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<td><div id="ckepop"></div></td></tr></table><div id="Content" style="display:none;">[电气百科:AB罗克韦尔Bulletin 802R限位开关的特性及用途]:密封触点式危险场所限位开关Bulletin 802R 密封触点式危险场所限位开关具有一个坚固的单触点,密封在一个玻璃外壳中,因此即使在被污染的空气环境中也可实现出色的接触可靠性。这些开关由 Under...</div><div id="yjk4r1w4j" class="brand_news_con"><p style="text-indent:2em;"> 密封触点式危险场所限位开?</p> <p style="text-indent:2em;"> Bulletin 802R 密封触点式危险场所限位开关具有一个坚固的单触点,密封在一个玻璃外壳中,因此即使在被污染的空气环境中也可实现出色的接触可靠性。这些开关由 Underwriters?Laboratories, Inc. 认证,用于美国国家电气规范所定义?I ?2 分区 A、B、C ?D 组危险场所?</p> <p style="text-indent:2em;"> AB罗克韦尔Bulletin 802R限位开关特?</p> <p style="text-indent:2em;"> 在污染环境中具有很高的接触可靠?</p> <p style="text-indent:2em;"> NEMA 封装类型 13 </p> <p style="text-indent:2em;"> I ?B、C ?D 组,?II ?E、F ?G 组,或?III ?</p> <p style="text-indent:2em;"> 多种操作器样?</p> <p style="text-indent:2em;"> 侧面旋转 </p> <p style="text-indent:2em;"> 摇动?</p> <p style="text-indent:2em;"> 触针 </p> <p style="text-indent:2em;"> 可调顶部推动 </p> <p style="text-indent:2em;"> 顶部或侧面推?</p> <p style="text-indent:2em;"> 带或不带滚轮 </p> <p style="text-indent:2em;"> 限位开关又称行程开关,可以安装在相对静止的物体(如固定架、门框等,简称静物)上或者运动的物体(如行车、门等,简称动物)上。当动物接近静物时,开关的连杆驱动开关的接点引起闭合的接点分断或者断开的接点闭合。由开关接点开、合状态的改变去控制电路和电机?</p> <p style="text-indent:2em;"> AB罗克韦尔Bulletin 802R限位开关用?</p> <p style="text-indent:2em;"> 日常生活 </p> <p style="text-indent:2em;"> 限位开关的应用方面很多,很多电器里面都有它的身影。那这么简单的开关能起什么作用呢?它主要是起连锁保护的作用。最常见的例子莫过于其在洗衣机和录音机(录像机)中的应用了?</p> <p style="text-indent:2em;"> 在洗衣机的脱水(甩干)过程中转速很高,如果此时有人由于疏忽打开洗衣机的门或盖后,再把手伸进去,很容易对人造成伤害,为了避免这种事故的发生,在洗衣机的门或盖上装了个电接点,一旦有人开启洗衣机的门或盖时,就自动把电机断电,甚至还要靠机械办法联动,使门或盖一打开就立刻“刹车”,强迫转动着的部件停下来,免得伤害人身?</p> <p style="text-indent:2em;"> 在录音机和录像机中,我们常常使用到快进或者倒带,磁带急速地转动,但是当到达磁带的端点时会自动停下来。在这里行程开关又一次发挥了作用,不过这一次不是靠碰撞而是靠磁带的张力的突然增大引起动作的?</p> <p style="text-indent:2em;"> 工业 </p> <p style="text-indent:2em;"> 限位开关主要用于将机械位移转变成电信号,使电动机的运行状态得以改变,从而控制机械动作或用作程序控制?</p> <p style="text-indent:2em;"> 限位开关真正的用武之地是在工业上,在那里它与其它设备配合,组成更复杂的自动化设备?</p> <p style="text-indent:2em;"> 机床上有很多这样的限位开关,用它控制工件运动或自动进刀的行程,避免发生碰撞事故。有时利用限位开关使被控物体在规定的两个位置之间自动换向,从而得到不断的往复运动。比如自动运料的小车到达终点碰着限位开关,接通了翻车机构,就把车里的物料翻倒出来,并且退回到起点。到达起点之后又碰着起点的行程开关,把装料机构的电路接通,开始自动装车。总是这样下去,就成了一套自动生产线,用不着人管,日以继夜地工作,节省了人的体力劳动?</p> <p style="text-indent:2em;"> 应用 </p> <p style="text-indent:2em;"> 限位开关可广泛应用于建筑、港口、矿山等行业的起重、传输机械的空间三坐标的控制和限位,限位开关由高精度的大传动比减速器和与其输出轴同步的机械记忆控制机构、传感器组成,因WTAU系列限位开关具有体积小、功能多、精度高、限位可调、通用性强及维护安装和使用调整方便等特点在工程机械中应用极其广泛?</p> <p style="text-indent:2em;"> <br /> </p></div><div id="yjk4r1w4j" class="meneame"><span class="disabled">< </span><span class="current">1</span> <span class="disabled">> </span></div> <div id="yjk4r1w4j" style="text-align: center;padding-top: 10px;"><img src="/images/code.jpg" alt="关注有惊?" /></div> <div id="yjk4r1w4j" class="news_bot_mes">中国工业电器网:此内容转载于合作媒体或互联网其它网站,中国工业电器网登载此文出于传递更多信息之目的,并不意味着赞同其观点或证实其描述!</br>新闻、技术文章投稿QQ?28246603 邮箱:news@fssybz.com</div> <h2 class="related">相关阅读</h2> <ul class="related_con"> <li>· <a href="/Article/1/190829/AD100904199_1.html" 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