China 4t new construction hammer-head tower crane QTZ40(4208)
Technical datas
| The rated lifting moment
|
400KN.M
|
| The max lifting capacity
|
4t
|
| The jib length
|
42m
|
| The radius
|
3-42(m)
|
| The tip load
|
0.8t
|
| The free standing height
|
29m/31m
|
| The attaching height
|
121m
|
| Main chord
|
140*140*12(mm)
|
| Mast section
|
1.5*1.5*2.2(m)
|
| Slewing angle
|
540°
|
| Material
|
Q345B Mn steel
|
| Work T
|
-20°C~+40°
|
loading capacity
| Jib length(m)
|
|
11
|
13
|
16
|
19
|
21
|
24
|
27
|
30
|
34
|
36
|
38
|
41
|
42
|
| 2t-20.97m
|
2 rate
|
2
|
2
|
2
|
2
|
1.996
|
1.723
|
1.510
|
1.34
|
1.159
|
1.084
|
1.017
|
0.829
|
0.8
|
| 4t-10.96m
|
4 rate
|
3.986
|
3.343
|
2.68
|
2.23
|
1.996
|
1.723
|
1.510
|
1.34
|
1.159
|
1.084
|
1.017
|
0.829
|
0.8
|
Mechanism specifications
| Hoisting
|
2 fall
|
4 fall
|
KW
|
| m/min
|
65.1
|
32.6
|
13.0
|
31.9
|
15.9
|
6.4
|
15/15/4
|
| t
|
0.8
|
2
|
2
|
1.6
|
4
|
4
|
| Trolleying
|
m/min 40/26
|
2.8/2.2
|
| Slewing
|
r/min 0.75
|
5.5
|
| Climbing
|
m/min 0.4
|
3
|
| Necessary electric power
|
26.3
|
| Main supply
|
~380V 50Hz/440V 60Hz
|
| Jib length (m)
|
42
|
| Counterbalance (t)
|
6.85
|
The features of QTZ40(4208)
1) The hydraulic climbing system
It adopts standard section hydraulic lifting andconnecting, and can decide the crane height according to the actual height ofthe building, The max. attached height can reach 180m
2) The lifting mechanism
The coiling frequency motor and mono-speed ratiodecelerator is applied in the lifting mechanism, which enables heavy load lowspeed and light load high speed
3) The trolleying mechanism
The range-change structure drives the dolly to changerange on the horizontal arm, with good positioning performance
4) The slewing mechanism
Planet gear decelerator is used in the slewing structure,together with moment-limiting hydraulic coupler, which ensure highload capacity, steady starting and reliable operation
