1、 山地微耕机论文：山地微耕机若干部件的设计与牵引附着性能试验研究【中文摘要】由于山地地形复杂、耕地面积小而分散、地面高差大,使得农业机械在山地作业比在平原作业更困难;同时,由于山间道路窄小、崎岖不平,使得山地机械的运输也成为问题。近年来,研究开发山地用农业机械已成为中国农业工程界的研究重点。研究一种易操作、稳定性好、爬坡能力和越障能力均强的山地用农业机械,具有重要的实际价值。本论文针对山地机械存在稳定性不足等问题,依托陕西省烟草局项目“山地遥控微耕机的研究开发”,针对烟草种植地地势复杂、地形多变等特点,研发适于山地作业的山地微型耕地机,并完成若干部件的设计。在样机上进行牵引性能试验量化分析履带
2、结构参数对该机附着性能的影响,得出试验范围内的最优组合,为进一步改该机提供指导。本论文的主要研究内容如下:(1)针对山地作业环境的特点,在原 1YG 型果园清耕机的基础上,设计带有液压调平装置的履带式行走系。(2)设计能够平衡偏牵引力的双向平衡铲。(3)完成液压系统设计计算,以及液压元件的选型。(4)对整机进行三维造型,为该机零部件的有限元分析和进一步改进提供一个平台。(5)完成山地微耕机的样机试制。(6)进行牵引附着性能试验,研究履带结构参数对该机附着性能的影响。通过设计正交试验,研究该山地微耕机的履带结构参数包括履带宽度,履带支承段长度和履刺对于整机牵引附着性能的影响,并获得试验范围内这三
3、个参数的最优组合。试验结果表明履刺对于附着力的影响最大,履刺的存在能够提高附着力达26.64%;获得履带结构参数的最佳组合为:履带支承段长度 1020mm,履带宽度为 125mm,履刺高度为 28mm。该机的主要指标为:离地间隙在 136-336mm 之间可调,耕幅 30cm,设计耕深 25cm,最大牵引力3300N。【英文摘要】The research on the agricultural machines which applied in the areas of hillside has become one of the significant and difficult point
4、s in the field of the Chinese Agricultural Engineering. Confined by its complicated operation environment, the transportation and application of this kind of machine is an unsettled problem.This paper commissioned by the Department of Tobacco in Shaanxi dedicates to design a mountainous micro-cultiv
5、ator which combines technical of hydraulic, agricultural machinery and digital design and manufacture, which aimed at accommodating the environment where the tobacco grows. Through conducting a tractive and adhesion performance test analysis the date quantificational, find out the optimal combinatio
6、n of the crawler structural parameter. The main research content of this paper lists as follows:（1） The chassis of this micro-cultivator employed the chassis of the 1YG type orchard mini-tiller, at the same time combined its running system with Hydraulic balance adjust equipment.（2） Working parts ut
7、ilize a bidirectional balance shovel based on parallelogram mechanism to accommodate the working environment of mountain.（3） Complete calculation, design and model selection of the hydraulic system of the micro-cultivator based on the theory of the hydraulic system.（4） Molding parts and components o
8、f the whole micro-cultivator utilize Pro/E in order to provide a platform for the further analysis via Analysis software and improve of this machine.（5） A prototype mountainous micro-cultivator was complicated based on the design and calculation.（6） The test of tractive performance was conducted. At
9、 the same time an orthogonal experiment was designed and conducted in order to find out the effects caused by changing the crawler structural parameter which includes Track Shoe Width （b）, Caterpillar Supporting Section Length （L0） and Track Shoe Grouser （h） on the adhesion performance. Through anal
10、ysis the date quantificational, find out the optimal combination. The result indicates that Track Shoe Grouser plays a crucial role in improving adhesion performance. Because of its exits the adhesion performance enhanced by 26.64%, the optimal combination in trial stretch is: b =125mm, L0=1020mm, h
11、=28mm.The check index were listed as follows: ground clearance from 136 to 336mm, working width 30cm, designed tilling depth 25cm, maximum tractive force 3300N, Therefore theoretical basis is provided for caterpillar tread design of this kind of tractor.【关键词】山地微耕机 液压调平装置 牵引试验【英文关键词】Mountainous micro
12、-cultivator Hydraulic balance adjust equipment Adhesion performance test【目录】山地微耕机若干部件的设计与牵引附着性能试验研究 摘要 6-7 ABSTRACT 7-8 第一章 绪论 11-15 1.1 选题的背景与意义 11-14 1.1.1 山地微耕机的应用现状与研究概况 11-13 1.1.2 选题的目的及意义 13-14 1.2 课题的主要研究内容 14 1.3 本章小结 14-15 第二章 山地微耕机若干部件的设计 15-23 2.1 引言 15 2.2 山地微耕机的结构特点 15-17 2.3 若干部件设计 17
13、-22 2.3.1 行走系设计 17-20 2.3.2 作业部件设计 20-22 2.4 本章小结 22-23 第三章 山地微耕机液压系统设计 23-30 3.1 引言 23 3.2 工作要求 23 3.3 系统工作原理分析 23-25 3.4 执行缸参数确定 25-26 3.5 确定液压泵的规格 26-27 3.6 电动机的选择 27-28 3.7 液压阀的选择 28-29 3.8 本章小结 29-30 第四章 山地微耕机的三维造型与样机试制 30-36 4.1 引言 30 4.2 整机三维造型 30-32 4.3 样机试制 32-35 4.4 本章小结 35-36 第五章 山地微耕机牵引附着性能试验 36-57 5.1 引言 36 5.2 试验方案设计 36-38 5.3 试验装置与试验条件 38-40 5.4 结果及分析 40-56 5.5 结论 56 5.6 本章小结 56-57 第六章 结论与展望 57-59 6.1 结论 57 6.2 展望 57-59 参考文献 59-61 附录 61-69 致谢 69-70 作者简介 70
