去年,建材部陕西地质勘探大队使用的 SG 18型轻便管子钻塔,发生了折断的重大设备事故。 造成事故主要原因是:一、安装钻塔时,没有检查螺钉大小是否合格,个别地方用了小一号的螺钉,安装后又没有检查螺钉是否上紧,造成联结强度不够,经不起强力提拉。二、当时因钻孔内出现轻微烧钻 Last year, the SG 18-type portable pipe rig used by the Shaanxi Geological Exploration Brigade in the Ministry of Building Materials suffered a broken major equipment accident. The main causes of the accident are: First, the installation of the rig, did not check the size of the screw is qualified, in some places with a smaller one screw, the installation did not check whether the screw is tightened, resulting in insufficient strength, unable to withstand strong Pull. Second, there was a slight burnt drill at the time