塔吊限位器安全控制要点有哪些?
以下是小编为大家收集的塔吊限位器安全控制要点有哪些?,本文共10篇,欢迎参阅,希望可以帮助到有需要的朋友。 塔吊限位器安全控制要点有哪些? 1.超过限位器,也称上升级限位置限制器,即当塔吊吊钩上升到极限位置时,自动切断起升机构的上升电源,机构可作下降运动,安全检查时应做动作试验验证。 2.变幅限位器。包括小车变幅和动臂变幅。安全检查时应做试验验证。 (1)小车变幅。塔吊采用水平臂架,吊重悬挂在起重
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