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<div class="mbx">当前位置：<a href="/">首页</a> › <a href="/wenti-4/">常见故障</a> › 康明斯柴油发电机振动过量的原由	</div>
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<h1 class="h1">康明斯柴油发电机振动过量的原由</span></h1>
<div class="text">发布来源：康柴（深圳）电力技术有限公司　　发布日期: 2025-03-27　　访问量:826</div>
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<p>柴油发电机工作中，因为其爆发力和惯性力的功用，发生一定的震动是正常的。在工况、一定期，其震动有一定大小和规律的。按国家标准测试和评级<a href="http://www.gdkmsfdj.com" target="_blank">康明斯柴油发电机报价</a>，康明斯系列柴油发电机的震动是属于B级以上（良好级）的，如出现震动异样，往往有以下现象∶</p><p>① 柴油发电机各部位振动加剧。特别是高压油管、中冷器、调速器等部件，用肉眼能看出振动。用手触摸有麻木感觉。</p><p>（1）使柴油发电机本自因震动加剧，震动应力过度，可靠性和寿命下降，严重者引起零配件损坏造成人身安全损坏。</p><p>（3）柴油发电机过大的振动，危害周围装置仪器的精度和寿命，还造成机房的地基共振，就是对周围的人员，也出现不利于身心健康的影响。</p><p>柴油发电机作业中，各缸燃烧爆发力、运动零件的惯性力，各零件之间的冲击力、摩擦力是致使柴油发电机振动的振源。由于柴油发电机结构复杂发火次序不一样。所以振源也很复杂，震动是难免的。但当发生以下情形时，便会使这种振动加剧。</p><p>① 各缸供油角不均匀，或供油量不均匀、压缩比不均匀，会造成各缸爆发力和作功大小不均，则产生附加力，使柴油发电机振动加剧。</p><p>② 柴油发电机活塞及连杆运动中除发生往复惯性力外，还有离心惯性力，各缸的这些力不同，就会造成柴油发电机工作不平衡，使振动加剧。所以在安装中，对活塞.连杆组有严格的品质要求<a href="http://www.gdkmsfdj.com" target="_blank">柴油发电机试运行步骤详解</a>。对康明斯柴油发电机，同一台柴油发电机各缸的品质差不得大于100g，当超过时，将引起各缸惯性力不均，使震动加剧。</p><p>③ 一根平衡良好的曲轴（对康明斯柴油发电机不平衡度误差150g）在高速运行中，其离心力是平衡的。如各曲拐和平衡块重量上的误差将引起主轴不平衡，因面致使柴油发电机震动加剧。</p><p>④ 同样道理，飞轮和连接器本身也必须进行良好的平衡，才会不产生因附加不平衡离心力引起的震动加剧。对康明斯 系列柴油发电机，当连接器的金属橡胶座净重误差太大（大于10g），则会由于不平衡离心力造成柴油发电机震动加剧。</p><p>⑤ 飞轮连接细钉松动.，飞轮在旋转中发生摆动，也将造成离心力不平衡，致使振动加剧，对 Z8V康明斯和 Z6V康明斯柴油发电机，为了平衡不平衡惯性力和惯性力矩，在机体上装有俩根平衡轴。当平衡轴齿轮位置装错，则使平衡轴出现的惯性力不但起不到平衡的用途，反而使不平衡力和力矩更大，引起柴油发电机振动加剧。</p><p>⑥ 柴油发电机的增压器转动转速很高，其每分钟超过30000转/分<a href="http://www.gdkmsfdj.com" target="_blank">康明斯柴油发电机结构图</a>。转子稍有不平衡，将会发生大的不平衡力，使增压器出现很大的震动，这种震动会引起柴油发电机震动加剧。故而当转子平衡性不良，或叶轮故障，均破坏原来的动平衡要求，（对康明斯 系列柴油发电机的增压器，动平衡验证时重心偏移超过 2mm）。会造成柴油发电机振动加剧。</p><p>⑦ 柴油发电机轴承间隙过度，或柴油发电机主轴弯曲时，造成曲轴运转中冲击轴承力加大，从而导致柴油发电机震动加剧。</p><p>⑧ 曲轴的减振器是起消减主轴扭转振动的。当减振器失效时，不仅起不到减振功能，还会因减振器惯性体运行不平衡，发生附加离心力，使柴油发电机振动加剧。</p><p>⑨ 柴油发电机和工作机械的对中有严格要求。无论是端面间隙还是径向间隙都有一定的数值要求。当对中不良，便会造成柴油发电机因两种机械受力中心不统一面发生振动加剧，这是柴油发电机振动过度的多见因由。同样道理，柴油发电机主轴和风扇安装对中不良，也导致柴油发电机震动加剧）。</p><p>⑩ 柴油发电机和底座固定钉松动或底座刚性不足或基础薄弱，承受柴油发电机冲击立的能力不足并发生变形，加剧了柴油发电机振动。</p><p>对柴油发电机震动不正常，日常采用手触法或千分表测定法。然后凭经验进行判定。比较科学的方法是用声振仪测试剖析法，对震动部位和震动性质予以判定。关于诊断的起因有的放矢的予以解决。</p><p>① 对于装配和基本缘由造成的震动异常，应该对柴油发电机重新进行对中、装配、紧固，使其符合要求。</p><p>② 对于燃油、燃烧不平衡造成振动异常，应该对燃油、燃烧系统重新进行调节，使供油角、压缩比、供油量等各缸一致。</p><p>③ 对由曲柄连杆装置各运动件重量不一致和平衡不良，导致的震动异样，应该重新进行配重和平衡试验，使其符合要求。</p></div><a href="http://www.gdkmsfdj.com/" target="_blank">http://www.gdkmsfdj.com</a>
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