20 Ton Overhead Crane with Double Trolley for Sale
Dual-Trolley 20-Ton Double Girder Crane Supports High-Capacity PV Module Production Lines

High-capacity production lines move fast, and lifting equipment must keep up. Even short delays during panel transfers can accumulate, reducing overall efficiency.

Here's what to keep in mind:

• Multiple lifts per hour are standard on busy lines.
• Manual repositioning or small hoists can create bottlenecks.
• Even a few minutes of delay per lift adds up across the day, cutting total output.

A crane that can match the line's speed ensures:

• Smooth transport between workstations.
• Minimal idle time for workers and machinery.
• Continuous, predictable material flow throughout the production line.

Worker safety and module protection are equally important. A crane must move modules steadily, avoiding sudden jerks or collisions, while fitting seamlessly into the workflow.

The benefits of a well-integrated crane include:

• Smooth handling of panels, reducing the risk of breakage.
• Lower chance of operator injuries.
• Steady flow across cutting, laminating, stacking, and packaging stations.
• Simplified operations for downstream processes like assembly and shipping.

Dual trolleys provide greater adaptability to different loads. PV modules aren't always uniform in size, and production lines often have to handle bundles of panels, jigs, or other materials that require precise lifting points. Being able to adjust each trolley's position allows operators to lift uneven or irregular loads safely, reducing the risk of damage.

• Precise load positioning: Trolleys can be moved independently to align perfectly with the panel's center of gravity.
• Accommodates irregular or bulky panels: Handles larger bundles without putting stress on the crane or modules.
• Reduces handling errors: Less chance of misalignment or collisions during transfers.
• Supports multiple applications: Useful for stacking, sorting, or moving modules to inspection and packaging stations.

Dual-trolley cranes are designed for continuous operation, even during maintenance or minor repairs. If one trolley requires inspection, the other can continue to operate, ensuring the production line isn't halted. For high-throughput PV module factories, even small interruptions can cause bottlenecks and reduce overall output.

• Maintenance without stopping production: One trolley remains operational while the other is serviced.
• Minimized workflow disruption: Keeps modules moving, reducing stress on operators and downstream processes.
• Higher reliability: Production managers can plan routine inspections without affecting throughput.
• Cost savings: Less downtime means more panels produced per shift and fewer labor hours wasted.

Space in PV module production facilities is often limited, and ceiling-mounted cranes must navigate between machines, workstations, and storage areas. Dual-trolley cranes can cover wide spans efficiently while avoiding interference with other equipment. This makes them ideal for dense, high-capacity production layouts.

• Maximized workshop space: Wide coverage allows fewer cranes to handle more modules.
• Efficient workflow integration: Modules move along optimized paths without blocking other machines.
• Reduced need for extra equipment: A single dual-trolley crane can replace multiple single-trolley cranes or forklifts.
• Safer operations: By keeping lifts predictable and organized, the crane reduces congestion and potential hazards.

A double girder structure provides high rigidity and stability, which is especially important for long spans in large workshops. Unlike single girder cranes, double girders minimize vibration and sway, ensuring modules remain steady during movement.

• Stable lifting over long distances, even at full load.
• Reduced risk of module damage caused by sway or vibration.
• Supports dual-trolley operation without compromising safety or precision.
• Ideal for wide workshop layouts in high-capacity PV production lines.

Modern cranes come with advanced control systems to make handling safer and more accurate. Operators can use remote control or cabin operation, with smooth start and stop functions and anti-sway technology to prevent sudden jolts.

• Precise positioning of panels on stacking, laminating, or assembly stations.
• Reduced risk of accidental collisions with machinery or other modules.
• Smooth motion improves safety for operators and prevents material damage.
• Flexible operation modes to suit different line layouts and operator preferences.

Safety is critical in high-volume PV production. Dual-trolley cranes are equipped with multiple safety systems, including:

• Overload protection, preventing lifting beyond capacity.
• Emergency stop systems for instant shutdown if needed.
• Trolley collision prevention, ensuring trolleys don't interfere with each other during simultaneous operations.

• Protects both operators and PV modules.
• Reduces risk of costly production stoppages.
• Meets regulatory safety standards for industrial lifting equipment.

High-capacity production lines need cranes that are reliable day in and day out. This crane is designed for easy inspection, maintenance, and component replacement, allowing continuous operation without significant downtime.

