Browsing by Author "Wanigasinghe, N"

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    item: Conference-Extended-Abstract
    Analysis and design of garbage compacting tractor trailer for Sri Lanka
    (2008) Wanigasinghe, N; Wijesinghe, A; Fernando, MARV; Piyasiri, TA
    Low efficiency in collection and transportation of garbage and environmental pollution with the currently available vehicles such as open dump trucks, tractor trailers are two of the main problems encountered in solid waste management in Sri Lanka. This paper proposes an innovative design using a currently available tractor trailer improve above problems. The capacity of waste transported is improved by compacting the garbage using a hydraulic system. A closed body is built with safe unloading system to overcome the environmental pollution.
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    item: Thesis-Abstract
    Design of a garbage compacting tractor trailer hydraulic system
    (7/22/2011) Wanigasinghe, N; Fernando, MARV
    The most common motorized vehicle used for garbage transportation in Sri Lanka is the tractor with an open trailer. Garbage is transported in an open system causing unpleasantness, pollution, bad smell, poor hygiene and over spillage. The objective of the proposed design is to improve the capacity of garbage handled by the open tractor-trailer per each transport cycle and to improvise a closed system for waste transport to improve hygienic standards. The proposed design is one in which an existing tractor-trailer is modified to a rear loading trailer. While loading, the garbage will be compacted using a hydraulic system to overcome the low productivity. A hydraulic pump, solenoid valves, hydraulic cylinders and an electrical system are used for this construction. Apart from this, the trailer body is modified into a closed body. The measured value of solid waste currently handled per single load which is approximately 1000 kg, will be improved to about 2000 kg per load. The closed system will minimise the environmental pollution present in the existing system. These modifications to the existing tractor trailer would help to improve the present standards of , solid waste management at a relatively low cost. The cost of installation of the hydraulic system and constructing a closed body IS approximately seven hundred thousand rupees.