公共交通型自动扶梯传动链条及桁架的安全性能分析

Safety Performance Analysis on Driving Chains and Trusses of Public Transport Type Escalator

为了消除公共交通型自动扶梯高负荷、长时间运行过程中存在的安全隐患,运用理论计算方法分析了梯级传动链条、主驱动链条的安全系数,运用有限元分析方法研究了在满载工作条件下金属桁架的强度特性.研究表明,梯级传动链条、主驱动传动链条安全系数足够,金属桁架最大变形位于梯级倾斜段中间位置,均满足国家标准要求.该分析方法可为公共交通型自动扶梯的结构设计提供数据参考,确保自动扶梯的安全性.

In order to eliminate the hidden danger of public transport type escalators with high load and long-running, the theoretical calculation method is adopted to analyze the safety factors of cascade driving chains and the main driving chains, and the finite element method is adopted to analyze the strength char- acteristics of metal truss under the full load operating conditions. It shows that the cascade driving chains and the main driving chains＇ safety factors are sufficient, and the maximum deformation area is located in the middle sloping section of truss, which all meet the national standards. It can provide references for structure design of public transport type escalator and ensure the safety of escalators.