摘要
为解决传统构型拖拉机普遍存在的作业过程总体能效偏低、驱动轮牵引力分配不可调控以致环境适应性不强、换挡过程动力中断等一系列问题,基于TRIZ理论设计了一种新构型的混合动力拖拉机动力系统。首先,分析并建立了传统拖拉机存在的换挡动力中断、驱动轮打滑等关键问题的“物-场模型”;其次,采用“冲突解决原理”解决拖拉机动力系统设计过程中涉及的矛盾冲突,并结合发明原理获取合适的矛盾冲突解决方案,明确了拖拉机动力系统的具体架构,获得了拖拉机动力系统创新设计的最终优化方案;最后,为验证本文拖拉机动力系统优化方案的可行性与优越性,针对传统拖拉机和新型拖拉机动力系统进行了仿真分析,并完成了样机试制与功能验证。该构型同时具备分布式驱动和混合动力驱动双重优点,实现了拖拉机各驱动轴间动力输出解耦。根据仿真实验及样机试验可知,优化后拖拉机具有较好的节能效果和更多的驱动模式。通过对现有拖拉机动力系统优化设计实例进行分析,为新能源拖拉机动力系统构型设计提供了理论依据和方法支撑,本文分布式混合动力拖拉机系统架构可为拖拉机全程高效牵引作业提供新思路。
Tractors with traditional architecture generally have a series of problems,such as low energy efficiency,difficulty in traction control,power interruption during gear shifting and so on.This paper designs a new architecture of the tractor powertrain system based on TRIZ theory to solve these problems.Firstly,the paper analyzes and establishes the"substance-field model"of key problems such as power interruption during gear shifting,and sliding of the driving wheel of tractors with traditional architecture,etc.Then,the"conflict solving principle"is adopted to solve the conflicts involved in the design of the tractor powertrain system,and the final optimization scheme of the tractor powertrain system innovative design is obtained.Finally,the feasibility of the proposed architecture is verified by simulation tests and prototype tests.This new powertrain system has the dual advantages of distributed drive and hybrid drive,and the power output of each drive shaft of the tractor is decoupled.The optimized tractor has a better energy-saving effect and more drive modes.This paper provides the theoretical basis for the architecture design of a tractor powertrain system,and the distributed hybrid electric tractor system architecture can provide a new idea for the efficient operation of tractors.
作者
李金凤
张学敏
宋正河
武秀恒
LI Jin-feng;ZHANG Xue-min;SONG Zheng-he;WU Xiu-heng(College of Engineering,China Agricultural University,Beijing 100083,China)
出处
《吉林大学学报(工学版)》
北大核心
2025年第1期366-381,共16页
Journal of Jilin University:Engineering and Technology Edition
基金
国家重点研发计划项目(2022YFD2001202)。
关键词
农业工程
混合动力拖拉机
TRIZ理论
动力系统
优化设计
agricultural engineering
hybrid electric tractor
TRIZ Z theory
powertrain system
optimization design
