Double Girder European Overhead Cranes

 

 

A Double Girder European Overhead Crane is a robust and efficient material-handling system commonly used in industrial settings for lifting and transporting heavy loads. Here's a brief introduction to its main features:

1. Structure:

Double Girder: It consists of two parallel girders that run along the span of the crane, providing greater strength and stability. This design allows the crane to handle heavier loads and cover wider spans compared to single-girder cranes.

Overhead Design: The crane runs on rails or beams mounted on the building structure, typically above the workspace, maximizing floor space.

2. European Style:

The European crane design emphasizes compactness, efficiency, and energy savings. It is characterized by low headroom, lightweight construction, and optimized dimensions to fit within smaller workspaces.

European overhead cranes often use high-tech components, such as variable frequency drives (VFD), intelligent controls, and enhanced safety systems.

3. Main Components:

Trolley & Hoist: Mounted on top of the double girders, the hoist is responsible for lifting loads. The trolley moves along the girders, allowing for horizontal movement.

Bridge: The two girders form the bridge of the crane, which spans across the workshop, allowing the crane to move back and forth.

End Trucks: These are attached at both ends of the girders and house the wheels that run on the runway rails.

Control System: Modern cranes often use wireless remote controls or cabin controls for operation, improving ease of use and operator safety.

4. Advantages:

High Lifting Capacity: Due to the double girder design, these cranes can lift very heavy loads, often up to 100 tons or more.

Wide Span & High Lifting Height: Ideal for wide factory spaces or warehouses where high lifts are required.

Durability: Built for heavy-duty, long-term usage, often with precise engineering to meet specific industry needs.

Safety & Efficiency: Advanced control systems, anti-sway technology, and overload protection enhance operational safety and efficiency.

5. Applications:

Manufacturing Plants: For moving raw materials, machinery, or finished products.

Steel Plants: Used for handling large steel plates, coils, and other heavy materials.

Warehouses & Logistics: For loading, unloading, and moving goods.

Heavy Industries: Such as shipbuilding, automotive, and aerospace sectors, where precision lifting is needed.

In summary, Double Girder European Overhead Cranes are highly efficient, durable, and optimized for various industrial applications where heavy and precise lifting is essential.

 

Warranty:1 Year

Weight (KG):2000 kg

Feature:Bridge Crane

Condition:New

Rated Lifting Moment:5-500 tons

Max. Lifting Load:500 tons

Span:4.5-31.5m

Power supply:3 Phase AC 380V 50HZ

Control method:remote Control, pendent control,cabin control

Lifting mechanism:Electric Hoist or trolley

Crane type:Double Girder

 

 

50 Or 10ton Hanger Bridge Crane

1.Double Girders

Description: Two parallel horizontal beams (girders) that span the width of the crane's operating area. They provide the primary structural support for the crane.

Function: They allow the crane to handle heavier loads and cover wider spans compared to single-girder cranes. The trolley and hoist travel along the top or bottom of these girders.

 Trolley

Description: A motorized platform that moves along the double girders.

Function: The trolley carries the hoist and is responsible for horizontal movement along the girders, allowing the load to be moved across the span of the crane.

 Hoist

Description: The hoist is the lifting mechanism mounted on the trolley, and it includes a drum or chain that lifts and lowers the load.

Types: Can be either wire rope hoists or chain hoists.

Function: It handles the actual lifting and lowering of loads. In the European design, hoists are often more compact and energy-efficient.

 

3.End Trucks

Description: These are located at each end of the bridge girders.

Function: The end trucks house the wheels that allow the crane to move along the runway rails. They provide stability and support for the bridge while allowing longitudinal movement.

 

 

4.Crane travelling mechanism

1. Components

The crane mechanism is usually composed of the following main components:

Motor: Provides power to drive the movement of the crane.

Reducer: Converts the high speed of the motor into a suitable low-speed high-torque output to drive the wheels.

Wheels: Contact the track, carry the weight of the crane and allow it to move smoothly.

