50 Tons Gantry Crane Grab Bucket
Product Introduction
50 Tons Gantry Crane with Grab Bucket Introduction
A 50-ton gantry crane with grab bucket is a heavy-duty material-handling machine designed for bulk cargo loading, unloading, stacking, and transferring. Equipped with an electric or hydraulic grab bucket, the crane performs high-efficiency operations in ports, power plants, steel mills, and waste-handling facilities.
The crane adopts a double-girder gantry structure, high-strength steel, smooth running mechanisms, and an intelligent control system to ensure stable lifting, precise grabbing, and continuous 24-hour operation in harsh environments.
Main Components
1. Double Girder Gantry Structure
Box-type welded main girders
Rigid legs & flexible legs for structural balance
Rail-mounted gantry running system
2. Grab Lifting Trolley System
Hoisting mechanism with wire rope drums
Cross-travel trolley running mechanism
Grab opening/closing mechanism (electric or hydraulic)
Grab bucket types: clamshell grab, orange-peel grab, coal grab, waste grab
3. Grab Bucket
High-strength alloy steel construction
Multi-jaw or clamshell design
Hydraulic or motor-driven closing system
Wear-resistant liners for long service life
4. Electrical Control System
Frequency inverter control (VFD) for smooth motion
PLC monitoring, fault display, overload protection
Remote control or cabin control options
5. Safety Devices
Anti-collision device
Emergency stop
Limit switches
Rail clamps & storm brakes
Over-hoist & over-travel protection
Advantages
1. High Efficiency Bulk Handling
Designed specifically for coal, ore, sand, grain, biomass, and waste.
Automatic grab control improves each cycle time.
2. Strong Lifting and Grab Force
50-ton rated capacity ensures large volume and heavy bulk loads.
Stable grabbing with minimal material spillage.
3. Precise and Smooth Control
VFD control for hoist, trolley, and gantry motion.
Accurate positioning and reduced mechanical shock.
4. Durable Structure
Box-girder design offers excellent rigidity.
Corrosion-resistant coating for outdoor environments, ports, and terminals.
5. Multiple Working Modes
Cabin control, wireless remote, or semi-automatic operation.
Adaptable grab bucket configurations for different materials.
Applications
Port terminals: bulk cargo loading/unloading
Power plants: coal handling and storage management
Steel mills: ore and scrap metal handling
Cement plants: limestone, clinker, sand
Waste-to-energy plants: municipal waste feeding
Construction sites: sand & aggregate transfer
Bulk warehouses & yards: rapid material stacking and reclaiming
Rated Loading Capacity：5 ton, 10 TON, 100 ton, customized, 16/3.2 ton, 20/5 ton, 32/5 ton, 50/10 ton
Max. Lifting Height：40m, customized
Span：35m or clients' demands
Warranty：1 Year
Weight (KG)：20000 kg
Core Components：PLC, Engine, Bearing, Gearbox, Motor, Pressure vessel, Gear, Pump
Control way：Cab, wireless remote control or customized
Pictures & Components
1.Double Girder Gantry Structure
Welded box-type main girders
End beams with wheel groups
Rigid and flexible support legs
Rail clamps & storm brakes
Maintenance walkways and ladders
1.The main beam of an industrial gantry crane is a horizontal beam that spans the distance between two parallel tracks or rails. It is typically made of steel and serves as the primary structural component of the crane, providing support for the hoist mechanism, trolley, and load.
2.The main beam is designed to withstand the weight and forces generated by the crane's operations, including lifting, moving, and lowering heavy loads. It is also responsible for maintaining the stability and balance of the crane during operation.
3.The main beam can be either fixed or adjustable, depending on the specific needs of the application. Fixed beams are set at a specific height and cannot be adjusted, while adjustable beams can be raised or lowered to accommodate different load heights and clearance requirements.
4.Overall, the main beam is a critical component of an industrial gantry crane, providing the necessary strength and stability to handle heavy loads safely and efficiently.
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Grab Trolley (Hoisting Trolley Assembly)
Hoisting mechanism (motor, brake, gearbox, rope drum)
Trolley traveling mechanism (motor, gearbox, wheels)
Grab open/close mechanism (electric or hydraulic)
High-strength wire ropes
Trolley frame with guide rollers
The lifting system of an industrial gantry crane is responsible for raising, lowering, and transporting heavy loads. It typically consists of several components working together to provide a reliable and efficient hoisting mechanism.
