Single Beam Gantry Crane Supply

 

A Single Beam Gantry Crane (also called a single girder gantry crane) is a type of overhead lifting equipment used for handling and transporting heavy loads in outdoor or indoor applications where runway beams are not feasible. It has one main horizontal beam (girder) supported by two legs, which move on wheels or rails installed on the ground.

 

Place of Origin:Henan, China

Warranty:2 years

Weight (KG):60000 kg

Video outgoing-inspection:Provided

Machinery Test Report:Provided

Application:warehouses,factory and other place

Crane type:box type gantry crane

Travelling speed:20m/min

Lifting mechanism:Electric Hoist

Control method:Ground Control+ Remote Control (customized)

Working duty:A5

Working Temperature:-20~+40℃

Industrial voltage:380V50HZ3Phanse or other

Color:Customised

Customization:Accepted

 

 

1.Main beam

Structure & Design:
Type: Usually a box-type welded structure or I-beam (H-beam in some designs).

Material: High-strength structural steel (e.g., Q235B, Q345B).

Cross-section: Optimized for bending resistance and rigidity.

Fabrication: Welded and precision machined to ensure straightness and strength.

Surface Treatment: Sandblasted and coated with anti-corrosion paint or epoxy primer + finishing paint.

 

2.Lifting System

The lifting system of a Single Beam Gantry Crane is the core mechanism responsible for raising and lowering loads. It typically consists of an electric hoist mounted beneath the main beam, traveling along its length to position the hook directly above the load.

3.End carriage

The end carriage of a Single Beam Gantry Crane is the structural and mechanical assembly located at both ends of the crane's main beam. It connects the main beam to the supporting legs and enables the crane to move along ground rails or tracks.
Frame Construction:

Material: High-strength steel plates (typically Q235 or Q345).

Fabrication: Welded box-type or H-beam design to ensure rigidity and durability.

Mounting Interface: Bolted or welded to the legs and main girder.

Machined surfaces: Precision-machined for proper wheel alignment and smooth travel.

                                         

4.Crane travelling mechanism

1)Travel Motors:

Typically 1 or 2 motors, depending on crane size and capacity.

Motor Type: Squirrel cage motors or brake motors.

Mounting: Directly coupled or via shaft to the wheel axles or gearboxes.

Protection: IP54/IP55 with thermal overload protection.

2)Gear Reducers / Gearboxes:

Purpose: Reduces the speed and increases torque from the motor.

Design: Enclosed, helical or bevel-helical gearboxes with hardened gears.

Oil-lubricated for long service life.

3)Wheels:

Material: Forged steel or cast steel (e.g., ZG430640).

Flange Type: Double-flanged wheels for guided rail movement.

Wheels are mounted on bearing housings for smooth rotation.

4)Drive Configuration:

One-side drive: One end carriage powered, the other idling.

Two-side drive: Both end carriages powered for better traction and balance (recommended for larger cranes).

5)Couplings / Shafts:

Used to connect motors to wheels or gearboxes if they're not directly mounted.

Flexible couplings absorb torque fluctuations and misalignments.

6)Control:

Travel direction (forward/reverse) and speed controlled via:

Pushbutton pendant.

Radio remote.

Cabin control.

Optional inverter drive (VFD) allows soft start/stop and speed regulation to reduce load sway.

5.Trolley travelling mechanism

1)Trolley Frame:

Structure: Compact, welded steel structure or cast steel side plates.

Mounting: Carries the hoisting mechanism (electric wire rope hoist or chain hoist).

2)Travel Wheels:

Material: Forged or cast steel.

Type: Guide rollers or flanged wheels depending on beam design.

Mounted with sealed bearings for smooth movement.

3)Travel Motor:

Integrated with hoist or mounted separately (depending on hoist type).

Type: Squirrel cage or brake motor, with built-in thermal protection.

Often features VFD (variable frequency drive) for soft start and adjustable speed.

4)Gearbox / Reducer:

Compact gear reducers transmit motor power to the travel wheels.

Enclosed and lubricated for durability.

5)Drive Mode:

Single drive: One motor powers both wheels via shaft or chain link.

Dual drive: Separate motors for each wheel on larger or heavier trolleys.

6)Travel Path:

Moves along the lower flange of the I-beam or box girder.

Equipped with side rollers to prevent derailment and guide alignment.