Underframe: Supports the entire crane mechanism and is connected to the main beam.

2. Working principle

The crane mechanism drives the reducer through the motor, and the reducer transmits power to the wheels, pushing the crane forward and backward on the track. The control system can adjust the start, stop and running speed of the motor to achieve precise control.

5.Trolley travelling mechanism

1. Working principle

The trolley running mechanism drives the reducer through the motor, and the reducer transmits power to the wheels to push the trolley forward and backward on the main beam. The control system can adjust the start and stop and running speed of the motor to achieve precise control of the hoist.

2. Control method

The control methods of the trolley running mechanism usually include:

Manual control: manual operation through the control panel or handle.

Remote control: using a wireless remote control to increase operational flexibility and safety.

Automatic control: automatic control is achieved through PLC (programmable logic controller), which is suitable for integrated operation of the production line.

3. Safety device

The trolley running mechanism is usually equipped with a variety of safety devices to ensure safe operation:

Overload protection: when the load exceeds the rated value, it automatically stops running to protect the equipment.

Limit switch: prevents the trolley from exceeding both ends of the main beam to avoid equipment damage.

Emergency stop device: in an emergency, the operator can quickly stop the movement of the trolley.

6.Crane wheel

1. Material selection

The wheels are generally made of high-strength alloy steel or cast iron to ensure their strength and wear resistance under high load conditions. The choice of materials directly affects the service life and load-bearing capacity of the wheels.

2. Working principle

The wheels carry the weight of the crane and provide stable support by contacting the track. Driven by the motor, the wheels rotate and push the entire crane along the track. Good contact and friction ensure the safe and stable operation of the crane.

3. Design requirements

The design of the wheels needs to consider multiple factors:

Carrying capacity: According to the maximum load of the crane, the wheels need to have sufficient carrying capacity.

Friction coefficient: Ensure that there is appropriate friction between the wheels and the track to prevent slipping.

Wear resistance: The surface of the wheel needs to have good wear resistance to cope with long-term operation.

7.Crane Hook

1. Structural composition

The hook is usually composed of the following main parts:

Hook body: the main load-bearing part, usually made of high-strength steel, and the shape is designed to ensure the stability of the heavy object.

Hanging ring: used to connect the lifting wire rope or sling, which is convenient for connecting with the heavy object.

Safety lock: prevents the hanging object from accidentally falling off during the lifting process and increases safety.

2. Material selection

The hook generally uses alloy steel or special alloy materials to provide sufficient strength and toughness. The choice of materials directly affects the load-bearing capacity and durability of the hook.

3. Working principle

During the lifting operation, the hook is connected to the lifting wire rope through the hanging ring, and the hook body safely hangs the heavy object. When the lifting system is working, the hook lifts the heavy object through the wire rope to complete the handling task.

Motor

1. Types

Common motor types include:

AC motors: widely used in cranes, with advantages such as smooth start-up and high operating efficiency.

DC motors: suitable for occasions requiring speed regulation, with good control performance.

2. Maintenance and care

Regular maintenance is essential to the performance of the motor, including:

Lubrication: Regularly check and replace lubricating oil to ensure smooth operation of moving parts.

Electrical inspection: Check electrical connections and insulation to ensure safety.

Operation status monitoring: Monitor the working status of the motor to detect and solve problems in a timely manner.

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Sound and light alarm system & limit switch

1. Sound and light alarm system

Warning function: When the crane is lifting, moving or operating, when it approaches a dangerous area or there is an abnormal situation, the system will send out sound and flash signals through the sound and light alarm device to remind the operator and surrounding personnel to pay attention to safety.

Status prompt: When the crane starts, stops, is overloaded or other important status changes, the sound and light alarm system will issue corresponding prompts to help the operator understand the equipment status in time.

2. Limit switch

Safety protection: The limit switch is used to limit the range of motion of the crane to prevent it from exceeding the safe working range and avoid equipment damage and accidents.

