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Product Description
Product
This QB explosion proof bridge crane work together with a BCD explosion proof electric hoist. The structure equipped with sealed cover,it has strong explosion proof ability.The lift capacity is 5ton-32ton.Span length is 5-40m. Work duty A3-A4,working environment temperature is -25~ 40℃.
Explosion proof grade is : Exd II BT4, Exd II CT4.It can work in combustible, flammable, explosive, heavy dust factory, warehouse, yard and other places corrosive environment.
All machines and electric appliances of QB model Explosion-proof Double Beam Overhead Crane with hook conforms to the regulations of GB3836.2-2000 Explosion Proof Electrical Apparatus for Explosive Atmosphere Part two: Flameproof Type;
The performance of crane satisfies demands in JB/T5897-1991 Explosion-proof crane.
The Explosion-proof Double Beam Overhead Crane with hook is qualified inspected by inspection unit of blast-proof product which is appointed by the state;
The Explosion-proof Double Beam Overhead Crane with hook has got Certification of Conformity of An Instrument for Explosive Atmosphere.
The signs of explosion proof are ExdⅡBT4 and ExdⅡCT4 respectively.
Mechanism
1
Steel Q235B and Q345B:
2
the girder is connected by high strength screws;
3
welding seams are tested by high strength screws;
4
Main girders are tested by X-ray and ultrasound;
5
epoxy zinc-rich primer, and the thickness of oil film is 140 μm;
6
Forged wheels ,hardened gears and reliable disc brake;
7
Compact reducer motor drive, stepless control;
8
Compact structure, small volume an light weight trolley;
9
Good operation performance,stepless speed regulating and running smoothly.
Technical Parameters
|
Lifting capacity(t) |
16/3.2
|
20/5
|
32/5
|
50/10 |
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|
Span (m) |
10.5-31.5 |
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|
Lifting height (m) |
Main |
16 |
12 |
16 |
12 |
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|
Auxiliary |
18 |
14 |
18 |
14 |
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|
Speed (m/min) |
Hoisting |
Main lift |
3.6 |
2.7 |
2.6 |
1.9 |
|
|
Aux lift |
3.8 |
3.7 |
3.7 |
3.37 |
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|
Trolley traveling |
10.3 |
10.3 |
9.8 |
8.9 |
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|
Crane traveling |
12.5/12.6 |
12.5/12.6 |
12.6/12.3 |
12.3 |
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Explosion-proof mark |
Exd II BT4, Exd II CT4 |
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|
Working class |
A3-A4 |
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Power supply |
380v,50hz,3phase or customized design |
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Component
Safety Protection Devices
Overload limiter, limit switch (lifting and traveling ),interlocking protection devices, buffer, track sweep plate shield,bus bar protection board, anti-collision device,main disconnection switch,emergency stop system and motor load protection.
Electric System
1
Reasonable components installation ,convenient for check and maintenance;
2
electric cable is suspended in cable saddle, stationary cable trolley which slides on a galvanized C-type steel;
3
Power supply through stepless slide lines;
4
Lifting mechanisms and traveling mechanisms are mutually independent and could travel at the same time
5
Control panel protection degree is IP54;
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