The main components of the lifting system include:Hoist Motor: The hoist motor is the power source for the lifting system. It generates the torque required to lift and lower the load. The motor's capacity is determined by the crane's lifting capacity and duty cycle.
Hoist Drum(s) or Sheave Assembly: The hoist drum or sheave assembly is connected to the hoist motor through a reduction gearbox. As the motor turns, it rotates the drum or moves the sheaves, which in turn raises or lowers the wire ropes or chains.
3.In summary, the lifting system of an industrial gantry crane is a complex but essential component that enables the crane to perform its primary function: lifting and moving heavy loads safely and efficiently.
3.End carriage
1.The end carriage of an industrial gantry crane is a critical component that connects the crane to the runway beam or rail on which it travels.
2.Here are the key features and functions of the end carriage:
Structure and Functionality
Rollers or Wheels: The end carriage typically has several rollers or wheels that ride along the top of the runway beam or rail. These are designed to minimize friction and allow for smooth movement of the crane.
Bearings and Axles: To support the weight and movement, the rollers or wheels are mounted on axles with bearings that ensure they can rotate freely without excessive wear.
Locking Mechanism: Some end carriages may include locking mechanisms that can secure the crane in a fixed position when not in use or during maintenance.
Adjustment Mechanisms: There may be adjustment mechanisms to fine-tune the alignment and ensure that the crane moves straight along the runway beam without deviation.
3.The end carriage is vital for the stable and reliable operation of the gantry crane. It ensures that the crane can move smoothly and efficiently along the runway beam, carrying out its hoisting and transporting functions with precision. Proper maintenance and inspection of the end carriage are crucial to prevent issues that could affect the crane's performance or lead to safety hazards.
4.Crane travelling mechanism
1.The crane traveling mechanism of an industrial gantry crane is responsible for moving the crane horizontally along its runway beams or rails. This mechanism allows the crane to transport loads over a larger area, making it extremely useful in warehouses, shipyards, and other industrial environments where heavy items need to be moved around a broad expanse.
2.Here are the key components and features of the crane traveling mechanism:
Components of the Traveling Mechanism
Drive Units (Traction Units): These are typically electric motors that provide the power to move the crane. The number of drive units can vary depending on the size and capacity of the crane; some cranes may have multiple motors for each side to distribute the load.
Gearboxes: Gearboxes are used to reduce the high speed of the motor to a lower speed suitable for the crane's travel. They also increase the torque output, which is necessary to move the crane and its load.
Wheels or Rollers: Large wheels or rollers are mounted on axles and are driven by the motor through the gearbox. These wheels or rollers ride along the top of the runway beams or rails and are crucial for stable movement.
3.The traveling mechanism is one of the most critical components of an industrial gantry crane, as it determines the crane's mobility and range of operation. Proper maintenance and regular inspections are crucial to ensure that the traveling mechanism operates smoothly and safely. Any issues with this mechanism can significantly impact the crane's performance and safety, making it vital to address any problems promptly.
5.Trolley travelling mechanism
1.The trolley traveling mechanism of an industrial gantry crane is responsible for moving the hoist or lifting mechanism horizontally along the crane's main beam or gantry. This allows the crane to position the load precisely in the transverse direction.
2.The trolley traveling mechanism consists of several key components:
Components of the Trolley Traveling Mechanism
Drive Unit: Typically an electric motor, the drive unit provides the power to move the trolley. The size and capacity of the motor depend on the crane's lifting capacity and the required speed of the trolley.
Gearbox: The gearbox reduces the high speed of the motor output to a lower speed suitable for the trolley's travel. It also increases the torque, which is necessary to move the hoist mechanism and any attached load.
Wheels or Rollers: The trolley rides on wheels or rollers that are mounted on axles. These wheels or rollers travel along the flanges or tracks on the main beam, allowing the trolley to move back and forth.
Brake System: A braking system is integrated into the trolley to control its movement and to hold it in position when needed. This can be a mechanical brake, an electromechanical brake, or a dynamic braking system.
3.The trolley traveling mechanism is crucial for precise positioning of the load in the transverse direction. It allows the crane to place loads accurately at different points along the length of the gantry. Proper maintenance and regular inspections are essential to ensure that the trolley mechanism operates smoothly and safely. Any issues with this mechanism can significantly impact the crane's operational efficiency and safety, making it vital to address any problems promptly.