Automatic stop: When the crane reaches the preset limit, the limit switch will automatically cut off the power supply and stop the motor from working.

10.Safety Devices

1. Emergency stop device: In an emergency, the operator can quickly stop all movements of the crane to avoid accidents.

2. Sound and light alarm system: When the crane is working, if there is an abnormal situation (such as approaching the limit or overloading), the sound and light alarm system will emit sound and flash signals to remind the operator and surrounding personnel to pay attention.

3. Safety lock: used to prevent the hook or sling from accidentally falling off during the lifting process, increasing the safety of the lifting operation.

4. Electrical protection device: prevent the electrical system from overloading, short circuit or leakage, and ensure the safety of equipment and operators.

5. Safety cover: Cover vulnerable parts such as motors, transmission mechanisms, etc. to prevent operators from accidentally contacting them during work. The protective cover should have good visibility and durability, and be easy to operate and maintain.

6. Operation monitoring system: monitor the operating status of the crane in real time, record data, and issue an alarm when an abnormality occurs. Including sensors, display screens and control systems.

The safety device of double-beam bridge crane is an important guarantee to ensure the safe operation of the equipment. Reasonable design, regular maintenance and timely inspection can effectively reduce the risk of accidents and improve the safety and reliability of the crane. Operators should strictly follow the safety operating procedures to ensure that the hoisting operation is carried out in a safe environment.

11.Control Mode

1. Manual control: The operator directly controls the various actions of the crane, such as lifting and moving, through the control panel or handle. Simple and intuitive, suitable for small or short-time operations.

2. Remote control: Use a wireless remote control to control the operation of the crane, and the operator can control it from a safe distance. High flexibility, suitable for operations in complex or dangerous environments.

3. Automatic control: Automatic control is achieved through PLC (Programmable Logic Controller), which can automatically perform lifting operations according to preset programs. Improve efficiency and is suitable for high-frequency and repetitive operations.

4. Centralized control: Multiple cranes are centrally managed by a control center, and operators can monitor and control multiple devices at the same time. Suitable for large industrial sites to improve overall operation coordination.

5. Intelligent control: Combine sensors and monitoring systems to achieve intelligent monitoring and adjustment, such as real-time load monitoring and status feedback. Improve safety and efficiency and adapt to modern production needs.

6. Safety control: Equipped with safety protection devices (such as overload protection, limit switches) to ensure automatic shutdown under abnormal conditions. Enhance equipment safety and prevent accidents.

12.Sketch

Main technical

 

Double Girder European Overhead Cranes offer several advantages that make them highly efficient, durable, and cost-effective for material handling, especially in industrial and heavy-duty applications. Here are some key advantages:

1. Higher Lifting Capacity

Advantage: The double girder design provides greater strength and rigidity, allowing the crane to lift heavier loads, often up to 100 tons or more.

Benefit: Ideal for industries that require handling large, heavy equipment or materials, such as steel manufacturing, shipbuilding, and heavy engineering.

2. Wider Span & Longer Travel Distance

Advantage: Double girder cranes can span much larger distances compared to single-girder cranes, allowing coverage over a broader workspace.

Benefit: They are perfect for larger factories, warehouses, and workshops where wide-span handling is necessary.

3. Increased Lifting Height

Advantage: The hoist is mounted on top of the double girders, giving the crane a higher lifting height (lifting clearance) compared to single-girder cranes.

Benefit: This is especially beneficial in environments where maximum space utilization is critical, such as tall warehouses or manufacturing plants with high ceilings.

4. Compact and Efficient Design (European Style)

Advantage: European-style cranes are designed to be compact, with low headroom and reduced deadweight. The optimized design includes the use of lightweight materials and advanced technologies, reducing the overall structural load.

Benefit: This compactness enables better use of space and can reduce the need for costly structural reinforcements in the building.

5. Energy Efficiency

Advantage: European cranes often incorporate energy-saving features such as variable frequency drives (VFD), which allow for smooth, energy-efficient acceleration and deceleration.

Benefit: Reduced energy consumption leads to lower operational costs, especially in facilities where the crane is used frequently.

6. Durability and Long Lifespan

Advantage: Double girder cranes are built with heavy-duty components and durable materials that ensure they can handle tough working environments over long periods.

Benefit: Lower maintenance and longer operational life mean less downtime and reduced costs for repairs or replacements.

7. Smooth and Precise Control

Advantage: European overhead cranes come equipped with advanced control systems, including wireless remote controls, anti-sway technology, and precise speed controls (via VFD).

Benefit: Operators can control loads more precisely, reducing the risk of accidents and improving safety. Precision also enhances productivity in handling sensitive or fragile materials.

8. Enhanced Safety Features

Advantage: Modern double girder cranes are equipped with multiple safety features such as overload protection, limit switches, anti-collision systems, and emergency stop functions.

Benefit: These safety measures reduce the risk of accidents, ensuring a safer working environment for operators and other personnel.

9. Better Load Distribution

Advantage: With two girders, the load is distributed more evenly across the crane, reducing stress on individual components and minimizing the risk of structural deformation.

Benefit: This leads to improved structural integrity and performance, particularly when handling very heavy loads.

10. Customizable to Specific Needs

Advantage: Double girder cranes can be customized in terms of capacity, span, lifting height, speed, and additional features to meet the specific requirements of the application.

Benefit: Tailored solutions mean greater efficiency and productivity in specialized industries like aerospace, automotive, and logistics.

11. Greater Flexibility in Hoist Placement

Advantage: In a double girder crane, the hoist can be placed between or above the girders, offering more flexibility in terms of lifting height and clearance.

Benefit: This allows for more precise load handling, especially in confined spaces or areas where maximum clearance is required.

12. Low Maintenance Costs

Advantage: European overhead cranes are designed for durability and reliability, with modern designs requiring less frequent maintenance compared to traditional cranes.

Benefit: Reduced maintenance costs and downtime lead to lower long-term operational expenses.

13. Adaptability to Harsh Environments

Advantage: These cranes can be designed to withstand extreme working conditions such as high temperatures, corrosive environments, or exposure to chemicals.

Benefit: Suitable for challenging industrial environments such as steel mills, foundries, and chemical plants.

In summary, Double Girder European Overhead Cranes offer high lifting capacity, superior efficiency, energy savings, and customizable designs that provide advantages in a wide range of industrial applications, ensuring long-term performance and safety.

 

50 Or 10ton Hanger Bridge Crane

1. Manufacturing Industry

In production lines and assembly workshops, double-girder bridge cranes are used to move and assemble heavy machines and components to improve production efficiency.

2. Construction sites

Used to hoist concrete prefabricated parts, steel structures and other building materials, helping construction units to carry out installation operations quickly and efficiently.

3. Warehousing and Logistics

In warehouses and distribution centers, double-girder bridge cranes are used for the handling, stacking and loading and unloading of heavy objects to improve the efficiency of material handling.

4. Mining Industry

In mines and mineral processing plants, double-girder bridge cranes are used to move heavy equipment and ores to adapt to harsh working environments.

5. Shipbuilding and Maintenance

Used for the construction, repair and dismantling of ships, it is convenient for the handling and positioning of large cargo.

6. Metallurgical Industry

In steel production and metal processing plants, double-girder bridge cranes are used to move heavy metal materials and equipment.

7. Energy Field

In power plants and wind farms, double-girder bridge cranes are used to install and maintain large equipment such as generators and fans.

8. Aerospace

Used to handle and assemble large components such as aircraft fuselages and engines during aerospace manufacturing.

 

50 Or 10ton Hanger Bridge Crane

1. Demand analysis: Communicate with customers to determine the specific parameters and usage requirements of the crane, such as lifting capacity, span, lifting height, etc. Carry out preliminary design and plan formulation according to customer needs.

