Outdoor Place Use 20 Ton Gantry Crane

The 20 Ton Gantry Crane designed for outdoor applications is a robust, high-capacity lifting solution ideal for handling heavy loads in open work environments such as construction sites, shipyards, rail yards, and material storage areas. Built to endure harsh weather conditions, this crane offers reliable performance, exceptional stability, and efficient load handling for large-scale lifting operations.

Equipped with a 20-ton lifting capacity, this gantry crane is suitable for moving heavy machinery, steel components, containers, and other bulky materials. Its adjustable span and height options, along with customizable rail systems, provide flexibility for diverse site requirements.

Key features typically include:

Durable steel structure with anti-corrosion coating for outdoor durability

Electric or hydraulic hoisting system for smooth, powerful lifting

Motorized or manual trolley for precise load positioning

Weather-resistant electrical components and covers

Safety systems such as overload protection, emergency stop, and limit switches

Easy installation and disassembly, allowing for site relocation if needed

This gantry crane is an essential tool for industries that demand high-efficiency, large-capacity outdoor lifting solutions, ensuring both productivity and safety in challenging environments.

Core Components PLC, Engine, Bearing, Gearbox, Motor, Pressure vessel, Gear, Pump

Place of Origin Henan, China

Warranty 1 Year

Weight (KG) 30000 kg

Application Precast yard, construction site, warehouse, etc.

Product name 40 ton straddle carrier rubber tired single girder gantry cranes

Crane Type A Type, Single Girder, Double Girder Straddle Carrier

Lifting mechanism Customer Requirements

Control Method Cabin Control+Remote Control

Lifting Capacity 5~1200 Ton

Multiple Steering Modes Go straight, transverse traveling, carousel steering, etc.

Install On-site and online

Motor Famous brand

Work Duty A3~A5

Main Girder (Bridge Beam)

Heavy-duty steel structure designed to support the weight of the hoist and load

Often a box-type or truss-type beam depending on span and load conditions

Treated with anti-corrosion coatings for outdoor durability

Legs (Support Columns)

Connect the main girder to the ground or rails

Usually made of structural steel and designed to withstand wind loads

May include ladders or maintenance platforms

Hoist Trolley

Houses the hoisting mechanism and moves horizontally along the main girder

Can be either electric or hydraulic

Includes motor, gearbox, drum, wire rope or chain, and hook block

Lifting Mechanism

Electric wire rope hoist or chain hoist designed to lift 20 tons

Comes with a motor, brake, and gearbox for lifting and lowering loads smoothly

3.End carriage

An end carriage is a structural and mechanical assembly located at the ends of the gantry crane's girder(s). It houses wheels, drive mechanisms, and other components essential for stability and, in some cases, movement along a track.

Components of an End Carriage:Wheel Assemblies:Fixed wheels: Support the structure's weight and maintain stability.Driving wheels: Powered wheels for motion along rails (if applicable).Materials: Made from durable materials like forged steel for heavy-duty applications.

2. Drive Mechanism (optional for stationary setups):Includes motors, gearboxes, and coupling systems.Used for cranes that have limited or controlled horizontal movement along rails.

3. Bearings:Allow smooth and frictionless wheel rotation.Designed for high loads and long service life,Frame:A robust, rigid structure that connects the wheels and supports the girder.Typically constructed from high-strength steel.

4. Rail Clamps (Optional):Clamps or locking mechanisms to secure the crane in place.Essential for safety in outdoor installations or windy conditions.Buffers:Absorb impact and reduce vibration at the ends of travel

4.Crane travelling mechanism

Key Components of the Travelling Mechanism Drive System:Electric motors: Provide the power for movement.Gearboxes: Control the speed and torque of the motors.Wheels and Rails:Wheels are mounted at the base of the gantry legs or on a trolley. They are typically made of high-strength steel to handle heavy loads.Rails are fixed on the ground or a beam, guiding the wheels for smooth travel.

Braking System:Electromagnetic or mechanical brakes ensure stability by preventing unwanted movement when stationary.Controls:Operated manually (via a control panel or pendant) or through wireless remote control systems.

