30 Ton Motor Driven Overhead Crane

 

A 30-ton motor-driven overhead crane is a heavy-duty lifting machine designed for industrial applications, capable of lifting and moving loads weighing up to 30 tons. It is commonly used in factories, warehouses, steel plants, power stations, shipyards, and other environments where heavy objects need to be transported horizontally over a specific area.

Key Features:

Capacity: Rated for loads up to 30 tons.

Motor-Driven: Powered by electric motors for both lifting and horizontal movement, ensuring smooth and controlled operations.

Bridge Structure: Consists of a robust horizontal bridge supported by end trucks that ride along elevated rails, allowing the crane to move along the length of the building or facility.

Hoist Mechanism: The hoist, equipped with a hook or other attachment, is mounted on a trolley that moves along the bridge, enabling precise positioning of the load.

Dual-Girder or Single-Girder Design:

Single-Girder: Has one main girder, typically used for lighter-duty tasks or lower lifting heights.

Double-Girder: Features two parallel girders, offering higher load capacity, greater stability, and the ability to lift loads to higher heights.

Control Systems: Can be operated through a control cabin, pendant control, or remote control, depending on the level of precision and safety required.

Safety Features: Equipped with emergency stop mechanisms, overload protection, limit switches, and braking systems to ensure the safety of operators and equipment.

Applications:

Manufacturing: For moving large machinery or components across production areas.

Steel and Metal Industries: For handling heavy steel coils, beams, or other bulky materials.

Shipbuilding: For lifting and placing ship components.

Logistics and Warehousing: For moving large cargo or containers within storage facilities.

This type of crane is essential for heavy lifting and transport in environments that require the movement of large, heavy objects with high precision and safety.

Core Components：PLC, Engine, Bearing, Gearbox, Motor, Gear, Pump

Place of Origin：Henan, China

Warranty：1.5 years

Weight (KG)：65000 kg

Video outgoing-inspection：Provided

Machinery Test Report：Provided

Lifting mechanism：European winch trolley

Control method：Wireless Remote Control+Cab Control

Max. Lifting Height：30 m

Lifting speed：0.5/8m/min

Traveling speed：2-20m/min

Work Duty：A5/2M

Main electrical parts：Schneider

Crane feature：High Efficiency

 

 

1.Bridge

The bridge is the horizontal structure that spans the width of the work area. It consists of one or two girders (single-girder or double-girder), which are supported by the end trucks. The bridge moves along tracks or rails installed on elevated beams in the facility.

Single Girder: A single beam supports the trolley and hoist. This is typically used for lighter-duty applications.

Double Girder: Two beams provide enhanced strength and support, allowing for heavier loads and higher lifting heights.

 

Hoist

The hoist is the main lifting mechanism of the crane. It consists of a drum, wire rope or chain, motor, and gearbox. The hoist lifts and lowers the load.

Wire Rope Hoist: Used for heavier loads, offering greater strength and durability.

Chain Hoist: Typically used for lighter loads.

 

Trolley

The trolley is mounted on the bridge and moves along the girders. It carries the hoist and allows for horizontal movement of the load across the width of the crane span. The trolley can either be top-running (on top of the girders) or under-running (suspended beneath the girders).

3.End Trucks

End trucks are located at each end of the bridge and house the wheels that enable the bridge to move along the runway rails. The wheels may be driven by electric motors, providing horizontal movement of the entire crane.

 

4.Crane travelling mechanism

1) Working principle

The crane traveling mechanism is the system that allows the crane to move horizontally across its work area. It incorporates a series of tracks, wheels, motors, and structural supports designed for extremely heavy-duty applications in the case of the largest cranes. These cranes typically use advanced technologies to ensure smooth, stable, and safe operation while carrying heavy loads across long distances.

2) Functions of the crane operating mechanism

The primary function of the traveling mechanism is to allow the crane's hoist to move horizontally along the length of the crane's bridgeThis requires robust wheels, rails, and drive systems that can handle high stress.It provides fine control of the crane's movement along its rails, ensuring smooth, controlled travel for loading, unloading, and precise positioning of materials. This is especially important when handling large, delicate, or heavy loads.In modern overhead cranes, the traveling mechanism is typically driven by electric motors that can vary the speed and direction of travel. These motors are designed to provide smooth, consistent movement over long distances, even under heavy loads.

