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| Wear analysis on bucket tooth of WK-75 mining excavator |
| ZHANG Yan-qiang1, LI Xiu-hong1, REN Jia-jun1, TAN Bin2 |
1. College of Mechanical Engineering, Taiyuan University of Technology, Taiyuan 030024, China;
2. Technology Center, Taiyuan Heavy Industry Co., Ltd., Taiyuan 030024, China |
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Abstract To explore the wear law of WK-75 mining excavator bucket tooth in terms of the size and the physical properties of the material, a three-dimensional parametric model of bucket and arm was established by UG and was imported into a finite element software. By the simulation analysis of bucket digging along the ideal digging track, the main wear parts of bucket was identified. The result was consistent with the actual situation, verifying the correctness of the model. Then the wear law of bucket tooth was explored from the aspect of density, hardness, size and shape of the material. The research work showed that the average wear depth of bucket tooth increased with the increase of density, hardness, particle size and sharp degree of the material, providing a certain reference for optimizing bucket structure from the term of reducing bucket tooth wear subsequently.
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Received: 07 April 2015
Published: 28 October 2015
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WK-75型矿用挖掘机斗齿的磨损分析
为了从物料粒度和物理特性方面探究WK-75型矿用挖掘机斗齿的磨损规律，采用UG软件建立铲斗和斗杆装配后的三维参数化模型，并将其导入离散元软件中，对铲斗沿理想挖掘轨迹挖掘进行了磨损仿真分析，找出了铲斗的主要磨损部位，与实际结果相符，验证了模型的正确性.并从物料的密度、硬度、大小和形状等方面探究了斗齿的磨损规律.研究表明，斗齿的平均磨损深度随着物料的密度、硬度、粒径和棱角尖锐度的增加而增大，为后续从减少斗齿磨损方面优化铲斗结构提供了一定的参考.
关键词：
斗齿,
磨损,
UG,
参数化,
离散元
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