Mostový žeriav

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Čo je mostový žeriav?

Mostový žeriav

An overhead bridge crane is a heavy-duty material handling equipment designed to lift, pohybovať sa, 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, požiadavky na zaťaženie, a podmienky prostredia, making them indispensable in manufacturing, logistiky, and heavy industries.

Key Features of Overhead Bridge Cranes

Mostový žeriav

Overhead bridge cranes are engineered for reliability, efektívnosť, a bezpečnosť. Here are their core features:

1. Vysoká nosnosť: Designed to handle loads ranging from 1 ton to over 500 ton, suitable for light to ultra-heavy lifting tasks.
2. Precise Control: Equipped with advanced hoist and trolley systems (manuál, elektrický, or hydraulic) for smooth, accurate load positioning—critical for delicate operations like machinery assembly.
3. Odolná konštrukcia: Built with high-strength steel girders, reinforced runways, and corrosion-resistant components to withstand harsh environments (napr., vysoké teploty, prach, or humidity).
4. Súlad s bezpečnosťou: Integrated safety features include overload protection, tlačidlá núdzového zastavenia, koncové spínače, and anti-collision systems, meeting global standards (OSHA, ISO, FEM).
5. Priestorová efektívnosť: 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, výška zdvihu, power sources (elektrický, diesel), a automatizácia (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

Mostový žeriav s dvojitým nosníkom

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

Funkcia	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.
Kapacita zaťaženia	Až do 20 ton (štandardná); 50 ton (heavy-duty models).	20 tons and above (commonly 50–500+ tons).
Dĺžka rozpätia	Ideal for spans up to 30 metrov.	Suitable for longer spans (až do 50+ metrov).
Výška zdvihu	Moderate (limited by single girder strength).	Higher lifting heights (extra clearance due to dual girders).
náklady	More affordable (simpler design, lower material use).	Vyššie počiatočné náklady (sturdier build, larger components).
Najlepšie pre	Light to medium loads; small to medium facilities (napr., workshopy, sklady).	Heavy loads, large spans, or harsh environments (napr., oceliarne, lodenice).

Technical Specifications of Overhead Bridge Cranes

Mostové žeriavy

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	Dĺžka rozpätia	Výška zdvihu	Robotnícka trieda (ISO/FEM)*	Napájanie	Rýchlosť zdvihu
Single Girder (Štandardné)	1– 20 ton	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 (Štandardné)	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	Vlastné (diesel/electric)	0.1–4 m/min

Robotnícka trieda: 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

Mostové žeriavy

Overhead bridge cranes are versatile across sectors requiring heavy material handling. Medzi kľúčové aplikácie patrí:

1. Výroba: Moving raw materials (oceľ, aluminum) and finished products on assembly lines (automobilový priemysel, kozmonautika, strojov).
2. Skladovanie & Logistika: Loading/unloading cargo, stohovanie paliet, and organizing inventory in distribution centers.
3. Hutníctvo: Handling molten metal, ingoty, and rolled steel in foundries and steel mills.
4. Stavebníctvo: Lifting building materials (oceľové nosníky, concrete panels) in prefabrication yards or on-site.
5. Baníctvo: Transporting ore, zariadení, and components in mines or processing plants.
6. Stavba lodí: Assembling large ship parts and moving heavy machinery in dry docks.
7. Waste Management: 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?

Mostové žeriavy

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 (výška zdvihu) to ensure the crane fits.
3. Assess Working Conditions: Consider environmental factors—high temperatures, prach, 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 (napr., 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 & Súlad: Ensure the crane meets local regulations (napr., OSHA in the U.S., CE in the EU) and includes essential safety features.

FAQ: Mostový žeriav

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: áno. 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 portálové žeriavy 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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