Roof Access Systems


Mobile Maintenance and Cleaning Platforms
Type KB-DB-WB
Structure: Maritim Hotel,
Airport City, Düsseldorf

Mobile maintenance and cleaning platforms of type KB-DB-WB for the two glass roofs in the new Maritim Hotel at Airport City, Düsseldorf.

The travelling gears are equipped with smooth-running mechanical crank drives.


Mobile Maintenance and Cleaning Platforms
Type KB-DB-WB for glass roofs
Structure: NOVA EVENTISshopping centre
in Günthersdorf / Leipzig

Several interior and exterior access systems were supplied for the boulevard malls. To reach the skylights, the interior platforms are equipped with mobile, telescopic tower ladders up to 5 m in length. The travelling gears are equipped with smooth-running mechanical crank drives.


Access System for an Ellipsoidal Roof
Structure: Shopping centre in Wiesbaden

Access system for an ellipsoidal roof with two separate working cages as a special solution.

Length adaptation is performed using the main travelling gear via roll guides.

The drive is manually operated via a hand crank on an aluminium rail with friction wheel drive.


Telescopic Roof Access System
Structure: EUP Hamburg

This roof access system can be telescoped from 7 to 11 metres and has an integrated work tower. The drive is manually operated using a windlass chain. There is a rail system with carriages for a BMU motorized gondola below the platform.


Maintenance Platform
Structure: Sporthochschule (Sports Academy) in Cologne

Electrically operated maintenance platform
Electricity is supplied by means of a trailing cable.



Roof Access System with Length Adaptation
Structure: Rhein Energie Stadium in Cologne

Roof access system with length adaptation for cleaning gutters and the makrolon roof of the Rhein Energie Stadium.



Mobile Maintenance Platforms
Structure: Frankfurt main railway station

The ten mobile maintenance platforms (type KB-DB-WB) were manufactured with a curved form, each with a length of 36 metres.
The welded aluminium constructions, each weighing around 1.8 tons, can be moved horizontally by means of smooth-running mechanical windlass drives. Mobile telescope ladders are mounted on the maintenance platforms to reach the skylights.


Mobile Cleaning Platform for Glass Roof
Type KB-DB-WB, span width 20 metres
Structure:Office building of the Deutsche Bundesbahn (German Federal Railway) in Duisburg

Light aluminium constructions of this type greatly enhance the reach of cleaning platforms while simultaneously adapting to the particular contour of the glass roof constructions.
The mechanical drive is operated by means of a manual lever in the centre of the platform using a special cardan shaft joint system, which engages with both travelling gears of the access system. The travelling gears are equipped with an automatic spring pressure break operated by a foot pedal. A cleaning platform based on the same design principle as the exterior access system was also installed for cleaning the glass roof on the inside.


Mobile Cleaning Platform for Glass Roof Pyramid, Type KB-DB-WB
Structure: Cologne-Hürth shopping centre

The pyramid access system is anchored in the centre of the roof construction by means of a central pivot, thereby making only one circumferential rail necessary. The required length adjustment for corner navigation is ensured by a sliding device installed above the central rotary construction. A mechanical manual drive on the rail travelling gear provides for easy operation. An interior access system was also installed on the glass roof pyramid, with a further four access systems being erected on the inside and outside of ridge roofs on the 'Hürth shopping centre'.


Mobile Cleaning Platform for Barrel-Vaulted Roof, Type KB-DB-WB
Structure: MB building, University of Bochum

The approximately 20 metre long, polygonal platform construction made of corrosion-resistant aluminium was designed to suit the geometry of the glass roof. At the client?s request, an aluminium tube system was installed as a rail here. The access system is driven by a manually operated mechanical drive. The travelling gears are equipped with claw brakes to prevent drifting due to wind forces. The cleaning platform is firmly anchored to the rail system in park position. Four structurally identical access systems were mounted on the above-mentioned building.


Access Systems for Stadium Roof
Structure: Fritz Walter Stadium

In the course of reconstruction work on the Betzenberg stadium for the 2006 football world championships, two roof access systems manually operated by means of a mechanical drive were installed on the east and west stands.



Gebr. Käufer GmbH | Mühlenberg 5 | D-42499 Hückeswagen | Tel.: +49(0)2192 9203-0 | Fax: +49(0)2192 9203-33