Production introduction:
QDY model double girder electric overhead traveling ladle cranes are used to lift melt metal in steel melting workshop. The ladle lifting overhead crane casting bridge crane is the main lifting and transportation equipment in the smelting workshop of the steel plant, and is used for the transfer, pouring and molten iron in the smelting process.
QDY model double girder electric overhead traveling ladle crane mainly consists of main beam,connecting beam,crane long traveling unit, lifting trolley and hook and wire rope, cable,cabin and electric control system.
It has strong structure,light dead weight,low noise,easy operation and maintenance,low maintenance cost, superior performance,long service life.
Ladle crane has very special safe design,it uses two pcs of wire rope system for the main hook, the device is called Balance Arm, any each wire rope is damaged or broken, the other wire rope will safely hold the ladle in the air and wont let it fall down,then to avoid accident.
Anti high temperature design, there is heat proof layer on bottom of main girder.
Main hook and Aux.hook all have two sets of brake,more safety.
Safety monitor is provided to monitor each motion,all data, i.e current,moving speed,are displayed in the cabin,operator can see it clearly.
In addition, Safe hydraulic brake is installed onto the flange of the wire rope drum, one more layer of safety guarantee.
Motor is with high protection class IP54,IP55, with overspeed switch,overheat protection,fan cooling,motor encoder is optional.Normal capacity are 5t,10t,16t,16/3.2t,20/5t,32/5t,50/10t,74/20t,100/32t,125/32t,140/40t,160/50t,etc.
the span is 10.5m-31.5m, lifting height 16-20m, working class is A7 or A8.
Control model: cabin control.
And ambient temperature normally up to 60ºC
Mechanical parts:
Double welding box girder, beam deflection with DIN/FEM standard
Steel Material: Chinese standard Q235B,Q345B, and Q355E
Manual brush painting,One alkyd iron red primer painting, two alkyd orange enamel finish painting
Epoxy zinc-rich primer painting for one bottoms and two sides of 120μm thick, to achieve a long lifespan, beautiful appearance and good luster.
The girder and end beam are connected together by high strength bolts to ensure the structure strength and precision of the whole machine.
The end beams are equipped with flat wheel or double rim wheels, anti-friction bearings, buffer blocks and derailment preventing plate.
Both sidesof all the steel plate of crane are pretreatedby pretreatment production line,Sand blasting– Primer spray–Primer drying. Eliminate the inner stress of steel plate, increase the adhesive force of the steel structure. Ensure the appearance and anti corrosion quality.
Safe system
Weight overload protection device
Emergency stop system
Over current Protection, Short-circuit Protection
Phase sequence protection
Zero position protection, No-Voltage protection, convenient and simple operation.
Protective earth conductor is fitted as standard
Voltage lower protection system
Current overload protection system
High protection level IP44,IP54,IP55
Long and cross travel limit switch
Anti-falling protection of trolley and crane prevents from accidental falling
High quality long time bearing polyurethane materials buffer fixed at the end of trolley travelling and crane travelling to prevent over traveling
Safety hook latch used for avoiding the lifted material out off from the hook
Audible and visual alarm device to inform the person stay near by the travelling crane
Rain Cover for lifting mechanism of outdoor cranes, electric cabinet and driving mechanism
Technical parameters
| Lifting weight(t) |
5 |
10 |
|
16/3.2 |
20/5 |
32/5 |
50/10 |
74/20 |
| Span(m) |
10.5~31.5 |
| Max Lifting height(m) |
16 |
16 |
Main hook |
16 |
12 |
16 |
12 |
22 |
| Aux.hook |
18 |
14 |
18 |
16 |
24 |
| Working class |
A7 |
|
| Speed
(m/min) |
Hoisting |
15.5 |
10.4 |
Main hook |
10.7 |
9.8 |
7.8 |
7.8 |
6.1 |
| Aux.hook |
14.6 |
15.5 |
15.5 |
10.4 |
9.7 |
| Traveling
of crab |
37.2 |
43.8 |
|
44.6 |
44.6 |
42.4 |
|
33.8 |
| Traveling
of trolley |
92.7 |
92. 7 |
|
76 |
76 |
89 |
75 |
67.3 |
| Motor
(type/kw) |
Hoisting |
15 |
22 |
Main hook |
37 |
45 |
55 |
75 |
90 |
| Aux.hook |
11 |
15 |
15 |
22 |
37 |
| Traveling
of crab |
1.5 |
2.2 |
|
3.7 |
3.7 |
7.5 |
11 |
15 |
| Traveling
of crane |
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 |
| Steel track |
trolley |
18kg/m |
24kg/m |
43kg/m |
| crane |
43kg/m |
43kg/m or QU70 |
QU70 |
QU80 |
QU100 |
| Power source |
3Ph A.C 50Hz 380V |
Design standard
Crane design standard GB 3811.
General Purpose Overhead Crane design standard GB/T14405
Manufacturing and tolerances of rail installation GB/T10183.
Crane wheel standard:JBT 6392
Crane test specification and procedures GB/T5905.
Crane electric control equipment JB/T4315.
Important application wire rope GB8918.
Carbon structure steel GB/T700.
Low alloy high strength structure steel GB/T1591.
Welding joint radiographic inspection standard JB928.
Steel welding joint manual ultrasonic flaw detection way GB11345.
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