6.Crane wheel
1.The crane wheel of an industrial gantry crane is a critical component that allows the crane to move along its runway beams or rails. These wheels are designed to support the weight of the crane, its load, and any additional dynamic forces generated during operation.
2.Here are the key features and functions of crane wheels:
Features of Crane Wheels
Material: Crane wheels are typically made from high-strength materials such as steel or cast iron to ensure they can withstand the heavy loads and stresses involved in lifting operations.
Size and Configuration: The size of the wheels varies depending on the capacity and design of the crane. They can be larger for heavier cranes to distribute the load more evenly. The number of wheels per axle and the number of axles per crane can also vary based on design requirements.
3.Crane wheels play a vital role in the mobility and stability of industrial gantry cranes. They are responsible for transferring the weight of the crane and its load to the runway beams or rails while allowing for smooth travel. The durability and efficiency of the crane's movement largely depend on the quality and condition of these wheels.
4.Proper maintenance of crane wheels, including regular inspections and timely replacement of worn components, is crucial for the safe and reliable operation of the crane. Neglecting wheel maintenance can lead to increased downtime, reduced efficiency, and potential safety hazards.
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7.Cabin or Remote Control System
Air-conditioned operating cabin with joystick controls
Safety glass windows and operator seat
Wireless remote control (optional)
CCTV monitoring system (optional)
Motor
The motor of an industrial gantry crane is a critical component that provides the power necessary for lifting and moving loads. Motors in gantry cranes are typically electric and can be categorized into two main types based on their function: the hoisting motor and the travelling (or traversing) motor.
The hoisting motor is responsible for lifting and lowering the hook or grab that engages with the load. This motor's primary function is to control the vertical movement of the crane's loading mechanism.
Crane motors are the powerhouse of industrial gantry cranes, providing the energy required for both lifting and moving operations. The performance, reliability, and safety of the crane are heavily dependent on the motors' efficiency and durability. Proper selection, maintenance, and regular inspections of these motors are crucial for ensuring the crane operates smoothly and safely. Any issues with the motors can lead to operational inefficiencies, increased downtime, and potential safety risks, making prompt attention to motor problems essential.
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Sound and light alarm system & limit switch
1.Industrial gantry cranes are equipped with a sound and light alarm system and limit switches to enhance safety and operational efficiency. These components play crucial roles in preventing accidents and ensuring that the crane operates within its designated parameters.
2.Sound and Light Alarm System
The sound and light alarm system is designed to alert personnel in the vicinity of the crane about its operational status. This system is particularly important in environments where the crane operates in close proximity to workers or where visibility is limited.
3.Limit Switches
Limit switches are electronic devices that serve as critical safety features on industrial gantry cranes. They detect the position of the crane or its components and cut off power when the crane reaches its operational limits, preventing potential accidents and damage.
4.Both the sound and light alarm system and limit switches are integral to the safe operation of industrial gantry cranes. The alarm system ensures that personnel are aware of the crane's movements and operational status, reducing the risk of collisions or other hazards. Limit switches, on the other hand, automate safety by physically preventing the crane from operating beyond its design limits. Together, these systems contribute to a safer workplace and protect both the crane equipment and the personnel working around it. Proper maintenance and regular testing of these systems are essential to ensure they function reliably and effectively.
10.Safety Devices
Overload Protection Devices
Overload protection devices are designed to prevent the crane from operating beyond its safe working load limits. These devices monitor the load being lifted and will either send an alert or shut down the crane if the load exceeds the specified limit. This is crucial for preventing structural damage to the crane and avoiding accidents that can occur due to overloading.
Limit Switches
As mentioned earlier, limit switches automatically stop the crane when it approaches the end of its travel range or when any of its components reach their operational limits. These switches are essential for preventing the crane from exceeding its physical boundaries, which could result in damage to the structure or collision with obstacles.
Anti-Collison Devices
Anti-collison devices are particularly important in environments where multiple cranes operate in close proximity or where there is significant ground traffic. These devices use sensors, cameras, or other technologies to detect the presence of other objects in the crane's path and either alert the operator or automatically halt the crane's movement to prevent a collision.
Emergency Stop Buttons
Emergency stop buttons are manually operated controls that allow the crane operator or any authorized personnel to immediately stop all crane operations in case of an emergency. These buttons are strategically placed within easy reach of the operator and are often red and highly visible.