6.Crane wheel

1)Material:

Typically made from forged or cast steel, such as ZG430640 or 42CrMo, known for high strength, toughness, and wear resistance.

2)Types:

Driven Wheels: Connected to the motor and gearbox to provide traction.

Idle Wheels: Rotate freely and follow the motion of the driven wheels.

3)Design:

Double-flanged wheels are standard for guiding along rails and preventing derailment.

Optional single-flange or no-flange (with guide rollers) depending on track design.

7.Crane Hook

1)Material:

High-strength forged alloy steel such as DG20, 35CrMo, or 42CrMo.

Heat-treated for increased toughness and fatigue resistance.

2)Type:

Single Hook (most common): Used for loads up to ~20 tons.

Double Hook: Rare in single girder gantry cranes; used for larger or specific applications.

Usually C-type or DIN standard hooks.

3)Swiveling Mechanism:

Many hooks are 360° rotatable to allow precise alignment with the load.

Equipped with thrust bearings to prevent twisting of lifting wire rope or chain.

8.Motor

1)Lifting Motor:

Powers the hoist to raise/lower loads.

Typically an asynchronous squirrel-cage motor with high starting torque.

Integrated into an electric wire rope hoist or chain hoist.

2)Trolley Travel Motor:

Drives the hoist crosswise along the bridge beam.

Small-sized 3-phase motors, often brake motors (with built-in electromagnetic brakes).

3)Crane Travel Motor:

Drives the entire crane longitudinally along the gantry rails.

Usually equipped with soft start or frequency inverters to prevent jerking.

Often SEW, ABM, NORD, or Chinese equivalents like YZR or ZD motors.

.

9.Sound and light alarm system & limit switch

The Sound and Light Alarm System and Limit Switches of a Single Beam Gantry Crane are essential safety components that help prevent accidents, equipment damage, and operational errors. These devices serve as early warning and protective mechanisms during crane operation.
1)Sound and Light Alarm System
Purpose:
To alert personnel in the vicinity when the crane is in operation, especially during movement or lifting, enhancing workplace safety.
2)Limit Switches
Purpose:
To prevent over-travel or over-lifting, stopping the crane or trolley automatically before hitting mechanical limits.

10.Safety Devices

1)Overload Protection Device
Purpose: Protects the crane from lifting loads beyond its rated capacity.
How it works: When the load exceeds the crane's maximum lifting capacity, the device automatically stops the lifting operation to prevent damage.
Types:
Mechanical overload limiters.
Electronic overload sensors integrated with the hoist motor.
Activation: Visual and audible alerts signal when overload is detected.
2)Emergency Stop Button
Purpose: Provides an immediate stop during dangerous situations.
Location: Typically located at the control panel and operator station.
Activation: Pressing this button immediately halts all crane movements, including lifting, traveling, and trolley motions.
3)Anti-collision System
Purpose: Prevents collisions between the crane and other objects or structures.
How it works: Proximity sensors detect obstacles (such as structures, other cranes, or workers) and stop the crane from moving in the direction of the obstacle.
Types:
Radar-based sensors.
Laser scanning sensors.
Infrared or ultrasonic proximity sensors.
4)Limit Switches
Purpose: Prevents the crane from exceeding its operating limits (e.g., hoist, trolley, and crane travel limits).
Types:
Lifting Limit Switch: Stops the hoist when the hook reaches its upper or lower limit.
Trolley Travel Limit Switch: Prevents the trolley from traveling beyond the tracks.
Crane Travel Limit Switch: Stops the crane at the end of its travel path.
5)Brake Systems
Purpose: Ensure the crane stops safely and holds the load in place when required.
Types:
Electromagnetic brakes (for emergency stops).
Mechanical brakes for load holding.
Dynamic braking systems to slow down the crane during operation.
Automatic Brake Testing: Ensures the brakes engage properly and hold the load under normal and emergency conditions.

11.Control Mode

1)Cabin Control Mode
Description:
In cabin control mode, the operator is seated inside a crane cabin located on the crane's structure, usually on the end carriage.

The crane's control panel inside the cabin allows the operator to control the hoisting, trolley movement, and crane travel.
2)Radio Remote Control Mode
Description:
In radio remote control mode, the crane is operated via a wireless remote controlled by the operator. This allows the operator to move around the crane and the worksite while controlling its movements.
3)Pendant Control Mode
Description:
Pendant control uses a wired controller, which is physically connected to the crane.

