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ＧＢ/Ｔ 1375 2 - 92《塔式起重机设计规范》的4 9条规定塔机的安全保护应满足ＧＢ5 14 4 - 94《塔式起重机安全规程》的要求 ,在《塔式起重机安全规程》的 5 13条规定“应设置使小车运行不脱轨的装置 ,即使轮轴断裂 ,小车也不能掉落” ,而综观市场上塔机的小车变幅机构 ,或
Article 49 of the “Code for Design of Tower Crane” stipulates that the safety protection of tower crane shall meet the requirements of GB5144-94 “Tower Crane Safety Regulations” and the “Tower Crane Safety Regulations” 5 13 provides that “the device should be set so that the car does not derail the device, even if the axle breaks, the car can not fall,” and look at the tower cranes market luffing mechanism, or