Double Rail Hoist Crab Trolley for Double Girder Cranes 3 Ton to 63 Ton

Double rail crab trolley for double girder cranes 3 ton to 63 ton, designed for smooth load handling and high stability. Check 32 ton hoist crab and trolley cases.

Double Girder Cranes

A double girder crane is a type of overhead crane that features two parallel girders (beams) supporting a trolley and hoist system. The main advantage of the double girder design is its ability to support heavier loads and provide a greater lifting height compared to single girder cranes. The structure consists of two main beams (the girders) that run parallel to each other across the span of the crane. These girders support a hoist (lifting mechanism) and trolley that move horizontally along the span to lift, lower, and transport loads across the crane's range.

The crane operates by utilizing an electric hoist to lift loads vertically, while the trolley provides horizontal movement. This combination of vertical and horizontal motion allows for precise positioning and handling of materials or equipment in various industrial settings.

Typical Applications and Industries Using Double Girder Cranes

Double girder cranes are commonly used in industries that require heavy lifting and large spans. Typical applications include:

• Manufacturing and Assembly: These cranes are essential in factories where heavy machinery or equipment need to be moved or assembled, such as in automotive, steel, or aerospace manufacturing plants.
• Construction: Double girder cranes are used on construction sites to move large materials, structural steel, and other heavy items for building construction, bridge building, and infrastructure projects.
• Shipping and Warehousing: In ports and warehouses, double girder cranes are used for moving large cargo, containers, and heavy equipment.
• Heavy Equipment and Machinery Handling: Industries that deal with large machinery or equipment often rely on double girder cranes to handle lifting, moving, and positioning tasks safely and effectively.

Benefits of Using Double Girder Cranes for Heavy Lifting and Stability

• Increased Load Capacity: The dual girder design allows for higher load capacities, making double girder cranes ideal for handling large or heavy objects. These cranes can typically handle loads of up to 100 tons or more, depending on their design and specifications.
• Greater Lifting Height and Span: With two parallel girders, double girder cranes can span larger areas and achieve greater lifting heights, making them suitable for applications that require wide coverage and vertical reach.
• Improved Stability and Safety: The robust design of double girder cranes ensures superior stability while lifting, particularly when handling heavy or off-center loads. The additional girder provides support to distribute weight more evenly, reducing the risk of tipping and enhancing safety.
• Customization and Versatility: Double girder cranes are highly customizable, with options for different hoist types, lifting speeds, and control systems. This makes them versatile and adaptable to a wide range of industries and applications.

Role of Double Girder Hoist Crab and Trolley

Definition and Function of the Double Girder Trolley in a Double Girder Crane System

The double girder trolley is a critical component within the crane system, responsible for the horizontal movement of the hoist along the two parallel girders of the crane. This allows the crane to cover a wide area, moving loads from one end of the crane to the other. The trolley itself typically includes the hoist, which is the device used to lift and lower the load. The trolley moves along the girders, enabling the crane to position the load at specific points within its operational range.

In a double girder crane system, the trolley is usually powered by an electric motor, which drives the trolley along the crane's rails. The combination of the vertical lifting function provided by the hoist and the horizontal movement of the trolley gives the crane flexibility and precision in handling various loads.

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Key Components of a Double Girder Hoist Crab and Trolley

A double girder trolley generally includes the following key components:

• Hoist: The lifting mechanism that moves vertically to raise and lower the load. The hoist typically includes a motor, gearbox, drum, and wire rope or chain.
• Trolley Frame: The structure that supports the hoist and moves along the crane's rails. The frame is designed to handle the weight of the hoist and load, and to provide a stable base for operation.
• Wheels/Track: The trolley moves along rails that are mounted on the crane's girders. The wheels are designed to glide smoothly along the track, ensuring efficient horizontal movement.
• Drive System: An electric motor and gear system that powers the trolley's horizontal movement. This system controls the speed and direction of the trolley, allowing it to travel across the crane's span.
• Limit Switches and Controls: These are safety features that prevent the trolley from over-traveling or colliding with the ends of the crane's span. They ensure precise and safe movement during operation.

