Hammerhead Tower Crane, QTZ40 TC4808-4

Hammerhead Tower Crane, QTZ40 TC4808-4
Hammerhead Tower Crane, QTZ40 TC4808-4
Hammerhead Tower Crane, QTZ40 TC4808-4
Hammerhead Tower Crane, QTZ40 TC4808-4
Hammerhead Tower Crane, QTZ40 TC4808-4
Hammerhead Tower Crane, QTZ40 TC4808-4
Hammerhead Tower Crane, QTZ40 TC4808-4
Hammerhead Tower Crane, QTZ40 TC4808-4
Hammerhead Tower Crane, QTZ40 TC4808-4
Hammerhead Tower Crane, QTZ40 TC4808-4
Hammerhead Tower Crane, QTZ40 TC4808-4
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, QTZ40 TC4808-4
Overview

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
Technical Parameters

Hammerhead Tower Crane Specifications
Total Power: 25.1kW
Voltage: 380V10
Frequency: 50Hz/60Hz

Technical Parameters
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
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 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
Hoisting Characteristics
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
Hoisting Characteristics Curves
QTZ40 Hammerhead Tower Crane Moment Curve (Multiplying 2)
QTZ40 Hammerhead Tower Crane Moment Curve (Multiplying 4)
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