5 Explosion-Proof Overhead Cranes: Maximum Safety in Hazardous Workspaces

Explosion-proof overhead cranes have three major categories, one is suitable for use in coal mine gas gas explosive gas environment, one is in addition to coal mine gas gas other than explosive gas environment (Class II), the other is suitable for use in addition to coal mines other than explosive dust environment (Class III). These three types of explosion-proof crane explosion-proof principle is basically the same, but adapted to the use of different environments, explosion-proof technology is also different. Explosion-proof overhead cranes can be used with explosion-proof wire rope hoists.

All kinds of explosion-proof overhead cranes produced by our company are designed, manufactured and accepted in strict accordance with the following national standards:

• GB/T 3811-2008    《Design rules for cranes》 
• GB/T 6067-2010  《Safety rules for lifting appliances》
• GB/T 3836.1-2021 《Atmósferas explosivas - Parte 1: Equipo - Requisitos generales》;
• GB/T 3836.2-2021  《Explosive atmospheres-Part 2: Equipment protection by flameproof enclosures “d”》；
• JB/T 10219-2011  《Explosion-proof cranes with electric hoist》
• JB/T 5897-2014  《Explosion-proof overhead traveling cranes》

Various types of explosion-proof bridge cranes are examined and tested by the National Center for Supervision and Inspection of Explosion-Proof Electrical Product Quality, and the explosion-proof cranes are issued with certificates of conformity after the final test.

Explosion-proof environment

Explosion-proof cranes are suitable for use in explosive gas environments Zone 1 and Zone 2 or combustible dust environments Zone 21 and Zone 22.

Class II explosion-proof crane explosion-proof level and the corresponding temperature group applicable explosive gases are listed below:

Dust class explosion-proof cranes each anti-dust structure form and the corresponding temperature groups of combustible dust to adapt to the following table: