Grab & Magnet Dual-Purpose Overhead Crane

The QP Grab & Magnet Dual-Purpose Overhead Crane is designed for efficient material handling using both a grab bucket and an electromagnetic lifter. Here’s an overview of its structure and operation:

• Model Explanation: The “QP” in the model indicates a grab and electromagnetic overhead crane. For example, QP 10-18.5A5 indicates a crane with a rated lifting capacity of 10 tons, a span of 18.5 meters, and an A5 duty cycle.

• Structure Components:

• Box Girder: The main load-bearing structure of the crane, made from welded box-type beams for high strength and rigidity.

• Grab Trolley: Installed on the girder, it holds the grab bucket or electromagnetic lifter. It includes lifting and opening/closing mechanisms.

• Travel Mechanism: Allows movement along the factory track, powered by a motor, gearbox, and wheels.

• Operator Cabin: Provides a space for operators to control and monitor crane movement. Available in open or closed designs.

• Electrical Control System: Includes control panels, operation consoles, and cable drums for precise operation and safety.

• Operating Principles:

• Grab Operation: Four steel ropes are attached to the lifting and opening/closing drums. The opening mechanism closes the grab, which then lifts materials. During unloading, the grab opens to release the load.

• Electromagnetic Lifter: Converts AC to DC power via a silicon-controlled rectifier and supplies it to the electromagnet. The magnet then lifts ferromagnetic materials.

Advantages of Grab & Magnet Dual-Purpose Overhead Cranes

1. Versatile Material Handling

• Dual-function design: Switch between a grab bucket (for scrap and bulk materials) and an electromagnetic lifter (for steel plates, coils, and scrap metal).

• Wide use: Ideal for steel mills, recycling plants, ports, warehouses, and heavy industries.

• High Efficiency & Cost Savings

• No manual bundling: The electromagnet lifts loose iron scraps, nails, and sheets without packaging, saving labor and time.

• Quick attachment change: Adapt easily to different materials (scrap, ore, steel) without needing separate cranes.

• Superior Safety & Reliability

• Emergency power backup: Battery system keeps magnetism for over 30 minutes during power cuts to avoid accidents.

• Advanced safety features: Includes overload limiter, anti-collision sensors, emergency stop, and anti-fall mechanisms.

• Durable construction: Made with Q345B steel, CNC-cut precision, and epoxy zinc-rich coating for corrosion resistance.

• Customizable Configurations

• Grab options: Choose from parallel/vertical grabs, 2-lobe or 4-lobe designs, and mechanical/electro-hydraulic controls.

• Magnet strength: Handles loads from 5t to 16t with strong electromagnetic force for secure lifting.

• Indoor/outdoor use: Weatherproof features like rain covers and temperature-resistant parts.

• Smart & User-Friendly Design

• Ergonomic control cabin: Options for side, end, or top entry with clear visibility and safety alarms.

• Real-time monitoring: Large-screen display shows load weight, height, and status.

• Smooth operation: Precision cable drum and heat-treated gear systems ensure stable, low-maintenance performance.