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Flat-top Tower Crane PT4810-4

PT4810 flat top tower crane is based on microcomputer design platform of tower crane, applying group technology, combined design technology and FE analysis technology, combining with advanced international technology and requirements of domestic construction market, develop and design more advanced tower crane in China.
The tower crane is horizontal arm support, trolleying, top slewing and hydraulic jacking tower crane. Its jib length is 48m, max. Load moment is 540 KN.m, free standing height is 30m, max. Attached height is 120m (2 falls).
Self-weight of the crane(without balanced weight and anchors) is 21.41t, total capacity of whole crane is 25.1 Kw. Advanced parameters, stable performance, good looking, excellent quality, simple structure, equipped with advanced safety devices, simple maintenance and competitive price make PT4810 tower crane be popular in small and medium construction enterprises.

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Flat-top Tower Crane PT4810

1. Main parameters


Item Unit Magnification
2 falls 4 falls
Rated load moment KN.m 540
Max. load t 2 4
Work radius       m 3-48
Load at max. radius        t 1.0
Radius at max. load        m 27.3 14.79
Hoisting height
 
Independent m 30
Adhered 120 60
Outer size of whole crane Chassis m 6.0x6.0
Height of whole crane Independent  38.284
Adhered  128.284
Tip of jib to the slewing center 48.74
Tip of balanced jib to slewing center 11.425
Self-weight of whole crane Independent  t 21.41
Adhered  t 46.36
Balanced weight t 8.0
Other 
 
Total power of motors Kw 25.1
Work grade at max. height Gradelevel 6
Allowable work temperature -20~40

 
2. Loading chart


4 falls

Radius (m) 3-14.79 15 16 17 18 19 20
Load (t) 4 3.94 3.67 3.44 3.23 3.04 2.87
Radius (m) 21 22 23 24 25 26 27
Load (t) 2.72 2.58 2.45 2.34 2.23 2.13 2.04
Radius (m) 28 29 30 31 32 33 34
Load (t) 1.95 1.87 1.80 1.73 1.67 1.61 1.55
Radius (m) 35 36 37 38 39 40 41
Load (t) 1.50 1.45 1.40 1.35 1.31 1.27 1.23
Radius (m) 42 43 44 45 46 47 48
Load (t) 1.19 1.15 1.12 1.09 1.06 1.03 1.00

 
2 falls

Radius (m) 3-27.3 28 29 30 31 32 33
Load (t) 2 1.94 1.86 1.79 1.72 1.66 1.60
Radius (m) 34 35 36 37 38 39 40
Load (t) 1.54 1.49 1.44 1.39 1.35 1.30 1.26
Radius (m) 41 42 43 44 45 46 47
Load (t) 1.23 1.19 1.15 1.12 1.09 1.06 1.03
Radius (m) 48





Load (t) 1.00





 
3. Technical parameters of mechanisms

Mechanical load factor Hoisting mechanism  JC  40%
Slewing mechanism JC  40%
Trolleying mechanism JC  40%
Hoisting mechanism  Motor Type YZTD200L2-4/8/24
Speed  r/min 1440 720 220
Power kW 15 15 4
Reducer Center distance mm 460
Transmission ratio  i 12.25
Drum Dia. mm Φ330
Layers of rope 4
Capacity  m 280
Speed  r/min 114 57 11.4
Braker  Type  YWZ-250/45-10
Braking force N 450
Wire steel rope Tractive force N 10000
Spec.  6x19-12.5-1770-Ⅰ
Hoisting speed m/min 65.1/31.9 32.6/15.9 13.0/6.4
Rated load t 0.8/1.6 2/4 2/4
Min. Stable descending speed m/min ≤7
Total weight t 1.2
Slewing mechanism Motor  Type  YZR132M-6
Speed  r/min 908
Power  kW 3.7
Reducer  Type  H-100
Transmission ratio i 195
Outputing torque N/m 10000
Slewing bearing Type  QW.40.1120
Small pinion gear No. of modulus m 10
No. of teeth z 13
Modification coefficient x +0.5
Hydraulic coupler Type  YOX280A
Slewing speed  r/min 0.6
QTY of installation set 1
 
Trolleying mechanism
Motor  Type  YD100L2-4/6
Speed  r/min 1440 960
Power  kW 2.4 1.5
Reducer  Model  WCJ120
Transmission ratio 39
Wire steel rope Spec.  6x19-7.7-1550-I
Line speed  m/min 38.6/25.2
Trolleying speed m/min 38.6/25.2
Hydraulic jacking mechanism Hydraulic pump Work pressure MPa 20
Power  kW 4
Type of oil pump GB306
Jacking cylinder Rated pressure MPa 20
Dia. of cylinder mm125
Dia. of piston rod mm90
Stroke  mm 1300
Erection distance mm 1700
Jacking speed m/min 0.4
Max. Jacking force t 24.6

 
 

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Trading office: Zibo Chico International Co., Ltd.
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