Largest sea lock in the world
The new sea lock is 70 meters wide, 500 meters long and 18 meters deep, making it the largest sea lock in the world at the moment. The new sea lock is expected to be available for shipping by the end of 2022.
Upper roller carts (2 pieces)
The upper roller carriage drives the lock gate to open or close it. The upper roller carriage is now on a rail at the top of the door axle and will later be connected to the door. The dimensions of these top roller carts are 14 x 7 x 5.5 m high and each weigh 200 tons. The 2 top roller carriages are attached to the 2 operational lock gates and drive the lock gates with a total of 6 hydraulic motors. This is done by driving wheels, so-called bumpers, that engage a pin track, pushing the door back and forth over the threshold. The steelwork and mechanical parts for these upper roller carts were manufactured by Hollandia Infra on behalf of OpenIJ. The hydraulic parts were made by Bosch Rexroth and the E-installations were realized by OpenIJ. The top rollers were driven onto the pontoon at the Hollandia shipyard by means of SPMTs. After a stopover at the logistics center in the Alaskahaven in Amsterdam, where BRW’s were tested, the top roller carts were unloaded at OpenIJ and went into storage. The mounting of the top roller carriages in the front door frames resp. the outer head and the inner head were carried out during 2020 by the Hollandia Infra assembly team.
The scope for Hollandia Infra
Hollandia Infra carried out the movement work for this new lock complex to open and close the heavy steel lock gates. Hollandia has been involved in the engineering and preparation work from an early stage in the project and has made a significant contribution during the design phase for construction details and the most efficient construction method. The activities involved the design, delivery and assembly of various components for the new large sea lock, ready for operation.
This mainly includes the delivery of:
• Two upper roller carts with accessories (each 14mx7mx5.5m / 200 tons).
• Three undercarriages (including 1 spare car), two rail beams for the undercarriages (80m).
• Four foundation beams of 80m.
• Four pin tracks with rails of 80m for the top roller carriages.
The steel roller doors were contracted out by the consortium itself in South Korea and each measure 80x 12 x 24 m (lxwxh) and each weigh approximately 3,000 tonnes.
In collaboration with Bosch Rexroth, Hollandia has hoisted the 16 hydraulic cylinders and 2 power packs and installed them in the door of the outer head. The cylinders, each about 4 meters long and weighing 1.5 tons, will drive the 16 leveling gates used to lock the 500 x 80 meter gully. Hollandia Infra carried out this work for all three lock gates.