Hammerhead Tower Crane, QTZ50 TC4810-4

Hammerhead Tower Crane, QTZ50 TC4810-4
Hammerhead Tower Crane, QTZ50 TC4810-4
Hammerhead Tower Crane, QTZ50 TC4810-4
Hammerhead Tower Crane, QTZ50 TC4810-4
Hammerhead Tower Crane, QTZ50 TC4810-4
Hammerhead Tower Crane, QTZ50 TC4810-4
Hammerhead Tower Crane, QTZ50 TC4810-4
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, QTZ50 TC4810-4
Overview

QTZ50 TC4810-4 hammerhead tower crane consists of a horizontal arm, a jib, a hoisting mechanism, a trolleying mechanism, a slewing mechanism, a hydraulic jacking system and a cabin. As a high-level slewing tower crane, our tower crane now 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.

The fast-erecting crane has a lot of merits. Firstly, the jib, held by rigid duplex pull rods, features good rigidity, light weight, small cross section, small wind resistance, uniform force distribution and good-looking appearance. Secondly, in the hoisting mechanism, a three-speed motor and a single-stage gear reducer used can ensure low-speed heavy loading and high-speed light loading. The maximum hoisting speed reaches 62.5 m/min. Furthermore, the operators cabin runs along the horizontal arm with traction by the trolleying mechanism, which leads to perfect positioning. 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.

Besides all the characteristics above, the hammerhead tower crane is designed with some new features. It comes with a newly-developed chassis, which ensures uniform force exposed to the joint part between the slab and mask sections, thereby improving the tower cranes lifetime and safety factor. Instead of a one-piece jib, the self-erecting crane utilizes a jib made up with multiple sections. In addition, a dismounting tool is installed on the middle section to facilitate disassembly. Moreover, twist control devices are added to prevent the steel wire rope from twisting together and release the ropes twist force to further avoid fracture.

The hammerhead tower crane can automatically lift itself by adding mask sections with the help of a hydraulic cylinder. Hence, the crane can rise with a building's ascending. Furthermore, it can be fixed on a base or attached to an external wall. Its freestanding height is 30 meters, while its attached height can be 140 meters and 70 meters respectively for situations with multiplier as 2 and 4. Therefore, it is suitable for different construction projects.

  • Mast Section
  • Jib
  • Detail Description
  • Turntable
Technical Parameters

Hammerhead Tower Crane Specifications
Total Power: 21.2kW
Voltage: 380V10
Frequency: 50Hz/60Hz

Technical Parameters
Multiplying 2 4
Rated Load Moment kNm 500
Maximum Hoisting Capacity t 2 4
Radius at Maximum Hoisting Capacity m 26 13.8
Tip Load t 1 0.98
Hook Radius m 3- 48
Freestanding Height 30
Hoisting Speed m/min 62/31/9 31/15.5/4.5
Rated Hoisting Capacity T 1/2/2 2/4/4
Slewing Speed r/min 0.6
Trolleying Speed m/min 40/20
Minimum Steady Descending Speed 9
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
Others Total Motor Power KW 21.2
Maximum Working Wind Speed m/s 20
Maximum Jacking Wind Speed 12
Working Temperature -20 C - 40C
Support Mechanisms
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 38
Steel Wire Rope Specification 6X19W-7.7-1550-FC-ZS
Line Speed m/min 40/20
Trolleying Speed 40/20
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 62.5/31/9 31.3/15.5/4.6
Rated Hoisting Capacity T 1/2/2 2/4/4
Minimum Steady Descending Speed m/min 9
Slewing Mechanism Motor Model YZR132M2-6
Speed r/min 910
Power kW 3.7
Slewing Mechanism 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
Maximum Jacking Capacity t 27
Hoisting Characteristics
48m Multiplying 2
Radius (m) 3 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
Hoisting Capacity (Kg) 2000 1979 1888 1803 1724 1654 1591 1534 1483 1437 1396 1357 1319 1282 1248
Radius (m) 41 42 43 44 45 46 47 48
Hoisting Capacity (Kg) 1215 1182 1150 1119 1089 1059 1029 1000
48m Multiplying 4
Radius (m) 3 13.8 14 15 16 17 18 19 20 21 22 23 24 25 26 27
Hoisting Capacity (Kg) 4000 3940 3888 3750 3487 3254 3046 2860 2693 2541 2403 2277 2162 2055 1957
Radius (m) 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42
Hoisting Capacity (Kg) 1866 1781 1702 1632 1569 1512 1461 1415 1374 1335 1297 1260 1226 1193 1160
Radius (m) 43 44 45 46 47 48
Hoisting Capacity (Kg) 1128 1097 1067 1037 1007 978
42m Multiplying 2
Radius (m) 3 26.9 27 28 29 30 31 32 33 34 35 36 37 38 39 40
Hoisting Capacity (Kg) 2000 1997 1906 1821 1742 1672 1609 1552 1501 1455 1414 1375 1337 1300 1226
Radius (m) 41 42
Hoisting Capacity (Kg) 1233 1200
42m Multiplying 4
Radius (m) 3 14.3 15 16 17 18 19 20 21 22 23 24 25 26 27 28
Hoisting Capacity (Kg) 4000 3894 3756 3493 3260 3046 2866 2699 2547 2409 2283 2168 2061 1963 1872
Radius (m) 29 30 31 32 33 34 35 36 37 38 39 40 41 42
Hoisting Capacity (Kg) 1787 1708 1638 1575 1518 1467 1421 1380 1341 1303 1266 1232 1199 1166
36m Multiplying 2
Radius (m) 3 27.8 28 29 30 31 32 33 34 35 36
Hoisting Capacity (Kg) 2000 1992 1907 1828 1758 1695 1638 1587 1541 1500
36m Multiplying 4
Radius (m) 3 14.8 15 16 17 18 19 20 21 22 23 24 25 26 27 28
Hoisting Capacity (Kg) 4000 3980 3842 3579 3346 3132 2952 2785 2633 2495 2369 2254 2147 2049 1958
Radius (m) 29 30 31 32 33 34 35 36
Hoisting Capacity (Kg) 1873 1794 1724 1661 1604 1553 1507 1466
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