5.Trolley travelling mechanism

1) Structural composition

Trolley frame: The trolley frame is the main structural component that supports the load and houses the various mechanisms responsible for the trolley's motion.

Travel Wheels: The travel wheels are mounted on the trolley frame and are responsible for guiding the trolley along the bridge girder or runway rails.These wheels are generally made of steel and are designed to handle the loads and the forces exerted during operation.

Drive device: The drive mechanism consists of an electric motor, gearboxes, and a system of drive shafts or coupling units.The motor typically powers the reduction gear or gearbox, which then drives the travel wheels.

2) Function of the trolley operating mechanism

The trolley traveling mechanism of a biggest overhead crane is a crucial component responsible for the movement of the trolley (the part of the crane that holds the hoisting mechanism) along the bridge or girder of the crane structure. It allows the hoisting mechanism (which lifts or lowers loads) to move horizontally across the crane's span, enabling the crane to cover a large area and transport materials efficiently.

6.Crane wheel

1) Function of wheels

The crane wheel allows the crane to move along its rail tracks. The design and materials used for the wheels ensure they can handle the extreme stress and forces exerted during operation.As the hoist lifts or lowers a load, the wheels help move the crane to the appropriate position, making it possible to shift heavy loads in any direction across the working area.The crane wheels play a role in maintaining the stability of the overhead crane while it operates. They help to evenly distribute the crane's weight across the rail tracks, reducing the risk of imbalance or tipping.

2) Design requirements

Regarding the crane wheel itself, the exact dimensions of the crane wheels on the world's largest cranes can vary depending on the design and application. However, the crane wheels on these massive overhead cranes can be enormous, often ranging from several feet in diameter (up to 8 to 10 feet) or more. These large wheels are specifically designed to support the immense weight and ensure the smooth movement of such giant structures.These wheels are engineered to be extremely durable, often made of specialized materials like high-strength steel, and designed to handle immense weights and forces during operation.

7.Crane Hook

1) The hook is usually made of high-strength alloy steel or carbon steel to ensure its strength and durability under high loads. The choice of materials should take into account fatigue resistance and wear resistance. The design of the hook is usually U-shaped or closed, which can effectively grasp and fix the material to prevent it from falling off during lifting. The surface of the hook is generally heat-treated or coated to improve its wear resistance and corrosion resistance.

2) The hook is connected to the lifting mechanism through a wire rope and directly bears the weight of the hoisted object. During the lifting process, the hook needs to withstand the gravity from the material and its dynamic load. During lifting, the hook is raised and lowered through the lifting mechanism, allowing the material to move in the vertical direction while maintaining stability to ensure safety. The main function of the hook is to safely grab and lift various materials and ensure that the material does not fall off during movement. The design of the hook allows quick and easy connection with different types of hoists (such as lifting rings, grabs, magnets, etc.), improving the flexibility of the operation.

Motor

The motor of the biggest overhead crane is typically a large, industrial-grade electric motor designed to handle the high power and torque requirements of lifting and moving heavy loads.

2) The motor converts electrical energy into mechanical energy to drive the operating mechanism of the crane. The rotation of the motor transmits power to the wheels or lifting device through the reducer to achieve the movement of the crane. Modern motors are often used in conjunction with frequency converters to achieve precise speed control and adjustment to meet the needs of different working conditions.

3) Overhead cranes used for heavy lifting (such as in shipyards, steel mills, or large factories) often have motors that can range from hundreds of horsepower (HP) to several thousand HP.Most large overhead cranes use three-phase asynchronous (induction) motors, but some might use synchronous motors for high-precision control. The motor's capacity must match the crane's lifting capacity, often reaching up to 100 tons or more.

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Sound and light alarm system & limit switch

1) Sound and light alarm system

The biggest overhead cranes in the world are often used in heavy industries such as shipbuilding, steel manufacturing, and large-scale construction. These cranes, due to their enormous size and complexity, require robust safety systems, including sound and light alarms, to ensure safe operation and prevent accidents.

Sound Alarms : Overhead cranes often use horn or siren-based sound alarms that emit loud, attention-grabbing sounds

The sound alarms are designed to be heard over long distances, often reaching 100 decibels or higher, and they will typically last until the issue is resolved or acknowledged.

