Product Introduction
An Explosion-Proof Double Girder Overhead Crane is a specialized overhead lifting solution designed for hazardous environments where flammable gases, vapors, combustible dust, or explosive atmospheres may exist. It is commonly used in chemical plants, petrochemical facilities, oil and gas industries, paint workshops, pharmaceutical factories, fuel storage areas, hazardous warehouses, and other industrial sites requiring strict lifting safety and reliable material handling performance.
Compared with a single girder explosion-proof overhead crane, a double girder explosion-proof overhead crane has two main girders and usually provides higher lifting capacity, larger span, better hook approach, higher lifting height, and stronger structural rigidity. It is especially suitable for medium-duty and heavy-duty lifting operations in hazardous working areas. The lifting mechanism is usually an explosion-proof electric hoist trolley or an explosion-proof winch trolley, depending on lifting capacity, working duty, lifting height, and project requirements.
ZOKECRANE explosion-proof double girder overhead cranes are designed and manufactured by Henan Zoke Crane Co., Ltd., a professional lifting equipment manufacturer specializing in overhead cranes, gantry cranes, electric hoists, trolley mechanisms, and customized lifting solutions. Our manufacturing base is located in Changyuan, Henan Province, one of China’s major crane production centers. With extensive experience in crane engineering, design, and manufacturing, ZOKECRANE provides efficient and practical lifting solutions for different industrial applications and overseas projects.
A typical explosion-proof double girder overhead crane consists of two main girders, end carriages, an explosion-proof trolley, lifting mechanism, crane traveling mechanism, electrical control system, safety protection devices, operator control system, and supporting components. The crane travels along runway beams installed on both sides of the workshop, while the trolley travels on rails mounted on the top of the double girders. This structure allows the crane to provide stable lifting, accurate positioning, and efficient material transportation across the working area.
ZOKECRANE can customize explosion-proof double girder overhead cranes according to lifting capacity, span, lifting height, working duty, crane traveling length, trolley type, lifting speed, traveling speed, control method, power supply, explosion-proof grade, hazardous area classification, gas group, dust type, temperature class, protection level, ambient temperature, installation conditions, and destination country standards. For hazardous environments, correct product selection is very important. Customers are advised to provide detailed information about the working condition before ordering.
With ISO, CE, and SGS certifications, ZOKECRANE continuously improves product structure, manufacturing processes, and quality control standards to better serve international markets. Our products have been supplied to customers in Russia, Uzbekistan, the Philippines, Bangladesh, Australia, Qatar, Tanzania, Singapore, Saudi Arabia, Brazil, Nigeria, and many other countries and regions. ZOKECRANE remains committed to providing reliable crane equipment, professional technical support, and customized lifting solutions for global customers.
Main Features of ZOKECRANE Explosion-Proof Double Girder Overhead Crane
- Designed for hazardous and explosive industrial environments
- Double girder structure with high strength and stable performance
- Suitable for medium-duty and heavy-duty lifting applications
- Higher lifting capacity and larger span compared with single girder cranes
- Equipped with explosion-proof hoist trolley or explosion-proof winch trolley
- Explosion-proof motors, electrical components, control boxes, and safety devices available
- Suitable for flammable gas, vapor, and combustible dust environments according to project requirements
- Smooth lifting, trolley traveling, and crane long traveling operation
- Customized lifting capacity, span, lifting height, working duty, and speed
- Pendant control, wireless remote control, and cabin control available
- Customized power supply, such as 220V, 380V, 415V, 440V, 50Hz or 60Hz
- Safety devices such as overload protection, lifting limit switch, traveling limit switch, emergency stop, buffer, brake, and end stop available
- Can be customized for indoor, outdoor, or semi-outdoor applications
- Suitable for chemical, petrochemical, oil and gas, pharmaceutical, paint, coating, fuel, and dust-related industries
- Designed for export projects with professional packaging, documentation, and logistics support
- Customized according to workshop layout drawings and local hazardous area requirements
Main Components
An explosion-proof double girder overhead crane is composed of mechanical structures, lifting mechanisms, traveling mechanisms, electrical systems, and safety protection devices. Each component should be selected according to the lifting requirement and hazardous working environment.
