| 门式起重机变速机轴断裂分析 |
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| 引用本文： | 魏兴钊,钟喜春,朱伟恒,焦东玲,许麟康.门式起重机变速机轴断裂分析[J].理化检验(物理分册),2008,44(3):157-161. |
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| 作者姓名： | 魏兴钊 钟喜春 朱伟恒 焦东玲 许麟康 |
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| 作者单位： | 华南理工大学,机械工程学院,广州,510640 |
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| 摘 要： | 大型门式起重机因变速机轴断裂致使起吊物料下坠而造成安全生产事故。通过宏观和微观分析方法对变速机轴断裂原因进行了分析，结果表明，变速机轴在长期服役运行过程中，因局部疲劳开裂并扩展而引发了瞬间脆性断裂，其断裂与轴的制造质量不高和长达50a（年）的服役时间有关。
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| 关 键 词： | 门式起重机 变速机轴 疲劳断裂 脆性断裂 |
| 文章编号： | 1001-4012(2008)03-0157-05 |
| 修稿时间： | 2007年2月9日 |
FRACTURE ANALYSIS OF THE VARIABLE-SPEED MOTOR SHAFT OF THE GANTRY CRANE |
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| WEI Xing-zhao,ZHONG Xi-chun,ZHU Wei-heng,JIAO Dong-ling,XU Lin-kang.FRACTURE ANALYSIS OF THE VARIABLE-SPEED MOTOR SHAFT OF THE GANTRY CRANE[J].Physical Testing and Chemical Analysis Part A:Physical Testing,2008,44(3):157-161. |
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| Authors: | WEI Xing-zhao ZHONG Xi-chun ZHU Wei-heng JIAO Dong-ling XU Lin-kang |
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| Affiliation: | (School of Mechanical Engineering, South China University of Technology, Guangzhou 510640, China) |
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| Abstract: | The drop of lifted body with a production safety accident was caused by the fracture of the variablespeed motor shaft of the large-sized gantry crane. The fracture causes of the variable-speed motor shaft were analyzed by using macroscopic-and microscopic analysis methods. The results showed that the immediate brittle fracture was triggered by local fatigue cracking and extending of variable-speed motor shaft in long-duration operation, and the fracture of the shaft was related to the low manufacturing quality and about fifty years active time. |
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| Keywords: | Gantry crane Variable-speed shaft Fatigue fracture Brittle fracture |
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