Light Alarms (Visual Warnings): The crane may be equipped with a variety of light systems for visual signaling.The crane might be moving in a high-risk zone, so lights may flash to notify nearby personnel.

2) Limit switch

A limit switch on an overhead crane is a crucial safety component used to prevent over-travel or overloading of the crane's mechanisms. It ensures that the crane does not exceed its physical operating limits, protecting both the equipment and personnel from damage or injury. The switch typically works by interrupting the electrical circuit when the crane reaches the end of its travel range, either vertically or horizontally.

In the case of the largest cranes, like the one at the Port of Rotterdam or others used in heavy-duty applications, limit switches are part of an intricate safety system that includes:End-of-travel limit switches: These prevent the crane hook from going too far in any direction, ensuring it doesn't collide with the end stops or other parts of the structure.

Overload limit switches: These detect if the crane is lifting more than its rated capacity and will trigger safety protocols, like stopping the crane from further movement or giving an alarm.

Positioning limit switches: These are used in conjunction with other sensors to precisely control the positioning of the crane's components.

10.Safety Devices

1) Overload protection device: Load Moment Indicator monitors the crane's lifting capacity and warns the operator if the load is approaching or exceeding the maximum weight the crane can safely lift.Overload Limiters devices automatically stop the crane from lifting beyond its rated capacity, preventing damage to the crane and ensuring safety.

2) Anti-Sway and Anti-Tilt Mechanisms: Sway Prevention Systems help to reduce the swinging of the load (known as load sway) during lifting and lowering operations, providing smoother control and preventing accidents caused by sudden movements.Tilt Control Systems prevents tilting of the load or crane structure by maintaining proper balance and orientation of the load.

3) Emergency Stop System:Emergency Stop Buttons are strategically placed throughout the crane, the emergency stop buttons can immediately halt all crane movements in case of an emergency, ensuring a quick response to hazardous situations. In the event of a malfunction or sudden power loss, the crane's emergency braking system ensures the crane can come to a controlled stop.

4) Proximity Sensors sensors detect obstacles or personnel in the crane's path and can alert the operator to prevent collisions.This software monitors the crane's movement and ensures it doesn't collide with nearby equipment, structures, or other cranes.

5) Warning Systems: When the crane is in operation, it may have warning lights or sirens that alert surrounding personnel of potential hazards.Cabin Warning Signals could include flashing lights, horns, or buzzers that notify the crane operator of any unsafe conditions or alerts from the load moment indicator or other systems.

11.Control Mode

Operator Cabin: The crane has an operator's cabin located at a height for good visibility. The operator uses a combination of joysticks, buttons, and possibly touch screens to control the crane's movements.

PLC (Programmable Logic Controller): These cranes are generally controlled by a sophisticated PLC system that manages the various operations such as lifting, lowering, swinging, and trolley movements.The PLC processes input from the operator, sensors, and safety systems to ensure smooth operation.

Remote Control: In some cases, cranes of this scale can also be operated via a remote control system, where operators can oversee operations from a safe distance or even from the ground.

Safety Systems: To avoid accidents due to overloading, misalignment, or environmental factors (like wind), there are multiple redundant safety systems in place, including load cells, wind speed detectors, and emergency stop functions.

Automatic Positioning Systems: For high precision, automatic positioning systems help place loads with high accuracy. These systems use sensors and GPS technology for real-time adjustments.

Load Monitoring: The crane's load sensors track the weight of the lifted object in real-time to prevent overload. Overload protection systems automatically halt operations if the load exceeds safe limits.

Variable Frequency Drives (VFDs): These drives are used to control the speed of the crane's motors. They provide smooth acceleration and deceleration, which is crucial for preventing jerky movements, especially when lifting massive loads.

Computer-Aided Control: Modern cranes are often integrated with computer systems that provide diagnostic data, performance statistics, and help to plan lifting operations more efficiently.

Safety and Monitoring Software: The crane's control system is often integrated with software that monitors the health of the crane and its components. This software provides data on things like the crane's structural integrity, motor performance, and other critical metrics.

