Double Girder Explosion-Proof Crane with Electric Hoist (LHB)

These cranes are specifically rated for different types of hazardous zones. Knowing which zone your facility falls under is crucial for selecting the right crane.

• Zone 1 & Zone 2 – Suitable for areas with flammable gases or vapors.
• Zone 21 & Zone 22 – Suitable for areas with combustible dust.
• Compliant with GB3836, ATEX, and IECEx international standards, ensuring safe operation globally.

The hoist trolley is a critical component. Explosion-proof designs focus on preventing sparks and protecting sensitive parts.

• Sealed motors prevent sparks and protect internal components.
• Spark-proof wheels ensure safe travel along the crane rails.
• Protective enclosures safeguard electrical and mechanical parts from dust, gas, and moisture.

Explosion-proof cranes are most valuable where ordinary cranes cannot operate safely. They are used in environments that require both heavy lifting and high safety standards.

• Chemical plants and refineries for handling flammable liquids or drums.
• Pharmaceutical factories for safe transport of sensitive materials.
• Powder or bulk material workshops to prevent dust ignition.
• Warehouses handling flammable liquids or sensitive equipment requiring precise, safe lifting.

Using an explosion-proof crane is more than a safety measure—it also improves efficiency and longevity of operations.

• Safety: Design minimizes ignition risks and protects operators.
• Efficiency: Smooth lifting and trolley travel reduce downtime.
• Durability: High-strength steel construction and corrosion-resistant parts ensure long life.
• Customization: Available in multiple capacities, spans, and lifting heights to fit specific operational needs.

In short, explosion-proof overhead cranes with wire rope hoist trolleys are practical solutions that combine safety, efficiency, and flexibility. They keep your workplace secure while maintaining steady productivity.

The hoist trolley is the heart of the crane's lifting system. An explosion-proof design ensures that even under high load, the trolley operates safely in environments with flammable gases or combustible dust.

• Fully certified for hazardous zones (Exd II BT4 / CT4).
• Sealed motors and enclosures prevent sparks and protect electrical parts.
• Durable wire rope system capable of handling heavy loads reliably.

The double girder design provides extra strength and stability. It allows the crane to lift higher capacities and handle long spans without compromising safety.

• High-capacity lifting suitable for heavy machinery, chemical drums, and other industrial loads.
• Stable operation with minimal deflection, reducing wear on the hoist trolley and rails.
• Long service life due to reinforced steel and high-quality welding.

For facilities with limited vertical space, a low headroom configuration helps maximize lifting height. This ensures efficient use of the crane's full capacity without structural modifications.

• Compact design fits tight indoor spaces.
• Optimized lifting height without compromising safety.
• Easy installation in existing facilities with restricted clearance.

Explosion-proof cranes include multiple safety features to protect both operators and materials during operation. These devices ensure the crane operates reliably under demanding conditions.

• Limit switches to prevent over-travel of the trolley and hook.
• Overload protection to avoid lifting beyond capacity.
• Anti-sway devices for precise and controlled load movement.
• Emergency stop buttons for immediate shutdown in case of risk.

Safety and compliance are essential for cranes used in hazardous environments. These cranes meet globally recognized standards, providing confidence for industrial buyers.

• GB3836, certified for hazardous environments.
• Tested for Zone 1, Zone 2, Zone 21, and Zone 22 operations.
• Ensures safe and reliable performance for chemical, pharmaceutical, and petrochemical facilities.

Explosion-proof hoist cranes are practical, reliable, and customizable solutions. They combine robust construction, precise lifting, and full compliance with safety standards, making them ideal for demanding industrial applications.

Chemical and petrochemical facilities handle flammable liquids, reactive chemicals, and raw materials that require controlled lifting and transport. Explosion-proof cranes in these environments protect both workers and sensitive equipment while maintaining production efficiency.

• Typical Capacities: 5–50 tons, depending on plant size and load weight
• Typical Loads Handled: 0.5–30 tons per drum or container; 10–50 tons for reactors or machinery
• Specialized Hazardous Environment: Zone 1 and Zone 2 (flammable gases and vapors)
• Explosion-Proof Grade: Exd II BT4 or Exd II CT4 for hoist trolley and motor

Specialized Design Features:

• Spark-proof wire rope hoist trolley and sealed electrical enclosures
• Anti-corrosion coatings for chemical resistance
• Optional low-headroom design for compact plant areas

Oil and gas plants require lifting of pipes, pumps, compressors, and other heavy machinery in areas where flammable gases or vapors are present. Explosion-proof cranes allow precise positioning of heavy loads in open or semi-enclosed industrial spaces.