How the Trolley Moves Along the Crane Rails to Provide Load Handling Flexibility

The double girder trolley moves along the crane's two parallel girders, providing the horizontal travel needed to position loads accurately. The trolley typically operates via an electric motor that drives the wheels along the crane rails. The movement is smooth and controlled, allowing the operator to precisely position the load for lifting or transport.

• Horizontal Movement: The trolley can travel the entire length of the crane's span, allowing it to move materials and equipment across the work area. This horizontal movement is essential for tasks like positioning materials for assembly, placing items in storage, or moving heavy equipment for maintenance.
• Precision Handling: The trolley is designed to handle precise load movements, even under heavy load conditions. By adjusting the speed and direction of the trolley, operators can position loads with great accuracy.
• Flexibility: The combination of vertical lifting from the hoist and horizontal movement from the trolley provides the crane with unmatched flexibility, making it suitable for a wide range of industrial applications, from moving large steel beams to transporting machinery in a manufacturing plant.

In summary, the double girder trolley plays a vital role in the crane's ability to move loads efficiently along its span, while the double girder crab (which includes the trolley) ensures the system's overall stability and lifting capacity. These components work together to allow for precise, safe, and flexible handling of heavy loads in various industrial applications.

Main Specification of LH Types Double Girder Hoist Crab and Trolley

Case Study: Upgrading to a 32-Ton Double Rail Crab and Trolley System in a Heavy Machinery Manufacturing Plant

Background

A heavy machinery manufacturing plant, specializing in the production of industrial equipment for the construction and mining sectors, was facing significant challenges with its existing crane systems. The older cranes were unable to handle the increasingly heavier loads, such as engines, gearboxes, and large structural components weighing up to 32 tons. As a result, the plant experienced delays, excessive downtime, and potential safety risks due to the strain placed on the outdated equipment.

In response, the plant decided to upgrade its lifting system by implementing a 32-ton double rail crab and trolley system, which would provide higher lifting capacity, better operational efficiency, and enhanced safety for handling large, heavy components.

Crane Trolley Type: Electric Crab Hoist Unit and Trolley (LH Type)

System Overview: The plant has selected the LH-type electric crab hoist unit and trolley for its advanced lifting capabilities and smooth, efficient operation. Powered by an electric motor, this system drives both the hoist unit and the trolley, making it ideal for heavy-duty lifting tasks. The electric crab hoist unit and trolley system is engineered to deliver consistent performance, ensuring smooth, precise lifting of heavy components such as industrial engines, turbine parts, and structural beams.

Key Features:

• Electric Operation: The electric crab hoist unit ensures smooth, controlled lifting and lowering of loads, reducing the risk of damage and enhancing safety. The trolley moves along the rails with precision, providing excellent control over load positioning.
• Speed and Efficiency: The electric crab hoist unit and trolley are much faster than manual lifting systems, which improves overall productivity by reducing cycle times and enabling quicker load handling.
• Reliability: Designed for continuous heavy-duty use, the electric crab hoist unit and trolley system ensures long-lasting performance and minimizes downtime, even in demanding industrial environments.

Advantages Over Manual Hoists:

• Faster Load Handling: The electric crab hoist unit and trolley system significantly reduces the time needed to lift and position heavy loads, improving overall efficiency.
• Reduced Labor: By automating the lifting and movement of loads, the electric crab hoist unit and trolley system eliminates the need for manual labor, reducing operator fatigue and the risk of injury.
• Improved Precision: The electric crab hoist unit and trolley offer better control over load positioning, ensuring that loads are handled with precision and accuracy, reducing the likelihood of errors.