Wind and Environmental Considerations: Given the size of the Taisun crane and the extreme weights it lifts, weather conditions-particularly wind-are closely monitored. The crane has sensors and control algorithms that determine whether it is safe to operate under specific weather conditions.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

12.Sketch

 

Main technical

 

 

 

 

A 30-ton motor-driven overhead crane offers several key advantages that make it highly beneficial in heavy-duty industrial applications. Here are the main advantages:

1. High Lifting Capacity

With the ability to lift up to 30 tons, this crane is ideal for industries that handle large, heavy materials, such as steel manufacturing, shipbuilding, construction, and power generation.

2. Efficient Material Handling

The crane can cover large areas, both horizontally and vertically, allowing for quick and efficient transport of materials across the workspace. It reduces the need for manual labor and speeds up processes, increasing overall productivity.

3. Precision and Control

Equipped with electric motors and advanced control systems, these cranes offer smooth and precise movement, enabling operators to position heavy loads accurately. Variable-speed controls allow fine-tuned handling to match the complexity of different tasks.

4. Reduced Labor Costs

By automating the lifting and transport of heavy objects, motor-driven overhead cranes significantly reduce the need for manual lifting or the use of multiple pieces of machinery, leading to lower labor costs.

5. Improved Safety

Overhead cranes reduce the risk of accidents related to manual lifting, forklift operations, and ground-level transport. The crane is operated from a safe distance (either remotely or from a control cabin), keeping operators out of harm's way. Safety features such as limit switches, overload protection, and emergency brakes further enhance operational safety.

6. Space Efficiency

These cranes are mounted overhead on rails, freeing up valuable floor space in a factory or warehouse. This allows for better utilization of the workspace and helps avoid obstacles or congestion on the ground.

7. Customizable for Specific Needs

Overhead cranes can be tailored to specific industrial requirements. Depending on the workspace, they can be designed as single-girder or double-girder systems, with varying spans, heights, and lifting speeds to meet the specific operational needs of the business.

8. Durability and Longevity

Motor-driven overhead cranes are built with high-quality materials and designed to withstand harsh industrial environments. This durability ensures a long service life with relatively low maintenance costs, offering an excellent return on investment.

9. Improved Workflow

These cranes enable continuous material flow, optimizing production lines by reducing bottlenecks in material handling processes. This results in a smoother and more efficient workflow.

10. Versatility in Lifting

Overhead cranes can be fitted with various attachments, such as hooks, slings, magnets, and grabs, to accommodate different types of loads (from raw materials to finished products). This makes them versatile for various industries, including metalworking, automotive, aerospace, and logistics.

11. Reduced Wear and Tear on Other Equipment

By using a crane to handle heavy loads, other equipment such as forklifts or conveyor belts experience less wear and tear, extending their life span and reducing maintenance costs.

12. Energy Efficiency

Modern motor-driven cranes are designed with energy-efficient motors and regenerative braking systems, which reduce energy consumption during operations. This can lead to significant cost savings over time, especially in large facilities with frequent crane use.

13. Flexibility of Control Options

Operators can control the crane via pendant controls, radio remote controls, or from an operator cabin. Remote control operation allows the crane to be used in hazardous environments or tight spaces without putting the operator at risk.

14. Enhanced Automation Options

Advanced motor-driven cranes can be equipped with automation and programmable systems to perform repetitive tasks autonomously or semi-autonomously, improving operational consistency and freeing operators for other tasks.

15. Reduction of Ground Traffic Hazards

Since the crane operates from overhead, it helps reduce ground-level congestion caused by other machinery, such as forklifts and trucks. This reduces the likelihood of accidents and improves overall safety in the workplace.

In summary, a 30-ton motor-driven overhead crane offers powerful, safe, and efficient material handling solutions, increasing productivity while reducing operational costs and risks in various industrial environments.

 

 

A 30-ton motor-driven overhead crane is widely used in various industries and applications where heavy-duty lifting and precise material handling are essential. Below are some of the key applications:

1. Manufacturing Industry

Heavy Equipment Manufacturing: Used to lift and move heavy machinery components during the assembly process.

Automotive Industry: Employed in the production of vehicles for handling large parts such as engines, frames, and other bulky automotive components.

Machinery Manufacturing: Used to move heavy machine parts and assemblies in factories that produce industrial machinery.

2. Steel and Metal Industry

Steel Mills: Handles large steel coils, slabs, beams, and raw materials like iron ore, scrap metal, and pig iron.

Foundries: Utilized for transporting molten metal in ladles, as well as finished metal products such as castings, ingots, and rods.

