A method of extending a crane boom (12) comprises arranging a trolley lifting system (26) with respect to a crane with a boom; lifting a work trolley (22) to the boom with the trolley lifting system; connecting the work trolley to rails (14) on the boom; lifting the work platform (24) with a platform lifting system such that the work platform extends forward from a distal front end of the work trolley, wherein the work platform supports a boom extension piece (40); moving the work trolley along the rails to an end (16) of the boom such that the work platform extends under the boom end; removing the boom end; lowering the boom end to the work platform; connecting the boom end to the boom extension piece; raising the boom end and the boom extension piece to the level of the boom; and connecting the boom extension piece and boom end to the boom.
STS CRANE BOOM EXTENSION SYSTEM AND METHODS
STS-KRANAUSLEGERVERLÄNGERUNGSSYSTEM UND -VERFAHREN
SYSTÈME ET PROCÉDÉS DE PROLONGEMENT DE MÂT DE GRUE STS
2018-03-14
Patent
Electronic Resource
English
IPC: | B66C Krane , CRANES |
Boom extension and contraction mechanism for crane apparatus
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