Shipbuilding Gantry Crane
Henan Mine Shipbuilding Gantry Cranes are specifically designed for shipyard dry docks, slipways, and section fabrication areas. Their core features a symmetrical and stable structure combining a “trapezoidal main girder + I-shaped rigid legs + A-shaped flexible legs,” offering exceptional load-bearing capacity and corrosion resistance. Lifting capacities range from 100-450 tons, with spans customizable from 40-97 meters. Maximum lifting height reaches 70 meters, operating at A7-A8 duty cycles. The crane delivers stable performance in complex coastal environments spanning -20°C to 40°C, including salt spray, high winds, and high humidity.
Lifting Weight:
100 t, 200 t, 250 t, 450 t or customized
Span Length
40m - 97 m or customized
Lifting Height
35m - 70 m or customized
Work Class
A7 - A8
Working Temperature Range
-25℃～+40℃
Lifting Speed
0 - 20 m/min
Parameters of Shipbuilding Gantry Cranes Manufactured by Henan Mine Machinery
China's premier crane supplier, driving high-quality development in the crane industry for 24 years
| Parameter | Specification | Remarks |
| Lifting Capacity | 100 t, 200 t, 250 t, 450 t | Customizable for double trolley/multi-hook combined lifting |
| Span | 40 – 97 m | Rail-to-rail center distance; Customizable |
| Max Lifting Height | 35 – 70 m | Adapt to different dock/berth depth requirements |
| Working Class | A7 – A8 | Suitable for continuous heavy-duty ship block lifting |
| Working Temperature Range | -20℃ ~ 40℃ | Adapt to coastal high-humidity and salt-fog environment |
| Lifting Speed | 0.5 – 10 m/min （Main Hoist）; 1 – 20 m/min （Auxiliary Hoist） | Frequency conversion speed regulation, stepless adjustment |
| Traveling Speed | 5 – 30 m/min （Trolley Travel）; 10 – 40 m/min （Long Travel） | Dual-motor drive with skew correction device |
| Synchronization Precision | ≤ 3 mm | For double trolley/multi-hook coordinated lifting |
| Wind Resistance Capacity） | 20 m/s （Working）; 55 m/s （Non-working） | Four-fold wind protection devices, comply with national standards |
| Power Source | 3-phase AC 380V 50Hz（400V/415V customizable） | Power supply via cable reel or busbar |
| Control Mode | Cab control, remote operation, wireless remote control | Remote control range ≥ 100m; Support multi-machine coordination |
| Anti-corrosion Grade | Salt spray test ≥ 1000 hours | Triple anti-corrosion process |
Henan Mine Shipbuilding Gantry Crane Product Introduction
Henan Mine Shipbuilding Gantry Cranes are specifically designed for shipyard dry docks, slipways, and section fabrication areas. Their core features a symmetrical and stable structure combining a “trapezoidal main girder + I-shaped rigid legs + A-shaped flexible legs,” offering exceptional load-bearing capacity and corrosion resistance. Lifting capacities range from 100-450 tons, with spans customizable from 40-97 meters. Maximum lifting height reaches 70 meters, operating at A7-A8 duty cycles. The crane delivers stable performance in complex coastal environments spanning -20°C to 40°C, including salt spray, high winds, and high humidity.
Equipped with dual upper/lower trolleys or multi-hook coordination systems, paired with customized sectional lifting gear, it enables aerial rotation, precise positioning, and joining operations for ship sections. This enhances operational efficiency by over 35% compared to traditional equipment, making it widely applicable for core processes like sectional construction and final assembly of large vessels and offshore engineering products.
Core Features: Precisely Solving Core Lifting Challenges in Shipbuilding
- Multi-hook synchronized lifting: Utilizes PLC + variable frequency speed control system to achieve millimeter-level synchronization between upper/lower trolleys or multiple hooks (synchronization accuracy ≤3mm). Enables smooth handling of extra-long/oversized ship sections, preventing deformation from uneven stress distribution. Equipped with rope alignment devices to prevent wire rope derailment, ensuring stable lifting.
