In order to study the relationship between the braking distance and the load of escalator and realize the prediction of the rated load braking distance with a little load, the method of combining theoretical analysis and experimental research is used. First, the dynamic characteristics of the escalator during emergency braking are analyzed, and the prediction model of the braking distance of the escalator under different loads is derived based on the law of conservation of energy. Furthermore, the influence coefficients under different loads were determined through experimental studies, the model was revised, and the concept of equivalent no-load kinetic energy (ENKE) was proposed. The research shows that the braking distance of the escalator increases nonlinearly with the increase in load. When the no-load braking distance and the 25% rated load braking distance change greatly, the braking distance increases faster as the load increases; the escalators with large brake force have a small ENKE and are easy to stop. Otherwise, it is difficult to stop. The test results show that the comparison between the predicted value of the prediction model and the measured value has a maximum error of 2.7%, and the maximum error at rated load is only 2.0%, which fully meets the needs of engineering measurement. And the prediction method reduces test costs, enhances test security, and improves test coverage.

中文翻译：

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自动扶梯大负荷紧急制动时制动距离的预测模型与试验研究

为了研究制动距离与自动扶梯负荷之间的关系，并实现小负荷下的额定负荷制动距离的预测，采用了理论分析与实验研究相结合的方法。首先，分析了自动扶梯在紧急制动过程中的动态特性，并根据能量守恒定律推导了不同负载下自动扶梯的制动距离预测模型。此外，通过实验研究确定了不同载荷下的影响系数，修改了模型，并提出了等效空载动能（ENKE）的概念。研究表明，自动扶梯的制动距离随着负荷的增加而非线性增加。当空载制动距离和25％额定负荷制动距离有较大变化时，制动距离随负荷增加而增加得更快。制动力大的自动扶梯的ENKE小，容易停车。否则，很难停止。测试结果表明，将预测模型的预测值与实测值进行比较，最大误差为2.7％，额定负载下的最大误差仅为2.0％，完全可以满足工程测量的需要。预测方法降低了测试成本，提高了测试安全性，并提高了测试覆盖率。测试结果表明，将预测模型的预测值与实测值进行比较，最大误差为2.7％，额定负载下的最大误差仅为2.0％，完全可以满足工程测量的需要。预测方法降低了测试成本，提高了测试安全性，并提高了测试覆盖率。测试结果表明，将预测模型的预测值与实测值进行比较，最大误差为2.7％，额定负载下的最大误差仅为2.0％，完全可以满足工程测量的需要。预测方法降低了测试成本，提高了测试安全性，并提高了测试覆盖率。