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铲斗后卸式电力装岩机是矿山生产中常用的掘进装载机械。其中行走电机的电控方式,目前国内各个厂家制造时,都采用两个接触器联锁控制。在控制正反转的各个回路中,分别串有防止两个方向同时闭合的联锁触头,以免引起电源短路。为了保证只有一个接触器得电和动作,在接触器ZC的控制电路中,串有接触器FC的常闭辅助触头。在接触器FC的控制电路中,串有接触器ZC的常闭辅助触头。这就是接触器正反转控制联锁线路(见图1)。
Bucket rear unloading electric rock loader is a commonly used tunneling and loading machinery in mine production. One of the electrical control walking motor, the current domestic manufacturers manufacturing, are using two contactor interlock control. In the control of the positive and negative of the various circuits, respectively, with a series of interlocking to prevent both directions of the contact closure, so as to avoid short circuit power. In order to ensure that only one contactor energized and action, in the contactor ZC control circuit, the series contactor FC normally closed auxiliary contacts. In the contactor FC control circuit, the series contactor ZC normally closed auxiliary contacts. This is the contactor positive and reverse control interlock circuit (see Figure 1).