| Component | Description | Function |
|---|---|---|
| Double Main Girders | Two main load-bearing beams designed to support the lifting trolley and load. | Provide high structural strength, stable lifting performance, and larger lifting capacity. |
| End Carriages | Installed at both ends of the double girders and equipped with crane traveling wheels. | Allow the complete crane bridge to travel along runway rails. |
| Explosion-Proof Hoist Trolley | A trolley equipped with an explosion-proof wire rope hoist or lifting mechanism. | Performs lifting and cross traveling movement on the double girder crane. |
| Explosion-Proof Winch Trolley | A heavy-duty trolley equipped with winch lifting mechanism and explosion-proof components. | Used for higher lifting capacity, higher working duty, and heavy-duty hazardous applications. |
| Lifting Mechanism | Includes lifting motor, reducer, drum, wire rope, hook block, brake, and related components. | Lifts and lowers the load safely and efficiently. |
| Explosion-Proof Lifting Motor | Special motor used for the lifting mechanism in hazardous environments. | Provides lifting power while meeting special hazardous area requirements. |
| Explosion-Proof Traveling Motor | Motor used for trolley traveling and crane long traveling mechanisms. | Provides horizontal movement for the trolley and crane bridge. |
| Crane Traveling Mechanism | Includes motors, reducers, wheels, shafts, couplings, and transmission parts. | Drives the complete crane bridge along the workshop runway system. |
| Trolley Traveling Mechanism | Traveling mechanism mounted on the trolley and moving along rails on the main girders. | Allows the hook and load to move across the span of the crane. |
| Explosion-Proof Control Cabinet | Electrical control cabinet or control box designed for hazardous area applications. | Controls lifting, trolley traveling, crane traveling, protection, and safety functions. |
| Electrical System | Includes cables, cable carrier, conductor system, control components, wiring, and electrical accessories. | Supplies power and control signals for crane operation. |
| Operator Cabin | Optional operator control room installed under or beside the crane bridge. | Provides centralized operation for large-capacity or heavy-duty cranes. |
| Pendant Control | Button control device connected to the crane by cable. | Allows operators to control lifting and traveling functions near the working area. |
| Wireless Remote Control | Optional control system for operation from a safe and convenient distance. | Improves operational flexibility and visibility in some working conditions. |
| Limit Switches | Installed for lifting, trolley traveling, and crane traveling limits. | Help prevent over-lifting, over-lowering, and excessive traveling movement. |
| Overload Protection | Safety device used to prevent lifting loads above the rated capacity. | Improves crane safety and protects mechanical and structural components. |
| Brake System | Brakes installed in lifting and traveling mechanisms. | Controls stopping, holding, and safe operation of crane movements. |
| Buffer and End Stop | Installed at crane and trolley travel ends. | Reduce impact and prevent over-travel under abnormal conditions. |
| Runway System | Runway beams and rails installed on both sides of the workshop. | Supports the long traveling movement of the overhead crane. |
Common Types of Explosion-Proof Double Girder Overhead Crane
ZOKECRANE can provide different types of explosion-proof double girder overhead cranes according to lifting capacity, working duty, trolley structure, plant layout, and hazardous area classification.
| Type | Description | Typical Application |
|---|---|---|
| Explosion-Proof Double Girder Overhead Crane with Hoist Trolley | Uses an explosion-proof wire rope hoist trolley as the lifting mechanism. | Medium-duty hazardous workshops, chemical plants, paint workshops, pharmaceutical factories |
| Explosion-Proof Double Girder Overhead Crane with Winch Trolley | Uses a heavy-duty explosion-proof winch trolley for higher lifting capacity and working duty. | Petrochemical plants, oil and gas facilities, heavy equipment maintenance workshops |
| Low Headroom Explosion-Proof Double Girder Overhead Crane | Designed to improve lifting height utilization in workshops with limited vertical space. | Low-clearance hazardous workshops and special production areas |
| Cabin-Controlled Explosion-Proof Double Girder Crane | Equipped with an operator cabin for centralized crane operation. | Large-span, heavy-duty, or high-frequency lifting operations |
| Remote-Controlled Explosion-Proof Double Girder Crane | Controlled by wireless remote control for flexible operation. | Hazardous areas where operators need safe distance and better visibility |
| Customized Explosion-Proof Double Girder EOT Crane | Designed according to special lifting capacity, span, lifting height, duty class, speed, power supply, and hazardous area requirements. | Special industrial projects requiring customized explosion-proof lifting solutions |
Typical Technical Parameters
The following parameters are for general reference. ZOKECRANE can customize explosion-proof double girder overhead cranes according to customer requirements, workshop layout, hazardous environment, working duty, and destination country standards.
