Double-girder gantry crane
Henan Mine's MG Double-Girder Gantry Crane features an integrated box-type double-girder + rigid outrigger structure. With lifting capacities ranging from 5 to 500 tons, customizable spans from 8 to 40 meters, and lifting heights from 6 to 30 meters, it operates reliably in complex outdoor environments including temperatures from -20°C to 40°C, high dust levels, and strong winds. It delivers core characteristics including heavy-load stability, precise positioning, flexible operation, and easy maintenance. Compared to similar products, it offers over 30% higher load capacity and a 40% extended service life, establishing itself as the benchmark equipment in heavy-duty general lifting applications.
Lifting Weight:
5t - 500 t or customized
Span Length
8m- 40 m or customized
Lifting Height
6m - 30 m or customized
Work Class
A3 - A8
Working Temperature Range
-25℃～+40℃
Parameters of the MG Double-Girder Gantry Crane Manufactured by Henan Mine
China's premier crane supplier, driving the crane industry forward for 24 years
| Parameter | Specification | Remarks |
| Lifting Capacity | 5 – 500 t | Main/auxiliary hook optional; Customizable |
| Span | 8 – 40 m | Customized based on site size |
| Lifting Height | 6 – 30 m | Adjustable according to on-site needs |
| Working Temperature Range | -20℃ ~ 40℃ | Suitable for indoor and outdoor heavy-duty working conditions |
| Lifting Speed | 0.1 – 10 m/min | Stepless speed regulation; Main/auxiliary hook with different speeds |
| Traveling Speed | 5 – 40 m/min（Long Travel）; 3 – 20 m/min（Trolley Travel） | Frequency conversion speed regulation |
| Control Mode | Cab control, wireless remote control, or both | Wireless remote control range ≥ 100m |
| Protection Class | IP55（Electrical Components） | Dustproof, waterproof and moisture-proof |
| Motor Type | YE4 ultra-high efficiency energy-saving motor | Energy-saving rate ≥ 30% |
| Delivery Cycle | 30 – 45days（Standard Model）; 45-60 days （Customized Model） | Supported by heavy-duty equipment dedicated production line |
Henan Mine MG Double-Girder Gantry Crane Product Introduction
Henan Mine's MG double girder gantry crane is a widely adopted large-scale loading machinery for open-air material handling. It offers advantages such as high lifting capacity, extensive operational space, efficient yard area utilization, minimal infrastructure investment, and low operating costs. Consequently, it is extensively used in industrial and mining operations, transportation, logistics, and construction projects.
High-strength double-girder structure ensures stable, deformation-free heavy-duty operation
- Structural optimization: Box-type double-girder design precisely optimized via finite element analysis. Main girder camber strictly complies with industry standards, maintaining zero permanent deformation during long-term operation across 5-500t rated loads. Impact load resistance reaches 1.5 times rated capacity, preserving exceptional structural stability even in large-span applications.
- Material and Process Assurance: Main girders, end beams, and outriggers utilize Q355B high-strength steel with tensile strength exceeding 500 MPa. Critical welds undergo ultrasonic flaw detection to ensure welding quality and eliminate structural risks.
- Reinforced Outrigger Structure: Features A-type or U-type rigid outriggers with variable-section box-type construction—wider at the top and narrower at the bottom—effectively distributing vertical and horizontal loads. U-type outriggers provide expanded working space, facilitating passage of large materials beneath.
Henan Mine’s MG double girder gantry crane
Precision Transmission System for Efficient, Smooth Operation
- Dual Motor Drive Design: The trolley travel mechanism employs dual motors and dual reducers for independent drive, delivering balanced power output and smooth operation without rail chattering. Combined with variable frequency speed control technology, it achieves stepless speed adjustment from 0-40m/min, ensuring smooth starts and stops while preventing swaying of heavy loads.
- Optimized Hoisting Mechanism: Equipped with a high-precision winch hoist, optional primary/secondary hook configuration allows the primary hook for heavy-duty lifting and the secondary hook for light materials or auxiliary positioning. Hoisting speed ranges from 0.1-10 m/min with positioning accuracy of ±3 mm, meeting precision lifting requirements.
- Low-noise Energy-saving Design: Core transmission components utilize hardened gears and high-precision bearings, with operational noise ≤75dB. Equipped with YE4 ultra-high-efficiency motors, energy consumption is reduced by over 30% compared to standard motors, significantly lowering long-term electricity costs during heavy-duty operations.