Travelling Mechanism Types,Gantry Movement:The entire gantry crane structure moves along a fixed rail system.Trolley Movement:A trolley equipped with a hoist travels horizontally along a beam (cross-travel) while the gantry remains stationary.

Safety Mechanisms:Anti-collision devices: Prevent accidental impacts between cranes or structures.Limit switches: Ensure safe stopping at end points.

Maintenance Tips,Regularly inspect wheels and rails for wear and alignment.Lubricate moving parts to ensure smooth operation.Check the electrical system for faults or damage.

5.Trolley travelling mechanism

1. Trolley Frame:A robust steel structure designed to support the hoist and handle heavy loads. It connects all the components of the trolley mechanism.Wheels:The trolley is equipped with wheels (usually four or more), which run along the flange of the gantry beam or a dedicated track.Wheels are typically made of high-strength steel and can be plain, flanged, or grooved, depending on the rail or beam design.

2. Electric Motor: Powers the trolley's movement. Motors are often equipped with variable frequency drives (VFD) for smooth acceleration and deceleration.Gearbox: Converts the motor's rotational speed into the desired torque and speed for moving the trolley.Couplings and Shafts: Transmit power from the motor to the wheels.

3.Operated via:Pendant Control: A wired controller suspended from the crane.Remote Control: Wireless operation using radio frequency.

Cabin Control: For larger cranes, an operator's cabin may be provided.

4.Braking System:Includes mechanical or electromagnetic brakes to stop and hold the trolley in place.Brakes engage automatically when power is cut or when the trolley is stationary.

Crane wheel

Key Features of Crane Wheels;Material:Typically made from high-strength steel or alloyed materials to withstand heavy loads and resist wear.Common materials include carbon steel, forged steel, or heat-treated steel to enhance durability.

Design:Flat Wheels: Used for flat-topped rails, allowing lateral movement flexibility.Flanged Wheels: Feature a flange on one side to prevent derailment and maintain alignment with the rail.Double-Flanged Wheels: Provide additional safety by keeping the wheel securely on the track, often used in heavy-duty applications.Tread Profile: Designed to distribute the load evenly and reduce wear.

Tread Profile: Designed to distribute the load evenly and reduce wear.Dimensions:Vary depending on the size and capacity of the crane.Key parameters include wheel diameter, tread width, and flange thickness.Mounting:Mounted on axles or shafts, either directly or via bearings.Bearings reduce friction and enable smooth rotation.

Crane Hook

Key Features of Crane Hooks Material:Typically made from high-strength materials such as forged steel or alloy steel.Designed to withstand heavy loads, impact forces, and harsh working conditions

Design:Single Hook: A simple, straight design used for general lifting tasks.Double Hook: Features two prongs, used for balancing heavier loads and reducing stress on each hook.Rotating Hook: Allows 360-degree rotation for precise load positioning.Safety Latch: Most crane hooks include a latch to prevent the load from slipping off the hook.

Load Capacity:Varies widely depending on the crane's design and application.Clearly marked on the hook for operator safety.

Hook Shapes:C-Hook: Used for handling coils and cylindrical loads.Eye Hook: Features a circular eye for secure attachment to the hoist or chain.Clevis Hook: Includes a U-shaped clevis and pin for quick attachment.

Motor

Key Features of Crane Motors Motor Types:Squirrel Cage Induction Motors:Commonly used for their durability and low maintenance.Suitable for applications requiring constant speed.Slip Ring Induction Motors:Used where variable speed is needed, such as in hoisting mechanisms.Servo Motors:Provide precise control, often used in advanced cranes.Brake Motors:Include built-in braking systems for immediate stopping.

Power Rating:Ranges from a few kilowatts for small cranes to hundreds of kilowatts for heavy-duty industrial cranes.The rating depends on the crane's lifting capacity and operational requirements.

Design:Duty Cycle: Designed for intermittent or continuous operation, depending on the application.Insulation: High-grade insulation to withstand harsh industrial environments.Cooling: Equipped with cooling systems (fan-cooled or liquid-cooled) to prevent overheating.

Control Features:Motors often work with Variable Frequency Drives (VFD) or motor controllers for:Speed control.Smooth acceleration and deceleration.Reduced power consumption.