• Simple access for routine checks and lubrication.
• Reduces unplanned downtime from mechanical issues.
• Extends crane lifespan and keeps operational costs manageable.
• Supports continuous high-volume operation, essential for fast-moving PV lines.

With two trolleys, the crane can perform simultaneous tasks, boosting throughput without adding more equipment. One trolley can transport finished modules while the second prepares raw panels for the next stage.

• Minimizes idle time between lifts, keeping the production line flowing.
• Allows continuous operations even during high-demand periods.
• Reduces congestion on the shop floor, as multiple modules can move simultaneously.
• Provides flexibility to handle different module sizes or batch requirements at the same time.

Ceiling-mounted double girder cranes save floor space and provide clear pathways for operators and other machinery. Proper placement ensures the crane enhances rather than disrupts workflow.

• Maximizes available workshop space without interfering with other equipment.
• Keeps production paths organized and predictable, reducing collisions.
• Simplifies movement of modules along cutting, laminating, stacking, and packaging lines.
• Supports future layout changes or line expansions without major crane adjustments.

By handling panels mechanically, the crane reduces the need for human lifting, which protects both operators and modules. This is particularly important in high-capacity PV production where panels are heavy and fragile.

• Protects workers from injuries caused by repetitive lifting or awkward loads.
• Reduces panel damage caused by improper handling or accidental drops.
• Improves overall safety and efficiency on the production floor.
• Supports consistent workflow even during peak production periods.

Investing in a high-capacity crane can save money in multiple ways. Handling modules mechanically reduces the chance of damage, decreases labor costs, and minimizes downtime caused by slow manual movement.

• Lower risk of panel breakage, which can be expensive in high-volume lines.
• Fewer labor hours spent moving heavy panels manually.
• Less downtime due to module misplacement or inefficient transport.
• Improved overall return on investment over the crane's lifespan.

PV module production lines are constantly evolving, with larger panels and higher throughput becoming standard. A dual-trolley crane is built to adapt to future demands, allowing factories to expand or reconfigure workflows without major upgrades.

• Handles larger modules or heavier bundles as production scales.
• Flexible trolley operation supports changing workflow needs.
• Reduces the need for additional lifting equipment in the future.
• Ensures long-term usability and consistent production performance.

Every PV production line has unique challenges, and a standard crane may not meet all requirements. Considering customization can optimize safety and efficiency.

• Dual-speed hoists for handling both heavy bundles and single panels efficiently.
• Anti-sway systems to reduce load movement and protect delicate PV modules.
• Protective covers to handle dust, humidity, or outdoor environments safely.
• Remote or cabin controls to match operator preferences and workflow layout.

A crane is a long-term investment. Understanding the potential return on investment helps justify the purchase and plan budgets.

• Compare crane cost versus efficiency gains from faster handling.
• Calculate savings from reduced module damage and fewer replacements.
• Factor in labor savings from minimized manual handling.
• Consider long-term flexibility—whether the crane can adapt to larger modules or future line expansions.

The 20-ton capacity allows the crane to lift large panels or multiple modules in one go, minimizing manual handling and cycle time. The double girder design ensures stability over long spans, reducing sway and vibration while moving heavy loads. Combined with dual-trolley operation, it keeps modules moving continuously, even during maintenance or when handling multiple batches simultaneously.

Safety is built into every aspect of a dual-trolley crane. Key features include:

• Overload protection to prevent lifting beyond capacity
• Anti-sway systems for stable load movement
• Emergency stops for immediate shutdown if needed
• Precision controls for smooth start/stop and accurate positioning

These features protect both the PV modules and operators while ensuring smooth workflow and reduced risk of damage or injury.

Integration begins with assessing your line layout and module flow. A dual-trolley crane can:

• Move modules between laminators, stacking, and packaging stations
• Operate trolleys in parallel for raw and finished modules
• Reduce reliance on forklifts or manual labor, keeping the line organized and safe

Proper planning ensures the crane enhances workflow rather than disrupting it, maximizing throughput and operational efficiency.

Before buying, production managers should evaluate:

• Span and lifting height to cover all stations
• Load requirements for current and future module sizes
• Trolley speed and control options for workflow compatibility
• Customization options like anti-sway systems, dual-speed hoists, and protective covers
• ROI assessment: cost versus efficiency gains, labor savings, and reduced module damage

This ensures the crane meets both current production needs and future scalability.