Double Girder Overhead Crane with Electromagnetic Chucks | Scrap Handling Crane


Short Video Description

This video shows a double girder overhead crane with electromagnetic chucks designed for indoor steel scrap handling, metal recycling, steel processing and industrial material handling. The crane uses a magnetic lifting system to pick up and move ferrous scrap, steel plates, steel bars and other magnetic metal materials.

The double girder overhead crane uses two main bridge girders, an electric hoist or open winch trolley, and an electromagnetic chuck suspended below the lifting mechanism. The double girder structure provides a rigid bridge configuration for applications requiring frequent lifting and positioning of heavy steel materials.

An electromagnetic overhead crane can handle steel scrap without using conventional hooks or mechanical grabs. When electrical power is supplied to the magnetic chuck, the electromagnet generates magnetic force to pick up ferrous materials. Power is then released or controlled to place the load at the required location.

For an indoor scrap handling crane, the main design parameters include lifting capacity, crane span, lifting height, working duty, magnetic chuck capacity, material type, load shape, working frequency, power supply and workshop layout.

Yuantai engineers select the double girder bridge, trolley, lifting mechanism, electromagnetic chuck, electrical control system and safety devices according to the actual scrap handling conditions rather than using one standard magnetic crane configuration.

Main Technical Specifications

ItemTechnical Specification
Crane type Double Girder Overhead Crane with Electromagnetic Chuck
ApplicationIndoor steel scrap handling / metal recycling / steel material handling
Rated capacity5 – 100 ton+, customized according to lifting requirements
Bridge structureDouble welded box girders or engineered double girder bridge structure
Crane span10 – 35 m+, customized according to workshop layout
Lifting height6 – 30 m+, customized according to required hook height
Hoisting systemElectric open winch trolley / electric hoist trolley
Magnetic lifting systemElectromagnetic chuck / lifting magnet / magnetic lifting beam
Magnetic chuck capacitySelected according to steel material type, dimensions, temperature and required lifting weight
Hoisting speed3 – 12 m/min, customized
Trolley speed20 – 40 m/min, VFD available
Crane travelling speed20 – 40 m/min, customized
Duty classISO A5 – A8 / FEM 2M – 5M, according to working frequency
ControlPendant / Radio Remote / Operator Cabin
Power supply380V / 50Hz / 3Ph standard; 400V, 415V, 440V, 460V and 60Hz available
Magnet power supplyIndependent electromagnetic power system with electrical control and protection
Safety devicesOverload limiter, lifting limit switch, travelling limit switch, emergency stop, buffers, warning alarm and magnet control protection
Working environmentSteel plants, scrap yards, metal recycling plants, fabrication shops, steel warehouses and indoor material handling areas
Yuantai Crane engineeringYuantai engineers integrate the double girder bridge, trolley, electromagnetic chuck, electrical system, wheel loads and workshop layout into one complete crane solution.

How Does an Electromagnetic Overhead Crane Handle Steel Scrap?

An electromagnetic overhead crane uses a lifting magnet to pick up ferrous materials. When the electromagnetic chuck is energized, magnetic force attracts the steel material and holds it during lifting and horizontal movement.

The crane trolley positions the magnetic chuck above the scrap. After the magnet is energized, the crane lifts the material and moves it to the required location. The magnet is then released according to the control system to unload the steel scrap.

This makes a magnetic overhead crane suitable for repetitive handling of loose steel scrap, steel pieces, plates, bars, billets and other ferrous materials.

Double Girder Overhead Crane with Magnet vs Grab Bucket Crane

ItemElectromagnetic CraneGrab Bucket Crane
Lifting methodMagnetic forceMechanical grab bucket
Suitable materialFerrous steel and magnetic metalScrap, coal, sand, aggregate and bulk materials
Loose steel scrapVery suitable for magnetic steel scrapSuitable depending on scrap size and material condition
Steel platesSuitable for flat ferrous steel materialsGenerally less suitable
Loading methodMagnetic pickupGrab bucket closing and lifting
ControlElectrical magnet controlMechanical / hydraulic / rope grab system
Typical applicationSteel scrap yards, steel mills and metal recyclingBulk material handling and mixed scrap handling

Why Use a Double Girder Overhead Crane for Steel Scrap Handling?

A double girder overhead crane for scrap handling is often selected when the application requires frequent lifting, large working coverage and a higher-duty crane structure.

  • Rigid double girder bridge for heavy-duty operation
  • Suitable for repetitive steel scrap handling
  • Large workshop coverage with customized span and runway length
  • Compatible with electromagnetic lifting chucks
  • Suitable for indoor steel warehouses and recycling plants
  • Can be designed for high working frequency
  • Radio remote control or operator cabin available
  • VFD control available for smoother positioning

Electromagnetic Chuck Selection for Scrap Handling

The magnetic chuck should not be selected only according to the rated crane capacity. The actual magnetic lifting force depends on the steel material, material thickness, surface condition, temperature, shape, contact area and lifting position.

For example, loose steel scrap may have irregular shapes and limited magnetic contact area. Long steel plates, billets and steel bars have different lifting characteristics. Yuantai engineers therefore select the electromagnetic chuck according to the actual material being handled.

