Traversing hoists – Boom position lock
Patent
1997-04-03
2000-01-04
Brahan, Thomas J.
Traversing hoists
Boom position lock
212253, 212247, 188 31, 192 6962, B66L 2384
Patent
active
060100184
ABSTRACT:
A swing lock mechanism for machines having an upper works rotatably mounted on a lower works by a swing bearing is connected to the drive shaft of a swing bearing drive assembly and comprises a swing lock plate, an annular pin support, and a plurality of locking pins. The swing lock plate is affixed to the drive shaft and has at least one hole disposed about the axis of the drive shaft. The annular pin support is fixed against rotation relative to the drive shaft is disposed about the axis of the drive shaft. The locking pins are supported by the annular pin support and are also disposed about the axis of the drive shaft. The locking pins are arranged in such a manner so as at least one pin may engage a hole in the swing lock plate irrespective of the angular orientation of the swing lock plate relative to the annular pin support.
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Brahan Thomas J.
Manitowoc Crane Group, Inc.
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