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

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2 LXB explosion proof single girder underslung crane

LXB Explosion-Proof Single Girder Underslung Crane: Maaasahang Lifting para sa Mapanganib na kapaligiran

LXB explosion-proof single girder underslung crane is used in the working environment where explosive mixtures exist. The structure of its main load-bearing components and LX-type electric single girder underslung cranes are the same.

4 QB explosion proof open winch double girder overhead crane

QB Explosion-proof Open Winch Double Girder Overhead Cranes: Pinakamataas na Kaligtasan sa Mga Mapanganib na Industriya

QB explosion-proof open winch double girder overhead cranes are used in the working environment where explosive mixtures exist. The structural form of its main load-bearing components is the same as that of ordinary double girder bridge cranes.

5 QBE explosion proof double trolley double girder overhead crane

QBE Explosion-Proof Double Trolley Double Girder Overhead Cranes: Precision Lifting for Heavy-Duty Applications

Explosion-proof double trolley double girder overhead crane in the picture is a larger explosion-proof crane equipment in China, used in the aerospace industry.

1 LB explosion proof single girder overhead cranes

LB Explosion-proof Single Girder Overhead Cranes: Tailored for Hazardous Environments

LB electric explosion-proof single girder overhead crane is used in the working environment where explosive mixtures exist. The structure of its main load-bearing components and LD electric single girder overhead cranes are the same.

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 《Mga sumasabog na atmospheres-Bahagi 1: Kagamitan-Pangkalahatang mga kinakailangan》；
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.

Pangkat ng Temperatura		Pinakamataas na pinahihintulutang temperatura sa ibabaw ℃
T_A o T_B	T₁	450
	T₂	300
	T₃	200
	T₄	135
	T₅	100
	T₆	85

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

Explosion-proof na grado	Pangkat ng Temperatura
Explosion-proof na grado	T₁	T₂	T₃	T₄	T₅	T₆
IIA	Ethane, propane, styrene, benzene, xylene, carbon monoxide, acetone, acetic acid, methyl acetate, ammonia, pyridine	Ethanol, butane, propylene, ethyl acetate, methylene chloride, vinyl chloride, chloroethanol, thiophene, cyclopentane, dimethylamine	Pentane, hexane, ethylcyclopentane, turpentine, naphtha, petrolyo (kabilang ang military gasoline), fuel oil, chlorobutane, tetrahydrothiophene	Acetaldehyde, trimethylamine		Ethyl nitrite
IIB	Propyne, acrylonitrile, hydrogen cyanide, coke oven gas	Ethylene, ethylene oxide, methyl acrylate, furans	Dimethyl eter, acrolein, tetrahydrofuran, hydrogen sulfide	Dibutyl eter, diethyl eter, ethyl methyl eter, tetrafluoroethylene
IIC	Hydrogen, tubig gas	Ethyne C2H2		Carbon disulfide	Ethyl nitrate

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

Dust explosion-proof form	Pangkat ng Temperatura
Dust explosion-proof form	T_A,T₁ o T_B,T₁	T_A,T₂ o T_B,T₂
A o B	Magnesium, red phosphorus, calcium carbide, soap powder, green fuel, phenol dyes, polyethylene, polypropylene, polyurethane, polyvinyl chloride, hard rubber, natural resins, rosin, wheat flour, corn starch, granulated sugar powder, cotton fiber, synthetic staple fiber , anthracite powder, charcoal powder, coal coke powder	Sifted Rice Flour, Cocoa Flour, Malt Flour, Flax Meal Flour, Coconut Flour, Peat Flour, Lignite Flour, Bituminous Coal Flour, Coal Flour para sa Coke, Lignite Coke Flour

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

Explosion-proof environment

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