QB Explosion Proof Overhead Cranes
Lifting Capacity: 5~75 t
Span Length: 10.5~31.5 m
Lifting Height: 6~18 m
Working Class: A4, A5
Explosion-proof Grade: ExdⅡBT4 / CT4
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Email: enquiry@cnellsen.com skype: cnellsen
Product Detail of QB Explosion Proof Overhead Cranes
- Mainly consists of bridge structure, crane travelling mechanism, electric equipment etc.
- All motors of QB type explosion proof overhead cranes which electrical explosion proof performance is in line with GB3836.2-2000 “for explosive gas atmospheres with explosion-proof electrical equipment-Part 2: Flameproof “d”, and the whole performance is in line with provisions of the standards of explosion-proof bridge cranes JB/T5897-1991.
- The proof marks are Exd Ⅱ BT4 and Exd Ⅱ CT4.
- Applied to explosion transfer capacity no higher than the II B or II C-class and the sites with explosive air mixture formed with inflammable gas (or steam) and air whose factory ignition temperature groups of not less than the T4 group.
- The applicable hazardous area: 1 division or 2 division (refer to GB3836.1-2000).
Schematic diagram of QB Explosion Proof Overhead Cranes
Technical data of QB Explosion Proof Overhead Cranes
| Capacity | t | 5 | 10 | 20 | 32 | 50 | 75 |
| Span | S(m) | 10.5~31.5 | |||||
| Lifting height | m | 6~18 | |||||
| Lifting speed | m/min | 5 | 5 | 4.2 | 4.1 | 3 | 1.9 |
| Trolley speed | m/min | 19.6 | 20.5 | 20.5 | 20 | 19.1 | 10.5 |
| Crane speed | m/min | 22.3 | 22.3 | 19 | 17 | 19.4 | 15.4 |
| Work duty | A4~A5 | ||||||
| Explosion-proof Grade | ExdⅡBT4、ExdⅡCT4 | ||||||
| Track type | P43 | P43 | P43 or QU70 | QU70 or 90*90 | QU80 or 100*100 | QU100 | |
Controlling Ways of QB Explosion Proof Overhead Cranes
1.Generally, ground controlling.
2.Cab controlling is also available according to customer’s requirement, working system is intermediate.
3.Operating cab: open style and close style, left or right installation.
4.Direction of entrance: side, end and top.
Smart Features of Explosion-Proof Overhead Crane
- Compact and outstanding structure
- Adjustable and movable
- Strong rigidity and stable operation
- Easily manipulate and maintenance
- Big lifting capacity and limited speed.