• Typical Capacities: 10–50 tons, spans up to 35 meters
• Typical Loads Handled: 1–25 tons for pumps or compressors; 10–50 tons for pipes and heavy equipment
• Specialized Hazardous Environment: Zone 1 and Zone 2 (flammable gases and vapors)
• Explosion-Proof Grade: Exd II BT4 / CT4 or ATEX-certified hoist trolleys

Specialized Design Features:

• Explosion-proof pendant or radio remote controls for operator safety
• Reinforced double-girder construction for heavy and irregular loads
• High-precision hoist control for safe positioning of pipes and pumps

Pharmaceutical plants handle powders, chemicals, and sensitive liquids, where contamination and dust explosions are key concerns. Explosion-proof cranes ensure smooth lifting while preventing ignition and maintaining strict hygiene standards.

• Typical Capacities: 3–20 tons
• Typical Loads Handled: 0.1–5 tons for chemical powders or liquids; up to 15 tons for tanks and equipment
• Specialized Hazardous Environment: Zone 21 and Zone 22 (combustible dust)
• Explosion-Proof Grade: Ex tD A21 IP54 or similar dust-proof hoist trolleys

Specialized Design Features:

• Dust-proof and spark-proof hoist trolley
• Smooth hoist travel to prevent powder spillage
• Optional stainless steel components for hygienic requirements

Plants processing cement, flour, chemical powders, or granular materials generate combustible dust. Explosion-proof cranes provide safe, controlled lifting while minimizing dust exposure and reducing ignition risk.

• Typical Capacities: 5–30 tons, depending on load density
• Typical Loads Handled: 0.5–10 tons for bags or small containers; 5–25 tons for bulk material bins or mixers
• Specialized Hazardous Environment: Zone 21 and Zone 22 (combustible dust)
• Explosion-Proof Grade: Ex tD A21 or Exd II CT4 hoist trolley with dust protection

Specialized Design Features:

• Enclosed hoist trolley to prevent dust ingress and sparks
• Anti-sway and overload protection for bulk loads
• Adjustable hoist speeds for gentle handling of sensitive materials

Explosion-proof overhead cranes with wire rope hoist trolleys can safely handle a wide variety of hazardous and heavy loads. Each crane is engineered to meet both weight and safety requirements in industrial hazardous zones.

• Chemical drums and barrels – Safely lift flammable liquids without sparks
• Flammable liquids and gases – Explosion-proof motor and hoist enclosures prevent ignition
• Heavy machinery and equipment – Pumps, compressors, and industrial tools in Zone 1/2
• Bulk powders and sensitive materials – Precision hoist movement reduces dust and prevents spillage
• Containers and packaging – Lifting hazardous or sensitive packages safely and efficiently

Explosion-proof hoist cranes ensure consistent safety, compliance, and operational efficiency in hazardous environments. Operators can move heavy or sensitive loads confidently, knowing the crane is designed to prevent sparks, reduce wear, and maintain stability even in challenging industrial conditions.

Before selecting a crane, clearly define the weight, size, and shape of the loads you will lift. This ensures the crane's capacity and hoist trolley design are appropriate for safe operation.

• Load Type & Weight: Determine if you are lifting drums, bulk material bins, heavy machinery, or sensitive powders. Choose a crane capacity with at least 20–30% safety margin above the maximum load.
• Lifting Height & Span: Measure the vertical lift and horizontal span needed. For low-headroom areas, consider cranes with compact hoist trolley designs to maximize lifting height.
• Multiple Loads: If lifting multiple items simultaneously (e.g., bundled drums), select a crane with dual hoist trolleys or higher capacity to maintain stability and control.

The hoist trolley is the heart of an explosion-proof crane. Selecting the right trolley ensures spark-proof, sealed, and reliable operation in hazardous zones.

• Explosion-Proof Grades: Use Exd II BT4/CT4 for flammable gas zones (Zone 1/2) and Ex tD A21 for combustible dust zones (Zone 21/22).
• Spark-Proof & Sealed Design: Trolleys must be fully enclosed to prevent sparks and ingress of dust or chemicals.
• Hoist Type: Wire rope hoists are ideal for heavy loads and long spans, while chain hoists can be used for smaller loads or tighter spaces.
• Optional Features: Anti-sway, overload protection, and smooth start/stop controls improve safety and precision.

