乘客电梯曳引机支撑座系统的动态特性分析

针对乘客电梯在不同乘客负载情况下所表现不同动态响应特性问题,利用数值模拟技术对2.5 m/s的高速电梯支撑座系统进行了研究。采用ANSYS有限元软件中的模态叠加法,在分析了支撑座系统本身固有频率后,计算了轿厢在常见乘客满载、半载和空载3种工况下时支撑座系统的动态响应大小,建立了外界激励频率与支撑座系统动态响应间关系,提出了负载变化对支撑座系统动态响应的影响规律。研究结果表明,支撑座中的3根工字钢梁横向位移响应明显,且动态响应特性规律基本一致;随着轿厢中乘客人数增加,支撑座系统工字钢动态响应特性越加明显;3种工况下,外界激励频率均在高于一阶固有频率附近发生最大的动态响应位移。支撑座系统动态特性研究为工程人员合理的支撑座结构设计提供了一定的理论依据。

Dynamic characteristic analysis for support seat system of passenger elevator

Aiming at different dynamic characteristics of passenger elevator in different number of passenger, support seat system of 2.5 m/s high-speed-elevator was studied through the numerical simulation technique. Using mode superposition method in ANSYS finite element software, after the analysis of nature frequency for support seat system, the performance of dynamic was computed which the analysis was in three operating condition of elevator car, respectively, full-load, half-load and no-load, the relationship between external excitation frequency and dynamic performance was built, and the influence law of dynamic response was offered as the load changed. The results indicate that transverse displacement responses are obvious for the three I-beams of support seat system, and dynamic responses are basically identical. As the passengers increas in the car, the degree of the dynamic response of the I-beams is increased. Under the three usual operating conditions, the most degree of dynamic response is happened which external excitation frequency are beyond the first step natural frequency. The study of dynamic characteristics provides a theoretical basis for engineers to design a reasonable constructor of support seat system.