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塔式起重机(以下简称塔机)主要用于建筑物料垂直和水平运输,具有作业范围大、应用广泛、可自行升降等特点。塔式起重机施工环境复杂、多变,对其使用安全影响很大。对塔机进行安全检验,可及时发现事故隐患,预防事故发生。我们在塔机安全检验过程中发现塔帽腹杆发生对称性裂纹,本文对其原因进行分析,并给出修复方法。1.故障现象2016年12月,我单位对某工地新安装的1台QTZ40型塔机进行安全检
Tower cranes (hereinafter referred to as tower cranes) are mainly used for the vertical and horizontal transportation of construction materials. They have the characteristics of large operating range, wide application, and self-elevation. The construction environment of tower cranes is complex and changeable, which has great impact on the safety of their use. The safety inspection of the tower crane can detect hidden accidents in time and prevent accidents. In the process of safety inspection of tower cranes, we found that there was a symmetry crack in tower cap webs. This article analyzes the causes and gives the repair method. 1. Symptoms In December 2016, our company conducted a safety inspection on a newly installed QTZ40 tower crane on a construction site.