Sound and light alarm system & limit switch

Key Features of the Alarm System,Audible Alarm (Sound)Emits a loud, distinct sound, such as a siren or buzzer, to alert workers.Typically activated during crane operation, load movement, or in emergencies.Sound level: Adjusted to ensure audibility over background noise.Visual Alarm (Light);High-intensity flashing or rotating lights (commonly red or yellow) provide a visual warning.Helps alert personnel in noisy environments or when hearing protection is used.

Control Integration;Activated automatically during specific operations (e.g., hoisting, traveling) or manually by the operator.Often integrated with other safety systems like anti-collision sensors.Functions of the Alarm System Movement Alerts: Warn workers when the crane or load is in motion.Collision Prevention: Signal potential obstructions or proximity to other equipment.

Emergency Indication: Highlight faults, overload conditions, or other emergencies.Maintenance Tips Regularly test sound levels and light visibility.Replace worn-out bulbs, LED, or speakers.Ensure proper wiring and connection to the control system.

Safety Devices

Safety Devices in Stationary Gantry Cranes,Safety devices in stationary gantry cranes are essential for protecting workers, equipment, and materials during operation. They help prevent accidents, ensure smooth crane operations, and comply with workplace safety regulations.

used in stationary gantry cranes: Overload Protection Device Function: Prevents the crane from lifting loads exceeding its rated capacity.

Mechanism:Equipped with load cells or strain gauges to measure the load weight.Automatically interrupts the hoist operation if the load exceeds the limit.Importance: Protects the crane structure and prevents accidents caused by overloading.

Anti-Collision Devices,Function: Detects proximity to other cranes, structures, or obstacles.Mechanism:Uses sensors like ultrasonic, infrared, or radar to detect objects.Triggers alarms or stops crane movement to prevent collisions.Importance: Reduces the risk of accidents and equipment damage in multi-crane environments.

Emergency Stop System,Function: Allows operators to immediately halt all crane operations in emergencies.Mechanism:Operated via buttons located on the control panel, remote control, or at accessible positions.Disconnects power to critical systems.Importance: Provides quick response capability during emergencies, minimizing risks.

Anti-Sway System,Function: Minimizes load swaying during lifting and movement.Mechanism:Employs advanced control systems to counteract pendulum effects.Uses sensors and software to adjust motor speeds dynamically.Importance: Enhances precision and safety during load handling.

11.Control Mode

1. Types of Control Modes for Stationary Gantry Cranes,Pendant Control;Description: The operator uses a wired or wireless pendant control unit to operate the crane from a safe distance.Components: A handheld device with buttons or joysticks for controlling movement and functions.

2. Cabin Control;Description: The operator is stationed in a control cabin that is mounted on the crane or nearby the crane's operating path.Components: Equipped with buttons, joysticks, pedals, and sometimes touchscreens for controlling crane functions.

3. Remote Control;Description: Uses a wireless remote control device, which can be handheld or worn on the operator's body.Components: A compact device with buttons or joysticks, similar to a pendant control but without a cable.

4.Automatic Control (Automated Control);Description: The crane operates according to pre-programmed commands and sequences without operator intervention.Components: Includes sensors, programmable logic controllers (PLC), and control software that manage the crane's functions.

Sketch

Main technical

Advantages of a 20 Ton Outdoor Gantry Crane

High Lifting Capacity

Easily handles loads up to 20 tons, making it ideal for heavy-duty tasks in industries like construction, shipbuilding, and logistics.

Versatile Outdoor Use

Specifically designed to withstand outdoor environments, with weatherproof components and corrosion-resistant coatings for long-term durability.

Cost-Effective Installation

Unlike overhead cranes, gantry cranes don't require building reinforcement or runway beams-saving time and money on structural modifications.

Mobility and Flexibility

Can be rail-mounted or rubber-tired for easy relocation across worksites

Adjustable span and height options suit different operational needs

Easy Assembly and Disassembly

Modular design allows for quick setup and breakdown-ideal for temporary or changing job sites.

Improved Safety Features

Equipped with overload protection, limit switches, emergency stop buttons, and wind-proof locking devices to enhance safety in outdoor conditions.

Efficient Material Handling

Speeds up lifting and transportation processes, reducing labor costs and improving operational efficiency.

