tarca systems brochure - overhead cranes, bridge cranes ... · resistance (2 times easier than...
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CRANESPRE-ENGINEERED TARCA™ CRANE SYSTEMS
STYLE FREE STANDING & CEILING MOUNTEDCAPACITIES 2 TONS AND UPSPANS UP TO 60’TRACKS TARCA™ PATENTED TRACK
A Name Built on QualitySince 1977, Gorbel Inc. has specializedin overhead material handling solutions,providing the highest quality and highestperformance products on the markettoday. We are the leading supplier ofWork Station Crane systems, offeringnear perfect on-time delivery, a focus oncustomer service and the industry's bestwarranty.
Why Choose a Pre-EngineeredTarca™ Crane System?
Industry’s Best Warranty2 Years on all Crane systems.
Design ResponsibilityGorbel Crane Systems specify whichbeam to use for each application. Wedo not "Suggest" or "Recommend" anymaterials be used.
Ease of InstallationAll components are built and assembledwith jigs and fixtures which ensure easyinstallation.
Improved PerformanceTarca™ Systems are designed to besuperior to I-beam cranes in strength,durability, and consistency.
Local RepresentationGorbel cranes are sold and serviced bya nationwide network of material han-dling specialists that provide solutionssuited to your needs and your budget.
VersatilityGorbel makes a complete line of cranesto meet your individual needs
SafetyAll cranes are pre-engineered for powered hoist operation with an impactfactor of 15%.
GORBEL PRE-ENGINEERED TARCA™ CRANE SYSTEMS
Tarca™ Track For Durability andStrengthGorbel’s pre-engineered crane systems arebuilt using our unique patented Tarca™ Track,which continues to be the benchmark of theoverhead material handling industry.
Its three piece welded construction is a com-pound section of a mild steel top flange andweb and a specially rolled high-carbon steellower rail. Tarca™ systems are characterizedby consistently straight rail sections anddurable, high quality Tarca™ components. OurTarca™ systems offer unmatched versatility,durability and ease of installation.
Tarca™ Track has a mild steel top flange and web and a high carbon steel lower railwith raised tread to resist peening.
Continuous welding adds rigidity needed tocope with bending and twisting stresses ofthe most demanding applications.
The web and flange dimensions of each size are proportioned for maximumstrength and spanning efficiency.
Why Tarca™ Track OverStructural Steel Track?A structural I-beam is rolled from soft, mildsteel according to fairly loose steel mill tolerances. Its beveled flange preventswheels from making balanced contact, caus-ing uneven wear and a shortened track life.
Gorbel's unique Tarca™ Track, with its specialraised tread and high carbon track, is superi-or to I-beams in strength, durability and consistency. Our exclusive rails permit theuse of:
• Underhung carriers operating on a singlestraight, curved or inclined track
• Underhung cranes operating on two ormore straight track runways.
Time
Tarca™ Track
I-Beam
Trac
k Li
fe/E
ase
of M
ovem
ent
Tarca™ Outlasts and OutperformsI-Beams Over Time—Every Time!
Why choose Gorbel Pre-EngineeredTarca™ Track Systems for extendedcapacities?
• Tarca™ Track & components stand the test of time
• Lower installation costs
• High quality designs mean reducedmaintenance costs
TARCA™ TRACK: ENGINEERED FOR CRANE APPLICATIONS
Strong, Durable RailTarca™ vs. I-beam
High carbon flange means longer track lifeA common source of track wear is a process known as peening.Peening is the gradual movement of metal over time, caused by therolling action of wheels. Because of I-beam’s mild steel construction,peening tends to occur unevenly, weakening the beam flange andrestricting smooth easy travel.
Tarca™ Track’s raised tread design and extra hard alloy steel construc-tion slow down the peening process. The full width of the raised treadwears evenly, extending track life well beyond that of I-beams.
Our raised tread provides durability and superior safetyThe raised tread on Tarca™ Track is 20 - 25% of the Tarca™ rail thick-ness. And though this does add some strength, our stress calculationsdo not include the strength added by the raised wearing tread. Thatmeans you get even more strength and dependability because the ratedcapacity of the track is not affected by wear.
