Hammerhead Tower Crane, QTZ40 TC4808-4
QTZ40 TC4808-4 hammerhead tower crane consists of a horizontal arm, a jib, a hoisting mechanism, a trolleying mechanism, a slewing mechanism, a hydraulic jacking system, a cabin and safety devices. As a high-level slewing tower crane, it is widely used for constructions of high-rise restaurants, civilian buildings and industrial buildings. It is an ideal choice for small and middle-size construction enterprises.
Our tower crane has many advantages. First, the jib, which is held by rigid duplex pull rods, features good rigidity, light weight, small cross section, small wind resistance, uniform force distribution and good-looking appearance. The maximum hook radius reaches 48 meters, which makes the crane suitable for many engineering projects. Further, the hoisting mechanism can ensure low-speed heavy loading and high-speed light loading with the help of a three-speed motor and a single-stage gear reducer. The maximum hoisting speed reaches 62.5 m/min. Thirdly, the operators cabin runs along the horizontal arm with traction by the trolleying mechanism, which facilitates perfect positioning. The cabin is installed separately at one side of the tower to ensure full view, which provides the operator with a comfortable and convenient working environment. Equipped with a planetary reducer and a hydraulic coupler, the slewing mechanism achieves great bearing capacity, smooth startup, reliable performance, wind resistance and accurate positioning. Lastly, the construction tower crane is designed with various built-in safety devices to ensure a safe and reliable working environment.
Moreover, the hydraulic jacking system manages to lift the tower by adding mask sections. In this way, the top-slewing crane can rise with a building's ascending. In addition, it can be fixed on a base or attached to an external wall. Hence, it is extensively applied for different construction projects. Its freestanding height is 30 meters, while its attached height can be 140 meters and 60 meters respectively for situations with multiplier as 2 and 4.
- Mast Section
- Jib
- Tower Head
- Detail Description
- Package
Hammerhead Tower Crane Specifications
Total Power: 25.1kW
Voltage: 380V10
Frequency: 50Hz/60Hz
Multiplying | 2 | 4 | ||
Rated Load Moment | kNm | 400 | ||
Maximum Hoisting Capacity | t | 2 | 4 | |
Radius at Maximum Hoisting Capacity | m | 21.1 | 11.29 | |
Tip Load | t | 0.76 | 0.75 | |
Hook Radius | m | 3- 48 | ||
Freestanding Height | 30 | |||
Hoisting Speed | m/min | 9.3/4.6 31/15.5 62.5/31.3 | ||
Slewing Speed | r/min | 0.6 | ||
Trolleying Speed | m/min | 20/40 | ||
Minimum Steady Descending Speed | <8.5 | |||
Overall Dimension | Base | m | 5 5 1.1 | |
Total Height | 37.27 | |||
Distance between Jib Tip to Slewing Center | 48.87 | |||
Distance between Balance Arm Tip to Slewing Center | 11.18 | |||
Overall Weight | Structure Weight | t | Cross Shaped Chassis18.9/Double Cross Shaped Chassis18.4 | |
Counter Weight | 9.12 | |||
Others | Total Motor Power | KW | 25.1 | |
Maximum Working Wind Speed | m/s | 20 | ||
Maximum Jacking Wind Speed | 12 | |||
Working Temperature | -20 C - 40 C |
Loading Rate | Hoisting Mechanism | JC 40% | ||||
Slewing Mechanism | JC 40% | |||||
Trolleying Mechanism | JC 40% | |||||
Working Grade | Hoisting Mechanism | M | ||||
Slewing Mechanism | M | |||||
Trolleying Mechanism | M | |||||
Hydraulic Jacking System | M | |||||
Trolleying Mechanism | Traction | N | 4000 | |||
Motor | Speed | r/min | 1380 | 720 | ||
Power | kW | 2.4 | 1.5 | |||
Reducer | Reduction Ratio | 54 | ||||
Steel Wire Rope | Specification | 6X19W-7.7-1550-FC-ZS | ||||
Line Speed | m/min | 31/16 | ||||
Trolleying Speed | m/min | 31/16 | ||||
Hoisting Mechanism | Motor | Model | YZTD200L2-4/8/24 | |||
Speed | r/min | 1420 | 700 | 210 | ||
Power | kW | 15 | 15 | 4 | ||
Reducer | Center Distance | mm | 500 | |||
Transmission Ratio | i | 15.2 | ||||
Winch Drum | Diameter | mm | 405 | |||
Layer of Rope | Layer | 4 | ||||
Rope Capacity | m | 280 | ||||
Speed | r/min | 95 | 47 | 14.5 | ||
Brake | Model | YWZ3-250/45 | ||||
Braking Force | N | 450 | ||||
Steel Wire Rope | Traction | N | 10000 | |||
Specification | 6X19W-11-1770-FC-ZS | |||||
Hoisting Speed | m/min | 62.5/31.3 | 31/15.5 | 9.3/4.6 | ||
Rated Hoisting Capacity | T | 0.75/1.6 | 2/4 | 2/4 | ||
Minimum Steady Descending Speed | m/min | <8.5 | ||||
Total Weight | t | 0.91 | ||||
Slewing Mechanism | Motor | Model | YZR132M2-6 | |||
Speed | r/min | 910 | ||||
Power | kW | 3.7 | ||||
Reducer | Model | XX4-100 | ||||
Transmission Ratio | i | 157 | ||||
Output Torque | N m | 10000 | ||||
Wheel Gear | Module | m | 10 | |||
Tooth Number | z | 13 | ||||
Modification Coefficient | x | 0.5 | ||||
Hydraulic Coupler | Model | YOX280 | ||||
Matched Slewing Bearing | Model | 011.40.1120 | ||||
Slewing Speed | r/min | 0.6 | ||||
Hydraulic Jacking System | Hydraulic Pump Station | Working Pressure | MPa | 22 | ||
Power | kW | 4 | ||||
Hydraulic Cylinder | Rated Pressure | MPa | 22 | |||
Diameter | mm | 125 | ||||
Rod Diameter | mm | 90 | ||||
Stroke | mm | 1320 | ||||
Installation Distance | mm | 1700 | ||||
Jacking Speed | m/min | 0.4-0.7 | ||||
Maximum Jacking Capacity | t | 27 |
Multiplying 2 | |||||||||||||||
Radius (m) | 3 21.1 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 |
Hoisting Capacity (Kg) | 2000 | 1907 | 1812 | 1726 | 1647 | 1575 | 1507 | 1445 | 1387 | 1333 | 1284 | 1238 | 1194 | 1153 | 1115 |
Radius (m ) | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | ||
Hoisting Capacity (Kg) | 1079 | 1044 | 1012 | 981 | 952 | 925 | 898 | 873 | 849 | 826 | 805 | 784 | 764 | ||
Multiplying 4 | |||||||||||||||
Radius (m) | 3 11.29 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 |
Hoisting Capacity (Kg) | 4000 | 3736 | 3416 | 3145 | 2912 | 2710 | 2533 | 2376 | 2237 | 2112 | 1999 | 1897 | 1805 | 1720 | 1642 |
Radius (m) | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 |
Hoisting Capacity (Kg) | 1571 | 1504 | 1443 | 1386 | 1333 | 1283 | 1236 | 1192 | 1150 | 1111 | 1074 | 1040 | 1007 | 975 | 946 |
Radius (m) | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | |||||||
Hoisting Capacity (Kg) | 918 | 891 | 865 | 841 | 818 | 795 | 774 | 754 |