2. Design stage: Use CAD and other design software for detailed structural design, including main beam, end beam, lifting mechanism, etc. Design control system, motor selection, power distribution system, etc. to ensure the safety and efficiency of the electrical system. Ensure that the design meets relevant safety standards and is equipped with necessary safety devices.

3. Material procurement: Select materials such as high-strength steel to ensure that the load-bearing and durability requirements are met. Purchase motors, reducers, crane rails, hooks and other accessories according to design requirements.

4. Processing and manufacturing: Cut, weld, drill and other processing of raw materials to manufacture various components, such as main beams, end beams, hooks, etc. Assemble the processed parts to form a complete crane structure.

5. Electrical installation: Carry out cable wiring and connection according to the electrical design drawings. Install control panels, remote controls, sensors and other equipment in place to ensure the normal operation of the electrical system.

6. Debugging and testing: Test the various functions of the crane, including lifting, moving, braking, etc., to ensure that it operates normally. Carry out load tests and safety performance tests to ensure the safety and stability of the crane under rated load.

7. Acceptance: Invite customers to conduct on-site acceptance to confirm whether the performance and design of the crane meet the requirements. Provide relevant technical documents, operating instructions and certificates of conformity.

8. After-sales service: Provide customers with installation guidance and technical support to ensure the smooth installation of the crane on site. Train operators to ensure that they have mastered the safe operation and maintenance knowledge of the crane. Provide regular maintenance and inspection services to ensure the long-term stable operation of the crane.

 

 

 

 

 

 

 

Material Inspection

Quality Inspection: Strict quality inspection is carried out on the purchased raw materials to ensure that they meet the design requirements and national standards.

Material Storage: Qualified materials are stored according to classification to prevent corrosion or damage.

Cutting and Forming

Steel Cutting: Use plasma cutting, laser cutting or flame cutting and other technologies to cut the steel according to the size of the design drawing.

Forming Processing: Form the steel plate through bending, rolling, welding and other processes to manufacture the main beam, end beam and other structural parts.

Welding

Component Welding: The cut and formed steel parts are welded into the main structures such as the main beam, end beam and trolley. The welding process needs to be strictly controlled to ensure the structural strength and welding quality.

Weld Inspection: Use non-destructive testing technology (such as ultrasonic testing, radiographic testing) to inspect the welds to ensure that there are no cracks or other defects.

Machining

Precision Machining: Precision machining is performed on the key components of the crane, such as wheel sets, bearing seats, pulleys, etc., to ensure their dimensional accuracy and surface quality.

Assembly of the whole machine

General assembly: On the basis of pre-assembly, the overall assembly of the crane is carried out, including the final installation of the main beam, end beam, lifting mechanism, walking mechanism, etc.

Commissioning and testing

Under dynamic conditions, the operating performance of the crane is tested, including the testing of lifting, walking, steering and other functions. The overall size of the assembled bridge crane is checked to ensure that all dimensions meet the design requirements.

Spraying and anti-corrosion treatment

Surface treatment Rust removal: Rust removal on the surface of the crane, common methods include sandblasting, pickling, etc. Primer spraying: Spray anti-corrosion primer on the treated surface to prevent metal oxidation and corrosion. Topcoat spraying Color spraying: Spray topcoat according to customer requirements or industry standards to give the crane a protective and decorative effect. Marking: After spraying, mark the crane's identification information in accordance with the specifications, such as model, rated load, etc.

Factory and installation

Packaging and transportation

Packaging protection: Protectively package the key components of the crane to prevent damage during transportation. Transportation arrangement: According to the equipment size and transportation conditions, select a suitable transportation method to transport the crane to the customer's site.

Acceptance and delivery

Customer acceptance

On-site acceptance: The customer conducts on-site acceptance of the crane according to the contract requirements and technical specifications to check the performance and quality of the equipment.

Problem rectification: If any problems are found, the manufacturer needs to rectify them in time to ensure that the equipment fully meets the customer's requirements. Delivery and use Operation training: The manufacturer usually trains the customer's operators to ensure that they can operate the crane correctly and safely.

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