QB Explosion Proof Overhead Cranes

QB Explosion Proof Overhead Cranes

QB Explosion Proof Overhead Cranes

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
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.

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