2 tons Construction Self Erecting Tower Cranes 25 meters mini jib / boom

Description of Self Erecting Tower Crane

   The main feature of QTK20 fast erected Crane s easy to be quickly erected and be 
completely delivered. When the QTK20 fast erected Crane is folded, it can be delivered 
to the construction site by a truck, then it can be self assembled (including outer tower mast's 
erecting, inner tower mast's stretching from outer mast, jib's unfolding and counter weight
 installation) within a certain time by its own mechanism with the assistance of one mobile 
crane and two workers. 

Specification of Self Erecting Tower Crane

Feature of Self Erecting Tower Crane

1). The inner tower mast can lock or unlock automatically when it has stretched 
or retracted in accurate position.
2). Jib can unfold or fold in th air automatically in the process of tower masts' stretching 
or retracting.
3). Tower mast stretching,jib unfolding and counter weight installation can be finished 
within the whole range from 0° to 360°. It is the same to crane dismounting.
4). QTK20 fast erected Crane is erected by a winch and a whole set of wire 
rope pulley system. 
5). QTK20 fast erected Crane an change from rail travelling to fixed supports 
and vice versa according to requirements.
6). The jib of QTK20 fast erected Crane can go 30° upwards to increase the hoisting 
height with a maximum lifting capacity of 800kg, when the trolley can not move .
7). The hoisting system of QTK20 fast erected Crane has a variable-pole-speed motor. It can 
shift working speed with load.
8). The slewing system of QTK20 fast erected Crane has a hydraulic clutch and brake 
to ensure smooth start.
9). The safety devices of QTK20 fast erected Crane are complete, sensitive and reliable.

Parts of Self Erecting Tower Crane