Remote Control Operation

Wireless or pendant control options allow for safe, precise, and easy operation, keeping operators at a safe distance from heavy loads.

Reduced Ground Obstruction

Gantry design keeps the workspace open and accessible, with minimal permanent infrastructure on the ground.

Customizable Design

Can be tailored with various spans, lifting heights, and additional features like cantilevers, walkways, or lighting systems based on site requirements.

Applications of a 20 Ton Outdoor Gantry Crane

A 20-ton outdoor gantry crane is a versatile lifting solution widely used across various industries for heavy material handling tasks. Below are common application areas:

1. Construction Sites

Lifting and positioning heavy building materials such as steel beams, precast concrete segments, and equipment

Assisting with bridge and road construction by transporting large structural components

2. Shipyards and Marine Industry

Handling large ship components like engines, hull segments, and containers

Used for loading/unloading ships or assembling parts in dry dock facilities

3. Rail Yards

Moving large train parts, containers, and heavy maintenance equipment

Ideal for transferring cargo from rail cars to trucks or storage areas

4. Steel and Metal Yards

Transporting long steel profiles, metal sheets, coils, and fabricated structures

Efficiently handles heavy and irregularly shaped items

5. Prefabrication Yards

Lifting and transferring prefabricated concrete elements such as panels, columns, slabs, and beams

Supports modular building operations and site logistics

6. Power Plants and Utility Sites

Used during installation and maintenance of turbines, transformers, and heavy electrical components

Essential for infrastructure construction in remote or exposed areas

7. Mining and Quarry Operations

Moving drilling equipment, pipes, and raw material containers

Withstands dusty, rugged conditions often found in mining environments

8. Logistics and Freight Terminals

Loading and unloading heavy cargo or machinery from trucks and trailers

Facilitates outdoor storage and inventory management

9. Aerospace and Heavy Machinery Assembly

Assists in lifting and positioning large components of aircraft or heavy machinery for assembly outdoors

1. Design stage: Determine the parameters of the crane, such as rated load, span and lifting height, according to the customer's needs and working environment. Carry out detailed structural design, including main beam, end beam, crane, lifting mechanism, etc., to ensure that the design meets safety standards and usage requirements. Select appropriate materials according to the design, usually high-strength steel to ensure the stability and durability of the structure.

2. Manufacturing stage: Prepare the required raw materials and parts according to the design drawings. Cut, bend and shape the steel to prepare structural components such as main beams and end beams. Weld the various components and assemble them into an overall structure. This step requires guaranteed welding quality to ensure strength and stability.

3. Machining: Machining key components such as motors, gears, bearings, etc. to ensure that their size and accuracy meet the requirements. Anti-corrosion treatment of components, such as painting and galvanizing, increases the durability and aesthetics of the equipment.

4. Electrical system installation: Install electrical components such as motors, controllers, switches, sensors and alarm systems. Connect and wire cables to ensure the normal operation of the electrical system.

5. Assembly phase: Assemble all components and systems as a whole, connect the lifting mechanism, trolley running mechanism and control system. Perform a comprehensive inspection of the assembled crane to ensure that all components and systems are working properly, and perform preliminary debugging.

6. Testing phase: Perform static load test on the crane to check the structural strength and stability. Perform dynamic test on the crane, including tests on lifting, moving, braking and other functions, to ensure that its performance meets the design requirements. Check the functions of safety devices, such as limit switches, overload protection, etc., to ensure the safety of the equipment during operation.

7. Quality control: Perform quality control on each link in the production process to ensure compliance with industry standards and customer requirements. Record various data and inspection results in the production process for subsequent traceability and analysis.

8. Delivery and installation: Pack and prepare the completed crane for transportation to ensure that it is not damaged during transportation. Deliver the crane to the customer's site for installation, and perform on-site debugging and acceptance. Provide operation training to customers to ensure that they are proficient in the use and maintenance of the crane.

Workshop view:

The company has installed an intelligent equipment management platform, and has installed 310 sets (sets) of handling and welding robots. After the completion of the plan, there will be more than 500 sets (sets), and the equipment networking rate will reach 95%. 32 welding lines have been put into use, 50 are planned to be installed, and the automation rate of the entire product line has reached 85%.