发明名称 |
OUTRIGGER WITH VERTICALLY POSITIONABLE JACK |
摘要 |
A crane having outriggers that can be extended transversely of the main frame of the crane, and a vertically positionable jack is located at the outer ends of the outriggers and include a vertical, threaded shaft having a ground engaging pad at its lower end and which is non-rotatably carried by the outer end of the beam. A power drive is located within the beam for rotating a large nut that is engaged by the shaft and which is carried by the interior portion of the beam. This power drive includes a hydraulic motor which drives a speed reducer which in turn furnishes power to the sprocket and endless chain connection between the speed reducer and threadably driven nut. |
申请公布号 |
AU7660681(A) |
申请公布日期 |
1982.05.13 |
申请号 |
AU19810076606 |
申请日期 |
1981.10.19 |
申请人 |
HARNISCHFEGER CORP. |
发明人 |
NARAHARI GATTU;JOSEPH C. TERRANOVA |
分类号 |
B60S9/08;B60P3/28;B66C23/78 |
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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