OVERHEAD CRANE

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Single-Girder Bridge Grab Crane

Double Girder Overhead Crane

Explosion-proof Double-girder Bridge Crane

Single Girder Hoist Overhead Crane

LB Type Explosion-proof Electric Single Girder Crane

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Capacity:

1 t – 20 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:

A4, A5, A6

Explosion-proof Level:

Ex d IIB T4 / Ex d IIC T4 / Ex tD A21 IP65 T135°C (customizable based on hazardous zone classification)

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Introduction

Application Scenario

Advantages

Structural Diagram And Parameter Table

INTRODUCTION

The LB Type Explosion-Proof Electric Single Girder Crane is a light-to-medium duty overhead bridge crane designed for hazardous environments containing explosive gases or combustible dusts. It features a single main girder (box beam or I-beam) and utilizes a certified explosion-proof electric hoist (such as Model BCD or HB) traveling along the bottom flange.

APPLICATION SCENARIO

[1] Chemical Plants – Lifting chemical drums, raw material bags, reactors, and equipment in areas with flammable gas hazards such as ethylene, propylene, or methanol vapors. Single girder design fits standard chemical plant buildings.

[2] Oil Refineries – Handling pumps, valves, heat exchangers, and maintenance equipment in refining units with hydrocarbon gas hazards. Cost-effective solution for secondary areas.

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

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

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

[6] Printing and Packaging Plants – Lifting ink drums, solvent containers, and printing rollers in areas with flammable solvent vapors from printing processes.

ADVANTAGES

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

[2] Cost-Effective – 30%-40% lower cost than explosion-proof double girder cranes.

[3] Compact Headroom – Bottom-running hoist design maximizes lifting height under limited building clearance.

[4] Fast Installation – Lightweight structure allows quick installation with minimal building modification.

[5] Easy Maintenance – Modular explosion-proof hoist allows quick component replacement.

[6] Flexible Explosion-proof Ratings – Available for gas (Ex d IIB/IIC) or dust (Ex tD) environments.

STRUCTURAL DIAGRAM AND PARAMETER TABLE

Parameter	Specification
Working Class	A4, A5, A6
Capacity	1 t – 20 t
Span	7.5 m – 22.5 m
Lifting Height	6 m – 18 m
Lifting Speed	4 – 12 m/min
Trolley Travelling Speed	20 – 35 m/min
Crane Travelling Speed	20 – 45 m/min
Explosion-proof Level	Ex d IIB T4 / Ex d IIC T4 / Ex tD A21 (customizable)
Temperature Class	T1 – T6 (customizable)
Power Supply	380V / 50Hz / 3-phase
Control Method	Explosion-proof pendant / Explosion-proof remote radio / Cabin with purge system
Suitable Zones	Gas: Zone 1, Zone 2 / Dust: Zone 21, Zone 22
Hoist Type	CD explosion-proof hoist / MD explosion-proof hoist
Girder Type	Single girder – I-beam or box-section with bottom-running explosion-proof hoist

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.