The operating environment has a direct impact on crane design, durability, and safety. Take these factors into account when selecting your crane.

• Dust & Powder: Use dust-proof trolleys, sealed motors, and anti-static components to prevent ignition in Zone 21/22.
• Gas & Vapors: Ensure cranes are certified for Zone 1/2 explosive atmospheres. All electrical components must meet ATEX, IECEx, or GB3836 standards.
• Temperature & Humidity: For extreme heat, cold, or coastal environments, choose cranes with corrosion-resistant coatings and suitable motor insulation.

The expected usage of your crane determines its design and maintenance requirements. High-frequency operations demand durable components and robust safety devices.

• Duty Cycle Rating: Select cranes designed for continuous or heavy-duty operation if lifting is frequent. Light-duty cranes may wear out quickly in industrial plants.
• Maintenance Considerations: Choose cranes with easy access for inspection, lubrication, and replacement of key parts.
• Operational Efficiency: Remote controls, variable-speed hoists, and anti-sway devices improve handling of sensitive or heavy loads while reducing operator fatigue.

Practical Tip: Always align the crane's explosion-proof rating with the exact hazardous zone of your facility. Over-specifying is safer than underestimating, but excessive over-design may increase cost unnecessarily.

Before operating the crane, perform a thorough visual and functional inspection of all key components. Early detection of issues can prevent accidents and costly downtime.

• Hoist Trolley & Wire Rope: Check for wear, fraying, or deformation. Ensure the trolley moves smoothly along the bridge and the rope is properly seated.
• Hooks & Load Chain: Inspect hooks for cracks, bending, or excessive wear. Verify that safety latches are functioning correctly.
• Electrical Systems: Test controls, pendant switches, or remote systems for proper operation. Ensure all wiring and enclosures are intact and sealed.

Correct grounding and wiring are essential to prevent sparks in hazardous zones. Electrical safety cannot be overlooked in areas with flammable gases, vapors, or dust.

• Grounding: Verify that the crane and all associated equipment are properly grounded according to Zone 1/2 or Zone 21/22 requirements.
• Wiring & Connections: Inspect cable trays, conduits, and connections for insulation damage or loose terminals. Replace any damaged parts immediately.
• Explosion-Proof Seals: Ensure that all explosion-proof enclosures and seals are intact and correctly installed.

Routine maintenance prevents wear, reduces spark risks, and ensures the crane remains fully compliant with safety standards.

• Lubrication: Apply suitable lubricants to the wire rope, hoist gears, and trolley wheels as recommended by the manufacturer. Avoid excessive oil that could drip into hazardous areas.
• Component Checks: Regularly inspect brakes, limit switches, overload devices, and anti-sway mechanisms for proper function.
• Electrical Systems: Schedule inspections of motors, fuses, and controllers. Confirm that explosion-proof ratings are maintained over time.
• Documentation: Keep detailed records of all inspections, repairs, and component replacements for safety audits and regulatory compliance.

Practical Tip: Establish a daily, weekly, and monthly maintenance checklist tailored to your facility's hazardous zone classification. Regular inspection not only prevents accidents but also extends the service life of your explosion-proof hoist crane.

Explosion-proof cranes can be equipped with advanced safety devices to protect both personnel and equipment in flammable or combustible areas.

• Anti-Sway Devices: Stabilize the hoist trolley and load during lifting, reducing the risk of spills or accidents with powders, chemicals, or liquids.
• Emergency Stop: Instantly halts crane and hoist movement in hazardous situations, preventing potential sparks or collisions.
• Overload Alarms & Protection: Prevents the hoist from lifting loads beyond the rated capacity, ensuring safe operation in Zone 1, Zone 2, Zone 21, or Zone 22 environments.

Practical Tip: Anti-sway and overload protection are critical for explosion-proof cranes handling sensitive chemicals, flammable liquids, or combustible powders.

Explosion-proof hoist cranes can be operated safely using a variety of controls, allowing the operator to remain outside hazardous areas.

• Pendant Control: Wired control for precise operation in smaller hazardous zones.
• Radio Remote Control: Enables safe distance operation, reducing risk exposure in Zone 1/2 or Zone 21/22 areas.
• Cabin Operation: Provides full visibility and safe control for large explosion-proof cranes handling heavy or bulky loads.

