{"id":9087,"date":"2023-03-30T09:51:28","date_gmt":"2023-03-30T07:51:28","guid":{"rendered":"https:\/\/www.tadano.com\/scandinavia\/about\/news\/tadano-ac-7-450-1-lifts-drilling-rig-over-rows-of-houses\/"},"modified":"2023-12-11T09:19:58","modified_gmt":"2023-12-11T09:19:58","slug":"tadano-ac-7-450-1-lifts-drilling-rig-over-rows-of-houses","status":"publish","type":"news","link":"https:\/\/www.tadano.com\/scandinavia\/en\/news\/tadano-ac-7-450-1-lifts-drilling-rig-over-rows-of-houses\/","title":{"rendered":"Tadano AC 7.450-1 lifts drilling rig over rows of houses"},"content":{"rendered":"\n

As far as Welti-Furrer Fleet Manager Amos Dubacher is concerned, one thing was perfectly clear: \u201cThere was only one crane suited for this job, and that was our new Tadano AC 7.450-1<\/a>. On one hand, it\u2019s compact enough to handle tight space conditions at work sites, and on the other, it has enough reach to lift loads over several rows of houses,\u201d he reports.<\/strong><\/p>\n\n\n\n

The specific project consisted of placing a multi-part drilling rig at various locations in a residential area in Zumikon, close to Zurich, so that the rig would be able to drill holes for ground loops for geothermal heat pump systems. The challenge: The residential area offered precious little space for maneuvering a large crane, and traveling between the houses to get to the drilling sites directly was simply not possible. \u201cThat meant that we had to move the three-part drilling rig to each drilling location all the way from the edge of the residential area each time,\u201d reports crane operator Robert Wendelspiess.<\/p>\n\n\n\n

Laser precision work at a radius of 74 meters<\/strong><\/p>\n\n\n\n

To tackle this challenge, the Welti-Furrer team set up the 80-meter main boom on the AC 7.450-1 with a 69-meter luffing jib, making it possible to carry out the lifts at a maximum radius of 74 meters. And to ensure sufficient stability, they used the crane\u2019s maximum counterweight of 150 tonnes in combination with the optional counterweight adapter frame, which increases the tailswing radius and the lifting capacity as a result. This enabled the team to safely lift the drilling rig\u2019s parts, which weighed up to 6.9 tonnes, over the houses. \u201cAnother tough challenge with the lifts was the fact that we had to lift the drilling rig\u2019s carriage with laser precision every single time. But the AC 7.450-1 was up to the task, and really showed how incredibly precise it is even when working at this kind of huge radius,\u201d Robert Wendelspiess says, full of praise for his machine.<\/p>\n\n\n\n

\u201cCompact like a six-axle crane, powerful like an eight-axle one\u201d<\/strong><\/p>\n\n\n\n

Amos Dubacher can only agree: \u201cThe AC 7.450-1 was the ideal crane for this job. It combines the compact design of a six-axle crane in many areas with the lifting capacities of an eight-axle one \u2013 we couldn\u2019t have asked for something more perfect for the challenging conditions at the site. And to tell you the truth, the fact that we have this extraordinary crane in our fleet makes us really proud,\u201d he happily summarizes.<\/p>\n\n\n\n

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