Material ConditionImportant Design Consideration
Loose steel scrapIrregular shape, contact area and material distribution
Steel platesPlate thickness, surface condition and contact area
Steel barsMaterial length, diameter and arrangement
BilletsWeight, dimensions and surface temperature
Hot steelHigh-temperature conditions require specially selected lifting magnets

Indoor Magnetic Crane for Steel Scrap Yards

An indoor magnetic crane is commonly installed inside steel warehouses, scrap processing buildings and metal recycling workshops where steel materials need to be moved between storage, processing and loading areas.

Compared with mobile material handling equipment, the indoor overhead scrap crane travels along a fixed runway and can cover a large working area without occupying the floor with the crane structure.

The final runway length, crane span and lifting height are designed according to the building layout and required material flow.

Main Design Factors for a Steel Scrap Overhead Crane

Design FactorWhy It Matters
Crane capacityDetermines the bridge and lifting mechanism requirements.
Scrap weightDetermines the required magnetic lifting capacity.
Material typeAffects magnetic lifting performance.
Material temperatureHigh-temperature steel may require a specially designed magnetic system.
Crane spanDetermines the horizontal working coverage.
Lifting heightDetermines vertical material clearance.
Duty classDetermines the crane's mechanical and structural service level.
Working frequencyImportant for selecting motors, brakes, magnet and electrical components.
Workshop layoutDetermines runway length, loading points and scrap storage coverage.

Typical Applications of Electromagnetic Overhead Cranes

A double girder electromagnetic overhead crane can be used for:

  • Steel scrap handling
  • Metal recycling plants
  • Steel warehouses
  • Steel mills
  • Steel plate storage
  • Billet handling
  • Steel bar handling
  • Fabrication workshops
  • Scrap sorting and processing areas
  • Indoor loading and unloading areas

How Yuantai Designs a Double Girder Magnetic Overhead Crane

Yuantai Crane designs the double girder magnetic crane according to the actual material handling process rather than selecting the crane and electromagnetic chuck separately.

  • Confirm the required lifting capacity
  • Identify the type and dimensions of the steel material
  • Check material temperature and working conditions
  • Determine the required magnetic chuck capacity
  • Select the double girder bridge structure
  • Select the appropriate open winch or hoist trolley
  • Calculate wheel loads and runway reactions
  • Select magnet power supply and electrical controls
  • Check emergency release and safety requirements
  • Match the crane working envelope to the scrap storage layout

This integrated approach helps ensure that the electromagnetic overhead crane, lifting magnet, trolley, electrical system and runway work together as one material handling system.

FAQ: Double Girder Overhead Crane with Electromagnetic Chuck

Common questions about magnetic overhead cranes, steel scrap handling, electromagnetic chucks and indoor double girder crane systems.

1. What is a double girder overhead crane with electromagnetic chuck?

A double girder overhead crane with electromagnetic chuck is an overhead travelling crane equipped with a magnetic lifting device instead of a conventional hook for handling ferrous materials.

The double girder bridge supports the lifting trolley and provides the required crane coverage for steel scrap, plates, bars and other magnetic metal materials.

2. Can an electromagnetic overhead crane handle steel scrap?

Yes. An electromagnetic overhead crane is widely used for handling ferrous steel scrap and other magnetic metal materials.

The actual lifting capacity depends on the scrap size, shape, material condition, contact area and electromagnetic chuck design. Irregular scrap should be evaluated before the magnet capacity is selected.

3. What materials can a magnetic overhead crane lift?

A magnetic overhead crane can handle ferrous materials such as steel scrap, steel plates, bars, billets and other magnetic steel products.

Non-ferrous materials such as aluminum, copper and many stainless steel grades cannot be handled by a conventional electromagnetic lifting chuck in the same way as ferrous steel.

4. Is a double girder crane better for heavy scrap handling?

A double girder overhead crane is often selected for heavy-duty scrap handling because the double bridge structure provides good rigidity and can accommodate higher capacities and more demanding duty classes.

The correct crane type still depends on the required capacity, span, working frequency, lifting height and material handling process.

5. How is the electromagnetic chuck selected?

The electromagnetic chuck is selected according to the material type, scrap dimensions, weight, surface condition, temperature, contact area and required lifting capacity.

Yuantai engineers consider these factors together with the crane capacity and working cycle to select the appropriate magnetic lifting system.

6. What information is needed for a magnetic crane quotation?

Provide the lifting capacity, crane span, lifting height, runway length, steel material type, maximum scrap weight, material dimensions, working frequency, duty class and power supply.

Photos or drawings of the steel scrap and the indoor working area are especially useful for selecting the correct electromagnetic chuck and crane configuration.

7. What experience does Yuantai Crane have with magnetic overhead cranes?

Yuantai Crane has engineering and manufacturing experience with double girder overhead cranes, electromagnetic overhead cranes, magnetic lifting cranes, steel scrap cranes and heavy-duty industrial lifting systems.

For each project, Yuantai engineers review the double girder bridge, trolley, electromagnetic chuck, electrical control system, wheel loads, runway structure and actual steel handling conditions together.

Need a Double Girder Electromagnetic Overhead Crane?

Send us your lifting capacity, crane span, lifting height, runway length, scrap material type, maximum scrap weight, working frequency, duty class, power supply and workshop layout.

Yuantai Crane can engineer a double girder overhead crane with electromagnetic chuck for steel scrap handling, metal recycling, steel warehouses and other indoor industrial material handling applications.

Article by Bella ,who has been in the hoist and crane field since 2016. Bella provides overhead crane & gantry crane consultation services for clients who need a customized overhead travelling crane solution.Contact her to get free consultation.


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