QL Double Girder Bridge Crane with Carrier-beam Used in Steel Mill

QL Double Girder Bridge Crane with Carrier-beam Used in Steel Mill

Double Girder Bridge Crane with Carrier-beam Used in Steel Mill Double Girder Bridge Crane with Carrier-beam mainly consists of bridge, crane traveling mechanism, trolley, electric equipment and electromagnetic chuck. When used, the rotary part of the hanger of electromagnetic disk must be...

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Double Girder Bridge Crane with Carrier-beam Used in Steel Mill

Double Girder Bridge Crane with Carrier-beam mainly consists of bridge, crane traveling mechanism, trolley, electric equipment and electromagnetic chuck. When used, the rotary part of the hanger of electromagnetic disk must be locked up with screws and no rotation is allowed. 
This type crane is heavy duty type with working duty is A6~A7, crane lifting capacity includes the dead weight of magnetic lifters.

Main Crane Parts Information

The material of steel plate adopts Q235B, if working temperature lower-20℃ or higher +40℃,adopts Q345 steel, all steel plates are under the process of rolling, shot blasting and rust removal, then paint primer.




Trolley

It is the lifting mechanism, lifting good up and down, travelling along the crane girder/ beam from the left side to the right side. It consist of motor, reducer, brake, drum, hook, coupling, hoist structure. We can separately supply electric crab/hoist for clients.


Motor

The slip ring motors are used specially for crane, suitable for frequent starting , reversing & braking in accordance with ISO 9001:2000 ISO 14001:2004. Motors are totally enclosed in dust proof construction foot / flange mounted TESC / TEFC, Sq. cage motors with integrated safety brakes, insulation class F, IP54 protection for hoisting, CT & LT motions.


Gear Box

The entire gear boxes are made of accurate hob cut helical / spur gears & pinions having hardness 250 to 350 BHN made from carbon alloy steel. All gears & pinions running on antifriction type ball/ roller bearings in totally enclosed oil bath giving constant splash lubrication. The helical/Spur gear designed for adequate strength and optimum wear resistance for smooth operation & long life.


Brakes

Independent Hydraulic Brake make the crane much safe and easier to control



Control box & cable

The surface of control box under anticorrosive treatment with reasonable layout and convenient maintenance. All the cables have color, number or with wire marking, which are easy to identify 
The jointing part of plug adopts plastic tube with insulation protection. 
Trolley traveling mobile power supply system adopts crane special used PVC 
flat cable, withstand voltage class can up to 450/750V, equipped with galvanized slide rail and cable pulley with smoothly sliding.


Control mode

Operator cabin

Wide vision, safety, comfortable 
Can equip with air condition, cooling fan, heater, interphone…

Pendant control
Easily control and no need to set professional operator

Remote control
Easily control and no need to set professional operator, the operator can control the crane on the ground more freely.

 

 


Capacity

t

5

10

16/3.2

20/5

32/5

50/10

74/20

Span

m

10.5~31.5

13.5~31.5

Max. Lifting Height

Main hook

m

16

16

16

12

16

12

22

Aux hook

18

14

18

16

24

Speed

Main hoist

m/min

15.5

10.4

10.7

9.8

7.8

7.8

6.1

Aux hook

14.6

15.5

15.5

10.4

9.7

Trolley travelling

37.2

43.8

44.6

44.6

42.4

39.3

33.8

Crane travelling

92.7

93.7

92.7

93.7

86.5

76

89

76

89

89

75.3

75.3

75

76.6

67.3

Motor

Main hoisting

Kw

15

22

37

45

55

75

90

Aux hoisting

11

15

15

22

37

Trolley travelling

1.5

2.2

3.7

3.7

7.5

11

15

Crane travelling

2× 5.5

2× 7.5

2× 5.5

2× 7.5

2× 7.5

2× 11

2× 7.5

2× 11

2× 11

2× 11

2× 15

2× 22

Power supply

3-phrase 50HZ 220V~480V according to your requirements


Working Environment


The temperature of working environment is -10~+60° C;

The relative humidity is no more than 50% when the temperature is +40° C;



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