Capacity of Electric Crab Hoist Unit and Trolley: 32T

• Capacity Overview: The 32-ton capacity of the electric crab hoist unit and trolley system is designed to handle some of the plant's heaviest loads, including large components such as industrial engines, turbine parts, and structural beams. The 32-ton limit ensures the system can manage these heavy components efficiently and safely in a single lifting operation.
• Applications: The 32-ton electric crab hoist unit and trolley are primarily used for handling oversized components in the plant, including large industrial parts and assemblies. These components are often too heavy for smaller cranes or hoists and require a system capable of safely moving them through the plant's production process.
• Importance of Correct Capacity: Choosing the right capacity for the electric crab hoist unit and trolley system is critical for safety and efficiency. The 32-ton capacity ensures that the system can handle the heaviest loads without risking overloading, which could lead to equipment failure, safety hazards, or costly downtime. A correctly sized hoist also extends the system's lifespan and reduces maintenance costs.

Lifting Height of Electric Crab Hoist Unit and Trolley: 12M

• Lifting Height: The electric crab hoist unit and trolley can lift components to a height of 12 meters, providing greater operational flexibility within the plant. This height is especially valuable when moving tall or bulky parts between different production stages or storage areas.
• Impact on Operations: With a 12-meter lifting height, the electric crab hoist unit and trolley can move components between multiple floors in the facility, access high storage racks, or position parts at assembly stations. This flexibility reduces the need for additional lifting systems and maximizes space utilization within the plant.
• Operational Flexibility: The 12-meter lifting height improves vertical handling capabilities, making it easier to lift tall machinery parts or large equipment that would otherwise require more complex handling methods. The height also enables efficient use of vertical space, streamlining operations and increasing overall productivity.

Gauge of Electric Crab Hoist Unit and Trolley: 2M.

• Gauge Overview: The 2-meter gauge refers to the distance between the rails on which the electric crab hoist unit and trolley travel. This wider gauge provides enhanced lateral stability, especially when handling heavy or unevenly distributed loads. The wider gauge ensures that the electric crab hoist unit and trolley system can handle large or irregularly shaped loads without tipping or swaying.
• Role in Stability: A wider 2-meter gauge enhances the stability of the electric crab hoist unit and trolley, allowing it to safely move large, heavy, or awkwardly shaped loads. This is particularly important in industries where heavy materials or large machinery components need to be transported. The wider gauge provides better balance and reduces the risk of load instability during transport.

The 32-ton electric crab hoist unit and trolley system is specifically designed to meet the needs of heavy-duty lifting operations in industrial settings. With its electric hoist, 32-ton capacity, 12-meter lifting height, and 2-meter gauge, this system delivers superior performance, reliability, and safety. The electric crab hoist unit and trolley provide precise load handling, improve operational speed, and reduce the need for manual labor, making it an ideal solution for handling large and heavy components in modern manufacturing environments.

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Implementation and Results

After the installation of the 32-ton double rail crab and trolley system, the plant experienced significant improvements in both productivity and safety.

Enhanced Efficiency:

• The crane's electric hoist and 32-ton capacity allowed the plant to handle larger loads with fewer lifting operations. Previously, the plant had to use multiple cranes to lift large components, but the new system could lift and move these parts in a single operation, greatly speeding up production cycles.
• With faster lifting speeds and more precise control, the crane improved overall workflow, reducing time spent on each lifting task and increasing throughput.

Reduced Downtime:

• The installation of the new crane system minimized equipment failure due to overloading. The 32-ton capacity ensured that the crane could lift heavy parts without the risk of strain or damage, leading to reduced maintenance needs and less downtime.
• The plant also experienced fewer safety incidents related to crane malfunctions, as the new system is designed for continuous operation with built-in safety features like overload protection.

Improved Safety:

• The 2-meter gauge provided improved stability when lifting large or awkwardly shaped loads, reducing the risk of tipping or swinging loads. This made the crane safer for operators and other personnel working in the vicinity.
• The electric hoist's precise control features also contributed to safer operations, allowing for better load positioning and reducing the likelihood of human error.

Better Space Utilization:

• The 12-meter lifting height allowed the plant to utilize vertical space more effectively, storing heavy components in higher locations and freeing up valuable floor space. This helped to optimize storage and material handling within the facility.

