灌木割灌机传动装置的抗冲击承载特性  

Numerical Analysis of Impact Bearing Characteristics of Gear Transmission Device in Brush Cutter

作　　者：吉淑娥 杨德岭 董喜斌 Ji Shue;Yang Deling;Dong Xibin(Key Laboratory of Forest Sustainable Management and Environmental Microorganism Engineering of Heilongjiang,Northeast Forestry University,Harbin 150040,P.R.China)

机构地区：[1]森林持续经营与环境微生物工程黑龙江省重点实验室(东北林业大学),哈尔滨150040

出　　处：《东北林业大学学报》2021年第12期144-149,共6页Journal of Northeast Forestry University

基　　金：黑龙江工程学院青年基金项目(2015QJ02);黑龙江省应用技术开发与研究项目(GA19C006)。

摘　　要：以接骨木、水冬瓜、山丁子、榛材、柳木5种灌木树种为割灌对象;在吉林省白山市临江林业局大西林场设置试验场地,规划出25 m×25 m样地共计15个,每个样地的灌木数量为12棵左右,使用测量工具测试灌木的树高、地径、中部及根部的硬度。依据实际运行工况,采用有限元仿真方法优化割灌机齿轮传动装置,提出抗冲击特性分析方法,解析交替啮合齿轮抗冲击特性表征。结果表明:3个方向冲击载荷的作用,垂向加载时产生的冲击应力最大,横、纵向次之,应力较大值出现在上箱体顶板、下箱体侧板、上箱体支撑筋板部位,是齿轮传动装置设计时需要重点考虑的危险区域。In the tending felling of secondary forest and artificial forest,due to the different shrub species,diameter class and standing clearance,the working conditions of harvesting are complex,which will inevitably lead to the alternating load on the gear transmission system of brush cutter.From the actual operating conditions,we uses the finite element simulation method to optimize the gear transmission device of the brush cutter,puts forward the analysis method of impact resistance characteristics,and analyzes the characterization of impact resistance characteristics of alternating meshing gears.Under the impact load in three directions,the response is the most intense under vertical loading,followed by transverse loading,and the larger value of stress response appears on the top plate of the upper box.The side plate of the lower box and the supporting rib plate of the upper box can be considered as the key in the design of dangerous areas.

关 键 词：灌木 割灌机 齿轮传动装置 抗冲击特性 

分 类 号：S776.2[农业科学—森林工程]