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适合丘陵烟区的间歇作业型打窖机设计与性能试验

Design and performance test of intermittent-operation cellar maker adapted to hilly tobacco-growing areas

  • 摘要: 为了解决当前丘陵烟区井窖式膜上移栽作业中存在井窖质量低、机器适应性差的问题,设计了一种间歇作业型打窖机,运用Adams软件进行了运动学仿真,获得了成穴器运动轨迹。结合烟苗农艺性状要求对成穴器、升降机构等关键部件进行了设计与分析,并选用丘陵烟区一款连续作业型打窖机进行移栽环节的对比试验。通过检测井窖质量、孔距均匀性、纵向撕膜口及行直线度偏差等指标,考察该机器的作业效果。结果表明:与连续作业型打窖机相比,该间歇作业型打窖机的井窖直径合格率、井窖深度合格率分别提高2.5、4.2百分点,井窖直立度方差降低1.33,成穴质量较好。间歇作业型打窖机的孔距变异系数、纵向撕膜口尺寸分别比连续作业型机器降低1.03百分点、4.7 mm,表明间歇作业型打窖机的孔距均匀性好,对地膜的损伤程度小,两种机器行直线度偏差的差异性较小。可见,该间歇作业型打窖机可满足丘陵烟区井窖制作的农艺要求。

     

    Abstract: In order to solve the problems of low quality of well cellars and poor machine adaptability in the current well cellar transplanting aided by film mulching in hilly tobacco-growing areas, an intermittent-operation cellar maker was designed and tested. Adams software was used for kinematics simulation to obtain the motion trajectory of the hole former. Based on the agronomic requirements, the key components of the cellar maker including the hole former and the elevating mechanism were designed and analyzed. A continuous-operation cellar maker in hilly tobacco-growing areas was selected for transplanting comparative test, and the maker performance was evaluated by measuring indicators such as well cellar quality, hole spacing uniformity, longitudinal film tear opening size and row straightness deviation. The results showed that compared with the continuous-operation cellar maker, the qualified rates of cellar diameter and cellar depth of the intermittent-operation cellar maker were 2.5 and 4.2 percentage points higher, respectively. The variance of cellar uprightness was 1.33 lower than that of the continuous-operation cellar maker, indicating improved hole forming quality. The coefficient of variation of hole spacing and the longitudinal film tear opening size of the intermittent-operation cellar maker were 1.03 percentage points and 4.7 mm lower than those of the continuous-operation cellar maker, respectively, indicating that the hole spacing uniformity of the intermittent-operation cellar maker was satisfactory and the degree of damage to the mulching film was small. The difference in the row straightness deviation between the two types of makers was small. Therefore, this intermittent-operation cellar maker can meet the agronomic requirements for well cellar production in hilly tobacco-growing areas.

     

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