Overall Plan On Mining Excavator

Mine excavator is the main mining equipment of opencast working, ensure the overall parameters of the excavator is not only one of mining excavator overall plan, but also the key issue in excavator preliminary design.The experience from professional books is only suitable for small size mechanical excavator,for mine excavator sample range,use the curve fitting method and judge with the optimum fitting equation judging principle,establishment equation of the independent variable is dipper capacity and dependent variable overall parameters,puts forward a feasible method,has application value for large excavator the parameter prediction.Mining way and mining track is the important content of the excavator overall plan. After field observation and analysis,mining way can be divided into stripping type mining (not the blasting) tipped fill and mining of the tipped fill after blasting,the track are circles and logarithmic spirals.According to the principle of mining volume is equal to the dipper capacity, for the stripping type mining and mining of the tipped fill after blasting, determine the initial mining position and the corresponding mining track specific expression,to lay the foundation for force and energy parameter analysis and matching, for the cot of the track mining angle value (k) of stripping type mining and mining of the tipped fill after blasting is different,puts forward variable length connecting rod,making no change of connecting rod excavator manufacturers in the case can continuously stripped.Put forward track the total power of the mining minimum as reasonable mining track in different mining way and different track, through the average power comparison after calculation of examples, suggest using logarithmic spiral track when mining to the crowd axle height in stripping type mining and mining the tipped fill after blasting; using arc track when mining to the step height in stripping type mining.Summing up the above, the work creates a good start for enriching the excavator design theory and establishing an independent design system.