发明名称 |
Crane with boom raising assist structure |
摘要 |
A lift crane includes a carbody; ground engaging members elevating the carbody off the ground; a rotating bed rotatably connected to the carbody; a boom pivotally mounted at a first end to the rotating bed with a load hoist line extending adjacent a second end of the boom; a boom hoist mechanism that can be used to change the angle of the boom relative to the rotating bed during crane operation; and a boom raising assist structure connected to the boom. The boom raising assist structure preferably includes at least one ground engaging member in contact with the ground; and a boom elevating member extending between the assist structure ground engaging member and the boom. The boom elevating member supports at least a part of the weight of the boom. |
申请公布号 |
US8684197(B2) |
申请公布日期 |
2014.04.01 |
申请号 |
US20100764734 |
申请日期 |
2010.04.21 |
申请人 |
PECH DAVID J.;RUCINSKI JOSEPH R.;MANITOWOC CRANE COMPANIES, LLC |
发明人 |
PECH DAVID J.;RUCINSKI JOSEPH R. |
分类号 |
B66C23/82 |
主分类号 |
B66C23/82 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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