7.5 Ton Free Standing Bridge Crane
7.5 Ton Free Standing Bridge Crane
(OP)
All,
Can anyone tell me if and where you can purchase a 7.5T free standing bridge crane off the shelf?
TIA
Can anyone tell me if and where you can purchase a 7.5T free standing bridge crane off the shelf?
TIA






RE: 7.5 Ton Free Standing Bridge Crane
Regards,
Lutfi
RE: 7.5 Ton Free Standing Bridge Crane
RE: 7.5 Ton Free Standing Bridge Crane
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RE: 7.5 Ton Free Standing Bridge Crane
http://www.patriotcrane.com/
RE: 7.5 Ton Free Standing Bridge Crane
With a gantry crane, the entire crane rolls on wheels for 'y' motion.
For both, transverse 'x' motion is provided by trolley-mounted hoist(s) traveling along the bridge or gantry cross-members.
Freestanding bridge cranes are available 'off the shelf' up to 4000 pounds capacity. These can be anchored with drilled holes in a standard 6” reinforced concrete floor. Smaller ones are now sometimes called workstation cranes. Some manufacturer sites for details and terminology:
http://www.spanco.com/pages/wsstandalone.php
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http://www.ipandc.com/workstationcranes.html
For the heavier bridge cranes, the manufacturers sell kits & components w/o the structural steel (as well as full cranes disassembled for shipment). They will furnish structural plans. Perhaps the fastest way to go.
The toprunner style is relatively simple and generally provides the greatest lifting height if you have ceiling constraints. The traditional underslung style has transverse cap beams which give it a sturdy, boxlike structure, so doesn't need as many columns nor the column bracing of toprunners.
http://www.contrxcranes.com/
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Two basic methods of providing electric power to the bridge and hoist is an important parameter:
1) Festoon system, with slung insulated cable, best for outdoors and moist/corrosive/dirty environments, and
2) Sliding contact conductor, better for heavier cranes. The conductor rails are commonly enclosed in flexible plastic with a slit for the sliding contact shoe (copper/graphite). E.g., 'SAF-T-BAR:'
http://www.ipandc.com/festoon.html
http://keepitmoving.com/index.html