Two Purpose Bridge Crane (Grab & Hook)

PRODUCT OVERVIEW

Product Description: QN Grab & Hook Bridge Crane

Model Meaning
The QN model represents a grab & hook bridge crane with a single trolley. The model number typically indicates: Crane QN rated lifting capacity-span work class. For example, Crane QN 16/5-16.5A6 means a rated capacity of 16/5t (main hook 16t, auxiliary hook 5t), a span of 16.5m, and an A6 work class.

Structure

Bridge Frame: Main structure made of box-section girder for high strength and stiffness. It supports the crane components and bears loads.
Trolley Mechanism: Moves along the track in the factory, powered by motors, gearboxes, and wheels for horizontal movement.
Hoisting Trolley: Moves along the main beam's track and is equipped with lifting and opening/closing mechanisms for handling materials.
Electrical Control System: Includes control cabinets, operation panels, and electrical components for controlling lifting, lowering, and trolley movements.

Working Principle

Grab Operation: The grab uses four steel ropes wrapped around lifting and opening/closing drums. The closing mechanism grabs material, then the lifting mechanism raises it.
Hook Operation: The hook is connected to the lifting mechanism with steel ropes. The motor drives the winch to raise or lower the hook to lift or release materials.

Why Choose Our Two-Purpose Bridge Crane (Grab & Hook)?

1. Safety & Reliability

Advanced Safety: Overload limiter, dual limit switches (lifting/traveling), interlocking protection, and emergency stop.
Accident Prevention: Buffers, track sweep plates, shields, and busbar protection.
Motor Protection: Main disconnect switch, motor overload protection, and low-voltage safety cutoffs.

2. Strong Build & Compliance

Certified Quality: Meets ISO, CE, and GOST standards, with A7 work duty classification for heavy industrial use.
Durable Materials:

Main Girder: Made from seamless Q235B/Q345B carbon steel for max load capacity.
Winch Trolley: Lightweight design, transfers load directly to end beams for better stability.
Wheels: Vacuum-cast for durability and smooth operation.

3. Flexible Grab & Hook Options

Custom Grabs: Includes clamshell and orange peel grabs for bulk materials like scrap, gravel, and grain.
High-Performance Hook: ZPMC-brand spreader for secure lifting.

4. Intelligent Safety Features

Triple Limit Switches: Prevents overrun during lifting, crane travel, and trolley travel.
Overload Protection: Real-time weight monitoring with automatic shutdown.
Emergency Stop: Immediate response in dangerous situations.

5. Global Support & Customization

Hazard-Adaptable: Explosion-proof or acid-resistant designs for extreme environments.
Complete Service: From design to installation, with on-site engineer support and training.

FAQ

Q: What details are needed for a quote?
Provide lift capacity, span, lift height, and power specifications for accurate pricing.

Q: What industries do you serve?
Steel mills, ports, warehouses, and hazardous environments (custom solutions available).

Q: How does your crane outperform competitors?
Direct-load trolley design, F-class motor protection, and global compliance (ISO/CE/GOST) for long-lasting performance.

Q: Do you offer installation support?
Yes! Our engineers provide onsite guidance or remote assistance worldwide.

APPLICATION SCENARIO

Ideal Applications for Two-Purpose Bridge Crane (Grab & Hook)
Our dual-function bridge crane is designed for heavy-duty material handling across industries, offering grab bucket precision and hook versatility for maximum efficiency.

1. Ports & Terminals

Bulk Cargo Handling: Load/unload coal, ore, sand, and gravel from ships or trucks.
Container Yards: Move scrap metal or loose debris with high-capacity grabs.

2. Power Plants & Energy Sector

Coal/Fuel Management: Transfer bulk fuel to boilers or storage areas.
Ash & Slag Removal: Efficiently clear waste with heat-resistant grabs.

3. Steel Mills & Smelting Workshops

Scrap Metal Processing: Handle recycled steel or raw materials in production lines.
Foundry Operations: Transport molten slag or casting residues safely.

4. Chemical & Industrial Plants

Bulk Material Handling: Manage fertilizers, salts, or granules in corrosive environments (custom acid-proof options available).
Hazardous Zones: Explosion-proof models for flammable material handling.

5. Warehouses & Logistics

Heavy Palletized Goods: Use the hook for machinery, containers, or large equipment.
Bulk Storage: Stack or retrieve loose materials like grain or cement.

Why It Works
✔ Adaptable: Easily switch between grab (for bulk) and hook (for unit loads).
✔ Harsh-Ready: Corrosion-resistant coatings and F-class motor protection for extreme conditions.
✔ Safety-Compliant: Meets ISO/CE/GOST standards for ports, smelting, and chemical zones.

Applications

Ports: Load/unload bulk cargo like coal, ore, and grain, or containers.
Steel Mills: Handle raw materials like iron ore, coke, scrap steel, and finished products.
Power Plants: Handle coal, ash, and slag, or lift equipment and parts during maintenance.
Other Industries: Use in cement, chemical, and construction industries for moving bulk materials and equipment.

Safety Considerations

Operator Training: Operators must be trained, familiar with the crane's performance and safety procedures, and certified before operation.
Safety Device Check: Inspect safety devices like limiters, buffers, and travel limiters before use. Repair or replace if needed.
Material Check: Ensure the material's weight and size match the crane’s rated capacity to avoid overloading or inadequate lifting height.
Operation Guidelines: Follow the operating procedures to avoid sudden movements or impacts that could destabilize materials or the crane.

CERTIFICATE

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