发明名称 |
Mobile crane having telescoping outriggers and power operated screw means for same |
摘要 |
A mobile crane having an extensible boom which is swingable about both a vertical and horizontal axis and having telescoping outriggers that extend transversely of the main frame of the crane and which outriggers are also pivotally mounted about a vertical axis for swinging between stowed position along the main frame and an extending crane operative position. Power operated extension means are provided for telescopingly adjusting the outriggers and includes a reversible hydraulic motor for rotating a threaded shaft. The telescoping outrigger includes a hollow box in which a hollow beam is telescopingly mounted.
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申请公布号 |
US4394912(A) |
申请公布日期 |
1983.07.26 |
申请号 |
US19800203942 |
申请日期 |
1980.11.07 |
申请人 |
HARNISCHFEGER CORPORATION |
发明人 |
EPPS, STEPHEN R.;GATTU, NARAHARI |
分类号 |
B60S9/08;B60P3/28;B66C23/78;B66C23/80;(IPC1-7):B66C23/78;B66C23/30 |
主分类号 |
B60S9/08 |
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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