The installation of the 32-ton double rail crab and trolley system with an LH-type electric hoist revolutionized the heavy machinery manufacturing plant's lifting operations. The new crane system provided greater lifting capacity, improved operational efficiency, and enhanced safety, ultimately increasing productivity and reducing downtime. By selecting the right crane specifications—such as the 32-ton capacity, 12-meter lifting height, and 2-meter gauge—the plant was able to address its operational challenges and improve the handling of large, heavy components. This case highlights the importance of selecting the appropriate crane system to meet specific lifting needs, ensuring that a facility can handle its heaviest loads with maximum efficiency and safety.

Electric Hoist Crab Trolley Design Options: LH Double Rail Hoist Crab and Trolley vs. NLH European Style Double Rail Hoist Crab and Trolley

When selecting an electric hoist crab trolley, two popular options are the LH Double Rail Hoist Crab and Trolley and the NLH European Style Double Rail Hoist Crab and Trolley. Both systems offer different features, capabilities, and design philosophies suited to various industrial applications. Here's a closer look at the differences between these two options:

LH Double Rail Hoist Crab and Trolley (3 Ton to 63 Ton)

The LH Double Rail Hoist Crab and Trolley is an economical and reliable solution for heavy-duty lifting tasks. It offers a more traditional design suitable for a range of industrial environments, from manufacturing to construction. Below are the key features and benefits of this design:

Design Characteristics:

• Load Capacity: Available in capacities ranging from 3 tons to 63 tons, the LH Double Rail system is ideal for medium to heavy lifting applications.
• Lifting System: This system typically uses CD/MD electric hoists or square hoists as the lifting mechanism. These hoists are known for their reliability, simplicity, and cost-effectiveness.
• Track System: The double rail design offers greater stability and smoother movement, reducing the wear and tear on components over time.

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Applications:

• Industrial Manufacturing: Ideal for heavy lifting in factories, production lines, and warehouses that need to move large or bulky items.
• Construction and Heavy Equipment: Suitable for moving large materials and equipment, such as steel beams, machinery, and concrete forms.
• Logistics: Used in ports, loading docks, and distribution centers where substantial lifting capacities are required.

Advantages:

• Cost-Effective: The LH system provides a more budget-friendly option without compromising on durability and performance. This makes it a good choice for industries that need reliable lifting at an affordable price.
• Simple and Durable: The use of CD/MD hoists and square hoists offers reliable performance with lower maintenance requirements.
• Wide Application Range: Available in multiple load capacities, this system is versatile enough for various industrial sectors.

Disadvantages:

• Less Compact: The LH system may take up more space compared to European-style designs, and it may not be ideal for facilities with limited headroom or confined spaces.
• Basic Features: While reliable, this design doesn't offer the advanced features found in more modern designs, such as smart controls or low-headroom options.

NLH European Style Double Rail Hoist Crab and Trolley (3 Ton to 80 Ton)

The NLH European Style Double Rail Hoist Crab and Trolley offers a more modern and sophisticated solution with advanced features and a compact design. This system is built for industries that prioritize high efficiency, precision, and space optimization.

Design Characteristics:

• Load Capacity: Available in capacities ranging from 3 tons to 80 tons, the NLH system can handle slightly higher loads compared to the LH system, making it suitable for a broader range of lifting tasks.
• Lifting System: The NLH system integrates advanced European-style electric hoists, typically offering smoother, more controlled lifting with higher performance.
• Low-Headroom Design: One of the standout features of the NLH system is its low-headroom design, which allows for a more compact and efficient setup, especially in facilities where height is a limitation.
• Compact Structure: The overall structure is more compact and streamlined, making it suitable for environments where space is at a premium.

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Applications:

• Precision Manufacturing: Perfect for industries that require high precision and efficient lifting in areas such as automotive manufacturing, electronics assembly, and clean rooms.
• Aerospace: Used in aircraft assembly and maintenance, where tight space and precision handling are critical.
• Warehouse and Distribution: Ideal for environments requiring fast, efficient, and space-saving systems, such as in automated warehouses or logistics hubs.

