5t Overhead Crane Grab

 

A 5-ton overhead grab crane is a type of overhead crane specifically designed to handle bulk materials using a grab (or clamshell) bucket attachment. This crane has a lifting capacity of 5 tons (or 5,000 kg) and is commonly used in industries where bulk materials like sand, gravel, coal, scrap metal, or grain need to be moved, lifted, or loaded.

Key Features:

Grab Mechanism: The crane uses a grab bucket, typically operated by hydraulic or mechanical means, to scoop up loose materials and release them at the desired location. The grab is attached to the hoist of the crane.

Overhead Structure: The crane is mounted on a bridge that moves along a runway system, allowing for movement across the entire workspace. The hoist and grab move along the bridge for precise placement of the materials.

5-Ton Capacity: It is designed to handle loads up to 5 tons, making it suitable for medium-duty applications in industries like waste management, ports, and mining.

Automated or Manual Operation: The crane can be operated manually through a control panel or remotely with automation for efficient bulk material handling.

Warranty：1 Year

Weight (KG):1000 kg

Feature：Bridge Crane

Condition：New

Rated Lifting Moment：100kn

Max. Lifting Load：32t

Span：3-28m

Control method：Remote control or Cabin control

Work Duty：A3-A8

Color:Yellow .Red . Orange or customized

Lifting mechanism:electric hoist

 

 

Bridge (Girder)

The horizontal structure that spans across the work area. It carries the hoist and allows for lateral movement. The bridge can be single or double girder, depending on the application and load capacity.

 

 

Hoist

The hoist is the lifting mechanism that attaches to the load via hooks, slings, or other lifting devices. It can be either manually operated, electric, or pneumatic, depending on the crane's application.

 

Trolley

The trolley travels along the bridge girder and carries the hoist. It enables horizontal movement across the width of the crane span, moving the load side to side.

 

End Trucks

Located at both ends of the bridge, the end trucks house wheels that allow the bridge to move along the runway tracks. They connect the bridge to the runway system.

 

Control System

The control system manages the crane's movements, typically using a wired or wireless control panel. Operators control the movement of the hoist, trolley, and bridge to lift and position loads accurately.

 

Power Supply

Power is delivered to the crane's hoist and trolley either through festoon cables, conductor bars, or cable reels, providing electricity for the crane's operation.

 

Bumpers and Stops

These safety features are installed at the ends of the runway and the trolley's travel path to prevent over-travel or collisions.

 

Braking System

This system ensures safe and controlled lifting and lowering of the load. It also prevents the crane or trolley from moving unexpectedly.

 

Crane wheel

1) Wheel construction

Wheel material: Wheels are usually made of high-strength steel to withstand the heavy load of the crane. Steel wheels have high wear resistance and load-bearing capacity.

Wheel structure: Wheels are generally designed as round or ring-shaped with inner grooves to adapt to the shape of the track and provide a stable contact surface. The inner hole design of the wheel must also match the axle to ensure that the wheel can be installed correctly.

2) Wheel type

Drive wheel: The drive wheel is the main power wheel of the trolley running mechanism, driven by an electric motor, and drives the trolley to move on the track through a transmission system. The drive wheel usually has high wear resistance and load-bearing capacity.

Passive wheel: The passive wheel is used to support the trolley and guide its direction of movement, and does not directly transmit power. The design requirements of the passive wheel are equally high to ensure the stable operation of the trolley.

Crane hook

The hook of a double-beam bridge crane is an important component of the crane system. It can grab, lift and carry materials through its special design and structure. The material, structure, installation and maintenance of the hook need special attention to ensure the efficiency and safety of the crane. Regular inspection and maintenance are the key to ensure the long-term stable operation of the hook.

1) Regular inspection: The hook needs to be regularly inspected for structural integrity, including the wear of the hook body, bearings, locks and other components. The inspection also includes whether the hook body has cracks, deformation and other problems.

2) Lubrication and maintenance: For the rotating part of the hook, regular lubrication and maintenance are required to reduce friction and wear and extend the service life.

3)Replacement and repair: When the hook is severely worn, damaged or has other safety hazards, it needs to be replaced or repaired in time. The maintenance and replacement of the hook needs to be carried out in accordance with the manufacturer's regulations and standards.

Motor

Maintenance of the motor

1) Regular inspection: Regularly check the operating status of the motor, including the temperature, vibration, noise, etc. of the motor. Check the insulation resistance and winding status of the motor to ensure its normal operation.

2) Cleaning and lubrication: Keep the motor clean and regularly clean the dust and debris inside the motor. Lubricate the bearings and other moving parts to reduce friction and wear.

