OVERHEAD CRANE

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LDY Metallurgical Single Girder Crane

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This crane is mainly used in steel mills, foundries, non-ferrous metal smelting plants, heat treatment workshops, and casting facilities.

Capacity:

1 t – 10 t customizable

Lifting Height:

6 m – 18 m (customizable based on building clearance)

Span:

7.5 m – 22.5 m customizable

Voltage/Hertz:

3 Phase 380V 50hz

Working Class:

A6, A7 (Heavy duty for metallurgical applications)

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Introduction

Application Scenario

Advantages

Structural Diagram And Parameter Table

INTRODUCTION

The LDY Type Metallurgical Single Girder Crane is a light-to-medium duty overhead bridge crane specifically designed for molten metal and high-temperature metallurgical applications. Operating on a single girder with a specialized metallurgical electric hoist (such as Model YH), it is engineered with thermal insulation, dual braking systems, and heat-resistant components to handle liquid metal safely within smaller-scale foundries.

APPLICATION SCENARIO

[1] Foundries – Molten Metal Transfer – Lifting and transferring ladles filled with molten iron, steel, aluminum, or copper from melting furnaces to pouring stations. Heat shields protect the hoist from radiant heat. Dual brakes ensure safe holding if power fails.

[2] Steel Mills – Ingot and Casting Handling – Moving hot steel ingots from molds to soaking pits or rolling lines. Reinforced girder handles thermal expansion cycles without distortion. High-temperature cables prevent electrical failures.

[3] Heat Treatment Workshops – Lifting hot components from heat treatment furnaces to quenching tanks or cooling beds. Manual emergency lower function allows controlled descent if power fails mid-cycle.

[4] Non-Ferrous Smelting Plants – Handling molten aluminum, copper, zinc, or lead ladles. The hoist's thermal insulation class H motors (180°C rating) operate reliably in high ambient temperatures near melting furnaces.

[5] Casting Facilities – Mold Handling – Lifting and positioning heavy casting molds, risers, and pouring cups. Shock-absorbing design reduces impact damage to molds during placement. Precise speed control minimizes metal splashing during pouring.

ADVANTAGES

[1] Heat-Resistant Design – Metallurgical-grade hoist with heat shields and high-temperature components operates safely up to +80°C ambient.

[2] Dual Brake System – Primary and secondary brakes provide critical redundancy for molten metal safety.

[3] Manual Emergency Lower – Allows controlled load descent during power failure, preventing metal solidification.

[4] Reinforced Single Girder – Thicker steel and additional stiffeners withstand thermal stress and shock loads.

[5] High Insulation Class – Class H motors rated for 180°C, far exceeding standard crane motors.

[6] Lower Cost than Double Girder – 30%-40% less expensive than double girder metallurgical cranes while meeting safety standards.

STRUCTURAL DIAGRAM AND PARAMETER TABLE

Parameter	Specification
Working Class	A6, A7 (Heavy duty for metallurgical applications)
Capacity	1 t – 10 t
Span	7.5 m – 22.5 m
Lifting Height	6 m – 18 m
Lifting Speed	2 – 8 m/min (slower speed prevents metal splashing)
Trolley Travelling Speed	20 – 35 m/min
Crane Travelling Speed	20 – 45 m/min
Control Method	Heat-shielded cabin / Heat-resistant remote radio / Pendant with high-temp cable
Power Supply	380V / 50Hz / 3-phase
Temperature (Operation)	-10°C to +80°C
Safety Features	Manual emergency lowering, thermal overload protection, high-temp limit switches
Girder Type	Single girder – reinforced box-section with metallurgical-grade hoist

NUCOLLEN CERTIFICATE

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