Advantages:

• Advanced Features: The NLH European-style hoist trolley comes with smart features, such as variable speed control, overload protection, and remote operation, improving both safety and productivity.
• Space-Efficient: The low-headroom design minimizes the crane's height requirements, making it ideal for facilities with low ceilings or those seeking a more compact crane system.
• Energy-Efficient: This system tends to be more energy-efficient than the LH system due to its optimized components and performance-focused design.
• Enhanced Control and Precision: The European-style hoists provide smoother, more precise load control, which is crucial in industries like automotive, aerospace, and high-precision assembly.

Disadvantages:

• Higher Cost: The advanced features, compact design, and European engineering make the NLH system generally more expensive than the LH system.
• Requires Skilled Operation: While more efficient, the smart features and control systems may require additional training for operators, increasing setup time.

Key Comparison Factors: LH vs. NLH Electric Hoist Crab and Trolley

Choosing Between LH and NLH Electric Hoist Crab and Trolley Systems

The choice between the LH Double Rail Hoist Crab and Trolley and the NLH European Style Double Rail Hoist Crab and Trolley will largely depend on:

• Load Requirements: If you need to handle extremely heavy loads (63 tons or more), the LH system might be the better option. However, the NLH system can handle up to 80 tons, which gives it the edge for slightly higher capacities in a more compact design.
• Space Constraints: If your facility has limited space or low ceilings, the NLH European style with its low-headroom design is the preferred choice.
• Precision Needs: For industries requiring high precision and advanced control, such as automotive assembly or aerospace, the NLH system with its smart features offers enhanced control and smooth operation.
• Budget Considerations: If cost is a major factor, the LH system offers a more budget-friendly option without compromising on durability and reliability for standard industrial lifting needs.

Both the LH Double Rail Hoist Crab and Trolley and the NLH European Style Double Rail Hoist Crab and Trolley offer excellent options for heavy-duty lifting, but the right choice depends on your specific requirements. The LH system is ideal for economical, heavy-duty applications, while the NLH system provides a space-efficient, high-precision solution with advanced features. Understanding your load capacity needs, space limitations, and desired functionality will help you make an informed decision and select the right hoist trolley system for your operations.

How to Get a Customized Double Rail Hoist Crab and Trolley

Customizing a double rail hoist crab and trolley system is a strategic approach to optimizing lifting operations in industries with unique requirements. These custom systems can be designed to meet specific load capacities, environmental conditions, space limitations, and operational needs. Here's a step-by-step guide to help you get a customized double rail hoist crab and trolley:

1. Identify Your Specific Requirements

Before reaching out to a manufacturer or supplier, it's essential to have a clear understanding of the specific requirements for your hoist crab and trolley system. Consider the following factors:

• a. Load Capacity: Determine the maximum load your hoist will need to handle. Double rail hoist crabs are available in capacities ranging from a few tons to 80 tons or more. The load capacity is one of the most critical customization factors because it directly impacts the design and materials used in the trolley.
• b. Lifting Height: Decide on the required lifting height for your application. If you're working in an environment with high ceilings or need to stack items vertically, a greater lifting height will be necessary. Standard lifting heights are typically 12m or more, but custom heights can be designed.
• c. Span (Rail Gauge): The rail gauge is the distance between the two rails of the double rail hoist system. A wider gauge may provide increased stability for larger loads, while a narrower gauge could offer space savings for confined areas. Specify the gauge that best suits your facility and lifting needs.
• d. Type of Hoist: Choose between electric hoists, manual hoists, or other hoist types based on your application's power needs and operational preferences. For instance, LH-type electric hoists offer cost-effective, high-performance lifting solutions, while European-style NLH hoists provide advanced features such as low headroom and smart controls.

Consult with a Manufacturer or Supplier

Once you have a detailed understanding of your needs, it's time to consult with a crane manufacturer or supplier. A specialized crane manufacturer can help you assess and refine your requirements and suggest the best solutions for your application.