3) Replacement and repair: When the motor fails, it needs to be repaired or replaced in time. The failure may include overheating, abnormal vibration, noise and other problems of the motor.

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Sound and light alarm system & limit switch

1. Sound and light alarm system

1) Warning function: The main function of the sound and light alarm system is to alert the operator and surrounding personnel to the operating status of the crane. It can emit sound alarms and flashing light signals to attract attention.

2) Safety reminder: The system is usually used to remind the operator of abnormal conditions of the crane, such as overload, collision warning, or reaching the limit position.

2. Limit switch

1) Position control: Limit switches are used to detect the operating position of each moving mechanism of the crane to prevent the crane from exceeding the design range during operation. They help protect the mechanical structure and load safety of the crane.

2) Automatic stop: When the crane or its accessories approach or reach the set limit position, the limit switch will trigger an automatic stop to prevent further movement to avoid damage.

 

Safety Devices

1) Overload protection device: The overload protection device is used to monitor the load of the crane to prevent the load from exceeding the design load capacity of the equipment. When the load exceeds the safety range, the device will send out an alarm signal and automatically stop lifting or other movements to protect the safety of the equipment and load.

2) Emergency stop device: In an emergency, the operator can immediately stop all movements of the crane through the emergency stop device to prevent accidents. Usually set on the operation panel and key positions for quick triggering.

3) Safety belts and guardrails: Safety belts and guardrails are used to protect operators and maintenance personnel from accidental falls during operation or maintenance.

4) Braking system: The braking system is used to control the moving speed and stop position of the crane to ensure smooth operation. In the event of a fault or emergency, additional braking force is provided.

5) Electrical protection device: Prevent short circuits in the electrical system and protect motors and electrical components. Prevent electrical systems from failing under overload conditions.

 

Control Mode

1) Manual control: Manual control is the most traditional control method, which controls various functions of the crane, such as lifting, walking and trolley operation, through buttons, switches and joysticks on the operation panel. It is simple to operate and suitable for environments that do not require complex operations.

2) Wireless remote control: The wireless remote control system allows the operator to operate near or far away from the crane, and transmits control instructions through wireless signals. Improves operational flexibility and comfort, suitable for scenarios that require operators to move and observe.

3) Automatic control: The automatic control system automatically performs crane operations based on preset programs and parameters without human intervention. Improves operational accuracy and is suitable for repetitive work or scenarios that require high precision.

4) Computer control: Use computers for comprehensive control and monitoring, and operate and monitor through a graphical interface. Able to record and analyze operational data and provide decision support.

 

Sketch

Main technical data

 

A 5-ton overhead grab crane offers several advantages, particularly in industries where bulk material handling is essential. Here are the key benefits:

1. Efficient Bulk Material Handling

The grab (clamshell) bucket allows the crane to handle loose, bulk materials like sand, gravel, coal, grain, or scrap metal with ease. This capability significantly improves the efficiency of loading, unloading, and transporting large volumes of material.

2. High Productivity

With the ability to quickly scoop and release large quantities of material, these cranes increase operational speed and throughput, making them ideal for fast-paced environments like ports, recycling centers, and bulk storage facilities.

3. Precise Control

The crane offers precise control over the position and movement of the grab bucket, allowing for accurate loading and unloading of materials. This precision reduces material wastage and improves handling efficiency.

4. Reduced Manual Labor

A 5-ton grab crane automates the process of handling bulk materials, reducing the need for manual labor and minimizing worker fatigue. This leads to safer working conditions and lower operational costs.

5. Versatility

The crane can handle various types of bulk materials, making it versatile for different industries such as mining, construction, waste management, and industrial processing. It can be equipped with different types of grabs (e.g., mechanical, hydraulic, or electric) depending on the specific material being handled.

6. Space Efficiency

Overhead grab cranes utilize overhead space, leaving the ground area free for other operations. This optimizes workspace utilization and is particularly beneficial in congested industrial or warehouse environments.

7. Increased Safety

With features such as overload protection, braking systems, and remote control options, 5-ton grab cranes offer enhanced safety during material handling. They reduce the risk of accidents related to manual handling of heavy or bulk materials.

8. Reduced Downtime

These cranes are designed for durability and continuous use, reducing the need for frequent maintenance and downtime. This leads to improved operational efficiency and minimizes interruptions in material handling processes.

9. Adaptability to Harsh Environments

Freestanding or ceiling-mounted 5-ton grab cranes are well-suited for outdoor and indoor environments where traditional methods may not be efficient. Their robust design can handle extreme conditions like dust, moisture, and varying temperatures, especially in industries like mining or ports.

