The Grave Weir and Lock Complex is located on the River Meuse between Grave and Nederasselt and consists of a weir and two adjacent locks. The John S. Thompson Bridge crosses the complex. The weir and bridge were designed and constructed as a single structure and entered service in 1929.
Recently, part of the complex underwent renovation, including the replacement of the weir crane. For the drive system of this crane, ATB Automation supplied two coupled ADE electromechanical cylinders.
The crane is used to install and remove the weir gates. By raising or lowering a gate within a supporting frame, approximately 20 m³ of water per second more or less can pass through the weir. This enables the water flow of the River Meuse to be regulated and the required water level to be maintained.
The supporting frames themselves can be lifted towards the bridge using a cable system. When the frames are fully raised, a free passage through the weir is created. Ships can then pass the weir without having to use the adjacent locks.
The two coupled ADE electromechanical cylinders act as the drive system within the renovated crane and play a crucial role in this unique civil water infrastructure application.
We supply slewing ring bearings, oscillating mountings, tensioner devices from stock and we also have spiral bevel gearboxes, servo gears and electromechanical actuators in our delivery program.
In addition we also select and offer the right components and systems for motion control solutions, such as servo gear motors, linear servo actuators and complete XYZ cartesian systems.
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