Vertical Line Finder

Vertical Line Finder helps the crane operator to successfully avoid unwanted load sway due to diagonal pull when lifting a load. When this is activated, the crane automatically controls the slewing gear and trolley and ensures that the load hook is always optimally positioned above the centre of gravity. The automatic aligning of the hook in relation to the load guarantees that the load is always lifted vertically; angled lifting is prevented.

This reduces the risk of swaying and minimises the risk of collisions, which in turn increases safety for those working on site and for sensitive components. Vertical Line Finder is also a huge plus in terms of convenience for the crane operator as the assistant takes over the precise, vertical positioning of the load hook.

Use examples

The photo shows a Liebherr fast-erecting crane lifting building materials onto a construction site. The load consists of yellow-wrapped building components that are securely attached to the hook. The crane arm and parts of the building facade can be seen from a bird's-eye view, while bright clouds stand out against the sky.

Lifting a load without hoist rope sway
When lifting sensitive components like glass fronts, prefabricated façade elements and other sensitive materials, there is a risk of diagonal pull causing the load to sway and cause damage.

Solution: Vertical Line Finder
The assistant ensures that the load is lifted vertically with precision, preventing diagonal pull and sway. This minimises the risk of collisions, which increases safety on site and protects sensitive components from damage.

The photo shows a construction site where a Liebherr fast-erecting crane is lifting wooden and wall elements from a truck onto the building under construction. The house is surrounded by scaffolding, and a construction worker is standing on the truck to prepare the load. Vehicles, building materials, and a green construction site can be seen in the background.

Raising horizontal components e.g. formwork and precast walls
Formwork and precast walls are often delivered lying flat on a truck or stored flat on site. Raising such elements and building components with large surface areas without sway requires increased concentration and operational effort. The operator has to manually adjust the trolley and slewing gear according to the inclination of the component.

Solution: Vertical Line Finder
The assistant automatically takes over the adjustment of the two drives so that walls are lifted evenly and without diagonal pull. This results in the more stable handling of such loads and minimises the risk of damage. It also makes things easier for the operator by taking away the need for manual adjustment.

The image shows a prefabricated concrete stair element being lifted into the air by chains attached to a crane hook. The background consists of a blue sky with white clouds.

Lifting long or unevenly distributed loads
Long or unevenly distributed loads such as steel beams, formwork and flat-lying precast walls can easily start to lean when lifted, which encourages load sway and makes handling more difficult.

Solution: Vertical Line Finder
The assistant automatically corrects the lifting movement so that the load is lifted evenly and without diagonal pull. This ensures a more stable handling of such loads, reduces the risk of sway and minimises the risk of collisions.

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Availability

Vertical Line Finder is available as an option for the 25 L & 33 L and the 43 K, 61 K & 91 K.

TO THE L SERIES

TO THE K SERIES

Other assistance systems

The image shows a graphic representation of a construction site scene: a crane is lifting a large solar panel while a construction worker stands on a roof and directs the crane operator with one hand. Fields, trees, and a building can be seen in the background under a clear sky with light clouds. The motif conveys safe and precise work with modern crane technology when lifting and placing sensitive components. — Sway Control & Sway Control Plus

The image shows a stylized construction site scene in which a crane is precisely lifting a large slab over a pipe system. Two construction workers wearing helmets and high-visibility vests are supervising the process—one on the ground and one on scaffolding. Yellow lines in the background visualize the planned path of movement for the load. — Positioning Pilot

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The image shows a stylized construction site scene: A construction worker wearing a hard hat and work clothes is manually operating the hook of a crane. A yellow circle and arrows are marked on the ground to indicate the direction of movement. On the right-hand side of the image is a packaged beam that is to be lifted. The scene illustrates the operating principle of the Liebherr Guided Hook assistance system, which allows the slinger to control the crane hook directly and precisely. — Guided Hook

The crane operator is responsible for lifting and moving the load safely. The assistance systems are there to provide support. Liebherr recommends that crane operators undergo crane operator training.
The assistance systems are not always useful in all lifting situations, e.g. in confined areas, which is why they can be activated and deactivated at any time.

Vertical Line Finder

Use examples

Availability

Other assistance systems

Notes on use:

Technical information in detail

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