| Item | Specification |
|---|---|
| Product Name | Explosion-Proof Double Girder Overhead Crane |
| Alternative Name | Explosion-Proof Double Girder Bridge Crane / Flameproof Double Girder Overhead Crane / Explosion-Proof Double Girder EOT Crane |
| Lifting Capacity | 5 ton, 10 ton, 16 ton, 20 ton, 32 ton, 50 ton or customized |
| Span | 10.5 m, 13.5 m, 16.5 m, 19.5 m, 22.5 m, 25.5 m, 28.5 m or customized |
| Lifting Height | 6 m, 9 m, 12 m, 18 m, 24 m, 30 m or customized |
| Lifting Mechanism | Explosion-proof hoist trolley / explosion-proof winch trolley |
| Crane Type | Double girder overhead crane |
| Traveling Type | Electric traveling |
| Lifting Speed | Single speed, dual speed, or customized |
| Trolley Traveling Speed | Customized according to working condition |
| Crane Traveling Speed | Customized according to working condition |
| Working Duty | Customized according to working frequency and load condition |
| Control Method | Pendant control / wireless remote control / cabin control optional |
| Power Supply | Customized voltage and frequency, such as 220V, 380V, 415V, 440V, 50Hz/60Hz |
| Explosion-Proof Configuration | Customized according to hazardous area requirements |
| Applicable Environment | Hazardous areas with flammable gas, vapor, or combustible dust according to project requirements |
| Protection Level | Customized according to environment and application requirements |
| Safety Device | Overload protection, limit switch, emergency stop, brake, buffer, end stop |
| Installation Site | Indoor workshop / outdoor or semi-outdoor site with suitable protection |
| Certification | ISO, CE, SGS available |
Applications of Explosion-Proof Double Girder Overhead Crane
Explosion-proof double girder overhead cranes are widely used in industrial environments where high lifting capacity, stable performance, accurate positioning, and hazardous area safety configurations are required.
Chemical Plants
Chemical plants often handle flammable gases, vapors, solvents, chemicals, and special production materials. Explosion-proof double girder overhead cranes can be used for lifting reactors, pressure vessels, chemical tanks, pumps, valves, pipelines, molds, equipment parts, and maintenance tools in hazardous production areas.
Petrochemical Facilities
Petrochemical plants require reliable lifting equipment for processing units, storage areas, maintenance workshops, compressor rooms, and pipeline handling areas. Explosion-proof double girder bridge cranes can provide strong lifting capacity and stable operation for equipment installation, overhaul, and material transportation.
Oil and Gas Industry
Oil refineries, gas processing plants, drilling support facilities, fuel handling areas, pump rooms, and compressor stations may require explosion-proof lifting equipment. Double girder explosion-proof overhead cranes are suitable for lifting heavy pumps, motors, compressors, valves, pipe sections, and maintenance equipment.
Paint Workshops and Coating Lines
Paint workshops and coating lines may contain flammable solvents or vapors. Explosion-proof double girder overhead cranes can lift large workpieces, steel structures, frames, fixtures, tanks, and coating equipment, helping improve production efficiency and handling safety.
Pharmaceutical Factories
Some pharmaceutical production processes use alcohol, solvents, or flammable materials. Explosion-proof double girder cranes can support equipment installation, reactor handling, material transfer, production line maintenance, and container lifting.
Fuel Storage and Hazardous Warehouses
Fuel storage facilities and hazardous warehouses need lifting equipment selected according to site conditions and hazardous area requirements. Explosion-proof double girder overhead cranes can be used for lifting containers, pumps, drums, spare parts, and maintenance equipment.
Dust-Prone Industrial Workshops
Combustible dust may exist in industries such as grain processing, coal handling, powder production, metal powder processing, textile manufacturing, plastic powder processing, and other dust-related environments. ZOKECRANE can provide explosion-proof crane solutions according to dust type, area classification, and project safety requirements.