Metal Fabrication: Moves raw materials and large fabricated metal structures, aiding in welding, cutting, and assembling metal pieces.

3. Construction Industry

Building Materials Handling: Lifts and moves large construction materials such as steel girders, prefabricated sections, concrete panels, and other structural components.

Bridge Construction: Essential for lifting and positioning large sections of bridge structures.

Precast Concrete: Used to transport heavy precast concrete sections and columns during the construction process.

4. Shipbuilding

Ship Component Handling: Used to lift and transport large ship components such as engines, hull sections, and ship parts from assembly areas to installation sites.

Dry Docks: Assists in the assembly, repair, and maintenance of ships by lifting large sections and modules during ship construction or refurbishment.

5. Power Plants

Turbine and Generator Maintenance: Used in power plants for installing and maintaining heavy equipment like turbines, generators, and transformers.

Nuclear and Thermal Plants: Employed for moving large reactor components, fuel rods, or heavy materials in secure and safe conditions.

6. Logistics and Warehousing

Large-Scale Warehousing: Helps move heavy goods, containers, and machinery across storage facilities for efficient loading, unloading, and organization.

Port and Cargo Handling: Used in seaports to load and unload shipping containers, bulk materials, and heavy cargo from ships to storage areas or transportation vehicles.

7. Mining Industry

Mining Equipment Handling: Utilized to move and maintain large mining equipment such as drills, excavators, and trucks, and to transport extracted raw materials.

Underground Mining: Employed in lifting heavy materials, machinery, and structural components in underground mining operations.

8. Aerospace Industry

Aircraft Assembly: Used for assembling large parts of aircraft, such as fuselage sections, wings, engines, and landing gear.

Aircraft Maintenance: Helps in lifting and moving large aircraft components during repair, refurbishment, or disassembly processes.

9. Railway Industry

Rail Car Manufacturing and Maintenance: Used to lift and position rail cars, engines, and other components during production or maintenance.

Track Maintenance: Lifts heavy track sections and materials during track installation and repairs.

10. Heavy Equipment Repair Facilities

Maintenance Shops: Assists in lifting heavy machinery and parts, such as engines, gears, and frames, during repairs or maintenance work on large equipment.

11. Oil and Gas Industry

Refineries and Petrochemical Plants: Used to lift heavy equipment like reactors, heat exchangers, pipelines, and drilling equipment.

Offshore Platforms: Helps in the construction, maintenance, and loading of large equipment, including drilling rigs and offshore platforms.

12. Energy Industry

Wind Turbine Construction and Maintenance: Assists in the installation and maintenance of wind turbine components such as nacelles, towers, and blades.

Solar Panel Installations: Lifts and installs large solar panel arrays in utility-scale solar farms.

13. Paper and Pulp Industry

Paper Mill Equipment Handling: Used to transport heavy paper rolls, machinery, and materials used in the paper-making process.

14. Chemical Industry

Large Tank and Reactor Handling: Moves heavy chemical tanks, reactors, and machinery required for processing chemicals and other industrial substances.

15. Military and Defense Industry

Heavy Equipment Transport: Lifts and transports tanks, armored vehicles, and other large military equipment for maintenance or deployment.

Aircraft and Ship Maintenance: Used in military bases and naval shipyards to maintain and repair aircraft, ships, and other defense assets.

16. Food and Beverage Industry

Bulk Material Handling: Used in large-scale food processing plants to move bulk materials and heavy machinery involved in food production and packaging.

17. Waste Management and Recycling

Scrap Metal Handling: Used in recycling facilities for lifting and transporting large amounts of scrap metal, old machinery, and other recyclable materials.

18. Tunnel Boring and Infrastructure Projects

Tunnel Construction: Lifts and places heavy tunnel boring machines and infrastructure components during tunneling projects.

Infrastructure Projects: Helps in large infrastructure projects involving bridges, tunnels, and rail systems, handling heavy construction materials and components.

19. Cement and Aggregate Industry

Cement Plant Equipment: Used to lift heavy materials and equipment, such as crushers, mills, and conveyors, in cement manufacturing plants.

In summary, a 30-ton motor-driven overhead crane is a versatile tool used in a variety of industries, providing powerful lifting solutions for heavy materials, machinery, and components, ensuring efficient, safe, and precise handling in diverse operational environments.

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%.