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本文对机耕船叶轮轮叶型式及驱动面倾角的合理选取进行了理论分析和试验研究,提出采用“折面单叶片轮叶”的结构型式,并导出了设计折面轮叶的折转点及折转角的计算公式。对轮叶驱动面倾角的合理确定,提出应综合考虑轮叶入土和出土两个过程中轮叶压土和挑土两方面作用的观点,以及同时考虑使轮叶获得较大有效推进力出发来选取,导出了驱动面倾角(α)的理论计算公式。文中同时还简介了几种关于叶轮驱动面倾角的计算公式和计算值以供分析比较。 此外,本文给出了对不同驱动面倾角的变参数试验轮进行室内和田间试验的结果。 文中最后介绍了为机耕船设计的新型驱动轮——无轮缘折面叶片轮及其在田间与楔形轮进行对比试验的结果。 全文的理论分析和试验研究为机耕船驱动叶轮的设计和改进提供了一定的理论基础和试验依据。
In this paper, the theoretical analysis and experimental research on the reasonable choice of blade type and driving face inclination of the plow wheel are put forward. The structure type of “single leaf blade” is proposed and the turning point of the designed face blade is derived. Turn angle calculation formula. Reasonable determination of the impeller driving face inclination, put forward the viewpoint that should consider both the role of wheel lobe and soil pick-up in the two processes of soil entrapment and unearthed, and at the same time consider starting to make the buckets more effective propulsion The theoretical calculation formula of driving face inclination (α) is derived. In the meantime, several kinds of calculation formulas and calculated values about impeller driving surface inclination are also introduced for analysis and comparison. In addition, this paper gives the results of indoor and field tests on variable parameter test wheels with different driving face inclination. Finally, the article introduces the new driving wheel designed for cultivating machine - the wheel without flange folding leaf wheel and the result of contrast test between field wheel and wedge wheel. The full text of the theoretical analysis and experimental research for the design and improvement of the impeller drive tiller provides a theoretical basis and experimental basis.