5 台防爆桥式起重机：危险工作场所的最大安全性

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2 LXB explosion proof single girder underslung crane

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 防爆开放式卷扬双梁桥式起重机：危险行业的最高安全性

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 防爆双小车双梁桥式起重机：重型应用的精密起重

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 防爆单梁桥式起重机：专为危险环境而设计

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《爆炸性环境第1部分：设备通用要求》；
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.

温度组		最高允许表面温度℃
电视_A 或 T_乙	电视₁	450
	电视₂	300
	电视₃	200
	电视₄	135
	电视₅	100
	电视₆	85

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

防爆等级	温度组
防爆等级	电视₁	电视₂	电视₃	电视₄	电视₅	电视₆
伊阿	乙烷、丙烷、苯乙烯、苯、二甲苯、一氧化碳、丙酮、乙酸、乙酸甲酯、氨、吡啶	乙醇、丁烷、丙烯、乙酸乙酯、二氯甲烷、氯乙烯、氯乙醇、噻吩、环戊烷、二甲胺	戊烷、己烷、乙基环戊烷、松节油、石脑油、石油（包括军用汽油）、燃料油、氯丁烷、四氢噻吩	乙醛、三甲胺		亚硝酸乙酯
乙型肝炎	丙炔、丙烯腈、氰化氢、焦炉煤气	乙烯、环氧乙烷、丙烯酸甲酯、呋喃	二甲醚、丙烯醛、四氢呋喃、硫化氢	二丁醚、二乙醚、乙基甲基醚、四氟乙烯
以色列投资委员会	氢气、水煤气	乙炔 C2H2		二硫化碳	硝酸乙酯

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

粉尘防爆形式	温度组
粉尘防爆形式	电视_一个，电视₁ 或 T_B、电视₁	电视_一个，电视₂ 或 T_B、电视₂
A 或 B	镁、红磷、电石、肥皂粉、环保燃料、酚染料、聚乙烯、聚丙烯、聚氨酯、聚氯乙烯、硬质橡胶、天然树脂、松香、小麦粉、玉米淀粉、砂糖粉、棉纤维、合成短纤维、无烟煤粉、木炭粉、煤焦粉	筛过的米粉、可可粉、麦芽粉、亚麻粉、椰子粉、泥煤粉、褐煤粉、烟煤粉、焦炭用煤粉、褐煤焦炭粉

5 台防爆桥式起重机：危险工作场所的最大安全性

Explosion-proof environment

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