探析防止电梯轿厢意外移动的保护

Analysis of the Protection Against Unintended Car Movement of Elevators

介绍了电梯轿厢意外移动的概念及产生原因；列举了需要增加防止轿厢意外移动保护装置的情况；给出了防止轿厢意外移动的保护装置的设置要求；指出了轿厢意外移动时制动行程的要求；对比了轿厢意外移动保护与轿厢超速保护的区别。

The concept and causes of elevator unintended car movement are introduced. The cases needing to increase the protection device to prevent unintended car movement are cited. The setting requirements of protection device to prevent unintended car movement are given and the brake distance of the protection device is also pointed out. The difference between the protection of unintended car movement and the car overspeed protection is compared.