Battery and Energy Storage Industry
Battery production and energy storage equipment manufacturing may involve flammable gases, solvents, or special safety requirements. Explosion-proof double girder overhead cranes can be used for equipment handling, battery module transportation, production line support, and maintenance lifting.
Heavy Equipment Maintenance Areas
For hazardous workshops requiring heavy-duty lifting, explosion-proof double girder overhead cranes can provide better structural stability and higher lifting capacity. They are suitable for equipment installation, machinery maintenance, tooling handling, and large component replacement.
Why Choose ZOKECRANE Explosion-Proof Double Girder Overhead Crane?
Professional Overhead Crane Manufacturer
ZOKECRANE is operated by Henan Zoke Crane Co., Ltd., a professional lifting equipment manufacturer specializing in overhead cranes, gantry cranes, electric hoists, trolley mechanisms, and customized lifting solutions. Our manufacturing base is located in Changyuan, Henan Province, one of China’s major crane production centers.
Advanced Overhead Crane Systems
Based on the requirements of overseas customers, ZOKECRANE has developed advanced overhead crane systems, optimized trolley mechanisms, and reliable wire rope electric hoists. Our focus on technical improvement and product performance allows us to provide efficient and practical lifting solutions for different industrial applications.
Customized Heavy-Duty Explosion-Proof Crane Solutions
ZOKECRANE can customize explosion-proof double girder overhead cranes according to lifting capacity, span, lifting height, working duty, trolley type, speed, power supply, control method, hazardous area classification, gas group, dust type, temperature class, protection level, installation condition, and local project requirements.
Reliable Trolley and Lifting Mechanism
For double girder overhead cranes, the trolley system is one of the key components. ZOKECRANE provides optimized hoist trolley and winch trolley solutions to meet different lifting capacity, working frequency, and hazardous environment requirements.
Strict Quality Control and Certification Support
ZOKECRANE has established a comprehensive quality management system and obtained ISO, CE, and SGS certifications. We continuously improve product structure, manufacturing processes, welding quality, machining precision, assembly standards, electrical configuration, and inspection procedures.
International Export Experience
ZOKECRANE products have been supplied to customers in Russia, Uzbekistan, the Philippines, Bangladesh, Australia, Qatar, Tanzania, Singapore, Saudi Arabia, Brazil, Nigeria, and many other countries and regions. We understand overseas project requirements for drawings, documentation, packaging, shipping, customs clearance support, and after-sales service.
Complete Technical Support
ZOKECRANE can provide technical consultation, crane drawings, wheel load data, layout drawings, installation instructions, operation manuals, maintenance manuals, wiring diagrams, inspection records, test reports, spare parts lists, and remote technical support for overseas customers.
Frequently Asked Questions About Explosion-Proof Double Girder Overhead Crane
1. What is an explosion-proof double girder overhead crane?
An explosion-proof double girder overhead crane is an overhead lifting device with two main girders, designed for hazardous environments where flammable gases, vapors, combustible dust, or explosive atmospheres may exist. It is usually equipped with an explosion-proof hoist trolley or explosion-proof winch trolley.
2. What is the difference between a single girder and double girder explosion-proof overhead crane?
A single girder crane has one main girder and is usually used for lighter loads, smaller spans, and lower working duty. A double girder crane has two main girders and is more suitable for heavier loads, larger spans, higher lifting heights, better hook approach, and more demanding working conditions.
3. What is the difference between an explosion-proof overhead crane and a standard overhead crane?
A standard overhead crane is used in general industrial environments. An explosion-proof overhead crane is specially configured for hazardous areas and can include explosion-proof motors, explosion-proof electrical components, explosion-proof control cabinets, special wiring, safety protection devices, and product configurations selected according to the hazardous area classification.
4. What lifting mechanism is used on an explosion-proof double girder overhead crane?
The lifting mechanism can be an explosion-proof hoist trolley or an explosion-proof winch trolley. For medium-duty applications, a hoist trolley is often used. For higher lifting capacity or heavy-duty applications, a winch trolley is usually recommended.
5. What lifting capacity can ZOKECRANE provide?
Common lifting capacities include 5 ton, 10 ton, 16 ton, 20 ton, 32 ton, and 50 ton. Larger or special lifting capacities can be customized according to customer requirements, workshop structure, working duty, and project conditions.
