| 柴油机高压泵螺钉断裂的可靠性研究 |
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| 引用本文： | 梁前超,彭彪,倪蔚睦,姚坚,李伍生. 柴油机高压泵螺钉断裂的可靠性研究[J]. 武汉理工大学学报(交通科学与工程版), 2005, 29(4): 481-483 |
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| 作者姓名： | 梁前超 彭彪 倪蔚睦 姚坚 李伍生 |
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| 作者单位： | 1. 海军工程大学,武汉,430033
2. 海军保障基地 武汉 430000 |
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| 基金项目： | 国防重点科技攻关项目资助 |
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| 摘 要： | 利用可靠性原理分析了柴油机高压泵螺钉断裂的故障分布及故障模式，实船测量了高压泵端盖埋头螺钉的预紧力及动态载荷，测量结果表明，端盖螺钉组按规定二次对角拧紧，导致动载偏大，从而出现疲劳破坏，问题解决后，疲劳强度计算表明此时螺钉的疲劳强度足够，不会出现疲劳破坏，柴油机可靠性指标有较大提高。
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| 关 键 词： | 可靠性 预紧力 疲劳强度 应变测试 |
| 收稿时间： | 2005-06-11 |
| 修稿时间： | 2005-06-11 |
On Reliability of Iimmerging Bolt-breaking in Diesel Pump |
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| Liang Qianchao,Peng Biao,Ni Weimu,Yao Jian,Li Wusheng. On Reliability of Iimmerging Bolt-breaking in Diesel Pump[J]. journal of wuhan university of technology(transportation science&engineering), 2005, 29(4): 481-483 |
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| Authors: | Liang Qianchao Peng Biao Ni Weimu Yao Jian Li Wusheng |
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| Abstract: | By means of the reliability principle, the calculation and analysis have been made for immerging bolt-breaking in the diesel. The method is based on the strain measuring, the beforehand stresses and dynamic stresses of immerging bolts in a high-pressure bump are measured. It indicates that the beforehand stresses are not even if the bolts are fixed according to twice diagonal-line installing. The calculating results of fatigue strength for bolts show that their fatigue invalidation would not happen.At last, the reliablility enhancement of diesel engine is well received. |
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