Gantry crane
Weiyuan Explosion-Proof Double Girder Gantry Crane
Product Overview
The Weiyuan Explosion-Proof Double Girder Gantry Crane is engineered to provide maximum safety and reliability in hazardous environments where flammable gases or combustible dusts are present. With lifting capacities ranging from 20 to 50 tons, this crane combines the robust strength of a double girder design with specialized explosion-proof components. Every element, from the motors and electrical systems to the mechanical parts, is designed to prevent sparks and arcs, ensuring safe operation in high-risk industries. This crane is the definitive solution for heavy-duty lifting in chemical plants, oil and gas refineries, and other potentially explosive atmospheres.
Product Advantages
- Certified Safety for Hazardous Environments: The crane’s motors, electrical enclosures, and control systems are certified with an explosion-proof rating (e.g., Exd II BT4, CT4), ensuring it can operate safely in areas with flammable materials.
- Robust and Stable Lifting: The double girder structure provides exceptional stability and minimal deflection, which is critical for handling heavy loads from 20 to 50 tons safely and precisely in high-risk zones.
- High-Durability Construction: Built with high-strength steel and spark-resistant materials (like bronze or stainless steel) on key contact points, this crane is designed for longevity and safe performance in corrosive and volatile conditions.
- Factory-Direct Value: By offering this specialized crane at a factory price, we provide an economical solution for industries requiring high-level safety compliance without compromising on quality or performance.
- Comprehensive Customization: We tailor the crane to your facility’s specific safety standards and operational needs, including capacity, span, lifting height, and specific explosion-proof classifications.
Application Scenarios
- Chemical and Petrochemical Plants: Ideal for lifting and transporting reactors, pumps, and containers of hazardous substances where flammable vapors are a constant concern.
- Oil & Gas Refineries: Safely handles heavy equipment, pipes, and components during maintenance, shutdown, and production operations.
- Paint and Coating Facilities: Perfect for moving large batches of flammable liquids and materials in production and storage areas.
- Munitions and Explosives Manufacturing: Provides secure material handling in environments where the risk of explosion is extremely high and non-sparking equipment is mandatory.
- Mining Operations: Suitable for use in mines where methane gas or coal dust can create an explosive atmosphere.
Product Specifications and Dimensions
| Parameter | Details |
|---|---|
| Lifting Capacity | 20 Ton, 40 Ton, 50 Ton (customizable) |
| Span Range | 12m to 35m (customizable) |
| Lifting Height | 6m to 18m (customizable) |
| Explosion-Proof Grade | Exd II BT4 / CT4 (or as per application requirements) |
| Lifting Mechanism | Explosion-Proof Electric Hoist or Winch Trolley |
| Control Method | Explosion-Proof Pendant Control / Wireless Remote Control |
| Power Supply | 3-phase, 380V, 50Hz (or as per client’s requirements) |
| Working Duty | A4 to A6 |
| Core Components | Explosion-Proof Motor, Gearbox, Electrical Cabinet, Brakes |
| Compliance | ISO and CE Certified for hazardous environments |
Features at a Glance
- Explosion-Proof Hoist and Trolley: The entire lifting mechanism is housed in sealed, robust enclosures to prevent ignition of external atmospheric hazards.
- Spark-Resistant Wheels: Crane and trolley wheels are made from or coated with non-sparking materials to eliminate friction sparks during movement.
- Sealed Electrical Systems: All electrical cabinets, junction boxes, and wiring are fully sealed and certified to prevent any internal arc from igniting external gases or dust.
- Overload and Safety Protection: Equipped with an explosion-proof overload limiter and travel limit switches to ensure safe operation within rated limits.
- Durable Box-Girder Design: Provides superior strength and load distribution, essential for stable and secure operations in critical applications.
FAQ
1. What makes a crane “explosion-proof”?
An explosion-proof crane uses specialized components designed to prevent the ignition of surrounding flammable substances. This includes sealed motors and electronics to contain sparks, and the use of non-sparking materials like bronze on wheels and brake components to prevent frictional sparks.
2. How do I know which explosion-proof rating I need?
The required rating (e.g., Class, Division, Group, or Zone) depends on the specific type of hazardous material present in your facility (gas, dust, vapor) and its concentration. Our technical team can help you determine the correct classification based on your operational environment.
3. Is maintenance on an explosion-proof crane different?
Yes, maintenance must be performed carefully to ensure the integrity of the explosion-proof features is not compromised. Enclosures must be sealed correctly after inspection, and only certified replacement parts should be used. We provide detailed maintenance guidelines.
4. Can this crane be used both indoors and outdoors?
Yes, it can be configured for both indoor and outdoor hazardous environments. For outdoor use, we add extra weatherproofing and corrosion resistance in addition to the explosion-proof features.
5. Why choose a double girder design for an explosion-proof crane?
For heavy capacities (20 tons and above), a double girder design offers greater stability and safety, which is paramount in a hazardous environment. It allows for a more secure lift, higher hook height, and better overall control of the load.