6. What span can be customized?
Common spans include 10.5 m, 13.5 m, 16.5 m, 19.5 m, 22.5 m, 25.5 m, and 28.5 m. Other spans can be designed according to workshop width, runway beam layout, plant structure, and customer requirements.
7. What lifting height can be customized?
Common lifting heights include 6 m, 9 m, 12 m, 18 m, 24 m, and 30 m. The lifting height can be customized according to workshop height, hook approach, trolley structure, and actual lifting requirements.
8. Can the crane be used in gas and dust hazardous environments?
Yes, but the crane must be selected according to the actual hazardous area conditions, including gas type, dust type, hazardous area classification, gas group, temperature class, protection level, ventilation condition, and local safety requirements.
9. What control methods are available?
Common control methods include pendant control, wireless remote control, and cabin control. For heavy-duty or high-frequency operation, cabin control may be selected. For flexible operation and better visibility, wireless remote control is often recommended.
10. Can ZOKECRANE customize the voltage and frequency?
Yes. ZOKECRANE can customize power supply according to customer requirements and destination country standards, such as 220V, 380V, 415V, 440V, 50Hz or 60Hz. Customers should confirm voltage, phase, and frequency before ordering.
11. Can ZOKECRANE provide a complete runway system?
Yes. ZOKECRANE can provide crane rails, runway beams, rail clips, bolts, conductor systems, cable systems, and related accessories according to project requirements. Customers can provide workshop drawings so that we can check the crane layout and runway system design.
12. What information is needed for quotation?
To recommend a suitable explosion-proof double girder overhead crane, please provide:
- Lifting capacity
- Crane span
- Lifting height
- Crane traveling length
- Working duty or working frequency
- Trolley type requirement
- Lifting speed requirement
- Trolley traveling speed requirement
- Crane traveling speed requirement
- Power supply, voltage, phase, and frequency
- Control method requirement
- Indoor or outdoor use
- Ambient temperature
- Working environment description
- Hazardous area classification
- Gas group or dust type
- Temperature class
- Workshop drawings or layout drawings
- Runway beam and rail information, if available
- Required safety devices
- Destination country or port
- Certification and document requirements
- Packaging and shipping requirements
13. Can ZOKECRANE provide technical drawings?
Yes. ZOKECRANE can provide general arrangement drawings, layout drawings, wheel load data, installation drawings, electrical drawings, wiring diagrams, foundation or runway reference drawings, and other technical documents according to project requirements.
14. Can the crane be used outdoors?
It can be used outdoors or in semi-outdoor areas if suitable outdoor protection is selected. Outdoor use may require rain cover, anti-rust painting, higher protection level, wind protection, drainage consideration, and other special designs. Please provide outdoor site conditions before product selection.
15. Does ZOKECRANE provide installation support?
ZOKECRANE can provide installation manuals, operation manuals, wiring diagrams, technical drawings, and remote technical support. For overseas projects, installation assistance can be discussed according to project requirements, local regulations, and commercial terms.
16. Can ZOKECRANE provide spare parts?
Yes. ZOKECRANE can provide spare parts such as wire ropes, hooks, brakes, motors, reducers, wheels, bearings, limit switches, control components, electrical parts, crane rails, rail clips, buffers, cables, pendant controls, remote controls, hoist parts, trolley parts, and other customized crane accessories.
Export and Logistics FAQ for ZOKECRANE Explosion-Proof Double Girder Overhead Crane
1. Can ZOKECRANE export explosion-proof double girder overhead cranes overseas?
Yes. ZOKECRANE has experience in exporting overhead cranes, gantry cranes, wire rope electric hoists, crane components, and customized lifting equipment to international markets. Our products have been supplied to customers in Russia, Uzbekistan, the Philippines, Bangladesh, Australia, Qatar, Tanzania, Singapore, Saudi Arabia, Brazil, Nigeria, and many other countries and regions.
2. How is the explosion-proof double girder overhead crane packed for export?
Explosion-proof double girder overhead cranes are usually packed according to component size, weight, shipping method, and destination requirements. Main girders and end carriages may be packed with steel frames, waterproof cloth, protective wrapping, and anti-rust protection. Trolleys, motors, reducers, control cabinets, electrical components, pendant controls, spare parts, bolts, and documents are usually packed in wooden cases or suitable protective packaging.
