QB type explosion-proof hoist double-girder overhead crane

The QB explosion-proof hoist double-girder bridge crane is a lifting equipment specifically designed for flammable and explosive environments. Based on standard cranes, it incorporates special explosion-proof treatments on key components such as motors and electrical devices. It effectively prevents explosions caused by sparks or high temperatures, making it particularly suitable for industries with stringent safety requirements like petroleum, chemical, and coal.

The explosion-proof performance of all motors and electrical components of the QB explosion-proof bridge crane complies with GB3836.2-2000 “Electrical Apparatus for Explosive Gas Atmospheres Part 2: Flameproof Enclosure ‘d’,” and the overall performance complies with the regulations of JB/T5897-2006 “Explosion-proof bridge cranes.” It has passed inspection by a nationally designated explosion-proof product inspection authority and obtained the “Explosion-proof Certificate.” The explosion-proof markings are ExdⅡBT4 and ExdⅡCT4.

Components

• Main Girder and End Carriages: Double-girder structure, welded from high-quality steel, optional anti-corrosion coating treatment;
• Explosion-proof Electric Hoist or Lifting Mechanism: Core components comply with explosion-proof specifications, lifting capacity up to 5~100 tons or more;
• Travel Mechanism: Includes explosion-proof drive motor, explosion-proof brake, reducer;
• Electrical Control System: Explosion-proof electrical control box, cables, explosion-proof switches, explosion-proof lighting system;
• Safety System: Explosion-proof limiter, anti-collision device, load limiter, etc.

Explosion-proof Hoist Selection

Based on the actual application environment of the lifting equipment, we recommend the most suitable type of explosion-proof electric hoist to help your enterprise improve operational efficiency and maintenance convenience.

• Explosion-proof Wire Rope Electric Hoist: Uses high-strength steel wire rope, offering good stability and durability. With two-speed switching function, fast and slow modes can be switched during lifting as needed, suitable for applications requiring precise positioning and flexible lifting, such as precision equipment installation, handling easily swayed materials, etc.

• Low Headroom Explosion-proof Electric Hoist: Designed specifically for factories with limited lifting space or work areas with restricted structural height. The compact structure effectively reduces the overall machine height and improves lifting height utilization. Suitable for special environments like cleanrooms, laboratories, and underground pipeline corridors.

• New Chinese Style Explosion-proof Electric Hoist: Adopts a modular design featuring intelligent monitoring, variable frequency drive, and automatic fault diagnosis. This hoist offers advantages such as high protection等级, low noise, and long service life, widely used in heavy-duty, high-frequency operations or smart factory scenarios.

Applications

 The QB explosion-proof double-girder bridge crane, with its excellent explosion-proof performance and reliability, is an ideal solution for material handling in hazardous areas. It is widely used in various industrial environments requiring high safety levels. Below are its typical application industries and scenarios:

• Oil Refineries: Used for hoisting crude oil storage tanks and refining equipment.
• Chemical Production Workshops: Handling containers and equipment for flammable gases and chemicals.
• Natural Gas Stations and Filling Stations: Installation work for pressure vessels or pipelines.
• Pharmaceutical Industry: Used in cleanrooms where dust or organic solvents may be present.
• Military and Ammunition Warehouses: High-risk material handling environments requiring strict explosion-proof requirements.

 Explosion-proof double-girder bridge cranes can be further divided into various types based on different structural forms, usage scenarios, and control methods. Different types of explosion-proof bridge cranes can adapt to different loads, operating frequencies, and environmental risks. Weihua can customize the structure, explosion-proof等级, protection design, operation mode, etc., according to customer working conditions. Below are the classifications, features, and typical application scenarios of the main types, facilitating reasonable selection based on actual needs. Please check the following types: