Overhead Bridge Crane

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What is an Overhead Bridge Crane?

Overhead Bridge Crane

An overhead bridge crane is a heavy-duty material handling equipment designed to lift, حرکت, and position large or heavy loads horizontally across a fixed span. Suspended from or mounted on elevated runways (typically along the length of a facility), it consists of a bridge structure that travels along these runways, with a hoist or trolley system that moves perpendicular to the bridge—enabling precise, multi-directional load movement.

Widely used in industrial settings, overhead bridge cranes streamline operations, reduce manual labor, and enhance safety when handling weights from a few tons to hundreds of tons. They are customizable to fit specific workspace dimensions, load requirements, و شرایط محیطی, making them indispensable in manufacturing, تدارکات, and heavy industries.

Key Features of Overhead Bridge Cranes

Overhead Bridge Crane

Overhead bridge cranes are engineered for reliability, efficiency, و ایمنی. Here are their core features:

1. High Load Capacity: Designed to handle loads ranging from 1 ton to over 500 تن, suitable for light to ultra-heavy lifting tasks.
2. Precise Control: Equipped with advanced hoist and trolley systems (کتابچه راهنمای کاربر, electric, or hydraulic) for smooth, accurate load positioning—critical for delicate operations like machinery assembly.
3. Durable Construction: Built with high-strength steel girders, reinforced runways, and corrosion-resistant components to withstand harsh environments (به عنوان مثال, high temperatures, dust, or humidity).
4. انطباق ایمنی: Integrated safety features include overload protection, emergency stop buttons, limit switches, and anti-collision systems, meeting global standards (اوشا, ایزو, زن).
5. Space Efficiency: Operates above ground level, freeing up floor space for other equipment or workflows—ideal for facilities with limited ground area.
6. Customizability: Available in single or double girder designs, با گزینه هایی برای طول دهانه, ارتفاع بلند کردن, power sources (electric, diesel), and automation (for unmanned operations).

Single Girder vs. Double Girder Overhead Bridge Cranes: What’s the Difference?

Single girder overhead bridge crane

Double girder overhead bridge crane

Double girder overhead crane

Choosing between single girder and double girder overhead bridge cranes depends on your load requirements, workspace, and budget. Here’s a breakdown:

نشان	Single Girder Overhead Bridge Crane	Double Girder Overhead Bridge Crane
Structure	One main girder (beam) supporting the hoist/trolley.	Two parallel girders with the hoist/trolley running between them.
ظرفیت بار	تا 20 تن (استاندارد); 50 تن (heavy-duty models).	20 tons and above (commonly 50–500+ tons).
طول دهانه	Ideal for spans up to 30 متر.	Suitable for longer spans (تا 50+ متر).
ارتفاع بلند کردن	Moderate (limited by single girder strength).	Higher lifting heights (extra clearance due to dual girders).
Cost	More affordable (simpler design, lower material use).	Higher initial cost (sturdier build, larger components).
Best For	Light to medium loads; small to medium facilities (به عنوان مثال, workshops, انبارها).	Heavy loads, large spans, or harsh environments (به عنوان مثال, steel mills, shipyards).

Technical Specifications of Overhead Bridge Cranes

Overhead Bridge Cranes

Below is a general parameter table for common overhead bridge crane models. Custom specifications are available based on your needs:

Model Type	Max Lifting Capacity	طول دهانه	ارتفاع بلند کردن	طبقه کارگر (ISO/FEM)*	منبع تغذیه	Hoist Speed
Single Girder (استاندارد)	1–20 tons	5–30 m	3–12 m	A3–A5	380V/3Ph/50Hz (custom)	0.5–10 m/min
Single Girder (Heavy-Duty)	20–50 tons	10–25 m	5–15 m	A5–A6	380V/3Ph/50Hz (custom)	0.3–8 m/min
Double Girder (استاندارد)	20–100 tons	10–40 m	6–20 m	A6–A7	380V/3Ph/50Hz (custom)	0.2–6 m/min
Double Girder (Ultra-Heavy)	100–500+ tons	15–50+ m	8–30 m	A7–A8	Custom (diesel/electric)	0.1–4 m/min

طبقه کارگر: Indicates duty cycle (how often the crane operates under load). Higher classes (A7–A8) suit continuous, heavy-use environments.

Industries That Use Overhead Bridge Cranes

Overhead Bridge Cranes

Overhead bridge cranes are versatile across sectors requiring heavy material handling. Key applications include:

1. تولید: Moving raw materials (فولاد, aluminum) and finished products on assembly lines (خودرو, هوافضا, machinery).
2. انبارداری & Logistics: Loading/unloading cargo, stacking pallets, and organizing inventory in distribution centers.
3. Metallurgy: Handling molten metal, شمش, and rolled steel in foundries and steel mills.
4. ساخت و ساز: Lifting building materials (steel beams, پانل های بتونی) in prefabrication yards or on-site.
5. معادن: Transporting ore, تجهیزات, and components in mines or processing plants.
6. کشتی سازی: Assembling large ship parts and moving heavy machinery in dry docks.
7. مدیریت زباله: Handling bulk waste or recycling materials in treatment facilities.

Overhead Bridge Crane Manufacturing Process

overhead bridge crane manufacturing process

How to Choose the Right Overhead Bridge Crane?

Overhead Bridge Cranes

Follow these steps to select the perfect overhead bridge crane for your needs:

1. Determine Load Requirements: Calculate the maximum weight you’ll lift (include margins for future needs) to choose between single (≤20 tons) or double (≥20 tons) girder models.
2. Measure Your Workspace: Check the span (distance between runways) and available headroom (ارتفاع بلند کردن) to ensure the crane fits.
3. Assess Working Conditions: Consider environmental factors—high temperatures, dust, or corrosive substances may require specialized coatings or components.
4. Evaluate Duty Cycle: Choose a working class (A3–A8) based on how often the crane will operate (به عنوان مثال, A7 for 24/7 heavy use).
5. Set a Budget: Single girder overhead cranes are more cost-effective for light tasks; double girder cranes are a long-term investment for heavy loads.
6. Prioritize Safety & رعایت: Ensure the crane meets local regulations (به عنوان مثال, OSHA in the U.S., CE in the EU) and includes essential safety features.

FAQ: Overhead Bridge Crane

Q1: How often should an overhead bridge crane be inspected?

A: Daily visual checks (for wear, leaks, or loose parts) and annual professional inspections are mandatory. Heavy-use cranes (A7–A8) may require quarterly inspections.

Q2: Can overhead bridge cranes be automated?

A: Yes. Modern models can integrate with IoT systems for automated load tracking, scheduled movements, and remote operation—ideal for repetitive tasks.

Q3: What’s the lifespan of an overhead bridge crane?

A: With proper maintenance, single girder cranes last 15–20 years; double girder cranes can operate for 25–30 years or longer.

Q4: How is an overhead bridge crane installed?

A: Installation involves mounting runways to building columns or support structures, positioning the bridge, and integrating the hoist/trolley. Professional installation is recommended for safety.

Q5: What’s the difference between an overhead bridge crane and a gantry crane?

A: Overhead bridge cranes run on elevated runways (attached to a building), while جرثقیل های گانی have ground-supported legs—making gantries better for outdoor or open spaces.

Ready to enhance your material handling efficiency? Contact us for a custom overhead bridge crane solution tailored to your industry and workflow.

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