Henan Mine’s MG double girder gantry crane
Comprehensive Safety Protection for Hazard-Free Heavy-Duty Operations
- Multi-level Safety Interlocks: Features dual overload protection, triple lifting height limits, trolley/girder travel limits, and anti-collision sensors. Immediate shutdown and alarm upon any parameter anomaly. Dual brakes on the hoisting mechanism ensure reliable load stopping, eliminating hook slippage risks.
- Enhanced Outdoor Protection: Outdoor models come standard with wind-resistant rail clamps, wind anchoring devices, and anemometers. Equipment automatically locks when wind speeds exceed 15m/s, preventing displacement during high winds.
- Comprehensive emergency safeguards: Standard backup power supply enables controlled lowering of loads during sudden power outages. Emergency stop buttons are strategically placed throughout the system—in the operator’s cabin, on ground-level remote controls, and at the load site—for rapid response to emergencies.
Henan Mine’s MG double girder gantry crane
Core Technology Advantages: Henan Mine's Exclusive Competitive Edge
- Accumulated Heavy-Load Core Technology: Years of dedicated R&D in double-girder gantry cranes, holding multiple heavy-load structural design patents. Mature technology for 500t-class ultra-large capacity models, successfully deployed in multiple national key projects with battle-tested performance;
- Full-Chain Customization Capabilities: Providing end-to-end tailored services from site surveys and solution design to manufacturing and installation/commissioning, precisely meeting diverse heavy-duty scenarios such as port container handling, heavy equipment assembly, and large steel structure lifting.
- Significant Smart Upgrade Potential: Equipment features reserved open communication interfaces for retrofitting intelligent monitoring systems and unmanned control systems, enabling automation and smart upgrades for heavy-duty operations to align with enterprise digital transformation needs.
- Rapid Delivery & Installation: Dedicated heavy-duty crane production workshops equipped with large CNC machining equipment and professional welding teams ensure standardized production processes and delivery timelines. Modular design combined with expert installation teams enables swift equipment assembly and commissioning for early production.
Henan Mine’s MG double girder gantry crane
What Can the MG Double-Girder Gantry Crane Manufactured by Henan Mining Offer You?
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Value Category Specific Benefits Description Heavy-Duty Operation Efficiency Improvement 35%+ higher hoisting efficiency; 30% shorter single operation cycle Dual-motor drive and frequency conversion speed regulation realize stable and precise operation; Main/auxiliary hook collaborative work improves operation efficiency; Large span design covers a wide working area, reducing equipment movement frequency Operational Safety Enhancement 95% lower safety accident rate; Zero risk of heavy-load slipping and equipment displacement Multi-layer safety interlock system and dual brake design eliminate potential hazards; Windproof and anchoring devices ensure safe operation in outdoor windy environments; Strict quality inspection ensures structural reliability Long-Term Operation Cost Reduction 30%+ energy saving; 40% lower maintenance cost; Significant reduction in downtime loss YE4 ultra-high efficiency motor reduces energy consumption; High-strength structure and high-quality components reduce failure rate; Efficient after-sales service shortens downtime, reducing annual downtime loss by more than 500,000 RMB Long-Term Reliability 20+ years of service life; 8+ years of anti-corrosion coating effectiveness Q355B high-strength steel and optimized structure ensure long service life; Anti-corrosion and wear-resistant design and IP55 protection level adapt to complex outdoor environments Production Continuity Assurance Annual downtime ≤10 hours; Fault response time ≤1 hour; On-site maintenance ≤3 hours for common faults Special after-sales service stations in heavy industry clusters; 24-hour emergency response team; Preventive maintenance plan to eliminate potential faults in advance Scenario Adaptability Adapt to 5-500t heavy-load hoisting; Suitable for various indoor and outdoor heavy-duty scenarios Customizable parameters and optional special components adapt to port, factory, construction and other scenarios; Multiple control modes meet the needs of different operation teams
Quality and Service Assurance: The Choice for Large Enterprises
- Stringent Quality Control: Each unit undergoes multiple specialized inspections including static load testing, dynamic load testing, and safety device interlock testing before shipment. Critical welds undergo 100% ultrasonic flaw detection, accompanied by comprehensive inspection reports and safety certification documents;
- End-to-End On-Site Service: Free site surveys and heavy-load lifting assessments, with customized solutions tailored to production processes. Comprehensive service covering “manufacturing-installation/commissioning-operator training-smart system integration.” Post-installation trial operation monitoring ensures seamless operations.