The pendant is typically held by the operator, giving them direct control over the crane's hoisting, trolley movement, and traveling.
4)Automatic Control Mode (Pre-programmed Control)
Description:
Some single beam gantry cranes may be equipped with automated control systems for specific tasks, such as precise positioning, repetitive lifting, or automated movements along pre-defined paths.

Sensors and programmable logic controllers (PLC) are used to control movements without continuous operator input.
4)Dual Control Mode (Combination of Manual and Remote Control)
Description:
A dual control system allows the crane to be operated both manually (via pendant or cabin) and remotely (via radio control).

The operator can switch between modes depending on the task or preference.

Sketch

Main technical

 

 

1. Cost-Effective
Lower Initial Investment: Single beam gantry cranes generally have a lower initial cost compared to double girder cranes due to their simpler design.

Reduced Maintenance Costs: With fewer components (such as beams and wheels), maintenance and operational costs tend to be lower.

2. Compact and Space-Saving Design
Space Efficiency: The crane's single beam structure allows for more compact and efficient use of space, making it ideal for environments with limited headroom or space constraints.

Lightweight: A single beam is typically lighter than a double beam, which allows the crane to operate in a variety of smaller spaces while still carrying heavy loads.

3. Ease of Installation
Simplified Setup: The simpler design of a single beam gantry crane means it is usually quicker and easier to install, especially in smaller or more constrained spaces.

Lower Foundation Requirements: Because of its lower weight and simpler structure, the foundation requirements for installation are typically less complex compared to more massive double girder cranes.

4. Flexibility
Variety of Configurations: Single beam gantry cranes can be designed in different configurations, including rail-mounted and rubber-tired versions, offering flexibility for a range of operational environments.

Adaptability: They can be easily adapted to meet various material handling needs, such as lifting different types of loads or working in diverse industries like warehouses, ports, and factories.

5. Operational Efficiency
High Load Capacity for Its Size: Despite being a single beam structure, these cranes can still handle a substantial lifting capacity, making them suitable for a wide range of lifting applications, typically up to 10-20 tons.

Smooth Operation: They are designed for smooth and efficient hoisting, with the ability to lift, lower, and move loads precisely, ensuring productive operations.

Lower Operating Costs: With a lighter design and more straightforward mechanism, they tend to consume less power, reducing electricity usage and operating costs.

 

1. Construction Sites
Material Handling: Single beam gantry cranes are commonly used at construction sites to lift and transport building materials, such as concrete, steel beams, and other heavy equipment. Their ability to move along tracks or on rubber tires makes them ideal for working in construction areas with tight spaces or heavy traffic.

Equipment Placement: They can be used to lift and place large equipment, machinery, or scaffolding during construction.

2. Shipping and Ports
Cargo Handling: Single beam gantry cranes are often used in port areas for loading and unloading cargo from ships, especially in smaller ports or areas with less space. They are effective for handling containers, bulk materials, and other goods, ensuring quick and safe movement of goods from dockside to storage areas.

Intermodal Transport: In ports and transport hubs, these cranes are also used for transferring goods between trucks, trains, and ships.

3. Warehouses and Distribution Centers
Inventory Management: In warehouses, these cranes help manage heavy inventory and materials, moving goods from one part of the facility to another. They are commonly used for lifting and storing large pallets or bulk items in industrial settings.

Storage Racking Systems: Used for loading and unloading materials in high-rise storage systems, maximizing space usage in warehouses with limited floor space.

4. Factories and Manufacturing Plants
Assembly Line Support: In manufacturing environments, these cranes are used to move materials or finished goods along production lines, such as in automotive, steel, or appliance manufacturing plants.

Machine Lifting: For heavy machinery and equipment, single beam gantry cranes assist in lifting and positioning machines during installation, maintenance, or repair.

5. Steel Mills and Foundries
Heavy Material Handling: In steel mills, foundries, and other metalworking industries, single beam gantry cranes are essential for moving large, heavy metal components or products, such as steel plates, rolls, and ingots.

Hot Work Environments: These cranes are used in environments where high temperatures are present, and they can handle the safe lifting of molten metals or heavy steel structures.

