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QB 型防爆橋式起重機所有電機、電器防爆性能符合GB3836.2《?爆炸性氣體環(huán)境用電氣設(shè)備第2部分：隔爆型?“d”》、整機性能符合JB/T5897《?防爆橋式起重機》標準之規(guī)定，經(jīng)國家指定的防爆產(chǎn)品檢驗單位檢驗合格，?取得了《防爆合格證》。防爆標志分別為Exdll BT4、Exd II CT4。

本產(chǎn)品適用于工廠內(nèi)防爆能力不高于II B或lI C級，引燃溫度組別不低于T4組的可燃性氣體或蒸氣與空氣形成?的爆炸性氣體混合物的場所，適用的危險區(qū)域為1區(qū)或2區(qū)(詳見GB3836.1)。

本產(chǎn)品一般為地面操作，根據(jù)用戶需要也可以司機室操作。

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?l?BT4 and?Exd?lI CT4?respectively.

This?product?is suitable for areas wherethe explosion?。transmission?is?not?higher than lIB orlI?C?and the?ignition?temperature?group??of nflammable gas orexplosive mixture of steam and?gas?isnot?lower than?T4.Aplicable?dangerouszones?are?zone?1?and?zone?2(please?refer to GB3836.1 fordetails).

This?productis?generallycontrolled?on the?ground,but?controlfrom the?drivers?cabin?is?also?allowable

本樣本所提供重量為設(shè)計值，制造值為±5~15%。

The weight of?this sample is dsign value and actual weight varies±5~15%.

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