起重吊装机械安全操作一般规定技术交底
工程名称:
施工单位 |
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建设单位 |
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作业名称 |
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作业部位 |
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交底部门 |
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交底人 |
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施工期限 |
年 月 日 至 年 月 日 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
接受交底班组或员工签名: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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交底内容: 1.起重机的内燃机、电动机和电气、液压装置部分,应执行JGJ 33—2001第3.1节、第3.2节、第3.4节及附录C的规定。 2.操作人员在作业前必须对工作现场环境、行驶道路、架空电线、建筑物以及构件重量和分布情况进行全面了解。 3.现场施工负责人应为起重机作业提供足够的工作场地,清除或避开起重臂起落及回转半径内的障碍物。 4.各类起重机应装有音响清晰的喇叭、电铃或汽笛等信号装置。在起重臂、吊钩、平衡重等转动体上应标以鲜明的色彩标志。 5.起重吊装的指挥人员必须持证上网,作业时应与操作人员密切配合,执行规定的指挥信号。操作人员应按照指挥人员的信号进行作业,当信号不清或错误时,操作人员可拒绝执行。 6.操纵室远离地面的起重机,在正常指挥发生困难时,地面及作业层(高空)的指挥人员均应采用对讲机等有效的通讯联络进行指挥。 7.在露天有六级及以上大风或大雨、大雪、大雾等恶劣天气时,应停止起重吊装作业。雨雪过后作业前,应先试吊,确认制动器灵敏可靠后方可进行作业。 8.起重机的变幅指示器、力矩限制器、起重量限制器以及各种行程限位开关等安全保护装置,应完好齐全、灵敏可靠,不得随意调整或拆除。严禁利用限制器和限位装置代替操纵机构。 9.操作人员进行起重机回转、变幅、行走和吊钩升降等动作前,应发出音响信号示意。 10.起重机作业时,起重臂和重物下方严禁有人停留、工作或通过。重物吊运时,严禁从人上方通过。严禁用起重机载运人员。 11.操作人员应按规定的起重性能作业,不得超载。在特殊情况下需超载使用时,必须经过验算,有保证安全的技术措施,并写出专题报告,经企业技术负责人批准,有专人在现场监护下,方可作业。 12.严禁使用起重机进行斜拉、斜吊和起吊地下埋设或凝固在地面上的重物以及其他不明重量的物体。现场浇注的混凝土构件或模板,必须全部松动后方可起吊。 13.起吊重物应绑扎平稳、牢固,不得在重物上再堆放或悬挂零星物件。易散落物件应使用 吊笼栅栏固定后方可起吊。标有绑扎位置的物件,应按标记绑扎后起吊。吊索与物件的夹角宜采用450~600,且不得小于300,吊索与物件梭角之间应加垫块。 14.起吊载荷达到起重机额定起重量的90%及以上时,应先将重物吊离地面200~ 15.重物起升和下降速度应平稳、均匀,不得突然制动。左右回转应平稳,当回转未停稳前不得作反向动作。非重力下降式起重机,不得带载自由下降。 16.严禁起吊重物长时间悬挂在空中,作业中遇突发故障,应采取措施将重物降落到安全地方,并关闭发动机或切断电源后进行检修。在突然停电时,应立即把所有控制器拨到零位,断开电源总开关,并采取措施使重物降到地面。 17.起重机不得靠近架空输电线路作业。起重机的任何部位与架空输电导线的安全距离不得小于表“ 18.起重机使用的钢丝绳,应有钢丝绳制造厂的签发的产品技术性能和质量的证明文件。当无证明文件时,必须经过试验合格后方可使用。 19.起重机使用的钢丝绳,其结构形式、规格及强度应符合该型起重机使用说明书的要求。钢丝绳与卷筒应连接牢固,放出钢丝绳时,卷筒上应至少保留三圈,收放钢丝绳时应防止钢丝绳打环、扭结、弯折和乱绳,不得使用扭结、变形的钢丝绳。使用编结的钢丝绳,其编结部分在运行中不得通过卷筒和滑轮。 表 1 起重机与架空输电导线的安全距离
20.钢丝绳采用编结固接时,编结部分的长度不得小于钢丝绳直径的20倍,并不应小于 表 2 与绳径匹配的绳卡数
21.每班作业前,应检查钢丝绳及钢丝绳的连接部位。当钢丝绳在一个节距内断丝根数达到 或超过表3根数时,应予报废。当钢丝绳表面锈蚀或磨损使钢丝绳直径显著减少时,应将表3报废标准按表4折减,并按折减后的断丝数报废。 22.向转动的卷筒上缠绕钢丝绳时,不得用手拉或脚踩来引导钢丝绳。钢丝绳涂抹润滑脂,必须在停止运转后进行。 表3 钢丝绳报废标准(一个节距内的断丝数)
表4 钢丝绳锈蚀或磨损时报废标准的折减系数
23.起重机的吊钩和吊环严禁补焊。当出现下列的情况之一时应更换: 1)表面有裂纹、破口; 2)危险断面及钩颈有永久变形; 3)挂绳处断面磨损超过高度10%; 4)吊钩衬套磨损超过原厚度50%; 5)心轴(销子)磨损超过其直径的3%~5%。 24.当起重机制动器的制动鼓表面磨损达1.5~ | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
补充作业指导内容: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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