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海南七星彩论坛GUANYUMENSHIQIBIJIDIANQISHEJIYUKONGZHIHEBAOHU

发布日期:[2013-02-01] 点击率:

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大车运行机构由四台电动机驱动,为保证大车运行平稳,应使四台电动机同步运行。因此设计了由一个接触器控制四台电动机同时启停运行。大车运行控制主令控制器“向左”、“向右”各一档。在起升机构制动、静荷载小于20t、小车制动且大车电气设备正常、夹轨器松开的情况下,大车才能运行。 司机室内设置了大、小车运行信号灯、90%荷载信号灯及报警电笛,闸门下降就位指示灯及电铃,全面警示电铃等。在启闭机的的起升、大车、小车等控制回路中均设置了零压零位联锁、电动机过流保护闭锁、限位保护回路,启闭机机械过载、轻载保护等回路。当起升荷载达到110%额定荷载时,提升回路自动断电,保护门机不受重载破坏。当下降荷载低于20%额定荷载时表明下放的重物被卡住,下降回路自动断电并发声光信号提醒运行人员现场处理。零压零位联锁回路保证起升机构、大车、小车不允许同时工作。限位保护回路使各运行机构一旦达到运行极限位置即立即自动停机。

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