- Nationwide heavy-duty dedicated after-sales network: Specialized service stations established in major industrial hubs and port cities, staffed by over 200 professional engineers—all with maintenance experience on 500-ton double-girder gantry cranes—offering 24-hour response.
- Warranty commitment: 1-year warranty for entire equipment, 3-year warranty for core heavy-duty components, 5-year warranty for core safety devices. Free repair or replacement for non-human-induced damage during warranty period.
Advantage display
Product Advantages Overview
Large-Tonnage Bearing
Rated lifting capacity ranges from 5T to 500T, and larger tonnages can be
customized for special needs. Adopting high-manganese steel main beam and
reinforced
Intelligent Precision Control
quipped with a PLC intelligent control system, supporting millimeter-level
positioning and automatic loading/unloading. Lifting and running speeds can be
flexibly adjusted, and
Multiple Safety Protections
Integrates multiple safety mechanisms such as overload protection, limit
protection,
anti-fall protection and emergency braking, equipped with high-definition
monitoring
and fault
Longer Service Life
Core components are made of high-quality materials such as wear-resistant alloy
and corrosion-resistant steel, reinforced by heat treatment process. The
electrical system
Detailed Drawing of YZD Metallurgical Bridge Crane Manufactured by Henan Mine
China's premier crane supplier, driving the crane industry forward for 24 years
Henan Mine MG Double-Girder Gantry Crane Application Scenarios
Henan Mine's MG double-girder gantry cranes are core equipment specifically designed for heavy-duty open-pit material handling. Featuring a box-type double-girder welded structure, their key advantages include ultra-high load capacity and suitability for continuous high-intensity operations. They are equipped with PLC intelligent control systems and multiple safety protection devices
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Coastal/Inland Port Bulk TerminalsSuited for loading/unloading and transshipment of bulk commodities like iron ore, coal, and grain. For instance, Henan Mine's custom-built 1000-ton MG double-girder gantry crane for a China Railway terminal handles heavy equipment loading/unloading and bulk cargo transshipment for large cargo vessels.
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Container TerminalsDesigned for handling and stacking 20-foot and 40-foot containers, particularly suited for small-to-medium container terminals or inland container transfer stations
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Wind Power/Nuclear Power Equipment Manufacturing WorkshopsUsed for hoisting and assembling heavy components such as wind turbine nacelles, hubs, towers, and nuclear reactor pressure vessels.
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Shipbuilding and RepairyardsUndertakes core tasks including hull section hoisting, engine assembly installation, and marine equipment maintenance. Henan Mine's MG double-girder gantry crane achieves a lifting height of 20 meters, enabling 300-t hull sections to be raised to 15 m for welding alignment.
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Heavy Machine Tool/Construction Equipment Manufacturing WorkshopsUsed for lifting and assembling oversized heavy components like machine tool beds, excavator booms, and loader chassis. Equipped with overload limiters that automatically cut power when load exceeds 10% capacity, ensuring safety during precision equipment assembly.
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Bridge/Railway Construction SitesSuitable for lifting and installing heavy components like precast box girders, steel box girders, and bridge piers. The MG model's dual-girder structure offers high rigidity, with customizable mobile track designs to meet flexible on-site operational needs.
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Urban Rail Transit ConstructionUsed for lifting and transferring subway tunnel segments and shield machine components. At shield machine construction sites, it lifts 300-ton shield machine bodies to tunnel portals. With wireless remote control operation, operators can precisely manage lifting processes from safe zones. The equipment features dust-proof sealing to withstand high-dust construction environments, ensuring continuous construction efficiency.
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Steel Mill Open Stockyards/Hot Rolling MillsUsed for transferring and stacking heavy materials like steel billets, structural steel, and scrap steel, as well as lifting high-temperature steel billets in hot rolling mills. The MG model for Henan Mine features high-temperature insulation protection, with lifting mechanisms equipped with heat-resistant steel wire ropes. This reduces load requirements on track foundations and adapts to the high-intensity continuous operation rhythm of steel mills.
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Large Building Materials/Precast Component PlantsUsed for lifting heavy materials such as cement clinker, large concrete precast components, and stone blocks. Designed to meet the high-load operational demands of the building materials industry.
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Nuclear/Hydroelectric Power Construction SitesUsed for hoisting super-heavy equipment like nuclear reactor pressure vessels and hydroelectric turbine generators. Customized high-precision positioning models with radiation-proof sealed designs meet nuclear power's specialized operational environment requirements.
