Low Power Chopper With Its Driveline System Design And Performance Optimization

Crop straw is a valuable renewable resource.There is abundant straw and forage grass resource in China.But during the process of its commercialization,limited by the straw porous structure,straw density,scattered distribution,and other impact factors,leading to the block of the straw source to be utilized,straw returning mechanization can get enriching the soil;so,the straw baler or returning machines are becoming the favorite among the customers.This kind of machine,which massed the straw pulverizing with baling function is becoming very popular in the market.Most of the machines were drived by the tractor.They're playing the key roles to reducing the air pollution of straw burning.The baled straw can be used as fodder or generated electricity.The baler with flexible fingers rotor can't collect the corn straw well,only for corn leaves or grass.Therefore,depend on its platform,develop a new straw pulverizing function with corn straw bale.Not only the soft leaves or grass but also the harden corn straw,the customer can bale either grass or corn straw by changing the flexible finger rotor to straw pulverizing whenever they have the baling requirement.Like so,this baler will owe two bale functions on one platform.Good function extension for the customers.For the further pr oposal,how to realize the power link to the chopper,how to layout its driveline system will be discussed in this paper topic.First,imported the original baler 3D models,finished the new driveline system concept layout.Follow the DFMEA process to assist the layout analysis,function analysis,failure analysis,correct actions,optimization and development.That will help engineer to eliminate most of the design risk.After the design project confirmed,ongoing building the other driveline components.The design intention is to provide 10~20 k W power for the chopper.The major conclusions of the driveline system are just like below:(1)The driveline layout on the left side of the chopper,but the long HC belt project isn't good.Its drive route is too long and must be configured the guiding pulleys.When loading 10 k W power on the prototype machine,the long V-belt jumped hardly,unstable power transfer,perhaps cause the earlier failure risk.If developing it to 2HC belt drive,tension structure is difficult to design.(2)The driveline layout on the right side of the chopper,the gearbox driveline project is good.Easy to layout 2HC belts drive,the shorter driveline route,smaller tension support,high realiability,better stability when running.After confirmed this optimized project,ongoing the rest of the driveline components design.For further analysis and optimization,one FEA o f the gearbox support was put here.Anyway,following the simplification design concept is very important across the whole design process.(3)After the risk evaluation for the gearbox driveline project,team discussing finds out the potential high risk system is the gearbox.The further risk factor focuses on its loading temperature.so,the gearbox oil type,work load and oil volume will be a s the test factors.To estimate the gearbox working temperature under load.Record these test data and build mathematical models.Running the Design-Expert 8.0.6 software to get the computer-aided,checking and analysis data.At the end,we can achieve the optimized data group.