Double Beam Grab Hoist Gantry Crane

A Double Beam Grab Hoist Gantry Crane is a type of heavy-duty lifting equipment widely used in industrial settings for material handling, especially where bulk materials like scrap metal, coal, ore, or sand need to be loaded, unloaded, or transferred. This crane combines the structural robustness of a double-girder gantry crane with the precise lifting capability of a hoist and grab bucket system, making it ideal for environments such as steel mills, power plants, ports, and waste processing facilities.

Key Components

Double Beam Structure: Provides high load capacity and stability, allowing the crane to span large distances and handle heavy loads safely.

Gantry Frame: Supports the beams and moves along rails or wheels on the ground, suitable for outdoor or semi-outdoor operations.

Grab Hoist Mechanism: Features an electric or hydraulic grab bucket attached to the hoist, designed to scoop and lift loose materials efficiently.

Trolley System: Mounted on the beams, it travels horizontally to position the grab hoist precisely over the load.

Control System: Can be operated via cabin, remote control, or automatic systems for increased safety and efficiency.

Applications

Scrap yards: For handling irregular scrap materials.

Mining and power stations: For moving coal or mineral ores.

Ports and logistics hubs: For bulk cargo transfer.

Construction and manufacturing: For heavy material distribution.

Advantages

High lifting capacity and operational stability.

Versatile material handling with a grab bucket.

Suitable for outdoor environments due to gantry design.

Customizable spans and lifting heights.

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

Double Main Beams (Girders)

Two parallel steel beams form the primary load-bearing structure.

Provide strength and rigidity for handling heavy loads.

Typically fabricated from box-type or I-beam structures for durability.

Gantry Legs (Supports)

Vertical steel columns that support the main beams.

Connect the upper crane structure to the ground via end carriages.

May be fixed or adjustable, depending on design and mobility requirements.

Grab Hoist Trolley

Mounted on the main beams and travels crosswise.

Contains the hoisting mechanism and grab bucket.

Moves horizontally along the beams for accurate positioning.

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.

Grab Bucket

An electrically or hydraulically operated clamshell or orange-peel type grab.

Designed to lift and carry bulk or irregular materials.

Opens and closes to grip and release materials efficiently.

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

High Lifting Capacity

The double-girder design provides greater load-bearing strength and structural rigidity.

Suitable for heavy-duty applications requiring consistent lifting of large or bulky materials.

Efficient Bulk Material Handling

The integrated grab bucket (electrical or hydraulic) allows for rapid loading and unloading of loose materials such as coal, sand, ore, scrap, or waste.

Ideal for continuous, high-volume operations.

Versatile and Customizable

Can be tailored to various working environments with customizable span, height, and lifting speed.

Different grab types (clamshell, orange peel) can be used based on material type.

Space Utilization

Gantry structure does not require building support columns, making it ideal for outdoor yards or open workspaces.

Frees up floor space compared to overhead cranes.

Wide Working Area Coverage

Travels on ground rails, allowing long-range horizontal movement.

The trolley on the double beams provides wide crosswise coverage.

Improved Stability and Safety

Double beams reduce deflection and sway, ensuring safer handling of heavy or unbalanced loads.

Equipped with safety systems like overload limiters, emergency brakes, and limit switches.

Reduced Labor and Time

Automates tasks that would otherwise require intensive manual labor (e.g., loading/unloading loose materials).

Enhances productivity and reduces handling time significantly.

Durable and Reliable

Built from heavy-duty materials for long service life even in harsh outdoor environments.

Resistant to dust, moisture, and temperature variations with appropriate protection.

Multiple Control Options

Can be operated via cabin, remote control, or automated systems.

Enhances operational flexibility and user safety.

Lower Infrastructure Cost (Compared to Bridge Cranes)

Since it runs on ground tracks, it doesn't need building modifications or runway beams, which can reduce installation costs.

Scrap Yards & Recycling Facilities

Handling, sorting, and transferring scrap metal, waste materials, or recyclables.

Grab bucket is ideal for irregular and loose material.

Steel Plants

Loading/unloading raw materials like iron ore, limestone, or coke.

Transferring scrap into furnaces or ladles.

Ports & Harbors

Unloading bulk cargo (coal, grain, fertilizer, minerals) from ships.

Moving loose materials from ships to trucks or storage yards.

Coal and Thermal Power Plants

Transferring coal, ash, and other bulk fuels between railcars, bunkers, and conveyors.

Designed for continuous, high-cycle operations.

Cement and Aggregate Industries

Handling materials like sand, gravel, clinker, and raw mix.

Facilitates rapid loading/unloading in open yards.

Mining Operations

Moving excavated materials, ore, or tailings.

Used in surface mining or mineral processing areas.

Waste-to-Energy and Biomass Plants

Feeding waste, refuse-derived fuel (RDF), or biomass into processing units.

Grab system allows for consistent, automated material flow.

Rail Yards and Logistics Terminals

Loading/unloading loose goods or raw materials from open rail wagons or freight cars.

Improves material turnaround time.

Construction Sites (Large-Scale)

Transporting bulk aggregates, earth, or demolition debris.

Useful where tower cranes or mobile cranes aren't feasible.

Municipal Waste Handling

Lifting and distributing solid waste in landfills or sorting facilities.

Grab hoist helps automate part of the manual sorting and loading processes.

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%.