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Design and Development of a Self Propelled Reaper

MA Zami
Principal Scientific Officer and Head
Workshop Machinery and Maintenance Division, Bangladesh Rice Research Institute (BRRI), Gazipur-1701, Bangladesh

Senior Scientific Officer,
Senior Scientific Officer,
Workshop Machinery and Maintenance Division, Bangladesh Rice Research Institute (BRRI), Gazipur-1701, Banglade

BK biswas
Senior Scientific Officer,
Workshop Machinery and Maintenance Division, Bangladesh Rice Research Institute (BRRI), Gazipur-1701, Banglade

Md Altaf Hossain
Senior Scientific Officer,
Workshop Machinery and Maintenance Division, Bangladesh Rice Research Institute (BRRI), Gazipur-1701, Banglade

Abstract/ Executive Summary:

A self-propelled reaper for harvesting rice and wheat was designed and developed in the research workshop of BRRI. The gearbox was mounted to the chassis of the reaper and tested for 1.0 and 1.2-meter reapers. The effective field capacities of 1.0 and 1.2-meter reapers were 0.251 and 0.31 ha/hr, respectively for harvesting rice. The equivalent values for wheat were 0.246 and 0.32 ha/hr, respectively. Similarly, field efficiency of 1.0 and 1.2-meter reapers was 71.7 and 73.8%, respectively for rice. The equivalent values for wheat were 70.3 and 76.2%, respectively.

Keywords: BRRI reaper, Manual harvesting, Performance, Paddy fields, Whaet fields

Location: Bangladesh Rice Research Institute (BRRI), Gazipur-1701, Bangladesh

Start Date:

End Date:

Program Area: Farm Mechanization

Commodity: Product development

Objectives:

To compare the performances of different reaper heads for harvesting rice and wheat

Methodology:

BRRI self-propelled reaper was developed for harvesting rice and wheat with 1.0 and 1.2-meter reaper heads. In this study, both the reaper heads were tested for harvesting rice and wheat in BRRI farm to evaluate the performances and were compared with each other.

Source of Information: RBRI Annual Report, 2009-2010, pp 269-271

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Fuel consumption of 1.0 and 1.2 meter reapers were 3.03 and 2.66 l/ha, respectively for rice. The equivalent values for wheat were 2.52 and 2.47 l/ha, respectively.
The effective field capacities of 1.0 and 1.2 meter reapers were 0.251 and 0.31 ha/hr, respectively for harvesting rice. The equivalent values for wheat were 0.246 and 0.32 ha/hr, respectively.
Similarly, field efficiency of 1.0 and 1.2 meter reapers was 71.7 and 73.8%, respectively for rice. The equivalent values for wheat were 70 and 76.2%, respectively.
Total grain losses of rice during harvesting by 1.0 and 1.2 meter reapers and manual harvesting were 2.87, 2.43 and 7.40%, respectively. The equivalent values for wheat were 2.5, 2.31 and 5.20%, respectively.

The effective field capacity is higher in 1.2 m reaper and on the other hand fuel consumption, harvesting time and cost are lower than those of 1.0 m reaper and manual harvesting. So harvesting with 1.2 m self-propelled reaper will be beneficial /profitable to the farmers.

Knowledge Management: Report/Proceedings