TOPLESS TOWER CRANE PT6516
Suitable for construction sites that are restricted, easy to install and dismantle. If present condition is restricted, truck crane can't approach closely, then flat top tower crane is the best choice.
Due to special connection method of hoisting jib, easy to dismantle jibs in the air, also can put jibs on the trucks.
Becuase small unit quality, can use tower cranes on the same construction site to install flat top tower crane. In fact, it is easy to be restricted by present condition when dismantle tower cranes, high-rise building with skirt building, because kinds of reasons, tower cranes are at skirt building, after project is completed, it is difficult to dismantle tower cranes because of skirt buildings, truck crane can't be
Close to the building, it is easy for flat top tower crane to complete the difficult job.
Usage of steel structure can be prelonged, high safety level. Due to no pulling rod, jibs of flattop tower cranes are wider than topkit tower cranes, especially height of jibs are higher, so stiffness is stronger,
Buckling deformation will be smaller. Some customers think it may be dangerous if no pulling rod, but actually, operators from abroad say that flat top tower cranes are more stable, especially when slew or
Emergency brake, flat top tower cranes are only effected by acting force from down load, is simple, topkit tower craens will also be effected by acting force from horizontal and up load. In addition, because
Different locations of trolleying car, acting forces are different at the same location of hoisting jibs that make main stressed bars are effected by pull, press alternating force, easy to crack or welding lines crack.
For flat top tower cranes, they aren't effected by alternating force from vertical and horizontal directions, improve usage life ot steel structure and safety.
Table of lifting Performance
Load@65m boom
Load@60m boom
Load@55m boom
Load@47.5m boom
Suitable for construction sites that are restricted, easy to install and dismantle. If present condition is restricted, truck crane can't approach closely, then flat top tower crane is the best choice.
Due to special connection method of hoisting jib, easy to dismantle jibs in the air, also can put jibs on the trucks.
Becuase small unit quality, can use tower cranes on the same construction site to install flat top tower crane. In fact, it is easy to be restricted by present condition when dismantle tower cranes, high-rise building with skirt building, because kinds of reasons, tower cranes are at skirt building, after project is completed, it is difficult to dismantle tower cranes because of skirt buildings, truck crane can't be
Close to the building, it is easy for flat top tower crane to complete the difficult job.
Usage of steel structure can be prelonged, high safety level. Due to no pulling rod, jibs of flattop tower cranes are wider than topkit tower cranes, especially height of jibs are higher, so stiffness is stronger,
Buckling deformation will be smaller. Some customers think it may be dangerous if no pulling rod, but actually, operators from abroad say that flat top tower cranes are more stable, especially when slew or
Emergency brake, flat top tower cranes are only effected by acting force from down load, is simple, topkit tower craens will also be effected by acting force from horizontal and up load. In addition, because
Different locations of trolleying car, acting forces are different at the same location of hoisting jibs that make main stressed bars are effected by pull, press alternating force, easy to crack or welding lines crack.
For flat top tower cranes, they aren't effected by alternating force from vertical and horizontal directions, improve usage life ot steel structure and safety.
