1 Hoisting Mechanism <o:p>
Three-gear speed modulation by electrical motor or frequency conversion, giant winch. <o:p>
2 Rotation Mechanism
Speed modulation with frequency conversion, stable break, accurate position, outstanding on performance and operation all around the world. <o:p>
3 Lifting Mechanism
Speed modulation with frequency conversion, less concussion, stable operation. <o:p>
4 Control System
PLC control, auto diagnosis on electric malfunction, corresponding alarm on light and sound, key components adopting international top brand product.<o:p>
5 Security & Protection Mechanism
Besides security mechanism usually used in domestic tower crane adopted,MingWei tower crane adopted lots of advanced mechanism self-developed by MingWei, to keep the security of the tower crane and convenient operation, such as unique double tighten mechanism on lifting steel cable, anti-break mechanism on sliding vehicle, anti-drop<o:p>
Tower Crane Model:QTZ80(TC5513)
Free Standing Height/Max. Height:45m/150m
Jib Length :3---55m
Mast Section/Material: Square Tube 135×135×12/Q345B
Size of Mast Section, L×W×H: 1835×1835×2500
Collar Ties Situation: Distance between first collar tie and the ground 35000mm
Other Distance 25000mm
Suspension Height no more than 25m
Balanced Weight /Jib Length: 16.32t/55m
Total Power: 46.2Kw
Loading Chart:
2 Falls| Jib Length(m) | 3-28.3 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 |
| Load(t) | 3 | 2.92 | 2.80 | 2.69 | 2.60 | 2.51 | 2.42 | 2.34 | 2.26 | 2.19 |
| Jib Length(m) | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 |
| Load(t) | 2.12 | 2.05 | 2.0 | 1.93 | 1.88 | 1.82 | 1.77 | 1.72 | 1.68 | 1.63 |
| Jib Length(m) | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | | |
| Load(t) | 1.58 | 1.55 | 1.51 | 1.47 | 1.43 | 1.39 | 1.36 | 1.33 | | |
4 Falls| Jib Length(m) | 3-15.3 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| Load(t) | 6 | 5.73 | 5.36 | 5.04 | 4.74 | 4.48 | 4.24 | 4.03 | 3.83 |
| Jib Length(m) | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 |
| Load(t) | 3.65 | 3.48 | 3.33 | 3.18 | 3.05 | 2.93 | 2.81 | 2.71 | 2.61 |
| Jib Length(m) | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 |
| Load(t) | 2.51 | 2.42 | 2.34 | 2.26 | 2.18 | 2.11 | 2.04 | 1.98 | 1.92 |
| Jib Length(m) | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 |
| Load(t) | 1.86 | 1.81 | 1.75 | 1.70 | 1.65 | 1.61 | 1.56 | 1.52 | 1.48 |
| Jib Length(m) | 51 | 52 | 53 | 54 | 55 | | | | |
| Load(t) | 1.44 | 1.40 | 1.37 | 1.33 | 1.30 | | | | |
Basic Parameters:
| Mechanical Factor | Hoisting Mechanism | M5 |
| Slewing Mechanism | M4 |
| Trolleying Mechanism | M4 |
| Hoisting Mechanism | Motor | Model | YZRDW250M1-4/8 |
| Power(kW) | 30/30 |
| Height Limiter | Model | FKDX-G |
| Wire Steel Rope | Spec. | 6X37-15-1770-I |
| Max. Attraction (N) | 20000 |
| Falls | a=2 | a=4 |
| Lifting Speed(m/min) | 80.36 | 41.05 | 39.37 | 20.11 |
| Rated Load(t) | 2 | 4 | 4 | 8 |
| Min. Rate of Descend | m/min | ≤7 |
| Slewing Mechanism | Motor | Model | YZR132M2-6 |
| Power(kW) | 3.7×2 |
| Rotating Speed(r/min) | 908 |
| Reducer | Model | XX4-100.180 |
| Drive Ratio | 180 |
| Coupler | Model | YOX280A |
| Rotating Pinion | Modulus m | 12 |
| Number of Teeth z | 16 |
| Modification Coefficient | +0.5 |
| Rotating Speed | r/min | 0.64 |
(Continued)| Slewing Bearing | Single row four-point contact ball slewing bearing | Model | 011·45·1400 |
| Modulus m | 12 |
| Number of Teeth z | 131 |
| Hydraulic Jacking Mechanism | Motor | Model | Y132M-4B5 |
| Power(kW) | 5.5 |
| Rated Oil Cylinder Working Pressure | Mpa | 25 |
| Max. Jacking Force | t | 50 |
| Oil Cylinder Stroke | mm | 1600 |
| Locating Distance | mm | 2070 |
| Oil Cylinder Diameter | mm | φ160 |
| Oil Cylinder Piston Diameter | mm | φ110 |
| Jacking Speed | m/min | 0.4 |
| Trolleyinh Speed | Motor | Model | YDEJ132S-4/8 |
| Power(kW) | 4.5/3 |
| Wire Steel Rope | Spec. | 6×19-7.7-1550 |
| Reducer | Model | BL22-43-3.3 |
| Drive Ratio | 43 |
| Trolleying Speed | m/min | 44/22 |
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