OVERHEAD CRANE

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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

Petrochemical & Chemical: Production and storage areas with explosive gases or vapors.
Military & Munitions: Safe handling of explosives and ammunition.
Dust-Explosive Industries: Flour mills, grain processing, and pharmaceutical cleanrooms.
Paint & Coating Plants: Environments with highly flammable solvents.
Coal & Mining: Surface facilities with methane gas or combustible dust.

ADVANTAGES

Comprehensive Explosion-proof Safety: All motors, hoists, and electrical components feature flameproof enclosures (ExdIIBT4/IICT4) to prevent sparks or arcs.
Higher Load Capacity & Lifting Height: The double-girder design distributes weight evenly, supporting larger spans and higher hook approaches than single-girder models.
Compact & Low Maintenance: Equipped with a standard electric hoist, offering a compact structure, lighter dead weight, and easier maintenance than traditional winch trolleys.
Smooth & Precise Operation: Anti-static materials prevent static electricity. Optional VFD (Variable Frequency Drive) ensures smooth starts/stops and precise positioning.
Rugged & Durable: Built for heavy-duty cycles (A3-A5) with reliable braking systems, suitable for demanding hazardous environments.

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

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