10. Customizable for Specific Applications

The crane's design can be customized to meet specific operational requirements, such as different grab sizes or bucket types for different materials, enhancing the crane's flexibility and adaptability.

In summary, a 5-ton overhead grab crane improves material handling efficiency, enhances safety, and reduces manual labor while being highly versatile for different industries that deal with bulk materials.

 

 

A 5-ton overhead grab crane is widely used across various industries that handle bulk materials. Here are some of the common applications where this crane is highly effective:

1. Ports and Shipping Terminals

Used for loading and unloading ships, barges, and trucks with bulk materials such as coal, sand, gravel, grain, or minerals. The grab crane efficiently handles loose cargo, increasing throughput in high-volume port operations.

2. Waste Management and Recycling

In waste processing facilities and recycling centers, grab cranes are used to lift and transport waste materials, scrap metal, or recyclables. They help in sorting, loading, and moving large amounts of waste efficiently.

3. Mining and Quarries

Mining operations use grab cranes to handle bulk materials like ore, coal, or crushed rock. In quarries, grab cranes assist in loading materials for transport or processing.

4. Construction Sites

Grab cranes are used to move and handle construction materials like sand, gravel, and concrete aggregates. They help in the efficient loading of materials into trucks or distributing them on the construction site.

5. Steel Mills and Foundries

In steel mills, grab cranes are used to transport scrap metal, steel billets, or other raw materials that feed into the production process. They are particularly useful in scrap handling areas for recycling and material preparation.

6. Cement and Aggregate Plants

These cranes are employed to handle and transport raw materials like limestone, coal, or clinker. They facilitate the material loading and unloading process in cement plants, contributing to smooth production operations.

7. Fertilizer and Chemical Plants

In fertilizer and chemical production facilities, grab cranes handle bulk raw materials like phosphates, sulfur, or other chemicals, aiding in the production and packaging processes.

8. Power Plants

In coal-fired power plants, grab cranes are used to handle coal and other bulk materials for fueling the power generation process. They provide efficient loading and unloading of fuel supplies, maintaining continuous plant operations.

9. Agriculture and Grain Handling

Grain elevators and agricultural processing plants use grab cranes to handle large quantities of grain, seeds, or other agricultural products. These cranes improve efficiency in loading, storing, and transporting bulk crops.

10. Bulk Material Storage Facilities

In bulk material storage yards or silos, grab cranes move large volumes of materials between storage areas and trucks, trains, or conveyors for efficient material handling and distribution.

11. Foundries and Metal Recycling Facilities

Grab cranes are used in foundries to handle scrap metal and other materials used in metal melting and casting processes. They also transport molten metal or slag for processing and disposal.

12. Water Treatment Plants

In water treatment facilities, grab cranes may be used to remove sludge, sediments, or other waste materials from settling tanks and reservoirs, aiding in the treatment and cleaning process.

In these industries, the 5-ton overhead grab crane provides efficient and precise handling of bulk materials, contributing to increased productivity and improved safety in material-handling operations.

 

 

Demand analysis and design: Understand the specific needs of customers, including the working environment, load requirements, span, lifting height, etc. of the crane. Determine technical specifications and performance parameters according to the needs and develop a preliminary design plan. According to the preliminary design, carry out detailed structural design and component design, and draw detailed engineering drawings.

Material procurement: Select reliable suppliers and evaluate them to ensure the quality and delivery time of the materials. Sign a procurement contract with the supplier to clarify the material specifications, quantity, price and delivery time.

Manufacturing and processing: Cut, bend, weld and other processing of steel to manufacture major components such as bridges, end beams, and support structures. Carry out precision processing of components to ensure that the size and shape of each part meet the design requirements. Install motors, reducers and drive systems to ensure the normal operation of the crane's power system. Install electrical equipment such as control panels, sensors, limit switches, and complete the wiring and connection of the electrical system. Weld and fix each component to ensure the stability of the structure.

Testing and debugging: Check the structural connections and welding parts of the crane to ensure that there are no defects. Test the connection and function of the electrical system to ensure that each electrical component is working properly. Adjust the control parameters according to the test results to optimize the operating performance. Deal with problems found during testing to ensure that the equipment meets the design requirements.

5. Acceptance and delivery: Conduct final quality inspection to ensure that all components and systems meet design standards and quality requirements. Conduct final performance tests to verify the functions and safety performance of the crane. Deliver the completed crane to the customer for on-site installation and commissioning. Provide operation training to customers, explaining the use of the equipment and maintenance knowledge.

 

 

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%.

 

 

 

 

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