- Precision In-Air Rotation: Supports 150-ton section rotation operations. Dual-trolley coordination precisely controls rotation speed and angle, ensuring smooth, impact-free maneuvers that prevent collision damage. Custom lifting gear and rotation solutions are available based on section weight and geometry.
- Extensive Coverage: Customizable spans from 40-97m with a maximum lifting height of 70m. Combined with longitudinal gantry movement and transverse trolley travel, it comprehensively covers shipyard and slipway work areas, eliminating frequent equipment repositioning and enhancing operational flexibility.
Henan Mine Machinery’s Shipbuilding Gantry Crane
Robust Wind Resistance and Corrosion Protection for Coastal Environments
- Multi-layered wind protection: Equipped with wind clamps, top rail clamps, wind mooring lines, and anchoring devices for quadruple safeguards. Withstands 55 m/s (Category 16) typhoons during non-operation and 20 m/s (Category 8) winds during operation. Features a wind speed monitor with logging capability for real-time monitoring, triggering automatic alerts and locking wind protection systems upon exceeding thresholds.
- Comprehensive Corrosion Protection: Tailored for coastal salt spray environments, employs a triple anti-corrosion process—“shot blasting for rust removal + epoxy primer + fluorocarbon topcoat.” The coating exhibits strong adhesion and excellent salt spray corrosion resistance, achieving over 1000 hours in salt spray testing.
- Structural Wind Resistance Optimization: The main beam features a streamlined design to minimize wind resistance. Outriggers are securely fastened to the foundation with high-strength bolts, complemented by track-end stops to further enhance wind stability, ensuring safety during coastal outdoor operations.
Henan Mine Machinery’s Shipbuilding Gantry Crane
Intelligent Safety Monitoring for Hazard-Free Heavy-Load Operations
- Comprehensive Safety Monitoring: Equipped with an intelligent safety monitoring system that continuously tracks critical parameters including load weight, lifting height, operational position, wind speed, and weld stress. Data is transmitted in real-time to the control center, triggering immediate alarms and emergency shutdowns upon anomalies.
- Multi-Level Safety Interlocks: The hoisting mechanism features a dual-brake design that activates instantly upon power loss, eliminating hook slippage risks. Includes an electronic anti-collision system for the trolley, lifting height limiters, and travel limiters to prevent collisions and overtravel accidents. Dedicated safety interlocks for aerial flipping operations prevent segment drops caused by misoperation.
- Emergency backup design: Equipped with emergency power and manual operation devices. In case of sudden power failure or malfunction, the emergency system ensures smooth segment placement, minimizing accident losses.
Henan Mine Machinery’s Shipbuilding Gantry Crane
Core Technical Advantages: Henan Mine's Exclusive Competitive Edge
Heavy-load Technology Expertise: With experience in R&D and manufacturing of 450t ultra-long-span shipbuilding gantry cranes, we successfully delivered a benchmark project featuring a 97m span and 70m lifting height. Our patented core synchronous control technology achieves ≤3mm synchronization accuracy, significantly outperforming industry averages.
- Strong Coastal Adaptability: Tailored anti-corrosion and wind-resistant solutions for coastal environments with salt spray and high winds.
- Outstanding Customization Capabilities: Flexible adaptation of equipment parameters and structural designs based on shipbuilding scale and section dimensions. Provides integrated “equipment + lifting gear + operation plan” solutions for vessels ranging from 10,000-ton commercial ships to specialized craft.
- End-to-End Service Assurance: Comprehensive support from site surveys and design to manufacturing, installation, commissioning, operator training, and after-sales maintenance. Assistance with special equipment inspection procedures. Over 150 global service stations cover major coastal industrial cities, with dedicated teams providing 24/7 response.