| Work rank of whole crane | A4 | Work rank of mechanisims | Hosting mechanism | M5 | |||||||||||||
| Slewing mechanism | M4 | ||||||||||||||||
| Trolleying mechanism | M4 | ||||||||||||||||
| Hoisting height(m) | Free standing=53 | Attached=200 | |||||||||||||||
| Max. load | 4 falls=10t 2 falls=5t | ||||||||||||||||
| Radius(m) | Max. radius | 65 | |||||||||||||||
| Min. radius | 2.5 | ||||||||||||||||
| Tip load (t) | 1.6 | ||||||||||||||||
| Hoisting mechanism | Speed | Magnification | α =2 | ||||||||||||||
| Load (t) | ≤ 2.5 | ≤ 5 | |||||||||||||||
| Speed (m/ min) | 100 | 50 | |||||||||||||||
| Magnification | α =4 | ||||||||||||||||
| Load (t) | ≤ 5 | ≤ 10 | |||||||||||||||
| Speed (m/ min) | 50 | 25 | |||||||||||||||
| Type of motor and power | TZRSWF250M2-4/8 37kW | ||||||||||||||||
| Slewing mechanism | Speed | Type of motor | Power | ||||||||||||||
| 0.56r/min | YTW132S-4 | 5.5kW× 2 | |||||||||||||||
| Trolleying mechanism | Speed | Type of motor | Power | ||||||||||||||
| 60/30/9 | YDEG180-4/8/24 | 5/3/1.1kW | |||||||||||||||
| Jacking mechanism | Speed | Rated work pressure | Power | ||||||||||||||
| 0.5m/min | 20MPa | 7.5kW | |||||||||||||||
| Counterweight | Jib length(m) | 65 | 60 | 55 | 47.5 | ||||||||||||
| Weight (t) | 24 | 21.9 | 21 | 16.5 | |||||||||||||
| Total power | 53kW (without jacking motor) | ||||||||||||||||
| Power supply | -380V(± 5%) | Frequency | 50Hz | Work temperature | - 10-40 | ||||||||||||
Table of lifting Performance
Load@65m boom
| Radius (m) | 2.5-15.84 | 18 | 20 | 22 | 24 | 26 | 28 | 30 | 32 | 34 | 36 | 38 | ||
| Load (t) | 2 falls | 5.0 | 4.70 | 4.44 | 4.02 | 3.73 | 3.48 | |||||||
| 4 falls | 10.0 | 8.60 | 7.58 | 6.76 | 6.08 | 5.51 | 5.0 | |||||||
| Radius (m) | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 | 56 | 58 | 60 | 62 | 65 | |
| Load (t) | 2/4 falls | 3.25 | 3.04 | 2.86 | 2.69 | 2.53 | 2.39 | 2.26 | 2.13 | 2.02 | 1.92 | 1.82 | 1.73 | 1.60 |
Load@60m boom
| Radius (m) | 2.5-18.41 | 20 | 22 | 24 | 26 | 28 | 30 | 32.8 | 34 | 36 | 38 | ||
| Load (t) | 2 falls | 5.0 | 4.88 | 4.54 | 4.24 | ||||||||
| 4 falls | 10.0 | 9.08 | 8.11 | 7.32 | 6.65 | 6.07 | 5.58 | 5.0 | |||||
| Radius (m) | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 | 56 | 58 | 60 | ||
| Load (t) | 2/4 falls | 3.98 | 3.64 | 3.52 | 3.32 | 3.14 | 2.97 | 2.81 | 2.67 | 2.54 | 2.42 | 2.30 | |
Load@55m boom
| Radius (m) | 2.5-19.86 | 20 | 22 | 24 | 26 | 28 | 30 | 32 | 35.43 | 36 | 38 | ||
| Load (t) | 2 falls | 5.0 | 4.90 | 4.68 | |||||||||
| 4 falls | 10.0 | 9.92 | 8.87 | 8.01 | 7.29 | 6.67 | 7.13 | 5.67 | 5.0 | ||||
| Radius (m) | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 | 55 | ||||
| Load (t) | 2/4 falls | 4.49 | 4.13 | 3.89 | 3.67 | 3.48 | 3.29 | 3.13 | 2.97 | 2.90 | |||
Load@47.5m boom
| Radius (m) | 2.5-20.18 | 22 | 24 | 26 | 28 | 30 | 32 | 34 | 36 | 38 | 40 | ||
| Load (t) | 2 falls | 5.0 | 4.77 | 4.48 | |||||||||
| 4 falls | 10.0 | 9.04 | 8.16 | 7.43 | 6.80 | 7.26 | 5.78 | 6.37 | 5.0 | ||||
| Radius (m) | 42 | 44 | 46 | 47.5 | |||||||||
| Load (t) | 2/4 falls | 4.21 | 3.97 | 3.75 | 3.60 | ||||||||