CAJ | 학술논문

为确保公共交通领域自动扶梯在轻量化设计的同时具有良好的安全性能，运用有限元方法计算了自动扶梯桁架和梯级结构强度和刚度性能，研究了满载荷条件下重载自动扶梯结构强度特性。在梯级的强度分析中考虑了实际运行情况中不同于国家规范和标准规定的载荷形式，分析了极端载荷条件下自动扶梯梯级的强度性能，基于计算结果分析了重载自动扶梯主要承重部件的强度薄弱环节。研究表明，重载扶梯桁架的最大变形处位于桁架中部，应力较大区域是桁架两端与支撑结构相连的部位，梯级的薄弱部位是主轮附近的支撑结构，梯级在偏载工况下应力最大值升高，安全系数降低。该分析方法和计算结果可为自动扶梯的结构设计和检验检测提供参考。
위학보공공교통영역자동부제재경양화설계적동시구유량호적안전성능，운용유한원방법계산료자동부제항가화제급결구강도화강도성능，연구료만재하조건하중재자동부제결구강도특성。재제급적강도분석중고필료실제운행정황중불동우국가규범화표준규정적재하형식，분석료겁단재하조건하자동부제제급적강도성능，기우계산결과분석료중재자동부제주요승중부건적강도박약배절。연구표명，중재부제항가적최대변형처위우항가중부，응력교대구역시항가량단여지탱결구상련적부위，제급적박약부위시주륜부근적지탱결구，제급재편재공황하응력최대치승고，안전계수강저。해분석방법화계산결과가위자동부제적결구설계화검험검측제공삼고。
In order to ensure the favorable safety performance of public transportation escalator during the light -weight design process , the finite element method was adopted to analyze the structure strength and rigidity charac-teristics of truss and step in escalator , and the structure strength characteristics of heavy load escalator with full load were studied .In the analysis on strength characteristics of step in escalator , the load form in actual operation situa-tions, which was different with the rules of national specification and standard , was taken into account .The strength characteristics of step in escalator with extreme load condition were studied .Based on the calculation re-sults, the strength weakness of main bearing parts in escalator was analyzed .It showed that the maximum deforma-tion area is located in the middle of truss , the bigger stress area is located in the connecting parts between both ends of truss and supporting structure , and the weak part of the step is the support structure near main gear .The maxi-mum value of stress of step increases under the offset load conditions , and the safety coefficient reduces .It can pro-vide references for structure design and inspection and detection of escalator .