文献类型： 外文期刊

作者： Wang, Lingling ¹ ; Huang, Chang ¹ ; Li, Tuyu ¹ ; Cao, Jianhua ¹ ; Zheng, Yong ¹ ; Huang, Jiajian ³ ;

作者机构： 1.Chinese Acad Trop Agr Sci, Rubber Res Inst, Haikou 571101, Peoples R China

2.Natl Important Trop Crop Engn Technol Res Ctr, Mech Sub Ctr, Haikou 571101, Peoples R China

3.Chinese Acad Trop Agr Sci, Inst Sci & Tech Informat, Haikou 571101, Peoples R China

4.Key Lab Appl Res Trop Crop Informat Technol Hainan, Haikou 571101, Peoples R China

关键词： Hevea brasiliensis; rubber tapping management; old rubber line; hand-held mechanical tapping machine; optimization design; tapping effect

期刊名称：FORESTS （ 影响因子：2.9； 五年影响因子：3.0 ）

ISSN：

年卷期： 2023 年 14 卷 12 期

页码：

收录情况： SCI

摘要： All-natural rubber is harvested from rubber trees (Hevea brasiliensis Muell. Arg.) by traditional tapping knives, so rubber tapping still heavily relies on labor. Therefore, this study explored a novel, hand-held mechanical rubber tapping machine for rubber tree harvesting. In this study, a mechanical tapping cutter with a vertical blade and adjustable guide was first described. The response surface method was applied to evaluate factors affecting the tapping effect. The experimental values were in close agreement with the predicted value. Machine-tapped latex was comparable in quality to hand-tapped latex. Based on the single-factor results, the response surface method (RSM) and the center combined rotation design (CCRD) optimization method were adopted to explore the influence of three factors influencing vertical blade height (A), cutting force (B), and spiral angle (C) on the tapping effect. Regarding the cutting rate of the old rubber line (Y-1), cutting time (Y-2), latex flow rate (Y-3), and average cutting current (Y-4) as evaluation indexes of the tapping effect, an optimization scheme was determined. The quadratic model fits for all the responses. The test results showed that the main factors affecting Y-1, Y-2, Y-3, and Y-4 were A and B, B, A and C, and B, respectively. Under optimal conditions, the influencing factors of A, B, and C were 10.24 mm, 51.67 N, and 24.77 degrees, respectively, when the evaluation index values of Y-1, Y-2, Y-3, and Y-4 were 98%, 8.65 mL/5 min, 9.00 s, and 1.16 A. The range of the relative error between the experimental and predicted results was from -11.11% to 11.11%. According to the optimized treatment scheme, a comparison test was designed between mechanical and manual rubber tapping tools. To verify the availability and effect of the mechanical tapping method preliminarily, the important rubber tapping evaluation indexes included bark thickness, bark excision, latex flow time, cutting time, ash content, and cutting depth, which were selected to serve as a comparison test. There was no significant difference between hand and mechanical methods, except ash content (p < 0.05) and cutting time (p < 0.01). The mechanical tapping machine proposed in this study is meaningful to improve cutting efficiency, practicality, and operability. Furthermore, it provides crucial theoretical references for the development of intelligent tapping machines.