摘 要
随着农业现代化的推进，小型农用拖拉机作为重要农机装备，其性能优化与结构改进对提升农业生产效率具有重要意义。本研究针对现有小型农用拖拉机在动力传输、作业稳定性及操作便捷性方面的不足，以某型号拖拉机为研究对象，通过有限元分析、多目标优化设计及仿真验证等方法，对其关键部件进行结构优化设计具体而言，通过对传动系统进行轻量化改进，提升了动力传输效率；优化底盘结构参数，增强了整机的稳定性和适应性；同时引入人机工程学原理，改善了操控系统的布局和舒适性经试验验证，优化后的拖拉机在同等工况下表现出更高的燃油经济性和更低的故障率，作业效率提升约15%，显著降低了运行成本此外，本研究提出的模块化设计理念为后续机型开发提供了参考，有效缩短了设计周期研究成果不仅为小型农用拖拉机的结构改进提供了技术支撑，还为同类农机产品的性能提升探索了可行路径
关键词：小型农用拖拉机；结构优化设计；动力传输效率；作业稳定性；人机工程学
Research on Structural Optimization Design of Small Agricultural Tractors
ABSTRACT
With the advancement of agricultural modernization, small agricultural tractors, as essential agricultural machinery, play a critical role in enhancing agricultural productivity. This study focuses on the existing deficiencies of small tractors in power transmission, operational stability, and ease of operation, selecting a specific tractor model as the research subject. Through methods such as finite element analysis, multi-ob jective optimization design, and simulation validation, structural optimization was performed on key components. Specifically, lightweight improvements to the transmission system enhanced power transfer efficiency; optimization of the chassis structural parameters improved the overall stability and adaptability of the machine; and the introduction of ergonomics principles refined the layout and comfort of the control system. Experimental verification demonstrated that the optimized tractor exhibited superior fuel economy and reduced failure rates under identical operating conditions, with an approximately 15% increase in operational efficiency, significantly lowering running costs. Furthermore, the modular design concept proposed in this study provides valuable reference for subsequent model development, effectively shortening the design cycle. The research findings not only offer technical support for structural improvements in small agricultural tractors but also explore feasible approaches for performance enhancement in similar agricultural machinery products.
KEY WORDS：Small Agricultural Tractor；Structural Optimization Design；Power Transmission Efficiency；Operation Stability；Ergonomics
目 录
摘 要 I
ABSTRACT II
第一章 绪论 1
1.1 小型农用拖拉机结构优化的研究背景与意义 1
1.2 国内外小型农用拖拉机结构优化研究现状 1
第二章 小型农用拖拉机的结构分析与问题识别 1
2.1 拖拉机主要结构组成及其功能分析 2
2.2 当前结构设计中的关键问题探讨 2
2.3 结构优化的需求与目标设定 2
第三章 小型农用拖拉机结构优化的设计方法研究 3
3.1 优化设计的基本原理与技术框架 3
3.2 关键部件的结构改进策略研究 3
3.3 整体结构优化的设计方案制定 4
第四章 小型农用拖拉机结构优化的仿真与验证 4
4.1 仿真模型的构建与参数设置 4
4.2 优化效果的模拟分析与评估 5
4.3 实验验证与结果讨论 5
结 论 6
参考文献 7
致 谢 8
随着农业现代化的推进，小型农用拖拉机作为重要农机装备，其性能优化与结构改进对提升农业生产效率具有重要意义。本研究针对现有小型农用拖拉机在动力传输、作业稳定性及操作便捷性方面的不足，以某型号拖拉机为研究对象，通过有限元分析、多目标优化设计及仿真验证等方法，对其关键部件进行结构优化设计具体而言，通过对传动系统进行轻量化改进，提升了动力传输效率；优化底盘结构参数，增强了整机的稳定性和适应性；同时引入人机工程学原理，改善了操控系统的布局和舒适性经试验验证，优化后的拖拉机在同等工况下表现出更高的燃油经济性和更低的故障率，作业效率提升约15%，显著降低了运行成本此外，本研究提出的模块化设计理念为后续机型开发提供了参考，有效缩短了设计周期研究成果不仅为小型农用拖拉机的结构改进提供了技术支撑，还为同类农机产品的性能提升探索了可行路径
关键词：小型农用拖拉机；结构优化设计；动力传输效率；作业稳定性；人机工程学
Research on Structural Optimization Design of Small Agricultural Tractors
ABSTRACT
With the advancement of agricultural modernization, small agricultural tractors, as essential agricultural machinery, play a critical role in enhancing agricultural productivity. This study focuses on the existing deficiencies of small tractors in power transmission, operational stability, and ease of operation, selecting a specific tractor model as the research subject. Through methods such as finite element analysis, multi-ob jective optimization design, and simulation validation, structural optimization was performed on key components. Specifically, lightweight improvements to the transmission system enhanced power transfer efficiency; optimization of the chassis structural parameters improved the overall stability and adaptability of the machine; and the introduction of ergonomics principles refined the layout and comfort of the control system. Experimental verification demonstrated that the optimized tractor exhibited superior fuel economy and reduced failure rates under identical operating conditions, with an approximately 15% increase in operational efficiency, significantly lowering running costs. Furthermore, the modular design concept proposed in this study provides valuable reference for subsequent model development, effectively shortening the design cycle. The research findings not only offer technical support for structural improvements in small agricultural tractors but also explore feasible approaches for performance enhancement in similar agricultural machinery products.
KEY WORDS：Small Agricultural Tractor；Structural Optimization Design；Power Transmission Efficiency；Operation Stability；Ergonomics
目 录
摘 要 I
ABSTRACT II
第一章 绪论 1
1.1 小型农用拖拉机结构优化的研究背景与意义 1
1.2 国内外小型农用拖拉机结构优化研究现状 1
第二章 小型农用拖拉机的结构分析与问题识别 1
2.1 拖拉机主要结构组成及其功能分析 2
2.2 当前结构设计中的关键问题探讨 2
2.3 结构优化的需求与目标设定 2
第三章 小型农用拖拉机结构优化的设计方法研究 3
3.1 优化设计的基本原理与技术框架 3
3.2 关键部件的结构改进策略研究 3
3.3 整体结构优化的设计方案制定 4
第四章 小型农用拖拉机结构优化的仿真与验证 4
4.1 仿真模型的构建与参数设置 4
4.2 优化效果的模拟分析与评估 5
4.3 实验验证与结果讨论 5
结 论 6
参考文献 7
致 谢 8
