Explosion-proof performances of all motors and electric components of QB explosion-proof crane satisfy standards stipulated by GB3836.2 Explosion-proof Electric Equipment Working in Explosive Gas Envircmment Part2: Flame-proof Type"D",and the performance of the crane satisfies demands in JB/T5897 Explosion-proof Crane. 

The crane has obtained Explosion-proof Certificate after passing examinations by units designated by the government to test explosion-proof products. The explosion-proof marks are Exd II BT4 and Exd II CT4 respectively. This product is suitable for areas where the explosion,transmission is not higher than ll B or ll C and the ignition temperature group of inflammable gas or explosive mixture of steam and gas is not lower than T4. Applicable dangerous zones are zone 1 and zone 2(please refer to GB3836.1 for details). This product is generally controlled on the ground,but control from the driver' s cabin is also allowable.

Main Features

1. Minimum IP55 for electrical enclosure

2. All crane motors are equipped on the overhead crane with insulation class F and Temperature Rise Class B to provide a longer operational life span

3. Electronic overload protection c/w warning horn.

4. Noise level below 85 dB(A) at full load

5. Two speed control via pole changing for the hoisting motion, inverter control for trolley and bridge motion for smooth and precise operation.

6. Thermal protection for pole-changing and 3 PTC thermistors for inverter drive.

7. Crane rake with asbestos-free lining which activates automatically in case of power failure.

Explosion Proof Crane Design Standard:

1. Design rules for cranes GB/T3811-2008

2. Safety rules for lifting appliances GB6067.1-2010

3. Explosion-proof bridge cranes JB/T5897-2006

4. Explosion-proof beam crane JB/T10219-2011

5. Explosive gas environment used electrical equipment part 1: General requirement

6. Explosive gas environment used electrical equipment part 2. Flame-proof type”d”

Safety is the most important issue for cranes. 

Our safety device for QB type overhead crane: overload limiter, limit switch (lifting and traveling), interlock protection device, buffer, overhaul cage, rail clear plate, protective cover, bus bar prevent plate, anti-collision device, main isolating switch, emergency stop system, motor overload protection, and others you required.

This product is suitable for areas where the explosion. transmission is not higher than Il B or Il C and the ignition temperature group of inflammable gas or explosive mixture of steam and gas is not lower than T4. Applicable dangerous zones are zone 1 and zone 2.

QB Double girder overhead crane use stainless steel or nylon crane wheels to avoid the flame by friction. Besides, all the components in electrical system is of high safety by conforming to national and international standards. Henan Mine explosion overhead crane is provided with the highest level of safety, quality and reliability, which is required for hazardous environments such as oil refineries, petrochemical, paint industries, gas power plants etc.

The QB Double Girder Overhead Crane is specifically designed for use in hazardous environments where safety and reliability are paramount. It is suitable for applications in areas classified 

as having an explosion risk, where the explosion transmission is not higher than Il B or Il C. Additionally, this product is ideal for environments where the ignition temperature group of 

flammable gases or explosive mixtures of vapors and gases does not fall below T4. The designated hazardous zones for its operation include Zone 1 and Zone 2.

In detail, this crane is engineered to meet the demands of industries such as oil refineries, petrochemical plants, paint manufacturing facilities, and gas power plants. These sectors are 

particularly vulnerable to explosive atmospheres and require stringent safety measures to prevent ignition sources.

One of the key features of the QB Double Girder Overhead Crane is the use of stainless steel or nylon crane wheels. This design choice effectively mitigates the risk of fire from friction, a 

common concern in explosive environments. Furthermore, all components within the electrical system adhere to high safety standards that conform to both national and international 

regulations, ensuring a robust safety profile.

By providing superior safety, quality, and reliability, the Henan Mine Explosion Overhead Crane is an essential tool for handling materials in dangerous situations. It allows operators to move 

heavy loads with confidence, knowing that they are utilizing equipment specifically built for safety in challenging conditions. Overall, the QB Double Girder Overhead Crane stands as a 

reliable solution for industries that demand rigorous safety standards while facilitating efficient operations in hazardous settings.