| 正反螺旋式土壤改良石灰播撒机设计与试验 |
| |
| 引用本文： | 高自成,李立君,阳涵疆,祝强,周鹰,闵淑辉.正反螺旋式土壤改良石灰播撒机设计与试验[J].农业工程学报,2015,31(10):43-50. |
| |
| 作者姓名： | 高自成 李立君 阳涵疆 祝强 周鹰 闵淑辉 |
| |
| 作者单位： | 中南林业科技大学机电工程学院，长沙 410004,中南林业科技大学机电工程学院，长沙 410004,中南林业科技大学机电工程学院，长沙 410004,中南林业科技大学机电工程学院，长沙 410004,中南林业科技大学机电工程学院，长沙 410004,中南林业科技大学机电工程学院，长沙 410004 |
| |
| 基金项目： | 湖南省农产品产地重金属污染防治专项支持（2013090461）；湖南省高校科技创新团队支持计划（2014207） |
| |
| 摘 要： | 为了提高石灰播撒的效率和精准控制播撒量,研制了正反螺旋式石灰播撒机,并与旋耕机组合成一体机,采用复合作业方式。该文论述了正反螺旋式石灰播撒机的结构和工作原理、灰量调节机构原理和调节方法,并对播撒机的出灰口尺寸和播撒辊的转速进行了试验设计,计算了播撒机的总功率;最后将石灰播撒旋耕机一体机在冬天的稻田进行石灰播撒-旋耕组合的田间试验。结果表明:当石灰播撒-旋耕一体机前进速度平均为5 km/h,播撒辊转速为80 r/min,调节机构档位处于最大播撒量的13档时,满足第1年的播撒量要求;当档位分别位于12档(或10档)和7档时,播撒量分别满足第2年和第3年的播撒量要求。该研究为改善农业作业条件、降低劳动力成本、提高石灰播撒效率提供了参考。
|
| 关 键 词： | 农业机械 机械化 设计 正反螺旋 石灰播撒机 功率计算 |
| 收稿时间： | 2015/1/15 0:00:00 |
| 修稿时间： | 4/7/2015 12:00:00 AM |
Design and experiment of pros spiral lime spreading machine |
| |
| Gao Zicheng,Li Lijun,Yang Hanjiang,Zhu Qiang,Zhou Ying and Min Shuhui.Design and experiment of pros spiral lime spreading machine[J].Transactions of the Chinese Society of Agricultural Engineering,2015,31(10):43-50. |
| |
| Authors: | Gao Zicheng Li Lijun Yang Hanjiang Zhu Qiang Zhou Ying and Min Shuhui |
| |
| Institution: | Mechanical and Electrical Engineering Institute,Central South University of Forestry and Technology, Changsha 410004, China,Mechanical and Electrical Engineering Institute,Central South University of Forestry and Technology, Changsha 410004, China,Mechanical and Electrical Engineering Institute,Central South University of Forestry and Technology, Changsha 410004, China,Mechanical and Electrical Engineering Institute,Central South University of Forestry and Technology, Changsha 410004, China,Mechanical and Electrical Engineering Institute,Central South University of Forestry and Technology, Changsha 410004, China and Mechanical and Electrical Engineering Institute,Central South University of Forestry and Technology, Changsha 410004, China |
| |
| Abstract: | With the continuous development of industry, environment pollution such as soil acidification and heavy metal pollution of soil becomes increasingly serious, especially in the acidic soil region of southern China. Liming is a traditional and effective method to improve acidic soil. Manual spreading is a kind of traditional method of liming, but it is inefficient and has some side effects like skin damage of workers because of the corrosive property of lime. In order to solve the deficiencies of manual liming and compensate the technology gap of liming machine between domestic and overseas market, we designed a lime spreading machine which was able to be assembled with other agricultural machinery to become combined machine. The development of liming machine has great significance to improve liming efficiency and working conditions. This paper discussed the structure and working principle of the pros spiral lime spreading machine. The machine used the spread roller which was similar to the structure of pros spiral as working parts, used the overlapped waist-shaped hole as the lime spreading outlet, and controlled the waist-shaped hole overlapping area through adjusting assembly to adjust the lime spreading amount. Through experiment we determined the lime outlet size and the lime spreading roller's rotation speed of the lime spreading machine, and experiment results showed that: Firstly, when the lime spreading roller speed was below 125 turn per minute, for the same waist-shaped lime spreading outlet, the lime spreading amount per turn of lime spreading roller could be treated as a constant value, i.e. the spreading amount and lime spread roller's rotation speed were in a linear relationship; Secondly, when the number of lime spreading plate was 40, the hole was waist-shaped hole with the size of 25 mm×10 mm and the rotation speed of the roller was in 120 turn per minute, we got the lime spreading amount of 1 500 kg/h which met the maximum requirements of lime spreading. Considering the linear relationship between the lime spreading amount and the number of lime spreading hole, and the complex conditions after assembled with rotary cultivator, we increased the number of the waist-shaped hole and decreased the rotation speed of lime spreading roller meanwhile kept the lime spreading speed unchanged, and at last determined the lime spreading hole number to be 60 and the roller's rotation speed to be 80 turn per minute as the optimal scheme. We also analyzed the power consumption condition of the lime spreading process and calculated the total power consumption of the working process. Finally, the field test of the lime spreader was carried out, which was conducted in the dry paddy field. Field test results showed that, under the conditions of the lime spreading cultivator at a speed of 5 km per hour, the lime spreading roller at a speed of 80 turn per minute and the overlapping area of the lime spreading hole at maximum size, when the adjusting bar of adjusting mechanism was located in Location XIII, the lime spreading amount reached 1 566.7 kg per hectare. When the adjusting bar of adjusting mechanism were located in Location XII, X and VII, respectively, the lime spreading amounts met the demands of annual lime spreading amount for the first, second and third year, respectively; and when the adjusting bar was at Location II, lime spreading machine almost closed all the lime spreading holes. |
| |
| Keywords: | agriculture machinery mechanization design positive and negative screw roller lime spreading machine calculate of driving power |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《农业工程学报》浏览原始摘要信息 |
| 点击此处可从《农业工程学报》下载免费的PDF全文 |
|
