Span 25m Overhead Single Crane

A 25-meter span overhead single crane is a type of overhead (or bridge) crane commonly used in industrial settings for lifting and moving heavy loads across a fixed horizontal span. The crane consists of several key components:

Single Girder: The crane has a single girder, which is the horizontal beam running along the span (25 meters in this case). This girder supports the hoisting mechanism and trolley, which move along the length of the girder.

Hoist: Attached to the trolley, the hoist is responsible for lifting and lowering loads. It can be either electric or manual, depending on the application.

Trolley: This mechanism moves back and forth across the girder, allowing the hoist to position loads across the span.

End Trucks: These are the mechanisms at each end of the girder that ride along the runway beams (rails or tracks), allowing the entire crane to move along the length of the facility or work area.

Runway Beams: The crane travels along these beams or rails, which are mounted to the ceiling or structural supports.

Control System: Modern cranes often have remote control or cabin control systems, enabling the operator to manage load positioning safely and efficiently.

Applications:

Used in manufacturing, warehouses, construction, and assembly lines for handling heavy materials such as steel beams, containers, or machinery.

It offers precision, stability, and safety in load handling over large distances, making it ideal for heavy-duty operations.

This type of crane provides excellent coverage of the work area and can be customized to meet specific capacity and operational needs.

Core Components：Engine

Place of Origin：Henan, China

Warranty ：1 Year

Weight (KG)：500 kg

Video outgoing-inspection：Provided

Machinery Test Report：Provided

Max. Lifting Height：30 meter

Span：7.5~40m

Color：Customized Color Acceptable

Voltage：220v~660v 50hz/60hz

Mode of operation：floor control & cab control

Lifting speed：3 to 12mmin customizable

Lifting capacity：3~500t

The speed of the cart：6 to 60m/min can be customized

Car speed ：3 to 40m/min can be customized

 

 

1.Single Girder

The single girder is the horizontal beam running across the span (25 meters in this case).

It supports the trolley and hoist mechanism that move along the girder.

End Trucks

Located at both ends of the girder, these trucks ride along the runway beams.

They contain wheels and a drive mechanism, enabling the crane to move along the length of the work area or facility.

Hoist

The hoist is responsible for lifting and lowering the load.

It can be electric or manual and is attached to the trolley, allowing vertical movement.

The hoist is equipped with wire rope or chain to handle heavy loads.

3.End carriage

The end carriage of a freestanding bridge crane refers to the structural component that supports and guides the bridge beam along the crane runway. It is a critical part of the crane's design, enabling smooth horizontal movement of the bridge and facilitating load lifting and positioning operations.

End carriages are equipped with wheels that run along the runway beams.Wheels may be steel or polyurethane-coated, depending on the application and the need to reduce wear or noise.End carriages attach to the main bridge beam, either bolted or welded, depending on the crane's specifications.

In a freestanding bridge crane, the end carriage plays a vital role in ensuring the bridge beam moves efficiently along the runway, which is often supported by independent columns. The system does not rely on a building structure, making it ideal for temporary setups, warehouses, or spaces where overhead support is unavailable.

 

4.Crane travelling mechanism

The crane traveling mechanism of a freestanding bridge crane refers to the system that enables the crane to move along its runway rails. It ensures smooth, stable, and controlled motion of the crane's bridge structure across its designated working area.

Working Principle:

The motors receive electrical power through a conductor system, such as a festoon cable system or conductor bars.The motors drive the wheels through the gearboxes, moving the bridge crane along the runway rails.Motion is typically bi-directional, allowing the crane to move forward or backward as needed.Modern systems use VFDs for precise speed regulation, enabling smooth starts and stops to prevent load swing.

5.Trolley

The trolley moves horizontally along the length of the girder.

It carries the hoist and enables lateral movement across the width of the crane's span.

Trolley movement is either manual or motorized, depending on the crane design.