Brake Systems
Brake systems on industrial gantry cranes are designed to hold the load securely in place when not in motion and to provide controlled stopping during operations. These brakes can be mechanical, electrical, or a combination of both, and they are critical for preventing unexpected load movements that could lead to accidents.
Levelness Indicators
Levelness indicators are used to ensure that the crane is level during operation, especially when lifting precise or delicate loads. Uneven lifting can cause loads to shift, potentially leading to loss of control and accidents. These indicators help operators maintain the crane's balance and stability.
Safe Working Load Indicators
Safe working load indicators clearly mark the maximum safe load capacity for the crane. This information is vital for operators to ensure that the crane is not overloaded and operates within its design specifications.
11.Control Mode
1.Manual Control
Direct Intervention: The crane operator directly controls the hoisting and traveling movements of the crane using handwheels, levers, or push buttons. This mode requires skilled operators who can manually synchronize the movements to achieve the desired positioning of the load.
Simple Mechanisms: Manual control systems are generally simpler in design and may be less prone to complex failures.
Limited Precision: The precision of the crane's movements is limited to the operator's skill and experience.
2.Semi-Automatic Control
Assisted Operation: The crane operator uses control devices such as joysticks or paddle switches to command the crane, but the system includes automated features that assist in controlling speed and synchronization.
Enhanced Safety: Semi-automatic systems often include safety features like automatic stops at load limits or travel limits.
Improved Efficiency: These systems can improve operational efficiency by reducing the need for highly skilled operators.
3.Fully Automatic Control
Programmable Logic Controller (PLC): The crane's operations are governed by a PLC, which can be programmed to perform specific sequences of operations automatically.
Precise Control: Fully automatic systems offer precise control over the crane's movements, allowing for complex maneuvers to be executed consistently.
Reduced Human Error: Automated systems reduce the potential for human error, enhancing safety and reliability.
Remote Operation: In some cases, fully automatic cranes can be operated remotely, removing the operator from potentially hazardous environments.
4.Radio Control
Wireless Operation: The crane operator uses radio transmitters to control the crane from a distance, which can be particularly useful in environments where visual contact with the crane is limited.
Increased Flexibility: Radio control allows operators to move freely around the work area while maintaining control of the crane.
Safety Considerations: Proper frequency management and security measures must be in place to prevent interference or unauthorized operation of the crane.
5.Computer Control
Advanced Systems: Some gantry cranes may employ computer systems that integrate advanced features such as machine vision, artificial intelligence, and data analysis to optimize operations.
Data Collection: Computer-controlled cranes can collect operational data, which can be used for maintenance planning and operational optimization.
Interface Options: Operators may interact with the crane through touch screens or other advanced interfaces, providing detailed feedback and control options.
12.Sketch
Main technical
Advantages
Advantages of 50 Tons Gantry Crane with Grab Bucket
1. High-Efficiency Bulk Material Handling
Designed for rapid loading, unloading, stacking, and transferring of bulk materials such as coal, ore, sand, grain, and waste.
Optimized grab cycle significantly increases throughput per hour.
2. Strong Lifting & Grabbing Capacity
50-ton rated lifting ensures stable handling of large volumes.
High grabbing force reduces material drop and increases grip accuracy.
3. Smooth, Precise, and Stable Operation
VFD (frequency conversion) control minimizes vibration and shock.
Smooth start/stop and precise positioning ensure safer operations.
4. Durable Structure for Harsh Environments
Heavy-duty box-type girders provide high rigidity and long service life.
Anti-corrosion paint system suitable for port, mining, and industrial outdoor use.
5. Multiple Grab Configurations
Compatible with clamshell, orange-peel, coal, and waste grabs.
Quick adaptability for different materials and working conditions.
6. Intelligent Safety & Monitoring System
PLC control with fault diagnostics and overload protection.
Optional features: CCTV, automatic grab control, and anti-sway system.
7. Flexible Operation Options
Cabin control, wireless remote control, or semi-automatic mode.
Easy integration into continuous production lines and material yards.
8. Stable Long-Travel Performance
Gantry travel mechanism designed for long-distance, heavy-duty cycles.
Anti-skewing and storm brake systems ensure stability in outdoor environments.
9. Lower Maintenance and Operating Costs
Modular design: easy access for maintenance.
Energy-efficient motors and regenerative braking reduce power consumption.
Application:
Applications of 50 Tons Gantry Crane with Grab Bucket
1. Port & Terminal Bulk Cargo Handling
Unloading and stacking coal, ore, sand, minerals, grain, and other bulk materials.
