Difference between revisions of "秋千汲水篮"

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[[Image:swing basket2.jpg|thumb|200px|Lifting the water: a swing basket--a simple but very energetic method. Photo: [http://www.greatmirror.com/index.cfm?navid=169 India Themes: Irrigation 1: Ancient Methods.]]]
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The swing basket is made from cheap materials like woven bamboo strips, leather, or iron sheet to which four ropes are attached. Two people hold the basket facing each other, they dip the basket into the surface water and the basket is lifted by swinging it and emptied into an irrigation channel from which point the water flows to the fields. The work demands heavy physical activity, with adoption of awkward body movements and posture. Yet it can also be operated by women and minor members of the family. The frequency of operation is about 15 to 20 swings/minute. This lifter can be used at depths of up to 1.2 m. Typical flow rates of 60 to 80 l/min are obtained at depths of 0.75 m.
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===Suitable conditions===
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Swing baskets are popular in India and Bangladesh.
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{| border="1" cellpadding="5" cellspacing="0" align="center"
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|-
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! width="50%" style="background:#efefef;" | Advantages
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! style="background:#f0f8ff;" | Disadvantages
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|-
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| valign="top" | - Simple, inexpensive technology which can be locally made and maintained <br>
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- Easy to operate by both adults and children
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| valign="top" | - Limited to lifts of less than 1.2 m <br>
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- Limited water yield 60-80 l/min suitable for small fields<br>
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- Low efficiency (10-15%), big human effort with significant
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water spillage
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|}
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{|border="1" cellspacing="0"
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|-
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|[[Image:swing basket3.jpg|thumb|center|200px|Lifting water from irrigation channel using a swing basket. Photo: [http://www.iloencyclopaedia.org/component/k2/103-farming-systems/manual-operations-in-farming MANUAL OPERATIONS IN FARMING.]]]
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|[[Image:swing basket.jpg|thumb|center|200px|Using a swing basket to dump water into an irrigation canal. Drawing: [http://www.cd3wd.com/cd3wd_40/cd3wd/Practact/KnO-100410-human_animal_water_lifters.pdf Practical Action.]]]
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|[[Image:swing basket4.jpg|thumb|center|200px|Direct irrigation onto field using the swing basket. Photo: [http://en.banglapedia.org/index.php?title=Agriculture Banglapedia.]]]
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|}
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===Acknowledgements===
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* Jane Olley. [http://www.cd3wd.com/cd3wd_40/cd3wd/Practact/KnO-100410-human_animal_water_lifters.pdf HUMAN & ANIMAL POWERED WATER-LIFTING DEVICES FOR IRRIGATION.] Practical Action, November 2008.
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* [http://www.iloencyclopaedia.org/component/k2/103-farming-systems/manual-operations-in-farming MANUAL OPERATIONS IN FARMING.] International Labor Organization.

Revision as of 13:56, 11 January 2016

Swing basket icon.png
Lifting the water: a swing basket--a simple but very energetic method. Photo: India Themes: Irrigation 1: Ancient Methods.

The swing basket is made from cheap materials like woven bamboo strips, leather, or iron sheet to which four ropes are attached. Two people hold the basket facing each other, they dip the basket into the surface water and the basket is lifted by swinging it and emptied into an irrigation channel from which point the water flows to the fields. The work demands heavy physical activity, with adoption of awkward body movements and posture. Yet it can also be operated by women and minor members of the family. The frequency of operation is about 15 to 20 swings/minute. This lifter can be used at depths of up to 1.2 m. Typical flow rates of 60 to 80 l/min are obtained at depths of 0.75 m.

Suitable conditions

Swing baskets are popular in India and Bangladesh.


Advantages Disadvantages
- Simple, inexpensive technology which can be locally made and maintained

- Easy to operate by both adults and children

- Limited to lifts of less than 1.2 m

- Limited water yield 60-80 l/min suitable for small fields
- Low efficiency (10-15%), big human effort with significant water spillage


Lifting water from irrigation channel using a swing basket. Photo: MANUAL OPERATIONS IN FARMING.
Using a swing basket to dump water into an irrigation canal. Drawing: Practical Action.
Direct irrigation onto field using the swing basket. Photo: Banglapedia.

Acknowledgements

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