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Help Center20 Ton Double Girder Overhead Crane
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Specifications
20 ton overhead craneOptimazed designing,
smaller wheel load, space saving
Excellent driving properties
20 ton overhead crane
brief introduction:
1,Mainly composed of bridge, crane traveling mechanism, trolley, electrical equipment, etc. ;
2. three ways to enter to the cab: from side, from end
2,Design and manufactured in accordance with GB/T 14405, General Bridge Crane;
3,Widely applied to loading and moving of normal weight in the fixed crossing space and also can work with various special-purpose hoists in special operations;
4,It is prohibited to use the equipment in the combustible, explosive or corrosives environment.
Feature Description:
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Optimazed designing, smaller wheel load, space saving Max. Safe working load 50t Flexible solution for all lifting needs Excellent driving properties, stepless control, smoothly moving
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Mechanical feature
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Dobule welding box girder, DIN/FEM standard deflection. Adopt high quality carbon steel, Q235B or Q345B; (similar as Fe37 or Fe52); Whole length CNC cutting for complete web plate, high deflection accuracy High quality autometic welding and NDT inspection
Shot-blasting Sa2.5 for complete girder after welding, stress release
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Trolley rail is high strength flat steel bar 10.9 class High tension bolts mouting between girder and legs, life time safety connection high quality paiting, 2x2 with 140μm , beautiful appearance End girder is matched with rail buffer and rail clearance device, anti-friction bearings |
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Full-length service platform along the crane bridge is supplied,where it si equippe with protective hand railing and toe strips. Compacted gearmotor driving, stepless control, hardern gear, safety disck brake High proection class IP54, F class, 40% ED |
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Electrification and outfitting
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slide wire or C shape slide line conductor power supply. all hoist and crane movements are independent and an be run at same time.
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The control panels are finished to withstand corrosion, IP54
The components are positioned in a maintenance friendly way, and the whole layout provides good protection against accidental contact. Cables are coded either with numbers, colours or tags for easy identification
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The flate cables used for festoons are PVC insulated flexible flat cables rated for 450/750V, specially designed for cranes, hoists.
Festoon cables are suspended on cable saddles, fixed to cable trolleys, running in a galvanised C-track, which is connected to the main girder with bolted or welded support brackets. |
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Lifting units
| Separate trolley structure Flexible element for lifting beam, no bending forces to the trolley Asynchronous squirrel cage motor F class insulation, IP54 pretection DC Electromagnetic disc brake
Min. two dead rope turns while the hook is in the lowest position. high tensile steel wire rope. Din standard hook
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Safety features
1. Overload protection: If the material is over the capacity, the crane will give a sharp warning for protection itself.
2. Emergency brake: If the operation staff encounters some emergency situation, we could start the emergency brake system to protection the related treasure.
3. Control Method: Room control or remote control to avoid any injure to the operation staff
4. Main lifting motor: with thermal protection and currency protection.
5. Hooks with latch
6. Rubber buffers
7. Protective earthing
8. Crane switch and travel end switch
9. Sub-assemblies characteristic are tested before assembly.
Details parameters
Lifting capacity |
T |
20/5 |
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Span |
m |
10.5 |
13.5 |
16.5 |
19.5 |
22.5 |
25.5 |
28.5 |
31.5 |
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Max. lifting height |
Main hook |
m |
12 |
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Aux hook |
m |
14 |
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speed |
hoist |
main |
A5 |
m/min |
7.2 |
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A6 |
9.7 |
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auxiliary |
12.7 |
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Trolley travelling |
44.6 |
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Crane travelling |
A5 |
84.7 |
87.6 |
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A6 |
112.5 |
101.4 |
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motor |
hoisting |
main |
A5 |
Model/kw |
YZR225M-8/26 |
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A6 |
YZR250M1-6/37 |
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auxiliary |
YZR160L-6/13 |
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Trolley travelling |
YZR132M2-6/4 |
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Crane travelling |
A5 |
YZR160M1-6/6.3 |
YZR160M2-6/8.5 |
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A6 |
YZR160M2-6/7.5 |
YZR160L-6/11 |
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weight |
Trolley |
A5 |
Kg |
6927 |
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A6 |
7160 |
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Total weight |
A5 |
19133 |
20753 |
22968 |
27269 |
29884 |
34243 |
38021 |
41126 |
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A6 |
20152 |
22189 |
24628 |
29245 |
32031 |
36259 |
40119 |
43680 |
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Max. wheel load |
A5 |
KN |
162 |
169 |
178 |
191 |
199 |
211 |
222 |
231 |
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A6 |
167 |
174 |
183 |
197 |
205 |
218 |
229 |
239 |
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Rail recommend |
43kg/m |
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Power supply |
3-phase A.C 380V, 50HZ |
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