OPERATOR ASSISTANCE DEVICES Ӏ SECTOR REPORT
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HiVision for Multilift
offers multiple views from three cameras, container landing spot information and dynamic reversing steering lines for safer, easier and more convenient operation of the hooklift, using a touchscreen display inside the truck cabin. In the new version, Hiab has
improved the camera image quality to offer customers safer operation and better efficiency in difficult light conditions such as direct sunlight, pitch dark, as well as rain and snow.
Obstacle detection software is an additional safety feature that minimises the risk of injury to people or damage to equipment.
AUTONOMOUS FUTURE? Other crane manufacturers are looking at diversifying their areas of expertise and moving into new areas, developing equipment that previously they may have outsourced from a specialist. At Bauma 2022 tower crane
manufacturer Wolffkran, for example, demonstrated its new High Speed Positioning System (HiSPS). The HiSPS is designed to eliminate load sway and so increase safety and work efficiency on construction sites. Wolffkran says the system is a technological milestone paving the way to the autonomous crane of tomorrow and claims to be the first manufacturer in the industry to develop and launch such an assistance system. “Digital assistance systems are one of the biggest trends in the construction industry,” comments Thomas Heidrich, Wolffkran CTO. “And the high-speed positioning system takes us a major step closer to a digital, autonomous crane." The company says that while
it typically requires a lot of experience on the part of the crane operator to prevent a load from swinging when moving it
32 CRANES TODAY
across the construction site, this can be done very easily with its newly developed HiSPS. "Normally, the operator
controls the crane from which the load is suspended,” explains Viktor Mosolf, team leader digitalization at Wolffkran. “This inevitably causes the load to swing due to the crane's movement. With our HiSPS assistance system, the crane operator no longer primarily moves the crane but instead controls the load with support of the system, which virtually eliminates the sway." Crane control is achieved by
two battery-powered sensors attached to the trolley and the hook block. Coupled with a control unit in
Liebherr is
developing a range of new digital assistance devices
the switch cabinet, they detect the rope's movements and automatically adjust the motion and speed of the crane accordingly. The assistance system can be
switched on and off as required and operates for up to two weeks on one set of batteries.
Loads already swinging can
be brought to a standstill within seconds which makes work easier in strong gusts of wind, says Wolffkran, reducing the risk of accidents and damage caused by swinging loads.
This optimises the anti-collision
system as not only the crane but also the load in the working range limitation is automatically stopped. "Safety distances from other buildings and cranes can be reduced, which makes setting up the construction site more flexible, particularly in densely constructed inner cities," explains Mosolf. The Wolff HiSPS also provides
more efficiency on the construction site because the crane can be operated from the ground by remote control more readily than before, Wolffkran adds. This saves the crane operator time-consuming climbing up and down from the crane and frees up time for other work on the ground while waiting for the next lift. The HiSPS is available on the
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