China Topless Tower Crane PT7528

PT7528-20T topless tower crane
1). Reduce requirements of lifting equipment when install and dismantle tower cranes.
Because there's no tower head, its unit quality is small, installing height is low, max. Installing
Height is lower 10m than same loading topkit tower crane. For topkit tower cranes, when assemble
Hoisting jibs, have to joint all jib frames, pulling rods and other accessories on the ground, then will
Be lifted compeletely, so that will need large capacity lifting equipment. Because connection of jib tip
Hinge pins, then can lift hoisting jib to connect pulling rod, easy to cause accidents. However, flat top
Tower cranes won't have such condition. Hoisting jibs of flat top tower cranes are 4m, 5m or 10m per
Section, take 50m jib as an example, its unit quality is 1/5 of whole jib, can be installed and dismantle
In the air, that reduce requirements of lifting equipment when install and dismantle, can save freight
Of installing and dismantling, safer and quicker.
2) Suitable for tower cranes group cross operation on the same construction site. Because no tower
Head, cross height can be reduced to 3m when two tower cranes cross operation, topkit tower cranes
Needs 10m at least. Less time of installing, lower capacity requirement of lifting equipment, less ballastings,
Smaller tower body and chassis.
3). Suitable for special work sites. Because no tower head, efficent height of hook and space utilization is
Improved, so are suitable for special work sites, for example, building of airport, tunnel, workshop and work
Under high voltage, topkit tower cranes can't do that as flat top tower cranes.
Mechanism working gradeHoisting mechanismM5Slewing mechanismM4Trolleying mechanismM4Radius (m)Min. 3.5Max. 75Height (m)FreestandingAttaching62200Max. load (t)18Hoisting mechanismHoisting speedFalls2 4Speed (m/min)0~700~350~200~350~200~10Load (t)2.551051020Min. descending speed (m/min)≤2.16Power (Kw)75Trolleying mechanismSpeed (m/min)0~60Power (Kw)7.5Slewing mechanismSpeed (r/min)0--0.8Power (Kw) Jacking mechanismSpeed (m/min)0.35Power (Kw)11Work pressure (Mpa)28Balanced weightMax. working radius (m)757060 50Weight (t)27.624.922.2 18.4Total power (Kw)109(including jacking mechanism)Working temperature -20~+40