Gantry Crane

I. Product Image Description

(Suggested to be paired with high-definition real-scene images or 3D renderings, clearly showcasing the following key elements: 1. The gantry structure (including the main beam, support legs, and lower crossbeam), with dimensions of span and leg height marked to vividly illustrate the "gantry-style" open-air operational form; 2. The lifting trolley (equipped with lifting and traveling mechanisms), demonstrating its lateral movement along the main beam's rail system; 3. The trolley traveling mechanism (featuring wheel assemblies and rails), highlighting the gantry's longitudinal movement along the ground track; 4. The lifting attachment (such as a hook, grab bucket, or electromagnetic lifter, adapted according to the specific model), accompanied by an illustration of heavy-load lifting scenarios (e.g., containers, steel materials, bulk cargo); 5. The operation control system (comprising a ground-based remote control unit and an operator’s panel in the cab, clearly labeled with emergency stop buttons and parameter display screens); 6. Safety devices (including load limiters, wind-resistant rail clamps, and buffers), with critical safety components precisely indicated; 7. An outdoor operational backdrop (such as a freight yard, port terminal, or construction site) to emphasize the equipment's application in open-air environments.)

II. Product Name

1. General Gantry Crane (5-50t, suitable for cargo handling in factory yards, building material markets, and small to medium-sized logistics parks)
2. Container Gantry Crane (20-100t, equipped with container-specific lifting attachments, suitable for handling box-type cargo at port terminals and container yards)
3. Overhead Gantry Crane for Loading and Unloading (50-200t, Large Span, High Lifting Height, Suitable for Bulk Material Handling—such as Ore and Coal—at Large-Scale Steel Plants and Power Plants)
4. Explosion-proof Gantry Crane (5-80t, Explosion-proof Rating Ex d IIB T4 Ga/Ex ia IIB T4 Ga, Designed for Lifting and Handling Operations in Flammable and Explosive Environments Such as Chemical Parks and Oil & Gas Fields)
5. Rubber-tired gantry crane (10–60 tons, with rubber-tired bogie travel system; no fixed rails required, suitable for temporary storage yards, construction sites, and other scenarios without fixed rail systems).
6. Customized gantry cranes (customizable in span, leg height, and lifting attachment types to suit specialized sites such as those spanning railways or highways, as well as handling special heavy loads like wind turbine towers and large-scale equipment).

 

III. Product Introduction

The gantry crane (also known as a "gantry hoist") is a core piece of heavy-duty lifting equipment designed for outdoor, open-air environments. It features a gate-like structure that spans above the work area, enabling it to move horizontally along the main beam via a trolley and longitudinally along ground tracks (or on tires) alongside the gate frame. This design facilitates the three-dimensional transfer of heavy objects in vast, open outdoor spaces. Compared to bridge cranes, which rely on factory track systems, gantry cranes offer three key advantages: they are independent of factory structures, perfectly suited for outdoor operations, and highly mobile. They can cover spans ranging from 10 to 50 meters in open-air areas and support single-unit loads up to 5–200 tons. As a result, they are ideal for applications in ports, cargo yards, construction sites, steel plants, and other outdoor settings, effectively addressing the challenges of lifting large, heavy items across wide, open spaces without fixed building infrastructure.

This product series is centered around the core features of "outdoor durability, efficient adaptability, and safety & stability." It features a high-strength structural design that is wind-resistant, rainproof, and corrosion-resistant, making it suitable for handling complex outdoor weather conditions. Customized lifting attachments (such as container slings and grab buckets) are tailored for various scenarios, boosting operational efficiency by 30%–50% compared to conventional equipment. Additionally, the series is equipped with multiple safety mechanisms—including wind-resistant systems, limit switches, and explosion-proof devices—while also supporting intelligent monitoring systems, ensuring reliable performance in demanding outdoor environments with high load requirements and stringent safety standards.

