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一、DBQ3000型塔式起重机安装扳起时臂架坠落事故1．事故过程简述1995年,某电厂建设工地,某电建公司新购一台DBQ3000型塔式起重机,准备作为工程主吊机械使用,合同约定供方(某修造厂)负责现场安装、试吊,验收合格后交电建公司,标的物交付。经过近一月的紧张施工,安装工作进入臂架扳起阶段。这一天,从检查、准备、开始起扳,工作进行得很正常。下午13:40左右,主臂扳到位后(可能还差几度没到方案中设定的主臂仰角),起扳副臂(此过程中机台上的应
First, DBQ3000-type tower crane boom jib mounted when the crash fall 1. Brief Description of the Accident Process In 1995, a DBQ3000 tower crane was newly purchased by a power construction company in a power plant construction site and was intended to be used as the main crane equipment of the project. The contract stipulated that the supplier (a repair factory) should be responsible for site installation, After passing the inspection and acceptance, the company will be delivered and the subject matter delivered. After nearly a month of intense construction, installation work into the boom up phase. On this day, starting from the inspection, preparation, start pull, the work went very well. 13:40 or so, the main arm in place (probably less than a few degrees to the program set in the main boom elevation), jailer jib (this process should be on the machine should