桥式起重机

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什么是桥式起重机?

桥式起重机

An overhead bridge crane is a heavy-duty material handling equipment designed to lift, move, 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, 和环境条件, making them indispensable in manufacturing, 后勤, and heavy industries.

Key Features of Overhead Bridge Cranes

桥式起重机

Overhead bridge cranes are engineered for reliability, 效率, 和安全. Here are their core features:

1. 高负载容量: Designed to handle loads ranging from 1 吨结束 500 吨, suitable for light to ultra-heavy lifting tasks.
2. Precise Control: Equipped with advanced hoist and trolley systems (手动的, 电的, or hydraulic) for smooth, accurate load positioning—critical for delicate operations like machinery assembly.
3. 耐用的结构: Built with high-strength steel girders, reinforced runways, and corrosion-resistant components to withstand harsh environments (例如, high temperatures, 灰尘, or humidity).
4. Safety Compliance: Integrated safety features include overload protection, 紧急停止按钮, 限位开关, and anti-collision systems, meeting global standards (OSHA, ISO, 女性).
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, with options for span length, 举升高度, power sources (电的, diesel), 和自动化 (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, 和预算. Here’s a breakdown:

特征	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.
负载容量	到 20 吨 (标准); 50 吨 (heavy-duty models).	20 tons and above (commonly 50–500+ tons).
Span Length	Ideal for spans up to 30 仪表.	Suitable for longer spans (到 50+ 仪表).
举升高度	Moderate (limited by single girder strength).	Higher lifting heights (extra clearance due to dual girders).
成本	More affordable (simpler design, lower material use).	初始成本较高 (sturdier build, larger components).
Best For	Light to medium loads; small to medium facilities (例如, workshops, 仓库).	Heavy loads, large spans, or harsh environments (例如, 钢厂, 造船厂).

Technical Specifications of Overhead Bridge Cranes

高架桥起重机

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	Span Length	举升高度	工作级别 (ISO/FEM)*	电源	Hoist Speed
Single Girder (标准)	1–20 tons	5–30 m	3–12 m	A3–A5	380V/3Ph/50Hz (custom)	0.5–10 m/min
Single Girder (重负)	20–50 tons	10–25 m	5–15 m	A5–A6	380V/3Ph/50Hz (custom)	0.3–8 m/min
Double Girder (标准)	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	风俗 (diesel/electric)	0.1–4 m/min

工作级别: 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

高架桥起重机

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

1. 制造业: Moving raw materials (steel, aluminum) and finished products on assembly lines (automotive, 航天, 机械).
2. 仓库 & 后勤: Loading/unloading cargo, stacking pallets, and organizing inventory in distribution centers.
3. Metallurgy: Handling molten metal, 挖掘机, and rolled steel in foundries and steel mills.
4. 建造: Lifting building materials (steel beams, 混凝土面板) in prefabrication yards or on-site.
5. 矿业: Transporting ore, 设备, and components in mines or processing plants.
6. 造船: Assembling large ship parts and moving heavy machinery in dry docks.
7. 废物管理: 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?

高架桥起重机

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 (举升高度) to ensure the crane fits.
3. Assess Working Conditions: Consider environmental factors—high temperatures, 灰尘, 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 (例如, 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 & 遵守: Ensure the crane meets local regulations (例如, OSHA in the U.S., CE in the EU) and includes essential safety features.

常问问题: 桥式起重机

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: 是的. 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 龙门起重机 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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