IV. Product Details

(1) Core Parameters

 

Product Model	Rated Lifting Capacity	Range of span	Lifting height	Lifting speed	Operating Speed (Large Vehicle / Small Vehicle)	Work Level	Applicable Ambient Temperature	Core Adaptation Scenarios
General Gantry Crane	5-50 tons	10-30 meters	6-18 months	0.5-10 m/min	8-25 m/min / 5-15 m/min	A3-A5	-25°C to 45°C	Factory yards, building material markets, and small to medium-sized logistics parks
Container Gantry Crane	20-100 tons	18-40 months	12-30 meters	0.3-8 m/min	10-30 m/min / 4-12 m/min	A6-A7	-20°C to 50°C	Port terminals and container yards
Overhead Gantry Crane for Loading and Unloading	50-200 tons	25-50 meters	15-40 meters	0.2–6 m/min	5-20 m/min / 3-10 m/min	A7-A8	-30°C to 55°C	Large steel plants and power plants (bulk material handling)
Explosion-Proof Gantry Crane	5-80 tons	10-25 meters	6-22 meters	0.4-9 m/min	8-28 m/min / 5-14 m/min	A4-A6	-20°C to 40°C	Chemical industrial parks, oil and gas fields (explosion-proof scenarios)
Rubber-tired gantry crane	10-60 tons	12-35 meters	8-25 meters	0.5-9 m/min	5-20 m/min (tire drive) / 5-15 m/min	A5-A6	-25°C to 45°C	Temporary freight yard, construction site (without fixed tracks)
Customized Gantry Crane	5-250 tons	8-60 meters	5-50 meters	Optimize on demand	Optimize on demand	A3-A8	-35°C to 60°C	Cross-railway / highway sites, wind turbine tower lifting operations, and large-scale equipment transportation

(II) Core Configuration and Features

1.

Main Structural System

• Portal Frame Structure: Constructed from high-strength Q355B or Q460 steel, the main beam features a box-type welded structure (for large-span models, a truss-type main beam is used to reduce weight). The supporting legs are made of rectangular or I-shaped steel structures, with the lower crossbeam connected to the legs via high-strength bolts. The surface undergoes shot blasting for rust removal (achieving Sa2.5 grade), followed by fluorocarbon or anti-corrosion coating treatment, ensuring excellent resistance to salt spray and ultraviolet radiation, with an outdoor service life of ≥15 years. Maximum deflection ≤ L/1000 (where L represents the span length), guaranteeing no deformation even under long-term heavy-duty outdoor operations.
• Operating System: For the rail-mounted model, the traveling tracks are made of heavy-duty P50/P60 steel rails securely anchored to a concrete foundation, with track stoppers installed on both sides. For the tire-mounted model, specialized solid tires designed for construction machinery (with a load-bearing capacity ≥ 3 times the rated weight) are used, paired with a hydraulic steering system that enables a minimum turning radius of ≤8 meters and supports in-place steering maneuvers, making it suitable for scenarios without fixed tracks. The trolley's running tracks are embedded atop the main beam, constructed from wear-resistant alloy steel (with a surface hardness of HRC50–55), significantly reducing frictional wear and enhancing operational efficiency.
• Lifting Gear Adaptation: - Universal models come standard with a hook (made of 20MnSiV steel, with a safety factor ≥ 5 times). - Container models are equipped with a telescopic container lifting attachment (compatible with both 20-foot and 40-foot containers, featuring automatic alignment and a gripping time of ≤ 30 seconds). - Quay crane models are fitted with a four-rope grab bucket (suitable for handling bulk materials such as coal and ore, with a bucket capacity ranging from 5 to 20 m³). - Customized models can be equipped with specialized fixtures (e.g., wind turbine tower clamps or large equipment lifting beams) to meet the specific requirements for lifting heavy and complex objects.

2.