6.Crane wheel

The crane wheel of a freestanding bridge crane is a critical component of the crane's travel mechanism. These wheels allow the bridge crane to move along its runway or tracks, enabling smooth and precise operation.

Key Features of Crane Wheels Usually made of high-strength materials such as forged or cast steel, it can withstand heavy loads and wear. It is heat-treated for durability and is not easily deformed.

Flange wheels feature a flange design to prevent derailment and maintain track alignment. The tread profile is precisely machined for smooth rolling and even weight distribution.

7.Crane Hook

A crane hook is a critical component of a freestanding bridge crane system, responsible for safely lifting and moving heavy loads.

Crane hooks are usually made of forged carbon steel or alloy steel high-strength materials to ensure durability and resistance to wear. The hook has a wide throat design that can be easily locked onto a variety of slings or chains. This shape ensures that the load remains stable during lifting.

The load capacity of the crane hook should match the rated capacity of the crane, which can range from a few tons to hundreds of tons, depending on the specific application.

Motor

A motor for a freestanding bridge crane is a key component responsible for powering the movement of the crane's bridge, trolley, or hoist. Depending on the crane's configuration and purpose, several types of motors may be used.

Hoist Motor：Powers the hoist mechanism, enabling the lifting and lowering of loads.Typically a three-phase electric motor for industrial use, ensuring high torque and efficiency.Variable Frequency Drives (VFDs) are often added to allow smooth speed control and prevent abrupt motions.

Trolley Motor：Drives the trolley that moves horizontally along the bridge.Typically a geared motor or direct drive motor, depending on the load and speed requirements.Low-maintenance options like AC induction motors are common.

Bridge Drive Motor：Responsible for moving the entire bridge along the runway beams.Generally uses a synchronous motor or AC motor with a gearbox for precise movement.

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Control System

The control system allows the operator to control the crane's movements. It may include:

Pendant Control: A control pendant attached to the crane, allowing manual operation from the ground.

Wireless Remote Control: Provides the operator freedom to control the crane from a safe distance.

Operator Cabin: In larger cranes, a cabin may be provided for the operator to control the crane.

10.Safety Devices

Crane Travel Limiters: These devices limit the movement of the crane bridge and the trolley to prevent them from traveling beyond the safe operating zone, reducing the risk of collisions or tipping.

Safety Sensors and Cameras: Modern cranes may be equipped with sensors and cameras to detect obstacles or personnel in the crane's path, automatically stopping movement if there is a risk of collision.

Hoist Motor Brakes: These brakes are essential for holding the load securely and preventing the load from falling when the crane is not in motion.

Horn or Alarm System: Audible warning devices can alert nearby personnel when the crane is in operation or about to move, improving safety in busy areas.

Load Weighing Systems: These systems monitor the weight of the load being lifted, providing real-time data to the operator to ensure safe lifting practices.

Guardrails and Safety Barriers: Some crane systems are equipped with guardrails to prevent workers from getting too close to dangerous areas, such as the path of the crane or near lifting equipment.

Crane Inspections and Maintenance Devices: Regular inspection devices ensure that all mechanical parts, including ropes, pulleys, and gears, are in good condition to prevent failures during operation.

 

 

11.Control Mode

Pendant Control：The operator uses a handheld pendant or remote control to operate the crane. The pendant typically has buttons to control the movement of the crane, such as hoisting, lowering, traveling (bridge movement), and trolley movement.

Radio Remote Control: A wireless control system that allows the operator to control the crane from a distance, typically using a portable remote with joysticks and buttons.

Cab Control: The operator is positioned in a cabin or operator's seat fixed to the crane. The control is typically done using joysticks or buttons located inside the cabin.

Automated/Automatic Control: In highly automated settings, the crane might be controlled by pre-programmed logic or via a centralized control system. The crane can operate with minimal human intervention, performing repetitive or routine tasks.

Fixed Control Station: A control panel is mounted at a fixed location, usually on the floor or on a pedestal near the crane. The operator manually operates the crane from this station.

