Method for repairing and remould hoist main frame applied with "prestressed stretcher"

The invented method is comprised of preparation, allocation of ropes, welding, distribution of ropes, pulling and test processes. The "prestress pulling device") patent CN90201952.X of the present applicants) set on the main beam can produce pulling force to repair bridge type crane includ...

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Bibliographic Details
Main Authors FU MINHUA, FU GUOHUA, FU PING
Format Patent
LanguageEnglish
Published 08.06.1994
Edition5
Subjects
CRANES
HAULING
HOISTING
LIFTING
LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS,WINCHES, OR TACKLES
PERFORMING OPERATIONS
TRANSPORTING
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Summary:The invented method is comprised of preparation, allocation of ropes, welding, distribution of ropes, pulling and test processes. The "prestress pulling device") patent CN90201952.X of the present applicants) set on the main beam can produce pulling force to repair bridge type crane including the underneath deflection of main beam of gate type crane. It has the advantages of good pulling performance, less amount of rapair work, convenience for construction, capable maintaining original position of crane main beam in case of repair, short stop time of installation, low cost for repair, reliability and thoroughgoing in repair and once investment for long time benefit. It can increase the strength and rigidity of the main beam and also raise the loading capability.
Bibliography:Application Number: CN1992105172