CE Approved Flattop Building Crane (QTZ40(PT4810))
PT4810 FLATTOP TOWER CRANE
PT4810 flat top tower crane is based on microcomputer design platform of tower crane, applying group technology, combined design technology and FE analysis technology, combining with advanced international technology and requirements of domestic construction market, develop and design more advanced tower crane in China.
The tower crane is horizontal arm support, trolleying, top slewing and hydraulic jacking tower crane. Its jib length is 48m, max. Load moment is 540 KN. M, free standing height is 30m, max. Attached height is 120m (2 falls).
Self-weight of the crane(without balanced weight and anchors) is 21.41t, total capacity of whole crane is 25.1 Kw. Advanced parameters, stable performance, good looking, excellent quality, simple structure, equipped with advanced safety devices, simple maintenance and competitive price make MLP4810 tower crane be popular in small and medium construction enterprises.
Performance parameters
Item performance parameters
1 max. Lifting capacity(t) 4t
2 max. Operating range(m) 48m
3 max. Lifting capacity at jib tip (t) 0.9T
4 basic height (m) 29m
5 max. Height (m) 120m
6 dimension of section (m) 1.5× 1.5× 2.2
7 material of mast section 160× 160× 12/Q345B
| Item |
Performance |
Parameters |
| 1 |
Max. Load |
4t |
| 2 |
Max. jib length |
48m; |
| 3 |
Tip load |
1.0t |
| 4 |
Free standing height |
30m |
| 5 |
Max. height |
120m |
| 6 |
Size of mast section |
1.5×1.5×2.2m |
| 7 |
Material of mast section |
All mast sections are manganese Q345B, ∠160×12 angle steel; Jib is Q345B. |
2. Main parameters
| Item |
Unit |
Magnification |
| α=2 |
α=4 |
| Rated load moment |
KN.m |
540 |
| Max. load |
t |
2 |
4 |
| Work radius |
m |
3 - 48 |
| Load at max. radius |
t |
1.0 |
| Radius at max. load |
m |
27.3 |
14.79 |
| Hoisting height |
Independent |
m |
30 |
| Adhered |
120 |
60 |
|
| Outer size of whole crane |
Chassis |
m |
6.0×6.0 |
| Height of whole crane |
Independent |
38.284 |
| Adhered |
128.284 |
|
| Tip of jib to the slewing center |
48.74 |
|
| Tip of balanced jib to slewing center |
11.425 |
| Self-weight of whole crane |
Independent |
t |
21.41 |
| Adhered |
t |
46.36 |
| Balanced weight |
t |
8.0 |
| Other |
Total power of motors |
Kw |
25.1 |
| Work grade at max. height |
Grade |
≤6 |
| Allowable work temperature |
ºC |
-20~40 |
3. Performance of load3.1 Load charts(A) Load chart of 4 falls
| Radius (m) |
3-14.79 |
15 |
16 |
17 |
18 |
19 |
20 |
| Load (t) |
4 |
3.94 |
3.67 |
3.44 |
3.23 |
3.04 |
2.87 |
| Radius (m) |
21 |
22 |
23 |
24 |
25 |
26 |
27 |
| Load (t) |
2.72 |
2.58 |
2.45 |
2.34 |
2.23 |
2.13 |
2.04 |
| Radius (m) |
28 |
29 |
30 |
31 |
32 |
33 |
34 |
| Load (t) |
1.95 |
1.87 |
1.80 |
1.73 |
1.67 |
1.61 |
1.55 |
| Radius (m) |
35 |
36 |
37 |
38 |
39 |
40 |
41 |
| Load (t) |
1.50 |
1.45 |
1.40 |
1.35 |
1.31 |
1.27 |
1.23 |
| Radius (m) |
42 |
43 |
44 |
45 |
46 |
47 |
48 |
| Load (t) |
1.19 |
1.15 |
1.12 |
1.09 |
1.06 |
1.03 |
1.00 |
Load chart of 2 falls
| Radius (m) |
3-27.3 |
28 |
29 |
30 |
31 |
32 |
33 |
| Load (t) |
2 |
1.94 |
1.86 |
1.79 |
1.72 |
1.66 |
1.60 |
| Radius (m) |
34 |
35 |
36 |
37 |
38 |
39 |
40 |
| Load (t) |
1.54 |
1.49 |
1.44 |
1.39 |
1.35 |
1.30 |
1.26 |
| Radius (m) |
41 |
42 |
43 |
44 |
45 |
46 |
47 |
| Load (t) |
1.23 |
1.19 |
1.15 |
1.12 |
1.09 |
1.06 |
1.03 |
| Radius (m) |
48 |
|
|
|
|
|
|
| Load (t) |
1.00 |
|
|
|
|
|
|
3.2 technical parameters of mechanisms
| Mechanical load factor |
Hoisting mechanism |
JC 40% |
| Slewing mechanism |
JC 40% |
| Trolleying mechanism |
JC 40% |
| Hoisting mechanism |
Motor |
Type |
YZTD200L 2 -4/8/24 |
| Speed |
r/min |
1440 |
720 |
220 |
| Power |
kW |
15 |
15 |
4 |
| Reducer |
Center distance |
mm |
460 |
| Transmission ratio |
i |
12.25 |
| Drum |
Dia. |
mm |
Φ330 |
| Layers of rope |
4 |
| Capacity |
m |
280 |
| Speed |
r/min |
114 |
57 |
11.4 |
| Braker |
Type |
YWZ-250/45-10 |
| Braking force |
N |
450 |
| Wire steel rope |
Tractive force |
N |
10000 |
| Spec. |
6×19-12.5-1770-I |
| Hoisting speed |
m/min |
65.1/31.9 |
32.6/15.9 |
13.0/6.4 |
| Rated load |
t |
0.8/1.6 |
2/4 |
2/4 |
| Min. Stable descending speed |
m/min |
≤7 |
| Total weight |
t |
1.2 |
| Slewing mechanism |
Motor |
Type |
YZR132M-6 |
| Speed |
r/min |
908 |
| Power |
kW |
3.7 |
| Reducer |
Type |
H-100 |
| Transmission ratio |
i |
195 |
| Outputing torque |
N@m |
10000 |
| Slewing bearing |
Type |
QW.40.1120 |
| Small pinion gear |
No. of modulus |
m |
10 |
| No. of teeth |
z |
13 |
| Modification coefficient |
x |
+0.5 |
| Hydraulic coupler |
Type |
YOX280A |
| Slewing speed |
r/min |
0.6 |
| QTY of installation |
set |
1 |
| Trolleying mechanism |
Motor |
Type |
YD100L 2 -4/6 |
| Speed |
r/min |
1440 |
960 |
| Power |
kW |
2.4 |
1.5 |
| Reducer |
Model |
WCJ120 |
| Transmission ratio |
39 |
| Wire steel rope |
Spec. |
6×19-7.7-1550-I |
| Line speed |
m/min |
38.6/25.2 |
| Trolleying speed |
m/min |
38.6/25.2 |
| Hydraulic jacking mechanism |
Hydraulic pump |
Work pressure |
MPa |
20 |
| Power |
kW |
4 |
| Type of oil pump |
GB306 |
| Jacking cylinder |
Rated pressure |
MPa |
20 |
| Dia. of cylinder |
mm |
Φ125 |
| Dia. of piston rod |
mm |
Φ90 |
| Stroke |
mm |
1300 |
| Erection distance |
mm |
1700 |
| Jacking speed |
m/min |
0.4 |
| Max. Jacking force |
t |
24.6 |
Audited Supplier 
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