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2011年某公司一台电动葫芦式起重机的其中一台电动葫芦减速箱发生坠落事故。该电动葫芦出厂日期为2009年6月,安装于电动葫芦门式起重机上,额定起重量为10t,机构工作级别为M3,起升高度为18m,起升速度为7m/min,运行速度为20m/min,地面遥控操作,主要用于造船时船体零部件的吊装。2011年8月的某一天,3名员工在安装船头座角支撑架(钢管)时,由1名员工在地面操作电动葫芦门式起重机,操作人员在座角上解除用于捆扎座角支撑架的钢丝绳时,用于吊运座角支撑架的电动葫芦的减速箱坠落,砸到船头的座角上后坠落到地面,事故造成1名员工死亡。
In 2011, one of the company’s electric hoist cranes crashed in one of the electric hoist gearboxes. The electric hoist factory date is June 2009, installed in the electric hoist gantry crane, the rated capacity of 10t, the body work level M3, lifting height of 18m, lifting speed of 7m / min, the operating speed of 20m / min, ground remote control operation, mainly used for lifting the hull parts during shipbuilding. On the day of August 2011, when three employees installed the bow corner support (steel pipe), one employee operated an electric hoist gantry crane on the ground and the operator lifted the seat for cornering support Of the wire rope, the lifting bracket used to lift the angle bracket brakes crashed, hit the bow of the seat on the corner after falling to the ground, resulting in the death of an employee.