Since I-beams have virtually no raised tread, their initial load carryingcapacity is in the total cross section. As a result, capacity and safety aregreatly reduced as soon as the tread begins to wear.
100% weld penetration ensures qualityTarca™ Track is manufactured using stringent quality assurance procedures. This is the basis for certifying 100% weld penetration for maximum strength, safety and rigidity. Extreme care is taken duringtrack fabrication to maintain dimensional tolerances. Our tracks arestraight and true with minimum distortion, so:• Installs are quick and easy • Load distribution is uniform• Tracks and components last longer
Stop Throwing Away Your Installation Dollars!Our stringent quality standards in manufacturing guarantee consist-ently straight, high quality beams. Plate is cut to size and leveled by precision machinery. Special equipment uses continuous welds toinsure absolutely straight, uniform track. Standard mill practice dimensions for I-beams have tolerances more than twice those forTarca™ rail. For example, allowable sweep per 10' of structural beammay be as high as 1/4'' while Tarca™ rail is less than half that at 3/32''.
Is It Really Cheaper to Use an I-Beam?Consider the time and money you’re throwing away during installation:redrilling holes and cutting, fitting, and shimming rails in order to alignI-beams that aren’t straight. Our consistently straight rails result ineasy, predictable, cost effective installations.
Straight Rails Make System Expansions EasyThese tight quality standards even make system expansion and reorganization easier and more cost effective. Consistently straightbeams will reduce labor costs when you want to expand a crane system or rearrange a work area.
Peening caused the mild steel flange onthis I-beam (on right) to bend, making itcompletely unsafe for crane travel.
Our Weight Is In All the Right PlacesEfficient Design for SpanningThe thickness and width of Tarca™’s weband flange for each size have been careful-ly engineered to maximize strength andloading capability while minimizing weight.Tarca™’s three piece welded construction:• Delivers maximum load carrying capacity
to dead weight ratios • Provides ability to cost effectively span
longer distances• Eliminates costly additional supporting
structures • Reduces drag in a manual system
I-beam simply can not match Tarca™’s carrying capacity to dead weight ratio.Structural I-Beams are manufactured for a purpose other than overhead materialhandling. Because of this, they are manu-factured to much looser mill tolerancesthan many crane and monorail applica-tions require.
Standardized Lower FlangeStandardized lower flange providescompatibilityTarca™ track features the same 3-1/4” wide lower flange regardless of rail heightor load carrying capacity. • Allows systems to be easily expanded or
rearranged• Ensures compatibility of components• Lower costs when suspension points
vary
The lower flange of an I-beam increases inwidth and thickness as its depth increases.Beams of different sizes are therefore not compatible. The result? I-beam cranesystems are costly and difficult to expandor relocate.
Rugged, Long LastingComponentsHardened wheels to ride on high carbon trackOur forged, heat-treated wheels are built to last. They provide years of smooth, easy movement and reliable service.They have been: • Designed to roll with minimal
resistance (2 times easier than I-beam)• Machined to meet the surface of the
track for consistent, full contact andlonger life
• Engineered to avoid flat spots forsmooth, uniform rolling
Rugged end trucks and carriersGorbel end trucks have been carefullyengineered to provide the finest perform-ance with little or no maintenance.
Extended drive lifeAll gears and shafts in Gorbel drives aremade with a remarkable alloy-steel thatwas chosen after long, grueling tests.This special alloy allows the drives tohold up to the wear and tear of constantservice. This adds many years of reliableservice to the motor head.
Flexible SuspensionsFlexible suspensions provide longer system performance and lower maintenance costsTarca™ Track is suspended using ball andsocket connections, permitting the trackto float in all directions. This means it cancompensate for structural movement byallowing tracks to move and adjust tocrane wheel centers. This:• Prevents damaging stress • Dampens shock loads• Allows for smoother operation
In other words, Tarca™ rails can adjust toloads as they move, enabling carrierwheels to maintain consistent contact.This “load balance” of the wheels andcomponents allows for longer life withless maintenance.