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Aerospace Auxiliary Manufacturing WorkshopsUsed for lifting and assembling heavy components like aircraft fuselage frames and rocket boosters. Customized cleanroom models feature anti-static spray-coated surfaces to meet workshop cleanliness standards.
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Model Selection RecommendationsSelect models ranging from 5 to 1000 tons based on material weight, allowing a 20% safety margin. Customize specialized protective configurations. Henan Mine offers on-site surveys to precisely match model parameters with site dimensions, operational environments, and lifting requirements. Optional smart operation and maintenance modules enable real-time operational monitoring and remote fault diagnosis.
Crane Operation Demonstration
China's premier crane supplier, driving the crane industry forward for 24 years
How to Choose the Best Crane Manufacturer in China
Henan Mine Crane Co., Ltd. is a professional manufacturer and service provider of cranes and material handling products. Integrating R&D, design, manufacturing, sales, and service, we deliver comprehensive solutions and full-lifecycle support to our customers.
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1Clarify Your Crane NeedsThoroughly understand your lifting requirements (load details, frequency, and workspace environment) before approaching crane manufacturers.
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2Determine Crane Service ClassCalculate the required crane service class based on your operational intensity to ensure optimal performance and longevity.
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3Explore Crane Supplier Custom Features:Investigate available customization options and special features to enhance safety, efficiency, and precision for your specific application.
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4Assess Crane Factory Engineering CapabilityEvaluate the manufacturer's engineering strength to ensure they can design a suitable solution tailored to your needs.
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5Verify Quality & Compliance of Crane CompanyCheck the crane manufacturer's manufacturing quality, certifications, and compliance with international standards and your local safety regulations.
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6Ensure Support & ReferencesConfirm the manufacturer provides reliable after-sales support and has a proven track record with positive references in your industry or region.
Why We Are More Trustworthy
Henan Mine Crane Co., Ltd. is a professional manufacturer and service provider of cranes and material handling products. Integrating R&D, design, manufacturing, sales, and service, we deliver comprehensive solutions and full-lifecycle support to our customers.
Experienced company
Established in 2002, Henan Mine Crane Factory is a high-tech crane enterprise. Using advanced global design and manufacturing tech, we craft top-quality single/double-beam cranes and electric hoists.
Professional team & equipment
Our 1.62 million ㎡ factory has 3,500+ staff, 200 senior engineers, and 428+ global sales/service points. With 2,000+ processing machines handling 20+ processes, we ensure excellence.
Productive capacity
The annual output of cranes is over 80,000 units. The company produces and sells more than 11000 double beam and gantry cranes annually, More than 73000 single beam cranes, and More than 100000 sets (sets) of single and double beam electric hoists and accessories.
Customized design services
We know the right crane is key. Our engineers partner with clients to design and build cranes tailored to specific needs, ensuring optimal performance.
Why Our Cranes Earn Customers' Trust
Henan Mine Crane Co., Ltd. has a strong technical team with over 10 top experts and 200+ mid-to-senior engineers. They've obtained over 700 national patents and provincial-level tech achievements, with over 670 authorized patents. Henan Mine Crane Factory led/participated in over 100 standard formulations/revisions, won the China Standard Innovation Contribution Award, and is a key member of multiple lifting machinery standardization committees. Dr. Xu Lei serves as Deputy Leader of the ISO/TC96 Domestic Technical Counterpart Expert Working Group.
The services we provide
China's premier crane supplier, driving the crane industry forward for 24 years
Free customization scheme
The professional engineer team communicates in depth to understand needs, and provides
one-stop customized solutions including 3D model design, technical parameter calculation
Regular Maintenance Reminder
Establish customer equipment files, and regularly send maintenance reminders based on
equipment usage time and operation intensity. Provide detailed maintenance manuals and
video tutorials
Technical support consultation
Provide 7×12-hour online technical consultation service. Senior consultants answer
questions in real time regarding product selection, parameter matching, installation
specifications
Free customization scheme
The professional engineer team communicates in depth to understand needs, and provides
one-stop customized solutions including 3D model design, technical parameter calculation
Our Patents and Certifications
China's premier crane supplier, driving the crane industry forward for 24 years
Customer Testimonials & Top Choices
China's premier crane supplier, driving the crane industry forward for 24 years
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China's Premier Crane Supplier, Empowering the Lifting Industry for 24 Years
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MGC Slurry Gate Crane
The MGC Slurry-Discharging Gantry Crane manufactured by Henan Mine Machinery is a specialized gantry lifting device designed for subway construction scenarios. Also known as a slurry-discharging gantry crane or slurry-discharging portal crane, it is primarily used for lifting, flipping, and dumping tunnel spoil, as well as transporting tunnel segments. Its typical lifting capacity ranges from 45 to 50 tons, with a maximum lifting height of 100 meters, and it operates at a heavy-duty working level.
