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吊钩放到最低位置时，卷筒两边的钢丝绳应保留多少圈？
[ 2011-7-4 21:26:00 | By:
杨远锋
]
当吊钩放到最低位置时，卷筒两边的钢丝绳最少应保留三圈。
因为钢丝绳是靠压板固定在卷筒上，只有保留三圈以上才能使钢丝绳与卷筒产生一个很大的摩擦力，以减小压板的拉力，防止吊负荷时将钢丝绳从压板下抽出或将压板螺丝拉断发生事故。
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原创
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2016-9-6 17:11:48
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原创(游客)
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2016-9-28 16:47:35
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原创(游客)
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原创
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2016-9-30 11:24:09
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原创(游客)
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Re:在漫画中识别身边的违章
[
2016-10-14 17:07:24
| By:
mqvxb(游客)
]
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Re:在漫画中识别身边的违章
[
2016-10-17 4:19:53
| By:
kzegj(游客)
]
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Re:在漫画中识别身边的违章
[
2016-10-18 1:17:34
| By:
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]
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Re:在漫画中识别身边的违章
[
2016-10-21 13:05:59
| By:
wycgj(游客)
]
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Re:在漫画中识别身边的违章
[
2016-10-22 2:52:13
| By:
vzdhl(游客)
]
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Re:在漫画中识别身边的违章
[
2016-10-22 3:16:10
| By:
xpsuy(游客)
]
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Re:在漫画中识别身边的违章
[
2016-10-22 17:00:22
| By:
sinos(游客)
]
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Re:在漫画中识别身边的违章
[
2016-10-22 23:11:38
| By:
wukmq(游客)
]
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Re:在漫画中识别身边的违章
[
2017-2-20 18:52:09
| By:
jotvz(游客)
]
http://wen.28.com/article/135157
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http://wen.28.com/article/135165
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Re:在漫画中识别身边的违章
[
2017-3-4 15:46:42
| By:
azpru(游客)
]
http://www.lexueke.com/fenlei/6597065
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