Sketch

Main technical

 

 

A 25-meter span overhead single crane offers several advantages, especially in industrial and heavy-duty applications. Below are the key benefits:

1. Efficient Material Handling

It allows easy transportation of heavy loads across large distances (25 meters in span), improving workflow and efficiency in manufacturing, warehouses, and construction sites.

It reduces the need for manual labor and forklifts, speeding up processes and reducing strain on workers.

2. Space Optimization

Overhead cranes operate at an elevated level, freeing up floor space and avoiding interference with ground-level equipment or vehicles.

This makes it easier to optimize the layout of the workspace, enabling better utilization of floor space for machinery and storage.

3. Heavy Load Capacity

Despite having a single girder, overhead single cranes can lift significant loads, depending on the hoist and crane design.

They are well-suited for lifting heavy machinery, raw materials, or containers, increasing overall productivity.

4. Versatility and Customization

These cranes can be customized with various hoists, trolleys, and control systems to suit different industrial needs.

They can handle a wide range of materials and products, from delicate components to large, heavy objects.

5. Cost-Effectiveness

A single girder design is more cost-effective than a double girder crane because it requires fewer materials and a simpler structure.

Lower installation and maintenance costs make it a more budget-friendly solution for businesses that require heavy-lifting capabilities.

6. Safety and Reliability

Overhead cranes are equipped with advanced safety features such as limit switches, overload protection, and emergency stop functions to prevent accidents and ensure safe operation.

They reduce the risk of accidents associated with forklifts or manual handling of heavy loads.

7. Precision and Control

Modern overhead cranes offer smooth and precise load handling, allowing for fine control over the positioning of heavy objects.

Trolleys and hoists can be operated with precision using remote control systems, enabling accurate placement of loads in specific locations.

8. Improved Ergonomics

Since the crane handles the heavy lifting, it reduces the physical strain on workers, leading to improved ergonomics and fewer injuries related to manual material handling.

Operators can control the crane from a safe distance using pendant or wireless controls, further enhancing workplace safety.

9. Reduced Maintenance Needs

Single girder overhead cranes generally have fewer mechanical components compared to double girder cranes, leading to lower maintenance requirements.

Fewer moving parts mean less wear and tear, resulting in longer operational life and reduced downtime.

10. Wide Range of Applications

The versatility of these cranes allows them to be used in various industries, such as manufacturing, shipyards, steel mills, automotive, and construction.

They are suitable for moving raw materials, heavy equipment, or even assembly line components in production facilities.

In summary, a 25-meter span overhead single crane is a cost-effective, efficient, and reliable solution for moving heavy loads over large distances in industrial environments. Its space-saving design, ease of use, and safety features make it a preferred choice in many applications.

 

 

A 25-meter span overhead single crane is widely used across various industries due to its ability to handle heavy loads efficiently over large spans. Here are some common applications:

1. Manufacturing Plants

Used for handling raw materials, components, and finished products in assembly lines and production processes.

Moves large machinery, parts, and assemblies in heavy manufacturing industries like automotive, aerospace, and machinery manufacturing.

2. Warehousing and Logistics

Ideal for loading, unloading, and transporting goods in warehouses and distribution centers.

Lifts and moves heavy or bulky items, reducing the need for forklifts and manual labor, and maximizing warehouse space.

3. Steel Mills and Metal Fabrication

Used to lift and move heavy steel plates, beams, pipes, and other metal materials.

Crucial in handling hot metal during production processes and transporting steel products to different areas of the facility.

4. Construction Sites

Overhead cranes are employed for lifting and placing large construction materials like steel girders, concrete panels, and heavy machinery.

They are useful in bridge construction, large building projects, and infrastructure developments where precision and heavy lifting are required.

5. Shipbuilding and Shipyards

Used for moving large ship components, engines, and other heavy materials across different areas in shipbuilding.

