我厂315吨曲柄压力机(图1)在一次故障中整个下连杆断裂(图2)。原因是下连杆联接肖轴的紧固螺钉松脱肖轴向一个方向串动,使肖轴的一端顶在床身侧立柱的凹槽中,当滑块行程向上(一半)时,肖轴在槽中端部挤死,滑块继续往上便将下连杆拉断。在没有备件的情况下,党委决定立即组织有关人员抢修,下 315 tons crank press of our factory (Fig. 1) broke down the whole lower connecting rod in a fault (Fig. 2). The reason is that the connecting rod of the lower connecting rod is loosened by the fastening screw of the minor axis in one direction of the minor axis and the one end of the minor axis is in the groove of the column of the side of the machine body. When the slide stroke is up (half) Crowd in the end of the slot, the slider will continue to pull up under the next link. In the absence of spare parts, party committees decided immediately to organize the repair of personnel, under