main features:
1.1.1 Height of the tower crane is confirmed according to height of building, lifting ability of the tower crane is independent of height;
1.1.2 The tower crane is with feature as high working speed, steady work condition and high effieiency;
1.1.3 Hoisting jib has 56M, 50m, 46m, 40m, 36m, 30m,six ranges which meets projects needs more widely;
1.1.4 Safety devices are complete, the working is reliable;
1.1.5 The eyeshot of cab is well, and the cab is installed independently, which creat preferable working condition for handlers.
1.1.6 Location of the tower crane is reaonable, and the externality of the crane is beatiful.
1.1.7 The operation is simple and the maintenance is convenient.
Circumstances for service
Ambient temperature is -20°C to +60°C
Wind speed no more than 20m/s in service;
Wind speed less than 13m/s when erecting, dismantling and climbing;
Safety operation distance is no less than 0.6m
Electric power, voltage: 380V ±10%, frenquency: 50Hz adopts three phases and five lines flr electricity supply. Please contact with the manufacturer if the power supply is different from above condition;
After erection, the perpendiculartity error between tower aixs and side of supporting surface is no more than 4/1000 without wind. The direction is from lifting jib to counter-jib when measure it.
Earthing resistance is no more than 4Ω.
Design basis
The tower crane is designed according to standard GB/T13752-92 ”Tower crane design criterion”, GB/T5031-2008 “Tower Crane”, GB5144-2006 “Tower crane security Regulations”.
The tower crane’s service grade A4, Used gradeU4, Load state Q2
Mechanism service grade:
Hoisting mechanism: M5
Slewing mechanism: M5
Traction mechanism: M3
Trolleying mechanism: M5
The max calculation wind pressure is 250Pa in service, the calculation wind prewssure out of service is shown below:
H = 0-20m
|
800Pa
|
H > 20-100m
|
1100Pa
|
H > 100m
|
1300Pa
|
Our Service
