1台山推SF30型叉车发动机启动过程中,启动机发出“刺啦刺啦”的异响。该叉车启动电路由吸拉线圈L1、保持线圈L2、启动机磁场绕组、电枢绕组L等组成,接线端子B通过电缆线与蓄电池正极连接。如附图所示。当点火开关转到启动(START)挡时,C端子带电,电流通过保持线圈L2后在E点接地形成回路,从而使保持线圈 1 Taishan push SF30 forklift engine start-up process, the starter issued “stabbed thorn 啦 ” abnormal sound. The forklift starting circuit by the suction coil L1, holding coil L2, the starter field winding, armature winding L and other components, the terminal B through the cable connected to the positive battery. As shown in the figure. When the ignition switch to start (START) block, C terminal is energized, the current through the holding coil L2 at the E point of contact to form a loop, so that the holding coil