Double Girder Overhead Crane

Introduction to Double Girder Overhead Cranes

A double girder overhead crane is a robust material handling equipment designed to lift and transport heavy loads in industrial settings. Engineered with two parallel main girders, it delivers superior stability and load-bearing capacity compared to single girder models, making it the go-to choice for heavy-duty applications such as steel mills, виробничі підприємства, склади, та будівельні майданчики. Whether you need to move machinery, сировина, or finished products, our double girder overhead cranes combine precision, міцність, and safety to optimize your workflow.

What is a Double Girder Overhead Crane?

A double girder overhead crane is a type of bridge crane consisting of two horizontal main girders supported by end trucks (or end carriages) that run along elevated rails (злітно-посадкові смуги) mounted on building columns or standalone structures. The crane’s lifting mechanism—typically a hoist or trolley—is mounted on a trolley that travels along the length of the main girders, allowing 360° coverage of the workspace below.

Unlike однобалочні мостові крани, which rely on a single main beam, double girder designs distribute weight more evenly, enabling them to handle much heavier loads (often up to 500 тонн і більше). This makes them essential for industries requiring frequent heavy lifting, where reliability and safety are non-negotiable.

Key Features of Double Girder Overhead Cranes

Our double girder overhead cranes are built to excel in demanding environments. Here are their standout features:

• 1. Висока вантажопідйомність: Designed to handle heavy loads from 10 tons up to 500 тонн, making them ideal for heavy-industry applications.
• 2. Superior Stability: Two main girders distribute weight evenly, reducing sway and ensuring stable operation even with maximum loads.
• 3. Extended Span Options: Available with spans from 10 метрів до 35 метри, adaptable to large workspaces like warehouses or factory floors.
• 4. Контроль точності: Equipped with advanced hoisting and trolley mechanisms for smooth, accurate positioning of loads—critical for delicate or high-value materials.
• 5. Міцна конструкція: Made from high-strength steel with anti-corrosion coatings, ensuring long-term performance in harsh conditions (Напр., високі температури, пил, or moisture).
• 6. Посилена безпека: Integrated safety features include overload protection, кнопки аварійної зупинки, кінцеві вимикачі, and anti-collision devices to prevent accidents.
• 7. Настроюваний дизайн: Can be tailored with optional extras like remote control, frequency inverters for variable speed, or specialized hooks for unique load types (Напр., котушки, контейнери).

Технічні характеристики

Structure of a Double Girder Overhead Crane

A double girder overhead crane consists of several key components working together to ensure efficient lifting and movement:

1. Main Girders

Main Girders

Two parallel steel beams (прогони) that form the bridge structure. They bear the load of the trolley and the lifted material, requiring high strength and rigidity.

2. Кінцеві вантажівки (Кінцеві вагони)

Кінцеві вантажівки

Mounted at both ends of the main girders, these house the wheels and motors that drive the crane along the runway rails.

3. Візок

Візок

A movable unit that travels along the top or bottom of the main girders. It carries the hoist and is powered by its own motor for horizontal movement.

4. Підйомник

Підйомник

The lifting mechanism, including a crane drum, wire rope/cable, і гачок. It is responsible for raising and lowering loads, with options for electric or hydraulic operation.

5. Електрична система

Електрична система

Includes motors, панелі керування, switches, and wiring to power and operate the crane, візок, і підйомник.

6. Запобіжні пристрої

Обмежувач висоти підйому

Overload limiters, кінцеві вимикачі ходу, системи аварійної зупинки, and anti-sway devices to ensure safe operation.

Поширення: Double Girder Overhead Crane

Q1: What’s the difference between a double girder and single girder overhead crane?

A: Double girder cranes have two main girders, offering higher load capacity (10+ тонн) і стабільність, making them suitable for heavy-duty use. Single girder cranes have one main girder, are lighter, and better for lighter loads (до 10 тонн) in smaller workspaces.

Q2: Which industries use double girder overhead cranes?

A: They are widely used in steel mills, automotive manufacturing, верфі, будівельні майданчики, склади (for heavy pallet handling), and power plants.

Q3: How often should a double girder overhead crane be maintained?

A: Routine inspections (daily checks for wear, мастило) and professional maintenance (every 6–12 months) are recommended to ensure safety and longevity.

Q4: Can double girder cranes be customized for specific applications?

A: Так. We offer customizations for load capacity, проліт, висота підйому, системи управління, and specialized attachments (Напр., magnets for metal handling, grabs for bulk materials).

Q5: Are double girder overhead cranes compliant with international safety standards?

A: Our cranes meet ISO, Фем, і стандарти OSHA, with built-in safety features to ensure compliance with global industrial regulations.

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