Our Tarca™ Track’sstandardized lowerflange provides compatibility.
Case Study: Tarca™: A Better Solution than I-Beam
Gorbel Keeps Paper IndustryMoving
Seven Gorbel crane systems are the key tomoving product around a Pittsburgh manufac-turing plant. This plant manufactures fabricthat is used in the paper industry to drainwater out of the pulp mixture. On one end ofthe facility, the fabric is woven on looms usingfishing wire. These pieces of woven wire arethen seamed together in widths up to 40',taken off the loom and draped onto aluminumrolls.
These rolls weigh hundreds of pounds and their width makes them quite awkward tomanipulate. It is vital to the quality of thepaper that this fabric is free from impurities,so extreme care must be taken when han-dling these rolls.
Why was Gorbel the best choice for thisapplication?
Capacity 3-ton double girder cranes
Durability I-beam wears too quickly for a high duty cycle applicationlike this where cranes are lifting and positioning rolls at a rate of 15 to 20 lifts per shift.
Building Interlocks were neededDesign to move the fabric rolls around
building columns between thetwo systems. Gorbel interlocksare so safe and simple tooperate that transferring loads from one system toanother is quick and easy.
Headroom The design of the building Constraints created headroom
constraints. The size of I-beam needed for these loadswould not have fit within theconstraints of the building.
Our interlocks let you move your loads around any-thing —even building columns.
Runway 1
Bridge 1
Bridge 2
Runway 2
Crossover Track
1. Both bridge girdersapproach the crossovertrack. The operator push-es a button powering a gear motor that activates a pair of rollers.
2. The bridges line up with the crossover track.The rollers move from the interlocking beam towarda wedge type engagingmechanism on thecrossover track (see Photo 2).
3. The rollers make contactwith the wedge and self-align within 1-1/4" hori-zontal range. As both beams are inter-locked, forks on powered and non-powered beams areraised for free passage ofcarrier (see Photo 3).
4. To disengage the interlock, the operatorpushes a second button. Motor drivenrollers move back and away from wedge, allow-ing forks to drop andmake contact with rail tread. This prevents the carrier fromtravelling off the openend of the beam.
1
2
3
How do our interlocks operate?
Tarca™ RailTarca™ Track features specially rolledhigh-carbon alloy steel rail with raisedtreads welded to a steel flange and web.
Tarca™ is designed to provide maximumspanning capability for heavy loadswhile minimizing the weight of requiredmaterial. Its material properties resistpeening and assure a longer operatinglife than ordinary track designs.
Carriers (Trolleys)Gorbel carriers provide the connectionbetween the lifting device and thebridge. Our carriers are designed foryears of peak performance:• The wheel base is proportioned
for smooth, vibration-free carrier oper-ation.
• Swiveling yoke provides unmatchedperformance through curves andswitches on monorail systems, con-tributing to longer track life.
• Precision manufacturing and speciallydesigned wheels assure consistentwheel to rail contact.
• The extensive variety of our carriersprovides endless flexibility to tackleany application
• Manually driven carriers are also available
Motorized DrivesGorbel’s drives motorize the travel of carriers and end trucks. We offer:• A gear driven drive, the best choice
for most applications• A belt driven drive designed to be
a lower cost alternative to the geardriven drive
• A tractor driven drive for specialty systems, such as pulling loads up aslope or for use in wet conditions.
Our drives were specially designed to make them long wearing and easy toservice. • Guide rollers equipped with anti-
friction bearings align wheels on trackfor easy movement
• Split frame construction for easyremoval and reinstallation
1
Gorbel Bridge Components
2
4
3
16
5
Photo shows carrier with drive andSAFPOWRBAR™
Belt-driven modelshow here.
Hanger AssembliesOur hanger assemblies provide a connection between the Tarca™
track and structural support.
