China Factory Produce Mobile Self Erecting Tower Crane 4 Ton Short Boom Tower Crane

JFYT2227-40Self -Erecting Tower Crane  is the new type buliding tower crane, it is the initiate in the domenstic
this machine is horizontal boom,trolley luffing, low level slewing self erecting tower crane,the max radius is 27m, max hoisting capacity is 4000kg, rated load moment is 10t.m. the main characteristics as following 
 

1.  Upside used hydraulic jacking system to realize to make mast stand up and fold, pull boom up and down by pull rod  balance mechanisms at the same time, it will take only 10 minutes to realize from folded state to working state,working speed is high, adjusting performance is good, working is stable and efficiency is high
2.  lifitng mechanisms adopt the 3 phases 380V motor and the hishfr speed is 32m/min. trolley run in horizontal boom, drive reducer is worm gear reducer to make the trolley have goods positioning performance ,swing, structure  uses planerary to fit fluid couping, high load ability, use inverter control stable starting and braking, reliable working
3.  full safety devices and all sructures have brake promise a stable and reliable opeartion , this crane has lifitng .height limit, weight limit,crane limit, crane swing brake and other safty devices
4.  wirelesss remote opeartion, reducing working labor strength,having wide opearting view, creating good evvironment boom is rigid single pull rod support, lightly and ingeniously strcture
5. no special production foundation concrete for workplace, save a lot of time, manpower, material resources, chassiss brings its types, which can make the machine start quickly
6.rational distrubution , nice appearance 
7.easy to use, easy to maintence 

Advantages of self erecting tower crane:

1.Without foundation, saving construction cost, low requirement for site conditions.

2.Erecting and starting rapidly.

3.None working on the high level during erecting and dismounting.

4.Mast locked automatically, jib sections connected automatically in the air.

5.No require professional operator,operating simply, mastering easily.

6.Wireless remote operating,reducing working labor strength,having wide operating view.