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[Audio] Vegetable cultivation plays a crucial role in ensuring food security and generating income for developing countries. Despite its importance, traditional manual transplanting methods are plagued by inefficiencies, resulting in reduced crop yields. Farmers, particularly those with limited access to modern machinery, struggle to increase their productivity. To address this challenge, our project aims to design a manual vegetable transplanter that ensures consistent planting, reduces labor demands, and boosts efficiency. The transplanter will be designed to be affordable, user-friendly, and adaptable to different soil conditions, ultimately enhancing the sustainability of vegetable farming.

[Audio] The manual vegetable transplanter was designed to ensure uniform planting, reduce labor demands, and improve the overall sustainability and profitability of vegetable farming..

[Audio] The objective of this project is to design and develop a manual vegetable transplanter that enhances planting accuracy and efficiency through a mechanical system. We will also evaluate the machine's performance and refine its design through hands-on testing. Furthermore, we aim to optimize the mechanical components to ensure cost-effectiveness and ease of use for small-scale farming within the project timeframe..

[Audio] The mechanism operates by pulling the handle, which sets the two connected wheels in motion. These wheels are linked by a steel bar that drives a series of gear wheels. The gears then transfer power to a rotating top circular plate with evenly spaced holes that hold the seedlings. As the plate rotates, seedlings are dropped into planting positions aligned with a cutting blade. The cutting blade's movement is controlled by a lobe wheel, which is powered by another gear system connected to the steel bar. The lobe wheel presses the blade downward to create a planting hole, and a spring mechanism lifts the blade back into position. This cycle ensures precise and continuous planting as the machine moves forward. Additionally, the furrow wheel guides the machine along a straight path, ensuring stability and proper alignment during operation, while the marker controls the row spacing by indicating where the next planting row should be positioned..

6. Design. Figure : Manual Vegetable Transplanter.

[Audio] The team conducted a thorough analysis of the project's needs to determine the essential materials and components required for the manual vegetable transplanter. They compared quotes from various suppliers to guarantee budget compliance. Critical components like gears, chains, and cutting blades were prioritized for procurement, ensuring they met the required quality standards for optimal performance..

[Audio] The team utilized SolidWorks to create three-dimensional models of the machine, incorporating crucial components like the seedling rack, cutting blade, and gear system. Simulations were conducted within SolidWorks to assess the design's functionality, considering aspects such as stability, planting accuracy, and user-friendliness. Based on the simulation outcomes, the design was refined to enhance efficiency and mitigate potential operational problems. Detailed drawings and schematics were created to serve as blueprints for prototype development..

[Audio] We conducted a thorough analysis of the gear ratios and mechanisms to determine the most effective way to drive the machine. We designed and tested the gear system to guarantee smooth and consistent motion for our planting operations. Our focus was on achieving the desired planting depth and spacing by calibrating the cutting blade mechanisms. Additionally, we evaluated the possibility of incorporating a camshaft-like lobe wheel to control vertical movements, thereby ensuring precise seed placement..

[Audio] Each team member has made significant contributions to this project. K.P.A.S.B. Dissanayake ensured the report was clear and concise by adhering to IEEE standards. He also designed and simulated the machine components using SolidWorks to analyze their functionality and efficiency. Additionally, he observed and analyzed the mechanical system to identify potential areas for improvement. W.M.P.P.K. Warnasooriya performed detailed calculations for the gear system, chain configuration, and planting mechanism. He ensured that the mechanical design met the required precision and efficiency standards. G.B.E.M.C.K. Wimalasooriya managed the procurement of essential materials and components for the machine. Their individual efforts have been crucial to the success of this project..

[Audio] Future work will involve conducting advanced simulations using SolidWorks to analyze various aspects of our design. We will examine how it performs under different operating conditions, considering factors like stress, motion, and efficiency. This analysis will help us refine our design further, ensuring that it meets the needs of small-scale farmers while keeping costs in mind. We will also finalize the assembly of a fully functional prototype based on this refined design. Additionally, we will assess the overall production cost to guarantee its affordability for these farmers. Finally, we will identify and implement cost-effective materials without compromising the quality of our product..

[Audio] The team worked diligently since October to develop a comprehensive plan for designing and building the machine. They conducted a literature review in November to gather insights from existing methods and studies. The team identified suitable methods and proposed conceptual designs, which were further refined in December. In January, they focused on material selection, conducting design calculations, and developing a solid model using SolidWorks. They also began purchasing necessary items and fabricating the machine. As they move forward, they will conduct machine testing and finalize their report writing..

[Audio] Calculations play a crucial role in the development of bevel gears. The classification of bevel gears defines terms commonly used in this field. To determine the pitch angle for bevel gears, proportions, and strength considerations are explored. Forces acting on a bevel gear are examined, and the design of a shaft for these types of gears is discussed..

[Audio] The references provided highlight various aspects of innovative designs and technologies in agriculture, including the development of manual vegetable transplanters, ergonomic design principles for hand tools, and sustainable agriculture through mechanical innovation. These studies demonstrate the importance of considering factors such as ergonomics, efficiency, and sustainability when designing agricultural equipment..

15. THANK YOU q&a. MAN/20/B1/26 :- G.B.E.M.C.K. Wimalasooriya.