements, the law of motion of its parts in line with the actual trajectory of cutting reducer.Finally,through the use of UG ANSYS Workbench12.0conducted the structure static finite element analysis of the solid model.Specific analsysed and calculated the structure deformation and maximum stress of the reducer under the action of the maximum static,and Verify the optimized reducer to meet the strength requirements and the maximum deformation of size requirements by compared with the security check results and related technical requirements.