zek HYDRO 2021

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HYDRO

Canada, Bhutan, Costa Rica, Germany, Albania, Italy, South Africa – these are just a few countries where plant operators rely on the technical knowhow of Austrian Braun Maschinenfa­ brik GmbH and the top-quality performance of the company's trash rack cleaners. The product range of the hydraulic steel engineering experts covers trash rack cleaning machines in a variety of designs. From large-scale to small-scale power plants, Braun has the solution to all requirements and application needs. A few years ago the Vöcklabruck hydrotech industry specialists reacted to the increased demand for horizontal rake systems and are now able to offer this variation with the superior technology Braun is known for today.

photo credits: Braun

BRAUN'S TRASH RACK CLEANERS IN DEMAND AROUND THE WORLD Braun Maschinenfabrik GmbH's largest trash rack cleaning machine with an articulated arm is employed at the “Sohlstufe Lehen” power plant in Mozart's hometown.

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LARGER – FARTHER – HEAVIER The trash rack cleaning machine with an articulated arm is a tool that moves along tracks and consists of a traction and a rotary drive. The balance weight, the booth, the switchboard and the hydraulic power unit are asphoto credits: Braun

raun Maschinenfabrik, based in Upper Austria, has been engaged successfully in the fields of hydraulic steel engineering and the construction of trash rack cleaning machines for over 50 years. Braun offers individual solutions to power plants of all sizes with a comprehensive product range. Braun's portfolio covers conventional cable winches, hydraulic telescopic arm trash rack cleaners, fully automatic cleaning machines with articulated arms that are movable along tracks, as well as all usual types of trash rack cleaners. Braun's largest trash rack cleaning machine with an articulated arm is employed at the Sohlstufe Lehen power plant in Salzburg. This machine is a showcase project in its own right as the parameters for dimension and total weight have broken many inhouse records.

The horizontal rake system has proven itself to be reliable, robust and efficient.

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sembled on the rotating upper operating console. The main arm has a total length of 14 m and a weight of 5 tons and is also attached to the upper operating console. The cleaner rake is attached together with the grabber to the lower end of the 12.3-m-long articulated arm. During the cleaning process the rake tines of the cleaner rake enter the fine rack. At this stage the grabber is open and will not close around the collected debris until it reaches the water surface. The grabber bottom is rotatable and is put into the initial position during the cleaning process. After the cleaning process is completed the grabber bottom on the upper end of the rake is slewed all the way up. The collected debris falls into the rake through this “spooning-like motion”. Then the grabber closes and the trash rack cleaner moves to the container. During the emptying process the grabber bottom is slewed all the way down and the debris falls out of the rake. In this position the grabber is securely holding on to debris of any size.

May 2021

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