6. Shipbuilding and Dry Docks
Ship Assembly: In the shipbuilding industry, single beam gantry cranes are used to move and position large parts of ships, including hull sections, propulsion systems, and other heavy materials. They are highly effective in dry docks and shipyards for moving oversized loads.

Boat and Yacht Manufacturing: In boat and yacht production, these cranes help lift heavy components or assembled parts, ensuring safe and efficient transport within the manufacturing area.

 

 

1. Design and Engineering
Pre-production Planning:

The design of the crane is created based on the client's requirements, including load capacity, lifting height, span, and other specifications.

Engineering teams ensure the design adheres to industry standards, safety regulations, and environmental factors.

Detailed drawings are prepared for each component of the crane (main beam, hoist, trolley, end carriage, etc.).

Material Selection:

Materials are selected based on strength, durability, and suitability for the specific crane application. This may include high-strength steel for the main beam, components, and hoisting systems.

2. Material Procurement
Sourcing Components:

Various crane components such as the main beam, hoist, trolley, motors, gears, and control systems are sourced from trusted suppliers.

High-quality materials like steel plates and beams are procured to meet the design specifications.

Inventory Management:

Materials and components are inventoried to ensure they are available when needed, reducing delays in the production process.

3. Fabrication of Crane Components
Cutting and Welding:

The steel beams are cut into the necessary lengths, and components like the main beam, legs, and cross beams are welded together.

Welding is performed with precision to ensure structural integrity and load-bearing capacity.

Specialized equipment like CNC machines and automated welding machines may be used for high precision.

Main Beam Assembly:

The main beam is one of the key components of the gantry crane. It is fabricated by welding the steel plates together and ensuring proper alignment for the overall structure.

Reinforcement is added to areas that will bear heavy loads to enhance stability and strength.

Trolley and Hoist Assembly:

The trolley is assembled with wheels, motors, and a hoist to facilitate the horizontal movement of the load.

The hoist mechanism is installed, which includes the motor, gearbox, drum, and wire ropes.

End Carriage Fabrication:

The end carriages, which are responsible for supporting the crane and facilitating the travel along the rails, are fabricated and welded. They are equipped with wheels or rubber tires depending on the design.

4. Component Testing
Structural Integrity Testing:

All welded and fabricated components, including the main beam and end carriages, are tested for structural integrity through visual inspection and non-destructive testing (e.g., X-rays, ultrasonic tests) to ensure there are no weaknesses or defects.

Mechanical Testing:

Trolleys, hoists, and lifting mechanisms are tested for smooth operation. Motors, gears, and brakes are tested to ensure proper functioning under load.

Load Testing is done to check if the crane can handle its rated load capacity safely.

Electrical System Testing:

The crane's control system, wiring, and electrical components are tested for proper functionality.

The control panel and remote control systems are checked for smooth operation and reliability.

5. Crane Assembly
Final Assembly:

The main beam is mounted on the end carriages, and the complete structure is assembled.

The trolley and hoist system are mounted on the crane frame, ensuring that all components are correctly aligned.

Wiring and Control System Installation:

Electrical wiring is installed, connecting the crane's motors, control panels, remote systems, and sensors.

The limit switches, safety devices, and sound and light alarms are integrated into the system.

6. Functional and Safety Testing
Operational Testing:

After the crane is fully assembled, it undergoes rigorous functional testing. This includes checking the lifting, lowering, and horizontal movement of the crane to ensure smooth operation.

The trolley traveling mechanism, crane traveling mechanism, and hoisting system are tested to confirm they meet performance specifications.

Safety and Control Testing:

The limit switches, emergency stops, and safety alarms are checked to ensure they function as expected during the crane's operation.

Load testing is performed by lifting the rated load to ensure the crane can safely handle the intended weight without any malfunction.

Control Mode Testing:

If the crane includes radio remote control or other control systems, they are tested for responsiveness and ease of use.

The crane's control modes (manual, remote, automatic) are tested for smooth operation and reliability.

7. Painting and Surface Treatment
Surface Preparation:

The crane components undergo cleaning and surface preparation, which may involve sandblasting or using a chemical treatment to remove rust, dust, and other contaminants.

Painting:

A protective coating, typically a primer followed by topcoat, is applied to all crane components to protect against corrosion and environmental wear.

The paint is allowed to cure for the recommended time before further handling.

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%.