Product Details

Tower crane

The tower crane is a combination of advanced technologies of the present day. It is equipped with a

hydraulic self-raising mechanism and a frequency-converting slewing mechanism.

The electric control system of the tower crane adopts the advanced “PLC + frequency converter”

control mode of the present day, which has realized the stepless speed regulation and greatly

improves the reliability, maneuverability and stability of the control system and the work efficiency of

the tower crane.

The tower crane is equipped with all kinds of reliable safety devices, such as hoisting height limiter,

slewing range limiter and multifunctional limiter to control the load moment, hoisting capacity and

trolley traveling range. Its PLC (Programmable Logic Controller) unit can diagnose the cause of

breakdowns.

The use of worldfamous electric components such as OMRON, YASKAWA, Schneider (TE) and MEAN WELL greatly

reduces the failure rate of the electric control system and improves the work efficiency of the users.

Besides, there are also electric safety devices like anemoscopes and obstacle lights and mechanical

safety devices to prevent the breaking of trolley axles and wireropes.

Model	QZT 31.5 (4264)	QZT 31.5 (4075)	QZT 31.5 (3883)
Jib Length (M)	42	40	38
Free Height (M)	30 (12 mast sections)	30 (12 mast sections)	30 (12 mast sections)
Max. Possible Height (M)	100	100	100
Max. Load (T)	3	3	3
Tip Load (T)	0.64	0.75	0.83
Wall-attached Devices for Max Height (sets)	5.	5	5
Main Material (mm)	125×125×10 (Angle Steel)	125×125×10 (Angle Steel)	125×125×10 (Angle Steel)
Mast Section Dimension (m)	1.5×1.5 ×2.4	1.5×1.5 ×2.4	1.5×1.5 ×2.4
Hoisting Speed (a=2) (m/min)	57.3/26.6/5.2	57.3/26.6/5.2	57.3/26.6/5.2
Min. Stable Falling Speed (m/min)	5.2	5.2	5.2
Slewing Speed (r/min)	0-0.77	0-0.77	0-0.77
Radius-changing Speed (m/min)	21/42	21/42	21/42
Jacking-up Speed (m/min)	0.7	0.7	0.7
Total Motor Power (kw)	21.4	21.4	21.4
Power Supply	380V/50HZ	380V/50HZ	380V/50HZ
Weight of Independent Structure (T)	18.96	18.96	18.96
Counterweight (T)	5.2	5.2	5.2
Base Form	Cross-shaped beam, with slanting stay bars, without ballast	Cross-shaped beam, with slanting stay bars, without ballast	Cross-shaped beam, with slanting stay bars, without ballast
Containers Needed for Shipment (30m)	3 * 40’HC containers	3 * 40’HC containers	3 * 40’HC containers