3. Can the crane be shipped by sea?
Yes. Most explosion-proof double girder overhead cranes are shipped by sea freight due to the large size and heavy weight of main girders, end carriages, and trolley components. According to cargo dimensions and destination port conditions, the crane can be shipped by container, flat rack container, open-top container, break bulk vessel, or other suitable sea freight methods.
4. Can the crane be shipped in standard containers?
Some double girder crane components can be shipped in standard containers if the main girder length and package dimensions are suitable. For larger spans, main girders may need to be split into sections for container loading or shipped by flat rack container, open-top container, or break bulk vessel. ZOKECRANE can design a suitable packaging and loading plan according to the crane span, component dimensions, destination port, and shipping cost considerations.
5. Can the main girders be divided for container transportation?
Yes. For long-span double girder overhead cranes, ZOKECRANE can design the main girders in sections to make container transportation easier and reduce shipping difficulty. The sectional girders can be connected on site according to installation drawings and technical requirements.
6. What shipping methods are available?
Common shipping methods include:
- Sea freight
- FCL shipment
- LCL shipment
- Flat rack container shipment
- Open-top container shipment
- Break bulk shipment
- Land transportation
- Railway transportation
- Multimodal transportation
- Air freight for small spare parts or urgent components
The suitable shipping method depends on crane span, component dimensions, gross weight, package volume, destination country, port conditions, delivery time, and agreed trade terms.
7. What export documents can ZOKECRANE provide?
ZOKECRANE can usually provide the following documents:
- Commercial invoice
- Packing list
- Bill of lading
- Certificate of origin, if required
- Product certificate
- Quality inspection report, if required
- CE-related documents, if required
- SGS-related documents, if required
- General arrangement drawing
- Layout drawing
- Installation drawing
- Wheel load data
- Electrical drawing
- Wiring diagram
- Operation manual
- Maintenance manual
- Spare parts list
- Test report, if required
- Packing photos
- Loading photos
The actual document list can be prepared according to customer requirements, destination country customs clearance requirements, trade terms, and project needs.
8. Can ZOKECRANE assist with customs clearance?
ZOKECRANE can provide necessary export documents for customs clearance according to agreed trade terms. Customers or their appointed agents are usually responsible for import customs clearance in the destination country. If special customs documents are required, customers should inform ZOKECRANE before shipment.
9. How should customers check the goods after receiving the crane?
After receiving the explosion-proof double girder overhead crane, customers should check:
- Package condition
- Shipping marks and packing list
- Main girder quantity and condition
- End carriages
- Explosion-proof hoist trolley or winch trolley
- Lifting mechanism
- Trolley traveling mechanism
- Crane traveling mechanism
- Motors and reducers
- Crane wheels
- Control cabinet
- Pendant control or remote control
- Electrical cables and cable accessories
- Limit switches
- Brakes
- Buffers and end stops
- Rails and runway accessories, if included
- Bolts and connecting plates
- Spare parts and tools
- Nameplates and product markings
- Technical documents and manuals
If any damage, shortage, or inconsistency is found, please contact ZOKECRANE promptly with photos, packing list, and shipping documents.
10. Can spare parts be shipped separately?
Yes. Spare parts such as wire ropes, hooks, brakes, motors, reducers, wheels, bearings, limit switches, electrical components, pendant controls, remote controls, cables, buffers, rail clips, bolts, hoist parts, trolley parts, and crane accessories can be shipped separately by courier, air freight, sea freight, or other suitable shipping methods.
11. Can packaging be customized?
Yes. ZOKECRANE can customize packaging according to crane size, component weight, shipping method, customer requirements, destination country requirements, project needs, and cargo protection requirements. Wooden cases, steel frames, waterproof wrapping, anti-rust protection, labels, shipping marks, lifting marks, and special packing instructions can be arranged.
12. How long does production and delivery take?
Production and delivery time depends on lifting capacity, span, lifting height, explosion-proof configuration, trolley type, working duty, power supply, control method, order quantity, customization level, certification requirements, production schedule, shipping route, and destination port. After technical requirements, drawings, commercial terms, and payment details are confirmed, ZOKECRANE can provide a production and delivery plan.