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AMCS anti-collision system allows mobile cranes and tower cranes to operate simultaneously

AMCS technologies  DCS 61-S anti-collision system

The AMCS technologies teams have commissioned an anti-collision system between a Demag AC55-3 mobile crane and one of the four Wolff 7534.16 tower cranes dedicated to the construction of the operations centre for lines 16 and 17 of the Grand Paris Express in Aulnay-sous-Bois.

For several weeks, this mobile crane worked within the range of action of one of the tower cranes. The two machines must respectively meet deadlines and therefore be productive as the construction of the 11 buildings must be completed by 2024.

The DCS 61-S came up as the ideal solution to address safety and work issues as the system adapts to immediate decision-making and the daily needs of the site while guaranteeing productivity and safety with a single product.

The systems placed on tower and mobile cranes are connected via a radio network and constantly exchange all sensor information. Due to mobile antennas, every DCS 61-S connected in the anti-collision network knows the positions of the mobile crane's elements at any moment. The screen installed in the crane operator's cabin provides them with all of the information in real time.

The tower crane operators are directly alerted when a mobile crane arrives and enters its working area. When the mobile cranes move and reposition themselves in a different area to work, the tower crane devices automatically detect their movement and positions.

The device calculates the distances between each element of the cranes as well as the movement speeds. This is to intervene on the cranes control mechanism to ensure it slows down, followed by a complete immobilization of the tower crane at a pre-set distance from the mobile crane.

For the mobile crane, the device emits an increasingly loud audible signal when approaching an interfering tower crane or a prohibited overflight area.

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