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1、电磁制动器拆卸和装配以及调试林建强目录第①项·····························································电磁制动器第②项·····························································组成、工作原理第③项·····························································任务要求第④项·····························································注意事项第⑤项
2、·····························································流程图第⑥项·····························································工具介绍第⑦项·····························································流程图第⑧项·····························································实训开始第⑨项····························
3、·································遇到的问题第⑩项·····························································提出的问题第⑩①项··························································心得与体会电磁制动器制动系统:电磁制动器电磁制动器是电梯一个重要的安全装置。他的作用是使轿厢停靠准确,同时使电梯在停止时,不因轿厢与对重的差重,而产生滑移。电磁制动器主要组成:铁芯、制动闸瓦、制动弹簧工作原理:制动器的电磁线圈与电动机并联,电动机停止时,电磁
4、铁线圈不通电,两铁芯之间无吸引力,制动闸瓦在制动弹簧的压力下抱紧制动轮,使电梯静止。当电梯启动时,电动机通电,电磁铁线圈同时通上电流,使铁芯磁化吸合,带动制动臂使其克服弹簧力使闸瓦张开,制动力消失,电梯得以运行。任务目标与要求任务要求:1.规范拆卸制动弹簧、制动闸瓦、制动铁芯2.检查电磁制动器的使用状况3.判断制动弹簧、制动带、销轴等是否需要更换4.规范安装电磁制动器5.制动弹簧顶、制动铁芯、制动闸瓦的调整6.对工具的使用任务目标:完成曳引机制动器的拆卸与装配、调试△注意事项•期间不可打闹、玩耍•注意每一步骤是否思考到位避免返工•对工具的使用熟练(如扳手的型号)•遇到问题可以请教同学、老师
5、•工具和零件摆放整齐•不可以违法施工工具、耗材介绍各类扳手木锤工具、耗材介绍手套塞尺螺丝刀工具、耗材介绍锯子抹布黄油砂纸其余还有连杆、胶锤、螺栓、螺母、等等。实训流程图准备工作拆卸清洁润滑调整调试运行装配实训开始准备工作:准备工具电梯停至顶层,切断电梯主电源。点动松开制动器抱闸,直至对重完全压缩缓冲器,轿厢不在上行为止。如果轿厢内的负载小于平衡负载,则将轿厢停在最高层附近,然后拆卸制动器;如果大于平衡负载,则把轿厢停在最底层附近,然后拆卸制动器。确认电源已切断。实训开始拆卸制动器:1.制动弹簧拆卸利用扳手把制动器一侧的螺母、螺丝固定,在用扳手把另外一边的螺丝、螺母拧出,取出制动弹簧。2.两
6、边的制动臂拆卸利用木锤和铸铁把制动器臂的三根销轴打出,取出铁芯,把所有部件、零件以及工具摆放整齐。实训开始3.制动轮清洁、检查制动轮表面光滑,没有划伤的痕迹或凹槽,否则应打磨光滑。4.制动铁芯的清洗在铜套内滑动灵活,必要时可用石墨粉或二硫化钼,电磁线圈应无松动,线圈外部必须有良好绝缘。5.安装制动臂、制动弹簧重新安装上制动臂。实训开始拆卸销轴制动臂实训开始6.制动弹簧的调整松开主弹簧压紧螺母,把调节螺母拧进减小弹簧长度,增加弹力,使制动力变大,反之制动力变小;7.制动铁芯的调整用扳手松开调节螺母,调整调节螺母间隙适中后拧紧压紧螺母;8.制动闸瓦的调整制动器动作必须可靠灵活,制动时两侧闸瓦应
7、紧密、均匀地贴合在制动轮的工作面上,松闸时应同步离开。实训开始提出的问题?1.电磁制动器如何清洁润滑？使用哪种润滑材料，有什么特点？答:制动轮表面光滑,没有划伤的痕迹或者凹槽,制动轮调整螺母、锁紧螺母松紧适当。制动轮表面应无划痕和高温焦化颗粒,否则应打磨光滑。电磁铁可动铁芯在铜套内滑动灵活,必要时可用石墨粉或二硫化钼润滑。最好使用二硫化钼润滑,耐磨、致密性好、附着力强、防锈性能好,连续润滑操作使用。而石墨粉也可以,但是易
