采煤机供电电缆出故障是造成工作面停工的常见原因之一。电缆的故障一般有拉断、挤伤和磨损。目前大部分采煤机都把电缆卡在一条电缆夹中。电缆夹的结构有多种,其中链式应用最广。链式电缆夹是由一个一个框形链环铰接而成(图1),框形开口边向着老塘侧,电缆从这边放入链环内,再用销子挡住。这样既保护了电缆不致被外物碰伤砸环,也避免了电缆与底板的直接摩擦。当采煤机沿工作面运行时,电缆夹既被折迭又被拖移,当链环或销子磨损断裂,则电缆仍然要承受拉力,致使电缆拉断。为避 Shearer power cable failure is caused by one of the common causes of face downtime. Cable faults generally pull off, crushing and wear. Most shearers currently have cables stuck in a cable clamp. There are a variety of cable clamps, of which the chain is the most widely used. Chain cable clip is hinged by a frame link (Figure 1), the opening side of the box-shaped Laotang side, the cable into the chain from here, and then blocked with a pin. This will not only protect the cable from being hit by a foreign object hit the ring, but also to avoid the cable and the floor of the direct friction. When the coal shearer runs along the work surface, the cable clips are both folded and dragged, and when the links or pins wear and tear, the cable still has to bear the tensile force, causing the cable to break. To avoid