Key Considerations When Consulting:

• Customization Options: Discuss the available customization options, such as hoist speed, safety features, control systems, and material specifications.
• Environmental Factors: If your crane will operate in extreme environments (e.g., marine, high temperatures, or hazardous areas), make sure to specify any anti-corrosion coatings, explosion-proof features, or other modifications that will enhance its durability and safety.
• Power Supply and Control Systems: You may need to select specific power supply types (e.g., three-phase electric power) and decide between manual or remote control systems for more advanced, automated operation.

Specify the Design Features

To ensure your customized hoist crab and trolley system meets operational needs, you may want to specify certain design features, such as:

Low Headroom Design:If your facility has height constraints or requires more compact operation, consider opting for a low headroom design. This allows for optimal use of vertical space, making it ideal for areas with limited clearance.

Control Options:Determine whether you want manual control, pendant control, or wireless remote control options. Smart control systems may include features like variable speed control, load monitoring, and overload protection.

Speed and Duty Cycle:Specify the hoist's lifting speed and duty cycle based on your production requirements. Hoists with higher lifting speeds are ideal for applications that require rapid lifting, while slower speeds may be more suitable for precision handling.

Custom Hoist Mechanisms: For specialized applications, you may need to include custom hoist mechanisms such as winches, grabs, or magnetic lifts depending on the types of loads you need to handle (e.g., heavy equipment, steel beams, or containers).

Choose Materials and Durability Features

Depending on the operational environment and the type of materials you handle, you may need specific materials and features to ensure durability and safety:

• Corrosion-Resistant Materials: If your crane operates in a marine or chemical environment, specify materials that are resistant to corrosion, such as galvanized steel or stainless steel.
• Heavy-Duty Components: For cranes handling large or heavy loads, ensure that the rails, wheels, and frame are made from high-quality, durable materials that can withstand constant wear and heavy-duty operation.
• Explosion-Proof Features: For applications in hazardous or explosive environments, ensure the hoist system complies with industry standards for explosion-proof components.

Get a Detailed Quotation and Timeline

Once your customization specifications are defined, request a detailed quotation from the manufacturer. The quotation should include the following:

• Cost Breakdown: Ensure that the quote provides a detailed breakdown of costs for each customization element (e.g., hoist type, capacity, control system, and safety features).
• Lead Time: Customizations can take time, so it's important to discuss the estimated delivery timeline and any potential delays in production.
• Warranties and After-Sales Support: Understand the warranty terms and the after-sales support available, including installation, training, and maintenance services.

Review and Finalize the Design

Once you've received the proposal, carefully review the design and specifications to ensure they align with your operational needs. Some key aspects to check:

• Compliance with Standards: Verify that the system meets any relevant industry standards (e.g., ISO, CE, or ASME standards).
• Installation Requirements: Confirm that the manufacturer offers installation services, or if necessary, provide your own engineering team to handle the setup.
• Testing and Inspection: Ensure that the hoist system will undergo thorough quality control testing and inspections before delivery.

Installation and Training

After finalizing your purchase, coordinate with the manufacturer or a professional crane services provider for the installation and testing of your customized double rail hoist crab and trolley system. Ensure the following:

• Installation Team: Ensure qualified professionals handle the installation and setup of the system to ensure proper function.
• Operator Training: Provide training for your operators to familiarize them with the crane's controls, safety procedures, and maintenance requirements.

Ongoing Maintenance and Support

Once the system is installed and operational, regular maintenance is crucial for optimal performance and longevity. Make sure to schedule routine inspections and servicing to ensure the system remains in good working condition.

Additionally, having after-sales support available for troubleshooting or repairs will help you minimize downtime and keep your operations running smoothly.

Getting a customized double rail hoist crab and trolley system requires careful planning and collaboration with a manufacturer who understands your unique needs. By following the steps outlined above — from identifying requirements and selecting design features to obtaining a detailed quotation and ensuring quality installation — you can ensure that your crane system is tailored to your operational demands. With a properly customized system, you'll optimize performance, improve safety, and increase efficiency in your lifting operations.