Henan Mine Machinery’s Shipbuilding Gantry Crane
What Can Henan Mine Machinery's Shipbuilding Gantry Cranes Offer You?
| Value Category | Specific Benefits | Description |
| Shipbuilding Efficiency Improvement | 35%+ higher lifting efficiency; 20% shorter shipbuilding cycle | High-precision synchronization and anti-sway control reduce positioning time; Modular installation shortens downtime; |
| Heavy-Load Operation Safety Guarantee | 99% reduction in safety accident risks; Zero ship block damage accidents | Intelligent safety monitoring system and multiple safety interlocks comprehensively monitor operating status; Four-fold wind protection and double brakes prevent accidents |
| Coastal Environment Adaptability | 10-year+ anti-corrosion service life; No typhoon-related downtime | Triple anti-corrosion process resists salt fog corrosion; Four-fold wind protection devices comply with typhoon protection standards |
| Operation Cost Reduction | 40% lower maintenance cost; 30% lower energy consumption | High-reliability components and modular design reduce failure rate; High-efficiency motor and frequency conversion technology save energy |
| Customized Adaptability | Adapt to various ship block sizes | Customizable lifting capacity, span and lifting height; Special spreaders and operation schemes for irregular ship blocks, meeting the needs of commercial ships, special ships and offshore engineering products |
| Long-Term Operation Reliability | 15-year+ service life; Stable operation under continuous heavy load | High-strength steel structure and strict welding quality control ensure structural reliability; |
Henan Mine's Quality and Service Assurance
- Stringent Quality Control: Each unit undergoes 1.25x static load testing, 1.1x dynamic load testing, synchronous precision testing, wind-resistant device performance testing, and safety monitoring system integration testing prior to shipment. Critical welds undergo 100% ultrasonic flaw detection, accompanied by comprehensive inspection reports and special equipment certification;
- End-to-End Customized Service: Free on-site surveys of shipyards and slipways to develop tailored solutions based on vessel construction scale and section parameters; comprehensive support including installation, commissioning, and operator training;
- Nationwide Coastal After-Sales Network: Dedicated service stations established at major coastal shipbuilding bases, staffed by 150+ professional engineers with specialized shipyard gantry crane maintenance experience, ensuring 24-hour response;
- Warranty Commitment: – 1-year warranty for the entire machine – 3-year warranty for core components (main girder, hoisting mechanism, traveling mechanism, safety monitoring system) – 5-year warranty for core safety devices (brakes, wind protection devices, synchronous control system) – Free repair or replacement for non-human-induced damage during warranty period
Henan Mine Machinery’s Shipbuilding Gantry Crane
Parameters of Shipbuilding Gantry Cranes Manufactured by Henan Mine Machinery
| Technical Specification | ||||||
| Lifting capacity | t | 2×50+100 | 2×75+100 | 2×100+160 | 2×150+200 | 2×400+400 |
| Two trolleys lifting | 150 | 200 | 300 | 500 | 1000 | |
| Section reverse lifting | 100 | 150 | 200 | 300 | 800 | |
| Work classifications | A5 | |||||
| Span | m | 50 | 70 | 38.5 | 175 | 185 |
| Lifting height(m) | H1 | 35 | 50 | 28 | 65/10 | 76/13 |
| H2 | 35 | 50 | 28 | 65/10 | 76/13 | |
| Lifting speed(m/min) | Full load | 0.5~5 | 0.5~5 | 0.4~4 | 0.5~5 | 0.32~3.2 |
| No load | 1~10 | 1~10 | 0.8~8 | 1~10 | 0.64~6.4 | |
| Crane travelling(m/min) | Full load | 2.5~25 | 2~20 | 3~30 | 1~25 | 3~30 |
| No load | 3.5~35 | 3~30 | 4.5~45 | 1~30 | 3~40 | |
| Trolley travelling(m/min) | Full load | 2.5~25 | 2.5~25 | 3~30 | 1~25 | 3~30 |
| No load | 2.5~35 | 2.5~35 | 3~45 | 1~30 | 3~40 | |
| Wheel load | KN | 260 | 320 | 330 | 700 | 750 |
| Total power | KW | 400 | 530 | 650 | 1550 | 1500 |
| Power | 3-phase AC 50Hz 10KV | |||||
Advantage display
China's premier crane supplier, driving high-quality development in the crane industry for 24 years
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
Details of Henan Mine Machinery's Rail-mounted Container Gantry Crane
China's premier crane supplier, driving high-quality development in the crane industry for 24 years
Application Scenarios of Shipbuilding Gantry Cranes Manufactured by Henan Mine Machinery
China's premier crane supplier, driving high-quality development in the crane industry for 24 years
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Hull Section Assembly WorkshopThis represents the most critical application scenario for shipyard gantry cranes, handling the lifting, flipping, and welding of hull sections. Shipbuilding requires processing steel plates into hull sections weighing tens to hundreds of tons, such as decks, bulkheads, and sides. Cranes must precisely lift these sections to assembly stations, using flipping attachments to achieve smooth 360° rotation of sections, meeting the high-precision requirements of shipbuilding operations.
