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Improvements in or relating to travelling rollers for slewing excavators and cranes
Improvements in or relating to travelling rollers for slewing excavators and cranes
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机译:回转挖掘机和起重机的行走压路机或与之相关的改进
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385,882. Jib cranes; excavators. ORENSTEIN & KOPPEL AKT.-GES., 23. Templehofer Ufer, Berlin. July 8, 1932, No. 19340. Convention date, July 10, 1931. [Class 78 (iv).] In a slueing device for cranes and excavators, the frame a, Fig. 1, supporting the crane or excavator is provided with rollers c engaging with slight clearance between tracks e, f on a rail g secured to the base b. In a modification, conical rollers are provided which can be radially adjusted with respect to the rail g. In a further modification, Fig. 3, the frame a is positioned on the base b by a ring of rollers n arranged alternately with the rollers c around the frame a.
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