Monorails in Central Java

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Monorail in the Grobogan Forest District (north of Purwodadi)

The monorails in Central Java were used to transport wood from the mountain forests of Central Java to the rivers.

history

In 1908 and 1909, the forester HJL Beck built a hand-operated monorail of limited but sufficient capacity in the northern Surabaya forest district for the transport of kindling and firewood . In later years, this idea was further developed by LA van de Ven, who was a forester in the Grobogan forest district ( north of Poerwodadi ) around 1908–1910 . He devoted himself to the planning, construction and operation of monorails, especially monorails with larger capacity for heavier transport. His thought was that the construction and maintenance of monorails in hilly terrain, apart from saving one rail , would be considerably cheaper than that of the usual two-rail tracks , such as that of the Cepu forest railway . As a result, monorails were built by the plantation operators and wood processing companies all over the mountains of central Java. There were monorail lines in the forest administrations Grobogan, Undakan , Monggot , Cepu and Djombang - Babat . In 1919/1920, however, the hand-operated monorails gradually disappeared and were replaced by narrow-gauge railways with steam locomotives , as the use of the forest changed.

functionality

The metal rail of the monorail at Babat ( Lage ) was laid at a height of about 3 meters on sawn-off tree stumps or on buried posts. W-shaped carriages with an extremely low center of gravity were moved on the rails by gravity or by hand. Even in the sharpest corners, the swinging cars couldn't get off balance . Even in the rainy season , when the forest paths turned into swamps, the timber was transported undisturbed in lofty heights on the sawn trees.

  • Typical monorail trolleys

  • Grobogan monorail

  • Monorail for 6 m³ or about 5 tons of wood

  • Monorail at Tjepoe ( Cepu )

Web links

Commons : Monorails in Indonesia  - collection of pictures, videos and audio files

Individual evidence

  1. ↑ a b Ch. S. Lugt: Het boschbeheer in Nederlandsch-Indië. 1933, pp. 75-76. Quoted in: Rob van de Ven Renardel de Lavalette: De Monorail van Grobogan.
  2. ↑ Thank you. Bataviaasch Nieuwsblad, July 16, 1913.
  3. ↑ a b c Augusta de Wit: Een bevloeiingswerk (An irrigation system) . In: Natuur en Menschen in Indië (Nature and People in India), 1921, page 125. First published in Nieuwe Rotterdamsche Courant, Avondblad A, November 30, 1911. Quoted in: Rob van de Ven Renardel de Lavalette: De Monorail van Grobogan.
  4. ↑ pernah ada Monorel hutan (forestry monorail) di Jawa. Ziarah Spoor, December 13, 2012.