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QDY Model Heavy Duty Industrial Bridge Casting Crane for Warehouse Steel Factory

QDY Model Heavy Duty Industrial Bridge Casting Crane for Warehouse Steel Factory
QDY casting crane
QDY model casting overhead crane
heavy duty casting bridge crane
heavy duty casting bridge crane,industrial bridge casting crane
steel factory casting crane
QDY Model Heavy Duty Industrial Bridge Casting Crane for Warehouse Steel Factory
QDY casting crane
QDY model casting overhead crane
heavy duty casting bridge crane
heavy duty casting bridge crane,industrial bridge casting crane
steel factory casting crane
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CCC CE ABS BV CCS
Capacity:(customizable)
Lifting Height:20 m (customizable)
Voltage/Hertz:(customizable)
Brand Name: YUNTIAN
Place of Origin: Henan, China
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Introduction

Technical Data (General Version)

Application

Features

PRODUCT INTRODUCTION

The QDY Model Heavy Duty Industrial Bridge Casting Crane is a specialized overhead lifting solution purpose-built for steel mills, foundries, and metallurgical plants that handle, transport, and pour molten metal in extreme high-temperature environments. Engineered with a four-girder four-rail structure and independent main and auxiliary trolleys, the main trolley carries the primary hook for lifting and pouring steel ladles, while the auxiliary trolley manages ladle tilting, slag pot operations, and auxiliary material handling. All hoisting mechanisms are equipped with dual-drive and dual-braking redundant safety systems, with additional heat shields and thermal radiation protection panels installed to safeguard critical components from radiant heat. The main structural steel is Q345B high-strength steel, with all main welds undergoing non-destructive testing to ensure a minimum 30-year service life. Rated for foundry duty classes A7–A8 with 24-hour continuous operation capability, the entire crane is designed in compliance with FEM, DIN, and CMAA standards for foundry service, and can be supplied with CE, ISO, and other international certifications.

TECHNICAL DATA

parameter

APPLICATION

application
Integrated steel mills and steelmaking plants
application
Foundries, iron casting, and forging facilities
application
Converter charging bays, refining bays, and continuous casting turntable stations
application
Electric arc furnace (EAF) and blast furnace (BF) workshops
application
Secondary metallurgy, ladle refining, and slag handling stations
application
Ferroalloy and non-ferrous metal smelting plants

FEATURES

1
Four-girder four-rail dual-trolley configuration — The main and auxiliary trolleys run on independent rail sets, distributing the load evenly across all four girders and providing exceptional stability under full-capacity hot metal loads. The main trolley handles steel ladle lifting and pouring; the auxiliary trolley manages ladle tilting and slag operations.
2
Safe and redundant hot metal handling — The primary function is transporting and pouring molten steel using ladle hooks and lifting beams. Every hoisting mechanism features dual-drive and dual-braking redundancy: if one drive or brake fails, the other independently and safely lowers the ladle to the ground. All hoist drums, wire ropes, and hook assemblies are rated for high-temperature service with metal-core high-temperature-resistant wire ropes.
3
Fail-safe safety redundancy — Multiple independent braking systems on each hoist, redundant power supplies, emergency lowering capability, and heat shields protect critical components. The main hoist brake utilizes hydraulic-controlled block brakes mounted directly onto the drum for reliable braking performance under extreme conditions.
4
Thermal radiation protection — Heat shields and radiation protection panels are installed between the main girder and the trolley to absorb radiant heat from the molten metal ladle, ensuring electrical enclosures, VFD drives, and PLC control cabinets operate within safe temperature ranges during prolonged hot metal transfers.
5
Fully customizable configuration — Span, lifting height, main and auxiliary trolley capacities, ladle hook type, special spreader design, control mode (cabin, remote, or fully automated), and safety features are all customizable to specific steel mill layout, process requirements, and local compliance standards. Typical main/auxiliary capacities for QDY models range from 5/5t to 320/80t for four-girder configurations.

FAQ

What safety redundancies are engineered into a QDY Model Heavy Duty Industrial Bridge Casting Crane to handle molten metal?

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Handling molten steel and liquid iron requires absolute zero-failure safety designs. Yuntian QDY casting cranes incorporate multi-layer protection systems: Dual Hoist Brakes: The main hoisting mechanism is equipped with two independent mechanical brakes (working brake + safety clamp brake on the rope drum) to prevent load dropping even if one system fails. Redundant Steel Wire Ropes: Features heat-resistant, high-strength steel wire ropes with steel cores. Double-reeving systems ensure the ladle remains stable even if a single rope breaks. Dual Limit Switches: Dual-stage upper lifting limiters (rotary switch + weight-operated limiter) prevent over-hoisting and hook collision.

How does the QDY ladle crane protect its structural and electrical components from extreme radiant heat?

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Operating directly above high-temperature steel ladles (1,500°C+), our metallurgical ladle overhead cranes feature comprehensive thermal shielding: Main Beam Heat Protection: The underside of the main box girder is lined with high-density thermal insulation boards to absorb radiant heat and prevent beam deformation. H-Class Insulated Motors & Cabins: Motors feature Class H/H-grade insulation with temperature monitoring sensors. The operator cabin is fully sealed, double-glazed with heat-reflective tempered glass, and equipped with industrial heavy-duty air conditioning. Fire-Resistant Wiring: All electrical cables use silicone rubber or fluoroplastic fire-retardant sleeves protected inside steel conduits.

What is the difference between a QDY type and a YZ type casting bridge crane?

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Both are specialized foundry overhead cranes, but they differ in structure and tonnage range: QDY Model (Double Girder, Single Trolley): Typically designed for medium-to-heavy capacities (up to 74 tons). It utilizes a single trolley equipped with a main hook for the ladle and an auxiliary hook for tilting the ladle or handling general steel mill goods. YZ Model (Four Girder, Four Track or Double Trolley): Engineered for ultra-heavy ladle lifting (74 tons up to 320+ tons) in large-scale steel making plants, utilizing separate main and auxiliary trolleys on independent girders.

Why is an ISO A7/A8 (FEM 4m/5m) duty rating essential for steel factory casting cranes?

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Steel manufacturing operates on non-stop 24/7 production cycles under extreme mechanical stress and thermal shock: Fatigue Resistance: An A7/A8 heavy-duty rating ensures the bridge structure, end trucks, and gearbox assemblies are engineered for heavy continuous loading without structural metal fatigue or crack formation. Smooth Speed Control (VFD): Variable Frequency Drives (VFD) provide micro-speed positioning, ensuring gentle, shock-free lifting and pouring of liquid steel without dangerous splashing or swaying.

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We are a physical factory that has been engaged in lifting manufacturing for nearly 20 years. Committed to providing all customers with high-quality services and building a long-term future A long-term business cooperation relationship.
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