OVERHEAD CRANE

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Double Girder Overhead Crane

LHB Type Explosion-proof Hoist Double Girder Crane

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This crane is mainly used in chemical plants, oil refineries, paint workshops, gas production facilities, pharmaceutical manufacturing, and other hazardous environments with explosive gases or combustible dust.

Capacity:

1 t – 32 t (customizable)

Lifting Height:

6 m – 20 m (customizable based on building clearance)

Span:

7.5 m – 25.5 m customizable

Voltage/Hertz:

3 Phase 380V 50hz

Working Class:

A4, A5, A6 (Medium to heavy duty)

Explosion-proof Level::

Ex d IIB T4 / Ex d IIC T4 / Ex tD A21 IP65 T135°C

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Introduction

Application Scenario

Advantages

Structural Diagram And Parameter Table

INTRODUCTION

The LHB Type Explosion-Proof Hoist Double Girder Crane is a specialized double-girder overhead crane that utilizes a certified explosion-proof electric wire rope/chain hoist (such as Model HB or BCD) as its lifting mechanism. Designed to operate on top of elevated runway beams, it combines the high structural rigidity and load capacity of a double-girder bridge with a compact, cost-effective flameproof hoist trolley for hazardous industrial environments.

APPLICATION SCENARIO

[1] Chemical Plants – Lifting chemical drums, reactors, mixing vessels, and heavy equipment in areas with flammable gas hazards such as ethylene, propylene, or methanol vapors.

[2] Oil Refineries – Handling pumps, valves, heat exchangers, and heavy maintenance equipment in refining units with hydrocarbon gas hazards.

[3] Paint and Coating Workshops – Lifting paint drums, mixing tanks, spraying equipment, and finished products in solvent vapor environments. Compact design suits low-clearance paint booths.

[4] Pharmaceutical Manufacturing – Handling active pharmaceutical ingredients (APIs), solvent drums, reactors, and equipment in facilities with explosive alcohol or solvent vapors.

[5] Gas Production Facilities – Moving cylinders, heavy equipment, and materials in natural gas processing plants, hydrogen production facilities, or acetylene stations.

[6] Coal Chemical Plants – Lifting equipment and materials in coal gasification, methanol production, and other coal chemical processes with combustible gas risks.

ADVANTAGES

[1] Certified Explosion-proof – ATEX, IECEx, or GB certified for safe operation in hazardous zones.

[2] Compact Double Girder Design – Provides high load capacity (up to 32t) with less headroom than trolley-type cranes.

[3] Lighter Self-weight – 15%-25% lighter than wire rope trolley explosion-proof cranes, reducing building load.

[4] Easier Maintenance – Modular explosion-proof hoist allows quick component replacement.

[5] Smooth Operation – VVVF speed control available for precise positioning of hazardous materials.

[6] Lower Cost – 20%-30% less expensive than traditional explosion-proof trolley cranes.

STRUCTURAL DIAGRAM AND PARAMETER TABLE

Parameter	Specification
Working Class	A4, A5, A6
Capacity	1 t – 32 t
Span	7.5 m – 25.5 m
Lifting Height	6 m – 20 m
Lifting Speed	4 – 10 m/min
Trolley Travelling Speed	20 – 35 m/min
Crane Travelling Speed	20 – 45 m/min
Temperature Class	T1 – T6 (customizable)
Power Supply	380V / 50Hz / 3-phase
Temperature (Ambient)	-20°C to +50°C
Hoist Type	Explosion-proof electric wire rope hoist
Girder Type	Double girder – box-section with explosion-proof hoist mounting

NUCOLLEN CERTIFICATE

Nukollen Possesses A Wide Range Of Complete Certification Documents Including Those For Ships, Port Equipment Factories, Etc. If You Need Them, Please Feel Free To Request The Detailed Certification Files From Us.