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MEN General-Purpose Gantry Crane
Henan Mine Machinery's general-purpose gantry cranes are currently among the most widely used lifting equipment. Supported by outriggers on both sides running along ground rails, they enable intermittent, repetitive loading, unloading, and material/equipment handling in general outdoor environments. These cranes feature vertical lifting capabilities along with longitudinal and lateral movement functions. Lifting attachments include hooks, grabs, electromagnetic chucks, and other configurations to accommodate diverse material handling requirements. Depending on operational needs, outriggers may be fitted on both sides or only one side to facilitate transferring loads from the center of the span to the outer edges. Alternatively, cranes may be designed without outriggers. Working classes range from A3 to A8.
MC Electromagnetic Gantry Crane
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This equipment enables efficient, automated loading, unloading, transfer, and stacking of various ferromagnetic ferrous materials, achieving a continuous operational cycle of “pick-up, transport, and release.”
MGY Metallurgical Gantry Crane
Henan Mine Machinery's MGY metallurgical double-girder gantry crane is currently one of the most widely used lifting machines. Supported by side legs on ground rails, it operates intermittently and repetitively in specialized work environments, featuring vertical lifting and both longitudinal and lateral movement capabilities. The metallurgical double-girder gantry crane is equipped with a gantry hook lifting device for handling molten steel ladles or maintenance slag ladles.
Key structural components such as the main girders and outriggers are protected with thermal insulation treatment, enabling them to withstand high-temperature radiation and ensuring long-term stable operation in high-temperature workshop environments.
MZ Grab Gantry Crane
Henan Mine Machinery's MZ Grab Double-Girder Gantry Crane is currently one of the most widely used lifting machines. Supported by outriggers on both sides, it operates along ground rails and can perform intermittent, repetitive tasks in specialized work environments. It features vertical lifting capabilities along with longitudinal and lateral movement functions. The Grab Double-Girder Gantry Crane is a heavy-duty lifting apparatus specifically designed for bulk material handling. Its defining characteristics are the combination of a double-girder gantry structure and a grab device.
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Your Top Questions About Henan Mine's MG Double-Girder Gantry Cranes and Professional Answers
China's premier crane supplier, driving the crane industry forward for 24 years
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As a port terminal requiring 24/7 continuous container handling, how stable is the MG double-girder gantry crane under heavy loads?Professional Solution: Absolutely no need for concern! Our MG double-girder gantry crane is specifically engineered for ports' 24/7 heavy-duty operations, with its load stability and reliability proven through extensive real-world testing! We will also optimize structural parameters and lubrication systems based on your port's container weights and lifting frequency to ensure long-term stable operation.
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Our worksite is located by the sea with severe salt spray corrosion. Will the equipment suffer rust damage during long-term use?Professional Answer: We have already addressed the issue of coastal salt spray corrosion. The equipment features comprehensive anti-salt spray reinforcement, ensuring no rust damage occurs during long-term use! For your coastal environment, we'll further increase the thickness of the anti-salt spray coating and enhance sealing protection levels, guaranteeing a service life exceeding 20 years in salt spray conditions.
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We need to lift 500-ton large equipment components. Can your MG double-girder gantry crane guarantee safety?Professional Answer: Safety during 500-ton heavy-load lifting is our core design priority and is absolutely guaranteed. We eliminate hook slippage risks at the source! Additionally, our technical team will conduct on-site surveys before lifting to plan customized lifting paths. Professional signalers and operators will monitor the entire process to ensure flawless execution.
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The equipment is large and structurally complex. Will installation and commissioning take a long time? Can the schedule be accelerated?Professional Answer: We fully understand your schedule requirements. The MG double-girder gantry crane features a modular design, reducing installation and commissioning time by 30% compared to industry averages—perfectly aligning with your project timeline! For particularly tight schedules, we can deploy multiple teams to work concurrently, further compressing the timeline.
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Our operators have only worked with single-girder cranes before. Is the MG double-girder gantry crane complicated to operate?Professional Answer: Operation is not complex at all. Operators can quickly master it after 3-5 days of specialized training! Our MG double-girder gantry crane features a “user-friendly operation design,” with core operational logic similar to single-girder cranes, making it easy to understand.
