QC Electromagnetic Overhead Crane
Discover the QC Electromagnetic Overhead Crane, designed for efficient material handling. Enhance your operations with advanced technology and superior lifting capabilities. Explore our solutions today.
Send InquiryDiscover the QC Electromagnetic Overhead Crane, designed for efficient material handling. Enhance your operations with advanced technology and superior lifting capabilities. Explore our solutions today.
Send InquiryThe QC Electromagnetic Overhead Crane from Yuantai Crane is engineered to lift, transport, and precisely place magnetic loads such as steel billets, scrap, ingots, and sheet metal. It features a robust double-girder bridge supporting an industrial-grade electromagnet hoist, yielding high lifting capacity and reliable magnetic adhesion. Designed for steel mills, scrap yards, fabrication shops, and warehouses, this crane combines stringent safety standards, advanced automation, and customizable options to fit diverse applications.
Yuantai's QC Electromagnetic Overhead Crane is available in the following configurations:
Double Girder Electromagnetic Overhead Crane: Standard model with dual box-section girders and a central electromagnet hoist.
Single Girder Electromagnetic Overhead Crane: Compact version for lighter-duty operations.
Each model can be adapted for different spans (up to 30 m) and lifts (up to 15 m), and travel speeds to suit facility layouts. Magnetic hoist capacities range from 5 t to 50 t depending on electromagnet size and coil design.
The QC crane meets global and regional standards to ensure safety and performance:
CE Marking: Confirms conformity to essential health and safety requirements for mechanical design, electromagnetic compatibility, and noise emissions.
ISO 9001 Quality Management: Yuantai's production processes adhere to ISO 9001 certification for consistent, quality manufacturing.
OSHA 29 CFR 1910.179: Overhead and gantry cranes must include enclosed magnet circuit switches lockable in the open position, and means to discharge the inductive load of the magnet.
ANSI/ASME B30.2: Safety code for overhead and gantry cranes specifying load limiters, emergency stops, and operator controls.
Electromagnetic hoists also follow EN 13155 for lifting attachments and ISO 4309 for wire rope inspection and maintenance.
The double-girder bridge is fabricated from welded steel box sections (Q345B equivalent), stress-relieved to minimize weld distortion. Girders are cambered according to CMAA guidelines to compensate for deflection under load. The box girders provide a spacious trolley path and high torsional rigidity.
Each end truck houses dual AC gear motors and helical-bevel gearboxes that drive the crane along the runway rails. Wheels are forged steel with induction-hardened tread and flange profiles per ISO 4355 to ensure smooth travel and minimal rail wear.
The hoist unit comprises a multi-pole steel electromagnet coil assembly encased in a sealed housing. When energized, the electromagnet attracts ferrous loads; releasing power drops the load. The DC coil circuit includes:
Magnet Circuit Switch: Enclosed type, lockable in the open position, with discharge resistors to safely dissipate inductive energy.
Overtravel Limit Switches: Prevent over-lifting or over-lowering of the magnet hoist as mandated by OSHA 1910.179.
Load Limiter: Monitors applied load and suspends operation if capacity is exceeded.
The trolley runs on rails atop the girders, powered by dual independent drives. Variable frequency drives (VFDs) allow smooth acceleration and deceleration of the trolley, minimizing load swing. Brake systems are spring-applied, electrically released disc brakes rated for 125% of rated torque per OSHA requiremen.
Power is delivered via insulated busbars or festooned cable reels. The main control panel houses PLC-based logic controllers, contactors, and overload relays. Operator interfaces include:
Pendant Station: Wired push-button control with emergency stop.
Wireless Remote: Industrial-grade radio control with fail-safe stop.
Cabin Operation: Enclosed cabin with joystick controls and touch-screen HMI that displays load weight, magnet status, and system alarms in real time.
Mandatory devices include:
Upper and lower limit switches for hoist travel.
Bridge and trolley end limit switches.
Overload protection via load cells or torque sensors.
Emergency stop push-buttons on pendant, cabin, and control panel.
Anti-two-block switch to prevent hook block collision with the magnet assembly.
Audible horns and flashing warning lights during travel and lifting.
