橡胶履带牵引车辆改进设计高速行走机构Word文件下载.docx

1、RUBBER TRACK TRACTOR DESIGN （HIGH SPEED WALKING） ABSTRACT In recent years, China has made rapid economic development, agricultural modernization has been further improved .After entering the 21st century, countries more noted the importance of agriculture, adopted a series of preferential policies t

2、o support the development of agricultural machinery.China is a large agricultural country, a tractor manufacturing and use of the quantity has been in the forefront of the world. However, its technical content and the wide gap between the developed countries in terms of changing the backward machine

3、ry, To improve efficiency and performance and further improve the power and economy of our country is of great significance, on the strategy of sustainable development has far-reaching impact.Crawler tractor from the Department of crawler devices and suspension components, including the installation

4、 of crawler tracks, driving wheel, supporting wheels, Roller, Tension round and tension device; Suspension includes the connection tractor rack and support all the wheels framework.Crawler device design requirements is to ensure that the main tractor attachment performance, lower ground pressure, re

5、duced rolling resistance, Parts raise life expectancy. Suspension design requirements is to ensure that the tractor ride comfort and stability. Keywords : Tracked driving wheel supporting wheels Roller Tension round and tension device 符号说明 拖拉机使用重量 T 地面附着系数 一般取=1.0 支重轮滚动表面直径 拖链轮轮缘直径 弹性模量 N/ 驱动轮节圆直径 驱

6、动轮齿顶圆直径 驱动轮齿根圆直径 履带节距 履带销套外径 驱动轮工作齿数 驱动轮轮齿数 重力加速度 =9.8 m/s 每侧支重轮个数 履带前倾角 履带后倾角第一章 前言5第二章 履带行走系的总体设计72.1履带行走系的总体设计2.2 履带行走系类型的选择2.3 整体台车行走系总体设计82.4平衡台车行走系总体设计92.5其它台车行走系总体设计102.6动力性能估计11第三章 悬架的设计123.1履带车辆的悬架机构3.2 整体台车行走系悬架结构3.2.1半钢性悬架机构3.2.2 刚性悬架和弹性悬架结构133.3平衡台车行走系悬架机构3.3.1悬架结构3.3.2 悬架性能参数的选择14第四章 履带

7、行走系结构与选择154.1驱动轮的位置4.2引导轮的位置4.2 引导轮的位置4.4托链轮的个数和位置164.5方案设计第五章 履带行走装置185.1 履带技术要求5.2 履带类型5.3 履带尺寸确定195.4 履带的校核225.5 履带的尺寸确定和校核23第六章 驱动轮266.1驱动轮齿形设计6.2驱动轮的结构设计6.3凹齿齿形的设计计算276.4驱动轮轴各项尺寸的确定286.5 驱动轮强度校核29第七章 支重轮307.1结构设计7.2各项尺寸的确定317.3支重轮各个构件的选择327.4支重轮强度验算第八章 张紧轮及张紧装置348.1 张紧轮8.2 张紧度调整机构358.3 缓冲弹簧368.4 零件强度计算37第九章 托链轮38第十章 结论39致谢40参考文献41 第一章 前言在拖拉机制造的多年发展历史中，行走系的技术进步和水平一直处于举足轻重的地位。拖拉机性能的好坏，不仅取决于发动机，而且很大程度