Wolffkran said that compact cranes were in high demand at inner-city construction sites. The firm believed that in order to be successful these types of cranes needed to be both powerful and easy to assemble. The engineers from Wolffkran’s facility in Heilbronn focused their latest development on this demographic and in doing so further extended their range of small trolley jib cranes with the flat top Wolff 5014 City.
The new crane has a tip load capacity of 1.4t at a 50m radius and a maximum lifting capacity of 6t. The unit uses a frequency-controlled 28 kW hoisting winch. This winch is positioned on the first jib section, the entire jib, including the reeving of all ropes, with the intention of ensuring that the crane can be easily and safely assembled on the ground. An additional feature allows the machine to be preassembled with the bolted-on counterjib, providing that there is sufficient space at the site. At more confined construction sites, the jib can also be assembled in the air. The jib can be extended in 2.5m intervals between 25m and 50m.
The 5014 City can be erected up to a hook height of 43.5m and is compatible with Wolffkran TFS 15 tower sections. Its design as a 2-rope fall crane means it is not necessary to re-reeve the hoist line when changing over from a 2-fall to a 4-fall operation. The manufacturer added that the hoisting winch design had greater storage and a revised geometry of the drum meaning that it could have a hook path of up to 190m.
Depending on the requirements at the construction site, the WOLFF 5014 City can be operated with or without a cabin. A full range radio remote control with a digital display provides the load data of the crane and transmits the wind speeds, hook height, rotation angle and error messages at all times.
