煤矿机械
煤礦機械
매광궤계
Coal Mine Machinery
2015年
8期
41-43
,共3页
托梁%强度分析%优化设计%线性增加
託樑%彊度分析%優化設計%線性增加
탁량%강도분석%우화설계%선성증가
trimmer beam%strength analysis%optimization design%increases linearly
分析了一种托梁结构设计存在的缺陷，并给出了优化设计方案。分析表明：托梁的危险断面发生在516.809 mm＜L≤960 mm。原因是此范围内，托梁所受弯矩是线性增大的，而截面参数却相同，造成托梁最大合成应力也线性增加。优化结果显示：托梁截面高度按线性加高，只要在L=516 mm处满足强度要求，则所有断面都可满足强度要求。托梁断面的设计一定要考虑弯矩的变化。
分析瞭一種託樑結構設計存在的缺陷，併給齣瞭優化設計方案。分析錶明：託樑的危險斷麵髮生在516.809 mm＜L≤960 mm。原因是此範圍內，託樑所受彎矩是線性增大的，而截麵參數卻相同，造成託樑最大閤成應力也線性增加。優化結果顯示：託樑截麵高度按線性加高，隻要在L=516 mm處滿足彊度要求，則所有斷麵都可滿足彊度要求。託樑斷麵的設計一定要攷慮彎矩的變化。
분석료일충탁량결구설계존재적결함，병급출료우화설계방안。분석표명：탁량적위험단면발생재516.809 mm＜L≤960 mm。원인시차범위내，탁량소수만구시선성증대적，이절면삼수각상동，조성탁량최대합성응력야선성증가。우화결과현시：탁량절면고도안선성가고，지요재L=516 mm처만족강도요구，칙소유단면도가만족강도요구。탁량단면적설계일정요고필만구적변화。
Analyses the design defects of a trimmer beam, and gives the optimizing design scheme. A nalysis shows:the dangerous section of trimmer beam occurred in the range of 516.809 mm<L≤960 mm. The reason is that trimmer beam bending moment is increasing linearly, and section parameters were the same, cause maximum combined stress increases linearly. Optimization results show: the height of trimmer beam section increases linearly, as long as the section strength meet the requirements in the place of L=516 mm, all section can meet the strength requirements. The trimmer beam section design must consider the change of the bending moment.
