The performance parameters of QT 1-2 and QT 1-6 tower cranes are introduced.

QT 1-6 tower crane, lifting weight 2-6t, lifting radius 8-20m, maximum lifting torque 400-500kN.m and lifting height 40m.

The lifting weight of QT 1-2 tower crane is 1-2t, and the lifting moment is160kn.m.

The trolley luffing jib tower crane realizes luffing through the trolley installed on the horizontal jib track. Its advantages are large amplitude range, the loading trolley can approach the tower body, and the load is variable. However, its disadvantages are: the stress of the boom is complex, and the structural requirements are high. The boom and trolley must be located on the upper part of the building, and the installation height of the tower tip is higher than the roof of the building 15-20m.

Extended data:

Can be divided into mobile tower crane and fixed tower crane.

Mobile tower cranes can be divided into four types according to different walking devices: crawler, tire, automobile and crawler. The tower body of the track tower crane is fixed on the walking underframe, which can run on the specially designed track with good stability.

It can walk with heavy load and has high working efficiency, and is widely used in construction and installation projects. Tyre-type, automobile-type and crawler-type tower cranes have no track device, so they are easy to move, but they can't walk with load and have poor stability.

Baidu encyclopedia-tower crane