PRODUCTS & CASES

The Double Girder Explosion-Proof Overhead Crane is a specialized heavy-duty lifting unit engineered exclusively for high-risk work zones filled with flammable gas, combustible dust and explosive substances. It delivers fail-safe material handling performance for industrial scenarios that demand ultra-rigorous safety protocols and certified explosion-proof capabilities.

Standards & Explosion-Proof Grade

All motors and electrical components strictly comply with GB3836.2-2000 flameproof enclosure standards for explosive gas environments.

The whole machine is designed and manufactured in full accordance with JB/T5897-2006 industrial specifications for explosion-proof overhead lifting equipment.

Available explosion-proof grades: Exd IIB T4, Exd IIC T4.

Main Structure

Main Girder

Constructed with high-strength anti-corrosion alloy steel and explosion-proof qualified materials, the main beam effectively eliminates static accumulation and spark generation risks. Adopting automatic submerged arc welding technology, the integral structure features flawless welding quality and exceptional mechanical stability for long-term hazardous-site operation.

Electric Trolley

Equipped with an I-beam based cable power supply system, the trolley ensures stable, secure power transmission during reciprocating travel, minimizing potential electrical hazards in explosive working environments.

Electrical System

Fully fitted with flameproof motors, sealed explosion-proof electrical modules and explosion-proof limit switches. The fully enclosed structural design isolates internal electric arcs and sparks from external flammable media, completely preventing explosion-triggering risks.

• Chemical Industry: Safe hoisting and transportation of inflammable, volatile and explosive chemical raw materials and finished products.

• Oil & Gas Sector: Adaptable to operational sites with concentrated flammable gas and liquid petroleum substances.

• Pharmaceutical Industry: Supports clean, contamination-free and risk-free production and material handling processes.

• Coal Mining Industry: Specially optimized for dusty underground mining environments requiring strict explosion-proof protection.

Weihua Crane provides fully personalized QB-type explosion-proof overhead crane solutions tailored for classified hazardous locations. Our customized systems guarantee stable, efficient and zero-risk lifting operations in gas and dust explosive atmospheres.

All core technical indicators including lifting capacity, working span, lifting height, operational duty class and explosion-proof grade can be adjusted on demand to satisfy strict industrial safety standards. Custom configurations perfectly fit the harsh working conditions of chemical plants, oil & gas bases and other high-risk production workshops.

Optional Configurations

• Premium Ex d / Ex e explosion-proof motors and sealed electrical assemblies

• Explosion-proof wireless remote control and cabin operating systems

• Variable frequency drive system for shock-free, steady traveling and lifting

• Multi-layer safety protection and real-time overload monitoring system

• Global ATEX and IECEx certified explosion-proof structural design

Our professional engineering team delivers highly reliable, industry-compliant customized lifting solutions, ensuring maximum operational safety and stable productivity for high-risk explosive industrial environments.