目前,在建筑工地上使用的塔机存在许多潜在的技术安全隐患,值得重视。通过检测发现,制造、安装、维修和使用4个环节都有问题。1．制造(1)不能严格执行相关标准。常见的问题是：变幅机构未设置变幅小车断绳、断轴保护装置；配重制造图中无称重要 At present, tower crane used on construction site has many potential technical safety hazards, which deserves attention. Through the test found that manufacturing, installation, maintenance and use of four aspects have problems. 1. Manufacturing (1) can not strictly enforce the relevant standards. Common problems are: luffing body is not set roving broken rope, broken shaft protection device;