Russian firm uses crane to help bridge building

Russian construction company BaltMostStroy has been using a Sennebogen 7700 crawler crane to build bridges along a new freeway route The 300tonne capacity crawler crane has been used to lift prefabricated parts weighing as much as 100tonnes onto the concrete foundations. LLC Lonmadi in St Petersburg is Sennebogen’s Russian sales and service partner and supplied the contractor with the 7700 crawler crane. This versatile crawler crane is being used on demanding infrastructure construction work in Russia. A

May 5, 2015 Read time: 3 mins

The contractor has been using the Sennebogen crane to move components weighing up to 100tonnes while constructing an 800m long freeway bridge

RSSRussian construction company BaltMostStroy has been using a Sennebogen 7700 crawler crane to build bridges along a new freeway route

The 300tonne capacity crawler crane has been used to lift prefabricated parts weighing as much as 100tonnes onto the concrete foundations. LLC Lonmadi in St Petersburg is 6244 Sennebogen’s Russian sales and service partner and supplied the contractor with the 7700 crawler crane. This versatile crawler crane is being used on demanding infrastructure construction work in Russia. A recent task has been the construction of a bridge 800m in length, which forms part of the new A121 highway between St Petersburg and Priosersk-Sortavala. Equipped with a 41m boom and auxiliary jib, the 300tonne capacity crane was used to lift steel elements onto the concreted bridge abutments. This required high precision and was extremely time-intensive, as the machine had to be aligned in order to securely place the necessary chains and straps. The actual lifting itself only took a few minutes.

Over 10 additional bridges are being constructed using a similar methodology along the route. The route features hilly terrain and steep inclines, which provide challenges to machines being used that must be overcome for machine implementation on these particular challenges. Last but not least, the machine must lift heavy components while ensuring that they remain horizontal, and then position them with high precision. This difficult task is said to be aided by the machine’s sensitive controls.

The Sennebogen 7700 model is equipped with an 8m wide crawler undercarriage and 135tonnes of ballast to ensure stability. A powerful 313kW 395 Caterpillar diesel engine drives the two 220kN winches, while an important feature according to the contractor is the machine’s ability to under load.

The compact uppercarriage of the 7700 features a transport width of just 3m, helping to make the 300tonne capacity crane both easy to manoeuvre and transport. The maximum 2.43m width of all the boom sections, as well as the Starlifter undercarriage, are said to make transportation easy even if the machine is being shipped in a container. Meanwhile the booms can be set up in only a few steps due to the innovative self-assembly system.

The driver benefits from the Maxcab cabin, which can be inclined and offers high all-round visibility. The machine is also said to be robust and easy-to-service.
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