Drive and Control System

• Lifting Mechanism: Employs a combination of "variable-frequency motor + hardened gear reducer + drum + electromagnetic brake." The outdoor model features a motor with an IP55 protection rating. For metallurgical and loading/unloading bridge models, high-temperature-resistant motors are used (withstanding temperatures up to 150°C). In explosion-proof models, explosion-proof motors are installed. Lifting speed is adjustable from 0.2 to 10 m/min, enabling fast operation under light loads and slower speeds for heavy-load tasks, thereby enhancing operational efficiency. The brake system consists of a dual-shoe electromagnetic brake that engages within 0.3 seconds upon power failure, ensuring safe suspension of heavy loads. Additionally, the drum surface undergoes wear-resistant treatment (hardness ranging from HRC45 to HRC50) to prevent wire rope abrasion.
• Operating Mechanisms: Large-car traveling mechanism (driving the gantry movement): For rail-based systems, a "frequency converter motor + gearbox + wheel assembly" is employed, with forged steel wheels featuring quenched wheel surfaces. The traveling speed ranges from 5 to 30 m/min. For tire-based systems, a "hydraulic motor + axle assembly" is utilized, enabling stepless speed adjustment and ensuring compatibility with complex terrains (slope ≤ 3°). Small-car traveling mechanism (driving the lifting trolley movement): This mechanism employs a "frequency converter motor + gear-rack transmission," achieving a traveling speed of 3 to 15 m/min. It delivers positioning accuracy within ±5 mm, effectively meeting the requirements for container alignment as well as precise loading and unloading of bulk materials.
• Control System: Offers three operation modes—wireless remote control (operating range ≤150m, with display screen, supporting emergency stop, jog mode, and linked operation, ideal for outdoor mobile tasks); ground control console (equipped with a rainproof cover, suitable for fixed workstation operations); and cab control (cab features a closed, insulated structure equipped with air conditioning, windproof glass, and high-definition cameras, perfect for large-span and high-frequency operations). The core of the control system is a PLC programmable controller, which supports self-diagnosis functions such as motor overload and track deviation, as well as operational data storage. Additionally, it can seamlessly integrate with IoT platforms to enable remote monitoring.

3.

Security Protection System

• Load and Travel Protection: Standard equipment includes a load limiter (automatic power-off alarm at 10% overload), as well as an overload warning system (visual and audible alert at 90% overload). Dual limit switches are installed at both ends of the trolley/traveling carriage tracks (mechanical + electronic limits), while the lifting mechanism features upper and lower limit switches to prevent overtravel. For tire-mounted models, a slope sensor is integrated; if the incline exceeds 3°, the system automatically locks to prevent unintended movement or rollback.
• Wind and Slip Protection: The rail-mounted models are equipped as standard with wind-resistant rail clamps (which automatically clamp the rail upon power failure) and wind-resistant tension cables (ideal for coastal areas prone to strong winds). When wind speeds exceed 15 m/s (Level 7 wind), the wind protection system is automatically activated. For the tire-mounted models, a parking brake system is installed (combining hydraulic and mechanical braking for dual-layered protection), ensuring automatic wheel locking when the vehicle is stationary.
• Emergency and Environmental Protection: The equipment body, cab, and ground control console are all equipped with emergency stop buttons that cut off all power supply upon activation. Outdoor models feature electrical cabinets fitted with heating and dehumidification systems—automatic heating activates at low temperatures (≤-10°C), while automatic dehumidification engages when humidity levels exceed 85%, safeguarding electrical components from moisture-related damage or freezing. For explosion-proof models, anti-static grounding and spark suppressors are installed to eliminate safety risks in flammable and explosive environments.
• Status Monitoring: The cab and remote control display real-time information including lifting capacity, lifting height, travel speed, wind speed, and equipment temperature. Certain models are equipped with video monitoring systems (360° panoramic cameras) and wind speed sensors, enabling operators to continuously observe the lifting environment and wind conditions, thereby minimizing blind spots and mitigating operational risks associated with high winds.

4.

Accessibility Features

• Energy-Efficient and Durable Design: The lifting mechanism is equipped with an energy recovery system (when the load descends, the motor generates electricity, which is fed back into the power grid, achieving energy savings of 25%-35%). The tire-mounted models feature an oil-efficient hydraulic system to minimize fuel consumption. Additionally, all exposed components—such as wheels and hooks—are treated with wear-resistant and corrosion-proof coatings, significantly reducing the frequency of outdoor maintenance.
• Environmental Adaptation Upgrade: Models designed for coastal regions can be upgraded with stainless steel components (such as bolts and lifting devices) and salt-spray-resistant coatings to withstand seawater corrosion. For models intended for cold northern regions, a low-temperature starting system—including motor preheating and hydraulic oil heating—is included, ensuring reliable operation even at temperatures as low as -35°C. Additionally, models for high-temperature environments are equipped with an advanced forced cooling system featuring fans for both the motor and gearbox, enabling stable performance under ambient conditions up to 55°C.
• Intelligent Operations and Maintenance Features: Optionally equipped with an IoT module, the system uploads equipment operating data (including current, voltage, and fault codes) to a cloud platform via 4G/5G connectivity. This enables administrators to remotely monitor device status and receive real-time fault alerts. Additionally, the system automatically records maintenance cycles—such as lubricant replacement and tire wear detection—and sends timely maintenance reminders when these cycles are due. The solution also supports remote diagnostics, significantly reducing on-site operation and maintenance costs.

