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绳子与水桶

120 bytes removed, 07:28, 25 October 2015
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====维护====
The bucket is lowered and raised by playing out and pulling in the rope, or by rotating the windlass. Care must be taken to prevent the rope or bucket from be- coming soiled. Preventive maintenance consists of greasing the bearings of the windlass or pulley.Small repairs are limited to patching holes in the bucket and hose, reconnecting the hinge of the bucket, and fixing the windlass bearings or handle. All small repairs can be done by local people, and with tools and materials available in the community or area. Major repairs and replacements mainly consist of replacing the bucket, hose, rope, or part or all of the windlass. Woven nylon ropes may last for two years, but twined nylon or sisal ropes last only a few months. A good-quality hose may last for over two years, and most buckets last a year (depending on the material and quality). When people use their own rope and bucket, no extra organization is required. For community wells, a community committee usually organizes the maintenance and cleaning of the well, maintenance of the windlass, etc. Most repairs can be paid with ad hoc fund-raising.水桶的升降由放绳和拉绳,或旋转绞盘来控制。一定要小心防止绳子或水桶受到污染。预防性的维护包括给绞盘或滑轮的轴承上油。小型维修仅限于修补水桶和软管上的洞眼、重连水桶上的铰链及修复绞盘的轴承或把手。所有的小型维修可由当地人完成,工具和材料可从社区或本地区就地取材。大型维修、置换主要包括更换水桶、软管、绳子及部分或整体的绞盘。编织尼龙绳可用两年,但
Brikke和Bredero在其著作''[http://www.who.int/water_sanitation_health/hygiene/om/linkingintro.pdf 社区供水与公共卫生中的技术选择与运行维护:规划师与项目工作者参考资料]'' 中,推荐下列图表中的运行与维护工作:
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