50t Godown Double Girder Gantry Crane With Md Electric Hoist

A Godown Double Girder Gantry Crane with MD Electric Hoist is a robust material handling solution specifically designed for indoor storage areas such as warehouses (godowns), logistics centers, and industrial workshops. This type of crane offers superior lifting capacity, stability, and efficient space utilization-making it ideal for handling heavy goods within a confined or structured space.

Key Features:

Double Girder Structure:
Provides increased strength and load capacity, allowing the crane to handle medium to heavy-duty lifting tasks reliably.

MD Type Electric Hoist:
Equipped with a high-quality MD (Medium Duty) electric wire rope hoist that offers two lifting speeds-normal and slow-for both precision and efficiency.

Gantry Design for Godowns:
Built with legs that support the crane structure, eliminating the need for building-mounted runways or overhead beams-ideal for facilities without existing crane infrastructure.

Efficient Space Utilization:
Designed to maximize vertical and horizontal storage space, improving handling operations in tight indoor areas.

Reliable Travel Mechanism:
Smooth operation with motorized travel on wheels or rails, ensuring accurate load placement and improved workflow.

Applications:

Indoor godowns and warehouses

Industrial manufacturing units

Logistics and distribution centers

Precast and metal part handling

Advantages:

Strong and stable for heavy lifting

Precise hoisting with dual-speed MD electric hoist

Easy to install without major structural changes

Low maintenance and long operational life

Customizable span and height to suit godown layout

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 Girder Bridge (Main Beams):

Two parallel girders form the primary horizontal structure.

Provides high strength and load-bearing capacity.

Supports the trolley and hoisting mechanism for safe, stable lifting.

MD Electric Wire Rope Hoist:

A reliable electric hoist mounted on the trolley.

Features dual lifting speeds (normal and slow) for precision and efficiency.

Includes motor, drum, gearbox, wire rope, and hook assembly.

3.End Carriages / Wheel Assemblies:

Located at the base of each leg.

Equipped with rail wheels (for rail-mounted cranes) or rubber wheels (for floor movement).

Include drive systems for crane travel along the godown floor or tracks.

4.Travel Mechanism (Crane Movement System):

Includes motors, gearboxes, and wheel drives for horizontal crane movement.

Ensures smooth travel along the working area, with or without rails.

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 Godown Double Girder Gantry Crane with MD Electric Hoist

High Load Capacity and Stability

The double girder structure provides excellent strength and rigidity, enabling the crane to handle heavier loads than single girder or monorail systems.

Precision Lifting with MD Electric Hoist

The MD (Medium Duty) electric hoist offers dual-speed lifting (fast and slow), allowing both efficient material handling and fine control for delicate or precise operations.

Optimal for Indoor Use (Godowns & Warehouses)

Specifically designed for structured indoor spaces like godowns.

Can be customized to fit the existing layout without major building alterations.

Space Efficiency

The overhead design and trolley running on top of the girders provide maximum hook height, allowing better vertical clearance and storage optimization.

Cost-Effective Installation

Requires no overhead runway beams or structural columns, especially if gantry rails or free movement is used.

Easier and less expensive to install than overhead bridge cranes.

Mobility (Optional on Wheels)

Can be rail-mounted or wheel-mounted (rubber tires), offering flexible movement across the workspace.

Ideal for changing warehouse layouts or multiple work zones.

Low Maintenance & Durable Design

Built with quality steel and components for long-term durability in indoor environments.

The MD hoist is easy to service, reducing downtime and maintenance costs.

Safety Features

Equipped with essential safety systems:

Limit switches

Overload protection

Emergency stop

Brakes on all movements

Enhances safe operation even in busy indoor settings.

Operator Convenience

Simple control via pendant, remote, or cabin control, ensuring flexible operation based on load size and workspace.

Customizable Design

Tailored to match the godown's span, lifting height, and operational requirements.

Optional add-ons like anti-collision sensors, lighting, and load indicators enhance productivity.

Applications of Godown Double Girder Gantry Crane with MD Electric Hoist

A Godown Double Girder Gantry Crane with MD Electric Hoist is designed for reliable, efficient lifting in indoor storage and industrial environments. Its dual-speed hoisting, strong double-girder frame, and flexible gantry design make it ideal for various sectors:

🏭 1. Warehousing and Logistics Centers

Lifting and organizing heavy goods or pallets

Transferring materials from unloading zones to storage racks

Efficient space utilization in indoor godowns

🧱 2. Manufacturing and Assembly Units

Handling machine parts, molds, tools, and heavy equipment

Loading/unloading components between workstations

Supporting production lines with regular material movement

🧱 3. Precast Concrete and Construction Material Storage

Lifting and stacking heavy precast slabs, beams, or blocks

Indoor storage of cement bags, steel rods, or construction parts

⚙️ 4. Heavy Machinery Storage and Maintenance Bays

Transporting heavy spare parts and machinery for repair or service

Safe and precise positioning of machine components

🔧 5. Engineering Workshops and Fabrication Units

Handling fabricated metal structures, pipes, plates, and assemblies

Supporting welding and cutting operations with steady material flow

🚚 6. Loading and Unloading Zones

Moving goods between trucks and indoor storage racks

Ideal for godowns without dock-level access or permanent loading bays

🔩 7. Tool Rooms and Mold Handling

Precise handling of dies, molds, and tools using dual-speed MD hoist

Ensures gentle lifting and lowering of delicate components

✅ Why It's Ideal for These Applications:

High lifting capacity with compact design

Accurate load handling with MD electric hoist (normal & slow speed)

Adaptable to confined indoor areas without needing ceiling supports

Smooth and safe operation for repetitive or sensitive lifting tasks

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%.