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Compared to other double-girder gantry cranes, the MG gantry crane equipment is relatively expensive. How is the cost-effectiveness?Professional Answer: While our equipment may seem slightly more expensive upfront, its cost-effectiveness is unmatched. Typically, the investment pays off within 3-5 years. By minimizing downtime losses—with a low equipment failure rate and annual downtime under 10 hours—it saves approximately 800,000 yuan in operational costs each year. The long-term benefits are highly significant.
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We want to integrate the equipment with our factory's smart warehousing system. Is this achievable with your equipment?Professional Answer: Absolutely! This can be achieved without disrupting existing production. Our MG double-girder gantry crane's intelligent control system features open communication interfaces like TCP/IP and Profinet, enabling seamless integration with mainstream smart warehousing systems for automated scheduling.
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We'd like to observe the equipment in actual operation. Can you arrange visits to partner ports or heavy-duty factories?Professional Answer: Absolutely! On-site visits are the best way to understand equipment performance firsthand. We fully support and will coordinate this process. Based on your location and operational needs, I'll recommend nearby demonstration sites. I'll accompany you throughout the visit to provide detailed explanations. You set the schedule and itinerary—we'll handle all arrangements in advance to ensure you see with confidence and buy with peace of mind.
Operating Manual for MG Double-Girder Gantry Crane Manufactured by Henan Mine
China's premier crane manufacturer, driving high-quality development in the crane industry for 24 years
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Each crane must display a rated load capacity plate in a conspicuous location.
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No personnel are permitted on the girder during operation, nor may the hook be used to transport persons
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Operation is prohibited without a valid operator's license or under the influence of alcohol.
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Operators must maintain full concentration during operation; talking, smoking, or engaging in unrelated activities is strictly forbidden.
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Keep the crane clean and tidy; do not store equipment, tools, flammable materials, explosives, or hazardous substances haphazardly.
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Do not overload the crane.
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When operating along obstacle-free paths, the hook, lifting device, or bottom surface of the load must remain at least 2 meters above ground level. When crossing obstacles, the load must clear the obstacle by at least 0.5 meters
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For loads under 50% of rated capacity, both lifting mechanisms may operate simultaneously. For loads exceeding 50% of rated capacity, only one mechanism may operate.
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.For bridge cranes equipped with main and auxiliary hooks, do not simultaneously raise or lower both hooks (except under special circumstances).
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Welding or hammering on suspended loads, or working beneath suspended loads, is prohibited (except when properly supported).
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Inspection or maintenance work may only be performed after power has been disconnected and a “Do Not Operate” sign is displayed on the power switch. If live work is unavoidable, implement safety measures and assign dedicated supervision.
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Do not throw objects from the vehicle indiscriminately.
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Regularly inspect limit switches and interlock protection devices.
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Do not use limit switch impact as a stopping method.
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Do not lift or lower loads when hoist brakes malfunction.
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Do not operate the hoist above personnel or equipment.
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When welding any part of the crane, use a dedicated ground wire; do not use the crane body as a ground.
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When the hook is at its lowest position, ensure at least two full turns of safety rope remain on the drum.
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Cranes must not collide with each other; using one crane to push another into operation is strictly prohibited.
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When lifting heavy objects, molten metal, explosives, or hazardous materials, first slowly raise the load 100–200 mm off the ground to test brake reliability.
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Maintenance and inspection lighting must operate at voltages below 36V.
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All electrical equipment enclosures on bridge cranes must be grounded. If trolley rails are not welded to the main girder, grounding measures must be implemented. Grounding conductors may use galvanized flat iron with a cross-sectional area exceeding 75mm², bare copper wire of 10mm², or galvanized round steel exceeding 30mm². The operator's cab or crane body shall have more than two grounding points. The grounding resistance from any point on the crane to the power supply neutral point shall be less than 4Ω.
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Henan Mine's Single-Girder Gantry Crane
Meets core lifting equipment requirements for small-to-medium factories, logistics parks, construction sites, and similar applications. This crane offers cost-effective operation, user-friendly controls, strong adaptability, and low maintenance costs.
Improve efficiency
Break through operational bottlenecks and improve overall project progress efficiency
Avoiding risks
Build a solid safety line and avoid potential risks of high-risk operations
Delivery
Adapt to diverse working conditions and ensure stable project implementation and delivery