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Dock / Slipway Final Assembly AreaUsed for final assembly of main sections and pre-launch preparations. Within the dry dock, cranes must lift multiple large sections (e.g., bow section, stern section, engine room section) to designated positions to complete overall hull assembly. Once the hull structure is formed, cranes also lift heavy marine equipment such as main engines, generators, and boilers for installation in the engine room, as well as hoist superstructure modules onto the deck.
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Outfitting DockUndertakes heavy equipment hoisting tasks for outfitting operations after ship launching. This includes lifting marine cranes, lifeboats, radar antennas, containers, and other equipment for deck installation, as well as auxiliary hoisting for supplying fuel, fresh water, and other materials.
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Dry Dock Ship Overhaul WorkshopDesigned for in-dock overhauls and modifications, its primary function is lifting heavy components like propulsion and power systems. Examples include removing and transporting main engines to repair shops, replacing underwater components like propellers and rudders, or segmental lifting during hull lengthening or widening modifications.
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Offshore Engineering Vessel Modification BaseUsed for upgrading offshore engineering vessels (e.g., drilling support vessels, wind turbine installation vessels). Lifts and installs heavy modules like new drilling equipment or wind turbine installation booms onto the hull, accommodating diverse modification requirements.
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Offshore Oil & Gas Platform Manufacturing WorkshopUndertakes module hoisting for fixed offshore platforms and Floating Production Storage and Offloading (FPSO) units. Lifts super-heavy components like platform deck modules, oil/gas processing equipment, and accommodation modules (individual modules weighing up to thousands of tons) to complete overall platform assembly.
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Offshore Wind Power Equipment Manufacturing BaseUsed for constructing wind turbine installation vessels and offshore wind turbine foundations (e.g., monopiles, jackets). Lifts heavy components like crane booms and pile legs for installation vessels, or hoists jacket sections to welding stations.
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Deep-sea Exploration Equipment Construction WorkshopDesigned for manufacturing deep-sea detectors and carrier vessels for underwater robots. Handles precision heavy components like detector pressure chambers and deep-sea manipulators. Features dust-free operation design to prevent contamination during handling, ensuring the sealing integrity of deep-sea equipment.
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Specialized Engineering Vessel Construction WorkshopUsed for manufacturing icebreakers, crane vessels, salvage ships, and other specialized engineering vessels. Handles specialized equipment such as icebreaker bow modules, crane vessel main boom frames, and salvage ship winch systems, accommodating the unique construction requirements of specialized vessels. Henan Mining can customize specialized lifting gear based on vessel characteristics, such as curved lifting frames for icebreaker bows or balanced lifting frames for crane ship booms, enhancing compatibility with equipment and components.
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Military Vessel Construction and Maintenance BaseUsed for sectional assembly, weapon system installation, and maintenance of military vessels. Handles components like hull sections, shipborne radars, and missile launchers. Customizable low-noise, anti-magnetic configurations prevent interference with shipborne electronic equipment.
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 Factory is a premier provider of integrated crane and material handling solutions, covering R&D, design, manufacturing, sales, and service for end-to-end support.
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
Become our distributor
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Become our agent
Full range of lifting equipment, international standard quality and ample production capacity, ensuring worry-free agency support.
