技术 | 斗式加强机链板频繁断裂的处理
<img src="https://mmbiz.qpic.cn/mmbiz_gif/5ib4ib2jiabPxGcgkt9yHL99OpMtoXXjTDTdjCLDDyqES8PbI3dkdKpc0Jnw26TXKR5aVHYRb7m95ia6oUsNeIE9xA/640?wx_fmt=gif&tp=webp&wxfrom=5&wx_lazy=1" style="width: 50%; margin-bottom: 20px;"><img src="https://mmbiz.qpic.cn/mmbiz_png/5ib4ib2jiabPxH9bfXKf3hJ4KYtv70K706ejJVqkMMSLic21XyibQna2mTiaRvpNGJaUzSTaicu1mR9ALpKmwCOzo2iciag/640?wx_fmt=png&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;">某<span style="color: black;">机构</span>5000t/d干法水泥生产线水泥磨辊压机配套循环斗式<span style="color: black;">提高</span>机(型号NSE1000x45000)。该线于2011年1月投产，<span style="color: black;">运用</span>3年时间内斗式<span style="color: black;">提高</span>机运转正常，2014年初<span style="color: black;">出现</span>一次一根链条断裂事故，更换断裂链板之后，<span style="color: black;">起始</span>频繁<span style="color: black;">出现</span>链板断裂故障，<span style="color: black;">每日</span>停机时<span style="color: black;">检测</span>均有1至4块数量不等的链板断裂。链板刚<span style="color: black;">起始</span>断裂时，认为斗提<span style="color: black;">运用</span>了3年，可能存在疲劳断裂现象，加上辊压机循环负荷不稳定，<span style="color: black;">尤其</span>是辊压机塌仓、冲料时瞬间负荷过大等<span style="color: black;">一起</span><span style="color: black;">引起</span>链板断裂。<span style="color: black;">针对</span>断裂的链板，采取了搭接钢板焊接加固处理，<span style="color: black;">尽可能</span>延长<span style="color: black;">运用</span>时间。随后链板断裂越来越严重，先是<span style="color: black;">每日</span>断裂1至2块，后来发展到3至4块且料斗变形开裂，不得不<span style="color: black;">每日</span><span style="color: black;">按时</span>停机<span style="color: black;">检测</span>、处理链条及料斗，大大加大了维修工作量。<span style="color: black;"><strong style="color: blue;">一段时间内，链板断裂<span style="color: black;">成为了</span>影响水泥磨正常运转的<span style="color: black;">重点</span><span style="color: black;">原因</span>。</strong></span>链板及料斗<span style="color: black;">检测</span>处理是在<span style="color: black;">提高</span>机下部、地面上<span style="color: black;">方的检修孔进行，一次处理时<span style="color: black;">发掘</span><span style="color: black;">提高</span>机料斗倾斜，料斗两侧链条高低差100mm，随即安排<span style="color: black;">检测</span><span style="color: black;">提高</span>机上轮水平及磨损。拆除<span style="color: black;">提高</span>机机头罩，<span style="color: black;">检测</span>上轮正常，此时<span style="color: black;">发掘</span>两根链条与上轮轮齿啮合<span style="color: black;">区别</span>步，两根链条前后错一个轮齿。</span>链条与链轮啮合前后错一个轮齿，链条前后差一个节距125mm，<span style="color: black;">引起</span>料斗前后强行扭曲变形125mm<span style="color: black;">上下</span>，<span style="color: black;"><strong style="color: blue;">扭曲的料斗与链条之间产生附加力，此附加力是<span style="color: black;">引起</span>链条断裂、料斗变形开裂的真正<span style="color: black;">原由</span>。</strong></span>随后<span style="color: black;">即时</span><span style="color: black;">调节</span><span style="color: black;">提高</span>机链条同步，料斗基本水平，链条<span style="color: black;">调节</span>前后见<strong style="color: blue;">图1、2</strong>。<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_png/5ib4ib2jiabPxHh5VRIfmJTMpRkSAcFHkKiaGxBoxt6QLSuZBu1zlZA6ccRG8tUfqr3AwCpgev7c3sicwcmcia9gR60A/640?wx_fmt=png&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p><p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;"><span style="color: black;">图1 链条<span style="color: black;">调节</span>前料斗倾斜</span></strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_png/5ib4ib2jiabPxHh5VRIfmJTMpRkSAcFHkKiaMS6OicPshCDurl0nHsI69Y2ZHYVTG81hDJib3ZAXBQx7OMAR60aSniazw/640?wx_fmt=png&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">图2 链条<span style="color: black;">调节</span>后料斗水平</strong></p><span style="color: black;">调节</span><span style="color: black;">提高</span>机链条同步，<span style="color: black;">运用</span>一年内基本没再<span style="color: black;">出现</span>链板断裂、料斗变形开裂的现象，说明<span style="color: black;">以上</span><span style="color: black;">原由</span>分析及处理<span style="color: black;">办法</span>是正确的。<span style="color: black;">-END-</span>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_png/5ib4ib2jiabPxHh5VRIfmJTMpRkSAcFHkKia9qj6EvpJKtP7Q9qOibpMBSGVBibJskKCYBb5MSyM16wRour1FD0B5Iug/640?wx_fmt=png&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p><span style="color: black;">
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<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">作者：单绍仁，宋卫华，桑波磊，杜廉，秦</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;"><span style="color: black;"><span style="color: black;">源自</span>：</span><span style="color: black;">《安阳中联水泥有限<span style="color: black;">机构</span></span></strong><strong style="color: blue;"><span style="color: black;">》</span></strong></p>
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