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毕业设计-9gzx型旋转式割草机设计，共37页，11657字，附任务书、Autocad设计图纸、三维设计图纸（Pro/E）等
1、查询有关9GZX型旋转式割草机技术方面的资料，消化资料，完成开题报告。
2、熟悉9GZX型旋转式割草机的传动及进给系统结构，测量有关参数，提出设计思路。
3、完成9GZX型旋转式割草机的整体方案设计，并完成设计图。
4、完成各部件的设计及主要零件的设计；
5、完成9GZX型旋转式割草机的设计
摘 要
割草机的发展方向将是向高科技化方向发展，制造出适用性强的割草机很有发展市场，对不同地区开发出不同的割草机是很有发展前途的。由此，相应的制造出高性能的割草机是国外收获机的发展概况。该割草机可一次性完成割草、割草、分离和装袋作业。该机体积小、重量轻，操作灵活，通过性与适应性好，较好地解决了大、中型割草机在丘陵、山区和水田难以割草的难题。割草的发展方向将是向高科技化方向发展，制造出适用性强的割草很有发展市场，对不同地区开发出不同的割草是很有发展前途的。由此，相应的制造出高性能的割草是国外收获机的发展概况。该割草割草可一次性完成拉伸、割草、分离和装袋作业。该机体积小、重量轻，操作灵活，通过性与适应性好，较好地解决了大、中型割草在丘陵、山区和水田难以拉伸的难题。割草试验机适用于航空航天、石油化工、机械制造、金属材料及制品、电线电缆、橡塑胶、纸品及彩印包装、胶粘带、箱包手袋、纺织纤维、食品、制药等行业。可测试各种材料及成品、半成品的拉、压、弯、剪等物理性能，选购各种不同的夹具可做抗拉、抗压、持拉、持压、抗弯、撕裂、剥离、黏着力、剪力等试验。拉伸试验是指在承受轴向拉伸载荷下测定材料特性的试验方法。利用拉伸试验得到的数据可以确定材料的弹性极限、伸长率、弹性模量、比例极限、面积缩减量、拉伸强度、屈服点、屈服强度和其它拉伸性能指标。从高温下进行的拉伸试验可以得到蠕变数据。金属拉伸试验的步骤可参见ASTM E-8标准。塑料拉伸试验的方法参见ASTM D-638标准、D-2289标准（高应变率）和D-882标准（薄片材）。ASTM D-2343标准规定了适用于玻璃纤维的拉伸试验方法；ASTM D-897标准中规定了适用于粘结剂的拉伸试验方法；ASTM D-412标准中规定了硬橡胶的拉伸试验方法。1.准备试件。用刻线机在原始标距?范围内刻划圆周线（或用小钢冲打小冲点），将标距内分为等长的10格。用游标卡尺在试件原始标距内的两端及中间处两个相互垂直的方向上各测一次直径，取其算术平均值作为该处截面的直径，然后选用三处截面直径的最小值来计算试件的原始截面面积
关键词：割草机；割草； 改进设计
Abstract
The development direction of harvester will be to high-tech direction, making out the applicability of harvester is the development of the market, is very promising for different regions developed different harvester. Thus, the corresponding manufacturing combine high performance is the development of foreign harvester. The development direction of harvester will be to high-tech direction, making out the applicability of harvester is the development of the market, is very promising for different regions developed different harvester. Thus, the corresponding manufacturing combine high performance is the development of foreign harvester. The rice combine harvester can complete harvesting, threshing, separation and bagging operations at one time. The development direction of harvester will be to high-tech direction, making out the applicability of harvester is the development of the market, is very promising for different regions developed different harvester. The development direction of harvester will be to high-tech direction, making out the applicability of harvester is the development of the market, is very promising for different regions developed different harvester. Thus, the corresponding manufacturing combine high performance is the development of foreign harvester. The rice combine harvester can complete harvesting, threshing, separation and bagging operations at one time. The machine has the advantages of small volume, light weight, flexible operation, through and good adaptability, can better solve the problem of big, medium-sized harvester to harvest in the hilly, mountainous and paddy field.Thus, the corresponding manufacturing combine high performance is the development of foreign harvester. The rice combine harvester can complete harvesting, threshing, separation and bagging operations at one time. The machine has the advantages of small volume, light weight, flexible operation, through and good adaptability, can better solve the problem of big, medium-sized harvester to harvest in the hilly, mountainous and paddy field. The machine has the advantages of small volume, light weight, flexible operation, through and good adaptability, can better solve the problem of big, medium-sized harvester to harvest in the hilly, mountainous and paddy field.The rice combine harvester can complete harvesting, threshing, separation and bagging operations at one time. The machine has the advantages of small volume, light weight, flexible operation, through and good adaptability, can better solve the problem of big, medium-sized harvester to harvest in the hilly, mountainous and paddy field.
Key Words: rice thresher threshing; improved design;
目 录
摘 要 III
Abstract IV
目 录 V
第1章 绪论 1
第2章 总体方案确定 2
2.1 割草机工作原理 2
2.2割草机总体设计 3
2.2.1割草机的类型定位 3
2.2.2 割草机的整机结构及选择 3
2.2.3 割草机的工作流程 3
第3章 割草机设计 4
3.1 割草原理 4
3.2 割草机类型选择 4
第4章 动力的选择 6
4.1 整机消耗的功率计算 6
4.1.1 割草机的功率消耗的计算 6
4.1.2 清选装置的功率消耗的计算 6
4.2 柴油机的选择 7
第5章 传动装置设计 8
5.1 传动路线 8
5.2 确定传动装置的传动比 8
5.3 传动装置动力参数的计算 8
5.4 皮带轮的设计与计算 9
5.5 验算小带轮的包角 10
5.6 确定V带根数 10
5.7 单根V带预紧力的计算 10
5.8 计算压轴力 11
第6章 齿轮的设计与计算 12
6.1 材料的选择及许用应力的确定 12
6.2 按轮齿接触强度的计算 12
6.3 按齿根弯曲强度设计 13
第7章 轴的设计与计算 15
7.1 轴的材料选择 15
7.2 轴的最小直径确定 15
7.3 轴的结构设计 15
7.4 轴的校核 16
第8章 键连接选择 19
第9章 滚动轴承选用 20
9.1 滚动轴承校核 20
9.2 割草滚筒转速计算 21
9.3 滚筒直径计算 21
9.4 割草滚筒长度确定 22
第10章 割草机其他部分设计 23
10.1 滚筒割草齿设计 23
10.1.1 弓齿形状选择 23
10.1.2 弓齿的排列 23
10.1.3 相关参数的计算 23
10.2凹板的设计 24
10.2.1 凹板类型的确定 24
10.2.2 凹板直径的确定 24
10.2.3 凹板与滚筒之间间隙的确定 25
结论 26
参考文献 27
致 谢 28