湖北农业科学 ›› 2020, Vol. 59 ›› Issue (22): 166-169.doi: 10.14088/j.cnki.issn0439-8114.2020.22.034

• 农业工程 • 上一篇    下一篇

插秧机后桥齿轮断裂分析

陆伟安1, 冯天玉1, 郝文斌1, 程捷1, 黄世明1, 宫瑞1, 王本义2   

  1. 1.湖北工业大学机械学院,武汉 430068;
    2.湖北中轩科技有限公司,湖北 黄梅 435501
  • 收稿日期:2020-02-09 出版日期:2020-11-25 发布日期:2020-12-30
  • 通讯作者: 冯天玉,教授,高级工程师,硕士研究生导师,主要从事先进制造工艺与设备研究,(电话)13037131527(电子信箱)615971302@qq.com
  • 作者简介:陆伟安(1988-),男,广西贵港人,在读硕士研究生,研究方向为农业设备,(电话)17878125968(电子信箱)2273060723@qq.com

Fracture analysis of rear axle gear of rice transplanter

LU Wei-an1, FENG Tian-yu1, HAO Wen-bin1, CHENG Jie1, HUANG Shi-ming1, GONG Rui1, WANG Ben-yi2   

  1. 1. School of Mechanical Engineering,Hubei University of Technology,Wuhan 430068,China;
    2. Hubei Zhongxuan Technology Co.,Ltd.,Huangmei 435501,Hubei,China
  • Received:2020-02-09 Online:2020-11-25 Published:2020-12-30

摘要: 为解决插秧机机头后桥20CrMnTi渗碳齿轮的断裂问题,对断裂齿轮进行理论校核分析、材质检测、显微组织观察、硬度梯度检测、金属夹杂物检测、齿轮啮合动力学分析,开展了结构设计分析,建立了渗碳齿轮失效机理与强度的内在联系,并提出了齿轮在设计、工艺等方面的改进措施。结果表明,齿轮断裂属于轮齿折断,齿轮受到过载以及加工刀痕是齿轮断裂的主因,并给出了相应改进措施,从而在实际生产过程中避免类似事故发生。

关键词: 齿轮断裂, 动力学分析, 轮齿折断

Abstract: To solve the fracture problem of the20CrMnTi gear on the rear axle of the rice transplanter head,the broken gear is inspected for material quality,microstructure observation,hardness gradient detection,metal inclusion detection,and gear meshing dynamic analysis.The structural design analysis was carried out,and the internal relationship between the failure mechanism and strength of carburizing gear was established.The improvement measures of gears in design and technology were put forward.The results showed that the gear fracture is a tooth fracture,the gear is overloaded and the machining tool marks are the main reason of gear fracture.According to the analysis results and corresponding improvement measures were given to avoid similar accidents in the actual production process.

Key words: gear break, dynamic analysis, tooth break

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