(III) Applicable Scenarios

• Port and Logistics: Container gantry cranes are used for container loading, unloading, and stacking operations at port terminals and container yards. Equipped with automatic alignment features, they significantly enhance container handling efficiency. General-purpose gantry cranes are designed for transporting piece goods (such as steel materials and equipment) within logistics parks, making them ideal for open outdoor cargo yards.
• Industrial and Energy Sector: Loading and unloading gantry cranes are employed in large-scale steel plants and power plants for handling bulk materials (such as ores and coal), utilizing grab buckets to seamlessly transfer materials between ships, vehicles, and storage bins. Additionally, specialized gantry cranes designed specifically for the metallurgical industry are utilized for outdoor handling of steel billets and structural profiles in steel mills, featuring high-temperature-resistant designs tailored to withstand extreme heat environments.
• Engineering & Infrastructure: Tire-mounted gantry cranes are designed for lifting equipment such as tower crane components and precast structures at construction sites and temporary storage yards. These cranes do not require fixed tracks, offering flexible adaptation to dynamic operational areas on-site. Additionally, customized railway- or highway-crossing gantry cranes are specifically engineered for transferring goods across transportation routes, ensuring minimal disruption to traffic flow.
• Chemical Industry and Special Scenarios: Explosion-proof gantry cranes are used for lifting flammable and explosive materials (such as chemical storage tanks and oil & gas equipment) in chemical parks and oil/gas fields, with explosion-proof designs that eliminate safety risks. In the wind power industry, customized gantry cranes are employed for outdoor transportation and installation of wind turbine towers and blades, featuring large spans and high lifting heights to meet the specific requirements of wind power sites.

(IV) After-sales Service

• Preliminary Services: Provide free on-site surveys (including job site dimensions, ground load-bearing capacity, and power/hydraulic system configurations). Based on outdoor environmental conditions (wind speed, temperature, and corrosion levels) and lifting requirements, we will design an optimized solution. We will deliver detailed structural drawings, comprehensive parameter lists, and cost estimates, while assisting clients in planning and obtaining approvals for foundational construction tasks such as track foundations and tire parking areas.
• Installation and Acceptance: Installation will be performed on-site by a team holding "Crane Machinery Installation Qualification," including track laying and foundation calibration for rail-mounted models, as well as hydraulic system debugging for tire-mounted models. After installation, the equipment will undergo no-load trial runs (more than 100 cycles) and load tests (1.25 times the static load and 1.1 times the dynamic load). The customer will then be invited to participate in acceptance testing together with the local special equipment inspection authority. Upon successful completion of these inspections, a Usage Registration Certificate will be issued.
• Warranty and Operations & Maintenance: The entire machine is covered by a 1- to 2-year warranty (with a 3-year warranty for core components such as the motor, reducer, and tires). During the warranty period, free repairs and replacement of faulty components will be provided. Quarterly inspections are conducted (with a focus on outdoor equipment, including checks of wind-resistant devices and anti-corrosion coatings), along with annual comprehensive maintenance services that include lubricant replacement and structural non-destructive testing. Additionally, equipment operation and maintenance records are maintained, documenting each maintenance activity in detail.
• Training and Support: Free training is provided for operators and maintenance personnel, covering outdoor operation guidelines, wind-resistant emergency procedures, and routine maintenance. Upon successful completion of the assessment, an operator's certificate will be issued. Additionally, a 24-hour after-sales hotline is available. For outdoor equipment malfunctions—such as tire damage or failures in wind-resistant devices—our response times are as follows: within 2 hours for urban areas, within 4 hours for suburban regions, and within 8 hours for remote areas. This ensures uninterrupted outdoor operations.

The product system covers high-speed elevators, small machine room elevators, non machine room elevators, passenger elevators, sightseeing elevators, villa elevators, cargo elevators, utility elevators, car elevators, and escalators/escalators. The product has been widely used in large shopping malls, commercial buildings, high-end hotels and other places.