星形齿刀防堵式小麦免耕播种机设计与试验

我国北方的一年两熟种植区,经常玉米地播种小麦,但由于收获后田间玉米秸秆残渣量大、根茬粗且韧性强,容易导致小麦免耕播种机通过性能差,极易出现堵塞。为此,设计了一种星形齿刀主动锯切防堵式小麦免耕播种机。同时,描述了该机的总体设计方案及星形齿刀式锯切防堵装置、锐角短翼型开沟器和双圆盘开沟播种器等关键部件的结构,并确定了主要结构参数。田间试验证明:该防堵装置不仅可以很好地切断玉米秸秆,还能及时预防堵塞,以保证小麦免耕播种机的田间通过性。该机具的研制丰富了我国北方一年两熟区免耕播种机具的多样性,对免耕播种技术的推广具有积极意义。

Experiment and Design of the Anti-blocking Star-gear Blade Type of No-till Planter for Wheat

According to the problem of straw blocking of no-till wheat planting in heavy corn residue and weed cover fields in annual double cropping areas of China , the active attempts to prevent the blade sawing star style no-till planter for wheat was designed .This paper mainly analyzed star gear type blade opener , the active short wings type mechanism and double disc for seeding .The field experiment showed that the machine could solve the residue and weed blocking ef-fectively , has a good performance of passing and cutting stubble , that this new planter is an ideal no-till planter for wheat in annual double cropping areas of China .