MET-TRACK® WORKSTATION BRIDGE CRANES
MET-TRACK® Workstation Bridge Cranes enable you to achieve effortless and reliable area-serving overhead handling for a wide variety of applications. Each system is configured with the operator in mind and includes the principle feature of ease of movement, designed to reduce fatigue and ensure accurate load positioning. Quality materials and construction ensure operational reliability and safety and facilitate long life combined with minimum maintenance.
SPECIAL DESIGNED SOLUTIONS
As a supplier of major materials handling projects worldwide, we are well experienced in dealing with turnkey installations where standard cranes are not considered ideal. We believe that providing the customer with all the required systems configured exactly to their needs is essential to ensure the installed project is ‘fit for purpose’. If you have a materials handling project and would like to take advantage of our experience then simply contact your dealer for further information.
BRIDGE CRANE FEATURES
BRIDGE CRANE INTRODUCTION
The MET-TRACK steel track design is one of high strength and low weight by combining the running track profile with standoff reinforcement to considerably increase span distances. The ‘V’ shaped profile of the running track ensures alignment of the trolleys and end truck and prevent dirt accumulation inside the tracks.
Machined wheels with crowned tread and precision sealed bearings fitted ensure absolute minimum rolling resistance and provide long operational life.
1) Four running track profiles to select from – 400, 500, 600 and 700 Series
2) Long spans of up to 30’ allow systems to be installed with the minimum of supports, maximizing the work cell layout
3) Enclosed track bridge cranes are up to three times easier to move than traditional bridge cranes
The MET-TRACK pre-engineered modular design allows for easy relocation and/or expansion by simply adding runway sections and/or additional bridges. Splice joints connect the track sections and are complete with vertical and horizontal adjustment screws, facilitating precise alignment of the track sections.
Floor mounted cranes can be installed on any normal 6” reinforced concrete floor. Support columns are designed to AISC specifications. If no movement of the support assembly is preferred then we recommend the use of bracing (not included). For further details contact your dealer.
For ceiling mounted cranes it is imperative that you seek professional advice on whether your building structure is capable of withstanding the forces generated by the workstation crane. A data sheet giving details on the applied forces relative to a crane system is available please contact your dealer for further information.
BRIDGE CRANE DESIGN & ERGONOMICS
1) BRIDGE LENGTH…
Keep the bridge length to a minimum, but bare in mind that the active travel for each bridge length is restricted due to the end stops and trolley lengths. Ensure your selected kit provides you with required active travel.
2) RATED CAPACITY…
The capacity is the live load that can be lifted by the crane system. The workstation crane is designed with an allowance of 15% for the weight of the hoist and the trolley; therefore a 1000lb bridge includes the allowance covering the combined hoist and trolley weight of up to 150lbs.
3) WORKING LOAD…
The working load must be selected according to each application task. Although the effort to move the crane bridge is small it can be further reduced by selecting the lightest size / weight of the system to suit the application i.e. for a 400lb maximum load select a 500lb capacity and not 1000lb.
In order to reduce the operational resistance to an absolute minimum we recommend that the trolley load pin height (LPH) is kept as low as possible with practical considerations applied to the minimum headroom requirements. LPH is measured from the top of the trolley load pin from which the hoist/lifting device is suspended.
5) RUNWAY LENGTH…
The length of the runway is generally unlimited and solutions can be provided for supports of 20’, 25’ and 30’.
For ceiling mounted systems 6’ supports are also available.
Operational time up to 100% of the work period and loads being lifted up to 50%, or below, the rated capacity or operational time less than 50% of the work period and loads being lifted are greater than 50% of the rated capacity.
TYPICAL CRANE CONFIGURATIONS
THE BASIC CRANE
The MET-TRACK crane system consists of bridges, runways, runway joint kits, end trucks, hoist trolleys and end bolts. These basic components can then be supported by standard floor mounted structures, ceiling mounted assemblies or special arrangements according to the application requirements. In addition it is possible to add either festoons or conductor systems to enable powerfeed for the chosen lifting device.
BRIDGE CRANE PROFILES
Metreel have various runways and bridge configurations to suit a wide range of applications. Metreel will select the optimal profile to suit your span, support centers and working load requirements.
FLAT SPINE BRIDGE
FLOOR MOUNT ASSEMBLIES
• Flush mount hanger assemblies
• Adjustment both laterally and longitudinally
• Low weight headers for easier handling during installation
CEILING MOUNT ASSEMBLIES
• Flush mount hanger assemblies
• Adjustment both laterally and longitudinally
• Sway Bracing – If complete stability is required
We offer many different mounting configurations to suit most requirements.
Here you can see the most common mounting options available. For other options please contact our sales office.
Ceiling mounted kits require sway bracing in all circumstances except where the runway is flush mounted to the support steelwork. Sway bracing kits are available, please refer to your dealer.
Flush Mount - Plain Runway
Flush Mount - Trussed Runway
Drop Rod - Plain or Trussed
BRIDGE CRANE COMPONENTS
Fitted at the end of the crane bridge and at the end of the runway festoon section. Utilized as standard on all systems with festoon power supply.
Utilized on power hoist systems for carrying the flat/round cable or hose from the static source to the moving hoist or bridge.
Facilitates the suspension of the hoist/lifting device from the bridge.
Provides a smooth running connection between the bridge and runway track. the horizontal side guidance wheels guard against ‘crabbing action’ which can arise if the runway tracks are installed slightly out of parallel.
Connect the top chord of the structure and link the track sections for precise alignment.
Fastened into the track via a through bolt. Resilient rubber bumper helps absorb impact forces at the track ends. (standard on all systems)
RUNWAY & BRIDGE CONDUCTOR SYSTEMS
The principle of a workstation bridge crane is to make the work of a user easier by designing the system to move freely. When power is required to the lifting equipment it is traditional that standard festoons provide this function, however not without problems.
As a standard upgrade option the MET-TRACK system has available an enclosed conductor system, named 4DUCTOR, that can be fitted to the runway and bridge if festoon loops would pose a problem. This simple to add system offers no resistance to the easy movement of a workstation crane but benefits the installation of end to end travel removing the need for festoon storage (festoon storage extension shown below).
• Continuous Copper Conductors
• Range of Standard Capacities
• Minimum Brush Wear
• Totally Enclosed Profile
• Simple to Install & Maintain
Conductor Capacity – Up to 4
Current Capacities – 50, 80, 125A
Protection – IP65
Housing Lengths – 6.5ft and 13ft
Temperature Range – -30°C to +60°C
Maximum Speed – 200ft/min
FESTOON STORAGE EXTENSION
4DUCTOR CONDUCTOR SYSTEM
STANDARD FESTOON SYSTEM
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