Electric Crane Hoist

2 Types Explosion-Proof Electric Wire Rope Hoists for Industrial Safety: Reliable Gas & Dust-Proof Solutions

Explosion-proof electric wire rope hoists are based on ordinary wire rope electric hoists, motors, electrical appliances, and some parts to take explosion-proof measures, according to the different environments, divided into gas explosion-proof and dust explosion-proof.

All kinds of explosion-proof electric wire rope hoists 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 《Explosive atmospheres-Part 1: Equipment-General requirements》；
GB/T 3836.2-2021 《Explosive atmospheres-Part 2: Equipment protection by flameproof enclosures “d”》；
JB/T 10222-2011 《Explosion-proof hoist》

The National Center for Supervision and Inspection of Explosion-Proof Electrical Product Quality examines and tests various types of explosion-proof electric wire rope hoists, and after the final test, explosion-proof cranes are issued certificates of conformity.

Types of explosion-proof electric wire rope hoists

HB explosion-proof electric wire rope hoist

BNR European explosion-proof electric wire rope hoist

HB Explosion-proof electric wire rope hoists

The explosion-proof electric wire rope hoist is based on an ordinary wire rope electric hoist from the motor, electrical design, and manufacture of explosion-proof performance of explosion-proof motor and explosion-proof electrical appliances, and the corresponding mechanical explosion-proof measures assist it. It has the characteristics of lightweight, small volume, compact structure, smooth operation, high safety, and reliability, which can be used in explosion-proof electric iodine excess cranes, explosion-proof electric single girder suspension cranes, explosion-proof electric hoist bridge cranes, can also be used in the I-beam made of fixed rail.

Explosion-proof electric wire rope hoists features:

In order to ensure the mechanical explosion-proof requirements, the working line speed of all its mechanisms is controlled within 25m/min.
Use of the environment, temperature -20 ℃ ~ +40 ℃, altitude below 1000m, relative humidity 85% (20 ℃ ± 5 ℃)
Rated lifting capacity 0.5t~50t.
The working speed of each organization: the running mechanism is single-speed, the lifting mechanism can be single-speed or double-speed, and each organization can also be non-standard design for frequency conversion and speed regulation.
The operation form is wired operation on the ground, and can also be designed for remote control operation on the ground.
Applications: military, nuclear industry, aviation, aerospace, machinery manufacturing, petroleum, chemical and other industries.

Explosion-proof electric wire rope hoists parameters

Capacity

0.5

Hoisting height

6, 9, 12

6, 9, 12, 18, 24, 30

9, 12, 18, 24, 30

9, 12, 18

6, 9, 12

9, 12, 18

Hoisting spee

m/min

8, 0.8/8

7, 0.7/7

3.5, 3.5/0.35

3, 3/0.3

2.4, 2.4/0.24

3, 3/0.3

Travelling speed

m/min

Electric current

3P, 380V, 50Hz

wire rope

Dia

Φ5

Φ7.7

Φ11

Φ13

Φ15

Φ20

Φ15

Φ26

Specification

GB20119

6×9

6×19

6×37

Track

GB706

16~28b

20a~45c

28a~63c

I30a~63c

I28a~63c

I30a~63c

I63c

Min curvature radius

1.5

1.5~3.2

1.5~3.5

1.5~3.7

2.0~4.0

3.0~7.5

Working class

BNR European explosion-proof electric wire rope hoists

European explosion-proof electric wire rope hoists features:

Benchmark class M5, lightweight design
Autonomous core components, can be equipped with dual brakes
Multiple monitoring, safe and reliable
Comply with ISO/IEC international explosion-proof standard

European explosion-proof electric wire rope hoists parameters

Lifting capacity(t)	3	5	10	16	20	30	50
Lifting height(m)	6~18	6~18	6~18	6~18	6~18	6~12	6~12
Lifting speed(m/min)	0.8~5	0.8~5	0.66~4	0.66~4	0.66~4	0.4~2.7	0.4~2.7
Traveling speed(m/min)	2~6	2~16	2~16	2~16	2~16	2~16	2~16
Work class	M5
Explosion-proof grade	Exd II CT4/Ex tD A21 IP65 T130℃

Explosion-proof hoists for the environment

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

Temperature Group		Maximum permissible surface temperature ℃
T_A or T_B	T₁	450
	T₂	300
	T₃	200
	T₄	135
	T₅	100
	T₆	85

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

Explosion-proof grade	Temperature Group
Explosion-proof grade	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, petroleum (including 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 ether, acrolein, tetrahydrofuran, hydrogen sulfide	Dibutyl ether, diethyl ether, ethyl methyl ether, tetrafluoroethylene
IIC	Hydrogen, water gas	Ethyne C2H2		Carbon disulfide	Ethyl nitrate

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

Dust explosion-proof form	Temperature Group
Dust explosion-proof form	T_A、T₁ or T_B、T₁	T_A、T₂ or T_B、T₂
A or 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 for Coke, Lignite Coke Flour