Practical Tip: Radio remote controls are particularly effective in chemical plants, pharmaceutical facilities, or powder processing zones where operators must avoid dust or gas hazards.

Explosion-proof cranes can be fitted with hoist trolleys and attachments designed specifically for hazardous materials and heavy loads.

• Hooks: Explosion-proof hooks for drums, barrels, and industrial equipment.
• Magnets: Certified lifting magnets for steel billets, sheets, or coils in Zone 1/2 areas.
• Grabs & Clamps: For bulk materials, irregular loads, or packaged goods, designed for spark-proof operation.
• Compatibility: All attachments are fully rated for explosion-proof operation and integrate seamlessly with the hoist trolley.

Practical Tip: Always verify that attachments match the crane's explosion-proof rating to ensure safe operation in hazardous environments.

Explosion-proof hoist cranes can be engineered to fit your facility's physical layout and operational requirements.

• Custom Spans: Designed for your building width and crane runway configuration.
• Lifting Heights: Hoist trolleys and crane bridges can be optimized for low-headroom areas to maximize available lifting height.
• Hoist Speeds: Variable-speed hoists allow smooth handling of sensitive materials or rapid movement of heavy industrial equipment.

Practical Tip: Consult with your crane supplier to specify spans, lifting heights, and hoist speeds tailored to your hazardous environment and load type, whether it's chemicals, powders, or machinery.

They are certified for Zone 1, Zone 2, Zone 21, and Zone 22 hazardous areas.

• Suitable for flammable gases, vapors, and combustible dust environments.
• Certification ensures compliance with international standards like ATEX, IECEx, and GB3836.

The hoist trolley is fully enclosed and sealed to prevent sparks from contact or electrical components.

• All moving and electrical parts are designed to avoid friction and ignition sources.
• Anti-static materials and grounding reduce the risk of accidental sparks in hazardous zones.

Yes, explosion-proof cranes can be customized for high/low temperatures and dusty or powder-filled areas.

• Special coatings, insulated motors, and dust-proof trolleys maintain performance.
• Variable-speed hoists and enclosed components help handle sensitive materials safely.

BT4 is rated for flammable gases, while CT4 is suitable for flammable vapors or certain corrosive conditions.

• BT4 is commonly used in chemical or petrochemical plants (Zone 1/2).
• CT4 can also apply to some oil & gas applications, providing extra protection in challenging environments.

They can handle loads ranging from 0.1 tons to over 50 tons, depending on the application.

• Smaller capacities are used for powders, liquids, and tanks in pharmaceutical plants.
• Larger capacities handle machinery, reactors, pipes, and bulk materials in chemical, oil & gas, or steel plants.

Select a crane with at least 20–30% higher capacity than your heaviest expected load.

• Consider the size, weight, and shape of the materials.
• Factor in bundled loads, occasional overloads, and future expansion.

Pendant, radio remote, and cabin operation are all available for explosion-proof cranes.

• Pendant control is reliable for short-range lifting.
• Radio remote allows operators to stay clear of hazardous zones.
• Cabin operation is ideal for long-span cranes or heavy-duty lifting.

Custom spans, lifting heights, hoist speeds, and attachments can extend lead time slightly and impact cost.

• Each crane is designed to match facility layout, load type, and environmental hazards.
• Buyers can prioritize specific features such as low-headroom hoists, dual trolleys, or specialized attachments.

Standard devices include limit switches, overload protection, and emergency stops; anti-sway and alarms are optional.

• Optional devices improve precision, reduce accidents, and are particularly useful in chemical, pharmaceutical, or powder processing plants.
• Safety features ensure compliance with hazardous zone regulations.

Yes, explosion-proof cranes can be adapted for indoor or outdoor use in hazardous environments.

• Outdoor models may include weatherproof coatings and hoist covers.
• Indoor models can be optimized for low-headroom or compact spaces while maintaining full explosion-proof certification.

Focus on explosion-proof ratings, load capacity, hoist type, safety devices, and long-term maintenance support.

• Verify certifications (ATEX, IECEx, GB3836) and duty cycle ratings.
• Check optional features such as anti-sway, overload protection, and remote control capabilities.
• Evaluate service, spare parts availability, and installation support.

Yes, hooks, grabs, and magnets can be used, all rated for explosion-proof operation.

• Choose attachments based on load type: drums, barrels, bulk bins, steel coils, or machinery.
• Ensure all attachments integrate with the hoist trolley and meet Zone 1/2 or Zone 21/22 requirements.