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起重机齿轮报废更换标准 | 2012-9-26 10:56:00
起重机齿轮报废更换标准
1、在起升机构中第一根轴上的齿轮磨损量超过原齿厚的10%,其余各轴上齿轮磨损量超过原齿厚的狐;
2、大车(小车)运行机构减速器第一轴齿轮磨损量超过原齿厚的15%,其余各轴上齿轮磨损量超过原齿厚的携;
3、开式齿轮的磨损量大于原齿厚的30%;
4、吊运赤热或熔化金属、酸溶液、爆炸物,易燃及有毒物品等的起重机上的齿轮按以上报废标准相应地减半。
5、因齿面点蚀而损坏的齿轮工作面面积大于30%及深度超过齿厚的10%。
6、齿根上有一处或数处疲劳裂纹或断齿。
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