Helps in the assembly of large vessel parts and transportation of materials in shipyards.

6. Power Plants

Overhead cranes are used in power plants for handling large turbines, generators, and other equipment during maintenance or installation.

They play a critical role in positioning and transporting heavy components in thermal, hydro, and nuclear power plants.

7. Automotive Industry

Used to lift heavy vehicle parts, engines, and chassis during the assembly and manufacturing process.

Helps in the movement of large components on production lines, improving workflow efficiency.

8. Mining Industry

Overhead cranes assist in moving heavy mining equipment, machinery, and minerals.

They are used in workshops to repair and maintain large mining machines and equipment.

9. Paper and Pulp Industry

Helps in handling large rolls of paper, wood, and other raw materials used in the production of paper products.

Used in paper mills to move raw materials and finished products, ensuring smooth production and storage.

10. Aerospace Industry

Facilitates the precise lifting and movement of large aircraft components such as wings, fuselages, and engines during the assembly process.

Provides accurate and safe transportation of delicate parts, ensuring efficiency in aircraft manufacturing and maintenance.

11. Chemical and Petrochemical Plants

Used for lifting and transporting heavy equipment like reactors, pumps, and vessels.

Assists in the installation, maintenance, and movement of machinery in facilities that produce chemicals, oil, and gas.

12. Wind Turbine and Renewable Energy Sector

Used to lift and position large components like turbine blades, generators, and towers during the assembly and installation of wind turbines.

Plays a critical role in the renewable energy industry, especially for heavy load handling during the construction of wind farms and solar panel setups.

13. Railway and Locomotive Industry

Employed for handling heavy rail components, such as locomotives, bogies, and rails.

Helps in lifting and positioning railway equipment during assembly and maintenance in railway workshops.

In summary, a 25-meter span overhead single crane is versatile and essential in various industries where heavy lifting, material handling, and precise placement of loads are required. It improves operational efficiency, enhances safety, and helps optimize the use of space in industrial facilities.

 

 

1. Design and Engineering

Specification: The first step is determining the specific requirements for the crane, including the load capacity, span, lifting height, and type of service. This involves coordination between the customer and engineers.

Design: Structural engineers create detailed designs for the crane structure, including the bridge, runway, trolley, hoist, and other components.

Safety and Compliance: Ensure the design complies with relevant standards and regulations (e.g., ANSI, ISO, or other local standards).

2. Material Selection and Procurement

Steel: The main material for crane construction is high-strength steel. Components like beams, girders, and columns are sourced or fabricated from steel plates and profiles.

Hoisting Equipment: Hoists, motors, wheels, and other specialized parts are sourced from suppliers or fabricated in-house.

Other Components: Electrical wiring, control panels, brakes, and safety equipment are also procured.

3. Fabrication of Structural Components

Beam and Girder Fabrication: The crane's bridge consists of main beams (often I-beams or box girders) that support the load. These are cut, welded, and assembled.

Columns and Supports: Vertical support columns or towers are fabricated and welded, ensuring they meet the required strength for the load-bearing capacity.

Runway Rails: Runway beams or rails are prepared to guide the crane along the structure.

4. Assembly

Bridge Assembly: The crane bridge is assembled by connecting the beams and girders. This can be done using welding or bolting.

Trolley and Hoist Installation: The trolley system, which moves along the bridge, is equipped with the hoisting mechanism. The hoist, which includes a motor, wire rope, and other parts, is installed onto the trolley.

Wheel Assembly: The wheels that allow the crane to move along the runway are mounted on the bridge and trolley.

5. Electrical Installation

Wiring and Controls: Electrical systems are installed, including wiring for the hoist, motors, controls, and safety systems. This includes the connection to the crane's power supply.

Control Panel: The operator control panel is installed, allowing the crane to be operated remotely or from a fixed station.

Safety Features: Safety systems such as overload protection, limit switches, emergency stop, and other features are wired into 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%.