Professional cross-border after-sales team + global parts warehouses, 24-hour response, full-cycle service to help you effortlessly expand your market.
Generous agency policies + regional exclusive protection, guaranteeing your profits and worry-free cooperation.
We sincerely invite global partners with resources to join hands, jointly develop the global crane market, and achieve mutual benefit and win-win outcomes!
What Can Henan Mine Machinery's Shipbuilding Gantry Cranes Offer You?
China's premier crane supplier, driving high-quality development in the crane industry for 24 years
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We need to lift 400-ton ship sections and perform aerial rotation. Can the equipment's synchronized control precision meet these requirements?Professional Answer: Absolutely. Our equipment fully meets the requirements for lifting and aerial flipping of 400-ton sections. Synchronized control precision and safety are guaranteed—there is no risk of section deformation or falling! Previously, clients expressed concerns about stability during flipping. We conducted on-site simulation tests to validate the solution, completely alleviating those concerns. You can rest assured.
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Can the anti-corrosion performance be guaranteed for long-term operation in coastal salt fog environments?Professional Answer: Absolutely. Our triple anti-corrosion process ensures over 10 years of effective protection. Under normal use, no full anti-corrosion treatment is needed for 5-8 years! Regular maintenance per our recommendations will maintain stable anti-corrosion performance long-term.
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With the equipment's large span and heavy weight, will the installation and commissioning period be lengthy?Professional Answer: The installation and commissioning period is fully controllable and will not impact the shipyard's normal production! Previously, we installed a 300-ton shipyard gantry crane for a Dalian shipyard. By coordinating with the client's production schedule for off-peak operations, we completed the entire installation and commissioning in just 35 days without disrupting the shipyard's normal production.
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With multi-motor drive systems, could operational deviation occur? How is straight-line travel of the main girder ensured?Professional Answer: No significant operational deviation occurs. We implement multiple safeguards to guarantee straight-line travel of the main girder! When a client previously expressed concerns about operational deviation in long-span equipment, we conducted on-site testing to verify stable straight-line travel performance, fully meeting the precision requirements for shipyard operations.
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Can the equipment's safety monitoring system integrate with our shipyard's production management system? Can it enable data sharing and remote monitoring?Professional Answer: Full integration is possible, enabling both data sharing and remote monitoring! Our safety monitoring system includes open communication interfaces like TCP/IP and Profinet, allowing seamless connection to your shipyard's production management system. Our technical team will pre-analyze your production management system's communication protocols and data formats to develop customized interface adaptations.
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How is structural safety ensured after prolonged heavy-load operation?Professional Answer: Core component lifespans are fully guaranteed. Key components like the main girder and hoisting mechanism can operate reliably for over 15 years under normal conditions. Structural safety during long-term heavy-load operation is completely assured! As long as regular inspections and maintenance are performed according to our recommendations, structural safety during prolonged heavy-load operation is fully guaranteed.
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Is operating this large-span heavy-duty shipbuilding gantry crane difficult? How long does training take to become proficient?Professional Answer: Operational difficulty is minimal. Operators can achieve independent operation after 5-7 days of specialized training! Our training team will tailor sessions to your specific work scenarios, covering five dimensions: basic operations, synchronized controls, aerial slewing, safety protocols, and basic troubleshooting—ensuring operators master all functions.
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We wish to conduct an on-site inspection of this shipbuilding gantry crane in operation. Does your company have any reference sites available for viewing?Professional Answer: On-site inspections are certainly possible! We will arrange for senior technical experts and account managers to accompany you throughout the visit. They will demonstrate the equipment's operational procedures in real-world conditions and provide detailed answers to your questions regarding operational parameters, maintenance costs, and suitable application scenarios.
Operating Manual for Shipbuilding Gantry Cranes Manufactured by Henan Mine Machinery
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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30 Years of Lifting R&D, Following Strict European Standards, Intelligent
Empowerment
for Heavy Loads, Providing Global Safe & Excellent Solutions
The project was delivered on time and landed safely
China's premier crane supplier, driving high-quality development in the crane industry for 24 years
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