The electromagnet hoist provides rapid load pick-up and release, reducing handling time compared to mechanical grabs. It eliminates dangling scrap and avoids manual rigging, enhancing throughput in scrap yards and steel processing plants.
VFDs on all axes deliver smooth acceleration and deceleration. Anti-sway algorithms in the PLC reduce load oscillation, allowing operators to position loads accurately over target areas.
Integrated smart safety monitors track operating metrics—load weight, motor currents, coil temperature, and brake performance. Data is logged continuously and displayed on the HMI. Remote diagnostics enable off-site experts to review trends and predict maintenance needs before failures occur.
Welded steel structure and industrial-grade components withstand harsh environments. The coil housing and electrical cabinet are rated IP54 (higher ratings available) to protect against dust and moisture.
Operators choose between pendant, wireless remote, or cabin controls. Customizable control schemes support tandem hoist coordination for lifting ultra-large loads.
Modular design allows quick access to the magnet coil, trolley drives, and electrical panels. Standard components—motors, gearboxes, brakes—are widely available, reducing lead times for spare parts.
Trained Operators Only: Crane operators must be certified under OSHA or local regulations for hoist and magnet crane operation.
Daily Pre-Shift Inspection: Check magnet surface for wear, inspect coil insulation, test circuit switch operation, verify limit switch function, and observe brake performance.
Load Verification: Confirm load weight does not exceed magnet capacity. Overloading may damage coil windings or structural members.
Controlled Motion: Avoid abrupt starts and stops to minimize load swing. Lower loads gradually to prevent shock loading the electromagnet.
Environment: Keep the crane and magnet clean. Remove metal shavings from the magnet face after each lift. Avoid operation in severe weather if outdoor.
Power Shutdown: Always de-energize and lock out the magnet circuit switch before maintenance or coil replacement to prevent accidental energizing.
Rated Capacity: Match crane capacity to maximum load weight, including scrap bundles or steel plates.
Span and Lift Height: Determine required span (distance between runway rails) and maximum lift height (clearance needed under the magnet).
Duty Cycle: Select appropriate service class (CMAA A–F). Scrap handling often demands Class D or E for frequent cycles.
Control Preference: Choose pendant, cabin, or remote based on operational environment and visibility requirements.
Power Supply: Ensure facility power (380–480 V, 50/60 Hz) supports magnet current draw (often large DC or AC coil current).
Environment: For dusty, humid, or corrosive environments, request higher IP ratings and weather-resistant coatings.
Consult Yuantai's engineers with application details—load type, handling frequency, power source—to define the best QC Electromagnetic Overhead Crane configuration.
Routine Inspections: Conduct daily checks of magnet face, coil insulation resistance, limit switches, and brake operation.
Electrical Testing: Periodically measure coil resistance and insulation. Confirm circuit switch function and grounding integrity.
Mechanical Checks: Inspect trolley wheels, girder bolts, and welds for fatigue. Adjust brake clearances and gearbox oil levels per manual.
Smart Monitoring: Review logged data on motor currents and coil temperatures to detect anomalies. Schedule corrective actions before failures.
Preventive Maintenance: Follow Yuantai's maintenance schedule, which aligns with OSHA and CMAA guidelines for frequent and periodic inspections.
Proper maintenance prolongs crane life and ensures compliance with safety regulations.
Span & Height: Any span up to 30 m and lift height to 15 m can be engineered.
Control Systems: Add PLC-based load sequencing or integrate with facility SCADA.
Hoist Variants: Choose single or tandem electromagnets, or hybrid electro-mechanical hoists.
Safety Upgrades: Include anti-collision radar, CCTV monitoring, or advanced load-positioning lasers.
Environmental Packages: Weather shields, UV-resistant paint, or explosion-proof electrics for hazardous areas.
These options ensure each QC Electromagnetic Overhead Crane fits the precise needs of steel mills, scrap yards, fabrication plants, and warehouses.
By following international standards, employing industrial-grade components, and offering intelligent automation, the QC Electromagnetic Overhead Crane delivers safe, efficient, and reliable magnetic handling. Contact Yuantai Crane for a tailored quotation and expert guidance on integrating this crane into your material handling workflow.
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