近几年来,使用升降机(包括简易升降机和电梯)的单位越来越多。升降机中,有不少是单位自制或非专业工厂生产的。由于其机身结构不大合理,零部件不配套,制造质量粗糙、低劣,有的甚至连必备的安全装置(如限位开关、门锁联动装置、缓冲装置等)也没有;加之在使用中没有建立健全合理 In recent years, there have been more and more units using lifts (including lifts and elevators). Lifts, there are many units of self-made or non-professional factory production. Because of its body structure is not reasonable, spare parts do not support the manufacture of rough quality, poor quality, and some even the necessary safety devices (such as limit switches, door locks linkage, buffer devices, etc.) did not; coupled with the use of Did not establish sound and reasonable