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在矿山生产中,挖掘机斗柄后保险牙被撞断、碰落是一个常发性的事故。造成事故的原因是由于司机操作不当,斗柄前伸过快,后保险牙撞击扶柄套上的保险杆,产生过度冲击造成的。为了避免事故的发生,我们试制了一套限位装置装在推压系统里,经过半年多的试验与改进,效果良好。现介绍如下: 装置由电气和机械两部分构成。图1是电气原理图,即在原主令控制器的基础上,增加点划线框里的元件,行程开关zx、组合开
In the mine production, after the excavator handle the insurance tooth was broken off, landing is a recurrent accident. The cause of the accident is due to improper operation of the driver, bucket handle stretched too fast, after the insurance tooth impact bumper on the sleeve, resulting in excessive impact. In order to avoid accidents, we trial a set of limit device installed in the push system, after more than six months of testing and improvement, the effect is good. Now introduced as follows: The device consists of two parts of electrical and mechanical composition. Figure 1 is the electrical schematic diagram, that is, based on the original master controller, an increase of the dotted line box components, travel switch zx, the combination of open