Ideal for dockside bulk storage yards and barge/ship unloading operations.
2. Power Plants
Feeding coal to boiler systems.
Handling biomass fuel, ash, and other bulk materials.
Suitable for continuous 24-hour operation.
3. Steel Mills & Metallurgical Plants
Transporting and loading iron ore, coal, coke, limestone, and scrap metal.
Used in raw material yards and process feeding lines.
4. Cement & Building Material Industries
Handling limestone, clinker, gypsum, sand, and aggregates.
Efficient for large-scale material yards and batching plants.
5. Waste Treatment & Waste-to-Energy Plants
Feeding and sorting municipal solid waste.
Suitable for garbage transfer stations and incineration plants.
Often paired with grappling waste grab buckets.
6. Mining & Mineral Processing Yards
Moving bulk minerals such as copper ore, bauxite, silica, and coal.
Suitable for mining stockyards and crushing station supply areas.
7. Grain Depots & Agricultural Bulk Storage
Handling large quantities of grain, feed, soybeans, corn, or fertilizer.
Useful for indoor & outdoor stockyard operations.
8. Construction Material Yards
Loading and transferring sand, gravel, stone, and other aggregates.
Helps improve efficiency in high-volume material supply depots.
9. Logistics & Warehousing of Bulk Goods
Bulk cargo stockpile management.
Suitable for railway freight yards and transportation hubs.
Crane production procedure
1. Design and Engineering
Detailed Engineering: Develop detailed engineering drawings and specifications, including the main beam, hoist, trolley, end carriages, and other components.
Simulation and Modeling: Use computer-aided design (CAD) and simulation tools to model the crane's performance and optimize its design.
2. Material Selection
Material Specifications: Select high-quality materials that meet the requirements for strength, durability, and heat resistance. Common materials include high-strength steel, alloys, and specialized coatings.
Procurement: Source materials from approved suppliers, ensuring they meet the necessary quality and certification standards.
3. Component Fabrication
Cutting and Shaping: Cut and shape raw materials into the required components, such as beams, columns, and brackets. This may involve processes like plasma cutting, laser cutting, and machining.Welding and Assembly: Weld components together to form the crane's structural elements. This includes welding the main beam, end carriages, and other load-bearing parts.
4. Assembly
Sub-Assembly: Assemble individual components, such as the hoisting system, trolley, and end carriages, into sub-assemblies. This involves fitting parts together and ensuring proper alignment.Main Assembly: Combine sub-assemblies to construct the complete crane structure. This includes mounting the hoist and trolley on the main beam, attaching the end carriages, and installing the control systems.
5. Integration of Systems
Electrical Systems: Install electrical components, including motors, control panels, wiring, and sensors. Ensure that the crane's electrical systems are properly integrated and tested.
Control Systems: Implement and configure control systems, such as programmable logic controllers (PLCs), remote controls, and safety devices. Verify that the control systems function correctly and are calibrated.
6. Testing and Quality Assurance
Pre-Operational Testing: Conduct pre-operational tests to check the crane's functionality, including load testing, operational testing of the lifting and traveling mechanisms, and control system checks.
Safety Testing: Verify that safety features, such as limit switches, alarms, and emergency stops, are working correctly and meet safety standards.
Inspection: Perform a detailed inspection of the crane's structure and components to ensure compliance with design specifications and quality standards.
7. Final Adjustments and Calibration
Fine-Tuning: Make any necessary adjustments to optimize the crane's performance and ensure smooth operation. This may include calibrating sensors, adjusting controls, and fine-tuning the lifting system.
Documentation: Prepare and review documentation, including operation manuals, maintenance guides, and safety instructions.
8. Delivery and Installation
Transport: Arrange for the transport of the crane to the installation site, ensuring that it is handled and shipped safely to prevent damage.
Installation: Oversee the installation of the crane at the customer's facility, including assembly, alignment, and connection to power sources and control systems.
Training: Provide training for operators and maintenance personnel to ensure they are familiar with the crane's operation and safety procedures.
9. Commissioning and Handover
Commissioning: Conduct final commissioning tests to verify that the crane operates correctly under real-world conditions and meets performance specifications.
Handover: Officially hand over the crane to the customer, providing all necessary documentation, including certificates of compliance, warranty information, and maintenance schedules.
Workshop view
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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