Design And Finite Element Analyse Of Row-controlled No-tillage Wheat Drill

It is a significative mission for the persons majoring in agriculture mechanics to spread conservation agriculture, especially in the region adopting the double cropping mode. The culture condition in these areas gives some special problem to drill. For example, it is pressing to plant wheat as the follow course of maize; At that time the stalks cover is so heavy and the stalks are so flexile that the block is serious; The bushy maize root makes the earth surface too rough to drill in the no-tillage procedure; And seed bareness is familiar when adopting machines with gravity-root-broken mechanisms, etc. Presently, most native or foreign no-tillage drill can not finish the work smoothly. Designing and manufacturing 2BMD-12 row-controlled no-tillage wheat drill have been recited in this article based on the analysis and studies of the intention and principles of the conservation tillage.Strip shatter anti-blocking technology is imported. Make the knives of pulverizer run through the abutted furrow openers stems to eliminate the jam. Draw the three-dimensional model of the drill in Pro/Engineer and make the simulation of the gimbal transmission shaft rotating in the suspension frame to quicken the design steps and advance the quality.The main frame of the drill has a inferior stabilization for the 2.2m breadth and high speed (1415r/min) rotation of the main shaft. So do the mode analysis in the finite element analysis software ANSYS and make appropriate remedy for the main frame and the main shaft. Get a compact firm steady model in the software interface.The first sample drill had been finished in July of 2003. Several experiments (about 10 hm2) indicates that the design has achieved the main aims. The block can be eliminated when the knives of pulverizer run through the abutted furrow opener stems. The problem of rough seeding bed is avoided in the use of row controlled method. It is more appropriate to the definition of conservative tillage for disturbing less soil. Seeding and fertilization can be finished in the single course in the field with average cover degree of 4kg/m2 and all maize standing. It can save time, increase soil fertility, lessen the working procedure to use the drill. Finally, it will reduce the agriculture input.