QD Double Girder Overhead Crane With Winch Trolley

The QD Double Girder Overhead Crane is a heavy-duty bridge crane designed for high-capacity lifting and continuous industrial operations. At YuantaiCrane, our QD Double Girder Overhead Crane is engineered with two parallel girders, a robust trolley system, and a high-performance hoisting mechanism. This configuration allows you to lift heavier loads, achieve greater lifting heights, and operate with higher stability compared to single girder cranes. The crane runs on rails installed on runway beams. A winch trolley moves along the double girders. The entire system provides precise and efficient material handling across large industrial spaces. If your project involves heavy equipment, steel materials, or continuous production lines, this crane is a reliable solution.

Key Features of QD Double Girder Overhead Crane

The QD double girder overhead crane is designed for heavy-duty lifting in demanding industrial environments. It combines strong structure, high lifting capacity, and stable performance. You can use it in industries such as steel production, machinery manufacturing, power plants, and large workshops. This type of crane is a reliable solution when you need to move heavy loads safely and efficiently over long spans.

1. High Load Capacity of QD Double Girder Overhead Crane

Yuantai QD Double Girder Overhead Crane is built for handling heavy loads with ease. It typically supports lifting capacities from 5 tons up to 500 tons or even higher, depending on your project requirements. This wide range allows you to choose the right configuration based on your actual lifting needs. If you work in steel mills, precast concrete plants, or large manufacturing facilities, this crane can handle bulky and heavy materials without difficulty.

2. Robust Structure

A double-girder structure provides robust support and stability during crane operation. Compared to single-girder cranes, this design reduces girder deflection and keeps the load stable during hoisting and travel. The sturdy design also allows for greater spans and higher lifting heights, offering greater flexibility for your workshop layout. Combining strength and reliability, this structure ensures long-term durability.

3. Smooth and Precise Control

The crane is equipped with modern control systems that make operation simple and accurate. You can choose cabin control if you prefer a clear view and full control, pendant control for close-range operation, or remote control for greater flexibility and safety. Each option is designed to give you smooth movement and precise positioning of the load. This helps reduce the risk of accidents and improves handling efficiency, especially when you are working in busy or complex environments.

4. Long Service Life

Yuantai uses high-quality steel and dependable components to ensure the crane lasts for many years. Key parts such as motors, gearboxes, and electrical systems are selected for durability and stable performance. The structure is also treated to resist wear and corrosion, which is important in harsh working conditions.

QD Double Girder Overhead Crane With Winch Trolley Specifications

Components of QD Double Girder Overhead Crane

A QD double girder overhead crane is designed for heavy-duty lifting tasks in industries such as manufacturing, steel production, and warehousing. Each main component plays a clear role in ensuring safe, stable, and efficient operation.

1. Main Girder of QD Double Girder Overhead Crane

The crane uses two box-type girders, which form the main load-bearing structure of the entire system. This design offers high strength and excellent rigidity, so the crane can handle heavy loads without bending or twisting. The box structure also helps distribute stress evenly, which reduces fatigue over time.

2. Winch Trolley

The winch trolley is the core lifting mechanism and directly affects lifting performance and efficiency. It includes key parts such as the drum, motor, brake, wire rope, and hook block, all working together to lift and lower loads smoothly. The motor provides the driving force, while the drum winds the wire rope in a controlled way. The brake ensures precise stopping and holding, even under full load. A well-designed winch trolley gives you strong lifting capacity, smooth movement, and accurate positioning, which is especially important when handling heavy or valuable materials.

3. End Carriages of QD Overhead Crane

End carriages are installed at both ends of the main girders and support the entire crane as it travels along the runway beams. They play a key role in maintaining balance and ensuring smooth horizontal movement. High-quality wheels and bearings reduce friction and wear, which helps extend the service life of both the crane and the rails.

4. Electrical System

The electrical system controls and protects the crane during operation, making it one of the most important parts for safety and usability. It includes components such as the control cabinet, limit switches, safety protection devices, and frequency converters. The control cabinet manages all electrical functions, while limit switches prevent over-travel and reduce the risk of accidents. Frequency converters allow smooth speed adjustment, which helps you achieve precise control during lifting and traveling. With a reliable electrical system, you can operate the crane more safely, reduce the chance of downtime, and improve overall working efficiency.

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