Reclamation of Jungle by Chain High Ball

Abstract

Reclamation of tropical wasteland is said to be easy on account of the shallow root, so we tried to reclame by Chain High Ball.
Maximam theoretically pull down force of Chain High Ball can reckons to be 36, 361.2kg under the condition that drawbar pull of one tractor is 20, 000kg, drawing road width-4.5m, working width-20m, and running resistance find expression in W=(Gc+Go) (μd/2R+f/R) (kg).
Chain High Ball is drawn by tow angle dozer which maximam horsepower is 225PS. Working width is from 20 to 25 meter
In the place lying scatted tree diameter is measures over 0.4m, two tree dozer was necessary to help at the backward position.
Rate of work was 1.4 times as compared with habitual working method by angle dozer and tree dozer.
Rate of work is decided by many condition, such as working width under making sure circumstances of vegetation and topograpy, to dispose board and prop root of big tree previously, combination working of drawing tractor and backing up tractor and so on.
Therefore it is necessary high operation technic more than standard operation method.
Ball is necessary to keep pull down-point in high position. Diamater 2.45m∅ is temperately dimensions to pull down smoothly without rough clearing.
It is advisable that ball weight have light to reduce running resistance. But sometime tree do not be pulled down on the land perfectly, and lean on the tree of front side. In this case, Ball climb up those tree to break down, and must make from way. 6.02ton weight was suitable under the condition of the forest at Makariki, Indonesia.