Ceiling Mount (shown)• Ball and socket design compen-
sates for structural shift• Teflon™ coated chair washers
provide durable, long lasting performance
Free Standing Mount (not shown)• Rigid mounted, bolted connection
between the header and Tarca™rail
• Easy to install• Maximizes headroom
Electrification Options(Brackets, Collector Shoe and Bar)Gorbel SAFPOWRBAR™ Electrificationis used to deliver electric power todrives and hoists. This rugged, durablesystem is made to perform in the most demanding applications and environments. • Inverted U-shaped conductor bars
enclosed by flame resistant insulatedcovers
• Fiberglass molded insulators for double insulation, making them saferand more efficient
• Sliding current collector shoes insidethe bars make positive, continuouscontact with three surfaces of the bar for longer life and easier mainte-nance.
End StopEnd stops are required and must beprovided at the ends of the carrier ortrolley travel and at the end of cranetravel on runways.
Our end stops are unique in that theystrike the end of the load bar, ratherthan the wheels. This prevents thewheels from absorbing the force of theload and reduces the areas of wear.
We offer standard wheel end stops forlighter applications and rubber, springor hydraulic bumpers for higher speedconditions.
5
7
6
2
3
Motorized end truckshown here.
End TrucksEnd truck with drive for motorized travel on runwayGorbel end trucks provide the con-nection between the bridge andrunway. These rugged end trucksgive you smooth, easy travel withlittle or no maintenance.
One advantage of our end trucksare their wheels. While other manufacturers have fixed wheels on their end trucks, our articulatingwheels allow for irregularities intrack and runways. End trucks canalso be manually driven.
The photo at left shows a system withSAFPOWRBAR™electrification.
You can also chooseInsul-8 Safe-Lec 2™ conductor bar for yourrunway electrification.
Free Standing or Ceiling Mounted Solutions for Every Application
Free Standing Pre-Engineered Systems Tarca™
Track Systems
Free Standing System available in Braced designs or completely FreeStanding designs:
Free Standing Braced Systems• Require the crane support steel to be tied back to another structure
(ie building columns) capable of resisting lateral and longitudinal forces. • Braced systems tend to be less expensive than completely Free Standing
systems.
Completely Free Standing Systems• Completely independent of other systems• Ideal for applications where there is no adequate support steel
SYSTEMS SPECIFICATIONSCapacities Up to 5 ton*
Spans Up to 60’Height Under Bridge 10’ - 20’Runway Support Centers 20’ - 60’ in increments**
* Consult factory for higher capacities ** Custom support centers available at no extra charge
“ We’ve experienced less
maintenance with the
Gorbel installation in
one year’s operation
than had been required
in a single week of
operation with the
I-beam runway just
prior to its replacement.”
Plant ManagerBabcock & Wilcox unit of J. Ray McDermott & Co.
Designed to be Low Maintenance!
n
Ceiling Mounted Pre-Engineered Systems forExtended Capacities
Both Free Standing and Ceiling Mounted Systems Include:• Runways, Bridge(s), End Trucks, Hanger Assemblies, runway electrification,
bridge festooning, crane drives, and controls. • Free Standing systems also include free standing structure• Bracing and hoists by others.
SYSTEMS SPECIFICATIONSCapacities Up to 5 ton*
Spans Up to 60’Height Under Bridge 10’ - 20’Runway Support Centers 20’ - 60’ in increments**
* Consult factory for higher capacities ** Custom support centers available at no extra charge
Capabilities
Free Standing Ceiling Mounted
Jib and Gantry Cranes Work Station Articulating
Seismic Zone IV Telescoping Interlock/TransferTractor Drives
G-Force
Your authorized Gorbel dealer can give you more
information on what makes Gorbel’s Ergonomic
Work Station Cranes and othermaterial handling products
“A Class Above.”
600 Fishers RunP.O. Box 593Fishers, NY 14453-0593 USAPhone: 585-924-6262Toll Free: (800) 821-0086Toll Free Fax (800) 828-1808www.gorbel.com
Intelligent Assist Devices
Specialty Products(Enclosed Track)
Bridge Cranes(Enclosed Track)
Jib and Gantry Cranes
©2005
Productivity & Safety