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本文分析了某型号自动扶梯自带的一种特殊功能的设计原理，根据制造厂提供的使用资料阐述了该功能的特殊性及其操作方法，通过比对国标和检规的要求论证了该功能对非操作逆转保护功能、超速保护功能和扶手带速度偏离保护功能的不良影响；根据标准、检规的规定及实际使用中可能出现的安全隐患提出了相应的整改措施，促进了产品设计和设备检验检测工作的进步。“,”This paper analyzes a type escalator comes with a special function design principle, explains the function of the use of the information supplied by the manufacturers according to the particularity of its operation method, based on national standard and the requirement of inspection regulation demonstrates the function of reverse protection operation, over speed protection function and protection to the ill effects of handrail belt speed deviation, according to the standard, the inspection regulation and the actual use of possible safety problems put forward the corresponding improvement measures to promote the progress of product design and equipment testing work.