环南街道ACE力矩电机BCSM57L55H12E承君一诺
2) 同步电动机不能牵入同步 同步电动机常用的启动方法是异步启动法,在电机转子转速高于95℅同步转速时投励, 使之牵入同步。同步电动机不能牵入同步的原因有:(一)励磁绕组短路 由于励磁绕组存在短路故障,因而不可能产生额定磁场强度,导致电动机只能在低于同步转速下稳定运行而不能牵入同步。查找励磁绕组短路,可在转子引出线上通入低电压(30V左右),用一根手工钢锯条放在磁极面上,逐个检查磁极,如果该磁极面上锯条振动剧烈,说明该磁极没有短路,如果锯条微振或不振,说明该磁极短路,卸下该磁极后,查找故障点。视短路程度,采取局部修理或重新绕制。(二)电源电压过低 电源电压过低,造成励磁装置的强励环节不能动作,从而电动机无法牵入同步,具体办法是适当提高电源电压。(三)励磁装置的故障 如投励过早(即投入励磁时,电动机转子转速过低),会使电动机无法牵入同步,此时应检查投励环节是否存在故障,如励磁装置故障,输出的电流低于额定值,导致电机电磁转矩过小而不能牵入同步,此时应仔细检查励磁装置,发现问题,对症下药。
环南街道ACE力矩电机BCSM57L55H12E承君一诺
分体式液压拉马的分类应用1.应用领域分类:分体式液压拉马广泛应用于机械机电设备、建筑、公路、桥梁、冶金、矿山、边坡隧道、井道治理防护等基础建设行业,一般用于拆卸各种圆盘、法兰、齿轮、轴承、滑轮、皮带轮、轴承接头等部件。按材质分类:有工具钢和络钒钢材质。络钒钢材质比工具钢材质要好得多,无论在硬度、耐磨性还是使用寿命上都要优胜很多。分体式液压拉马的维护保养1.使用前应根据被拉物体的外径,拉距及负载力,选择相应吨位的分体式液压拉马,切忌超载使用,避免损坏。分体式液压拉马一般在-5℃~45℃中使用。为防止超载引起机具损坏,液压装置内设有超载自动卸荷阀,当被拉物体超过额定负载时,超荷阀会自动卸荷,而改选用更大吨位的分体式液压拉马。分体式液压拉马以油为介质,必须做好油及本机具的保养工作,以免淤塞或漏油,影响使用效果。新的或久置的分体式液压拉马,因液压缸内存有较多空气,开始使用时,活塞杆可能出现微小的突跳现象,可将分体式液压拉马空载往复运动2-3次,以排除腔内的空气。
TS-060-L1-R003-R004-R005-P1-P2
TS-060-L1-R006-R007-R008-R010-P1-P2
TS-060-L2-R015-R020-R025-R030-R040-P1-P2
TS-060-L2-R050-R060-R070-R080-R100-P1-P2
TS-090-L1-R003-R004-R005-P1-P2
TS-090-L1-R006-R007-R008-R010-P1-P2
TS-090-L2-R015-R020-R025-R030-R040-P1-P2
TS-090-L2-R050-R060-R070-R080-R100-P1-P2
TS-120-L1-R003-R004-R005-P1-P2
TS-120-L1-R006-R007-R008-R010-P1-P2
TS-120-L2-R015-R020-R025-R030-R040-P1-P2
TS-120-L2-R050-R060-R070-R080-R100-P1-P2
TS-150-L1-R003-R004-R005-P1-P2
TS-150-L1-R006-R007-R008-R010-P1-P2
TS-150-L2-R015-R020-R025-R030-R040-P1-P2
TS-150-L2-R050-R060-R070-R080-R100-P1-P2
环南街道ACE力矩电机BCSM57L55H12E承君一诺
环南街道ACE力矩电机BCSM57L55H12E承君一诺
硬质合金切削刀具在磨削加工时会产生较高的切削温度和粉尘、气雾。当粉尘、汽雾接触到眼睛或皮肤,以及被吸入都会产生危害。故对硬质合金切削刀具进行磨削或刃磨时,推荐您使用局部吸尘装置、带口罩、眼睛和手套等保护措施。若手上沾上粉尘,应用肥皂和水清洗干净。切勿在工作地就餐,餐前应将手洗干净。应用吸尘器或洗涤方法去除衣服上的粉尘,切勿用手拍粉尘。反复或长期接触粉尘会影响皮肤、呼吸器管和心脏等。硬质合金切削刀具使用的注意事项:硬质合金切削刀具材料具有硬而脆的特性,故在精加工时务必使用金刚石砂轮磨削。
环南街道ACE力矩电机BCSM57L55H12E承君一诺
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