Concept Design of a Portable Carrot Seeder

A concept design of a carrot seeder, filed for patent application, was successfully developed in this study. Farmers were visited and interviewed and the data regarding their existing practices in planting carrots, corresponding tools and equipment and planting requirements such as hill spacing, row spacing and plant bed size were gathered. These data were used as input in the preparation and simulation of the seeder design with the aid of Solidworks software. The seeder consisted of seed metering assembly, frame, ground wheels, skid, handle, power transmission, furrow opener and seed covering mechanism. It has 5 metering discs and the spacing between rows is adjustable. The metering disc is provided with grooves on its periphery of size that can accommodate 2 to 5 carrot seeds. Draft force to push the device in usage is 10 kg-force. The designed overall weight is 12 kg.

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Task based conceptual design of a testing machine

MATEC Web of Conferences ◽

10.1051/matecconf/201928701008 ◽

2019 ◽

Vol 287 ◽

pp. 01008

Author(s):

Hrayr Darbinyan

Keyword(s):

Conceptual Design ◽

Power Transmission ◽

Mechanical Design ◽

Design Method ◽

Testing Machine ◽

General Concept ◽

Test Machine ◽

Concept Design ◽

Original Design ◽

Design Cycle

A novel approach of task based conceptual design(TBCD) has been successfully used as direct guider and efficient developer of unique mechanical structures for many cases of mechanical design. Nearly a decade long efforts of elaboration of efficient every day usage formats for this method have been ended in convenient design pages suitable and applicable for revealing, describing, visualizing and managing the data necessary for organizing the design process from task definition to solutions satisfying original design tasks. The aim of current study is to show steps of a solution generation within frames of a single design cycle and extend this action over consecutive design cycles. Those steps are described from standpoint of general concept design method starting from key model and finished with final aggregation matrice as ultimate step of a single design cycle. Unified mathematical expressions are used for introduction and description of all worked out and developed components of conceptual design. The paper is arranged in a way to show gradual steps of conceptual design(CD) of a power transmission system – a pipe wrench life test machine.

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Development of a Tractor Drawn Turmeric Planter

Asian Journal of Agriculture and Food Sciences ◽

10.24203/ajafs.v8i4.6286 ◽

2020 ◽

Vol 8 (4) ◽

Author(s):

A. Gbabo ◽

C. P. Muogbo ◽

Ibrahim M. Gana

Keyword(s):

Power Transmission ◽

Operating Time ◽

Field Capacity ◽

Transmission Mechanism ◽

Performance Tests ◽

University Of Technology ◽

Human Energy ◽

Furrow Opener ◽

Method Of Planting ◽

Machine Speed

Planting of turmeric has been a challenge to the farmers in Nigeria due to the absence of planting machine. The farmers are left to the traditional method of planting with hoes and cutlasses. This method is time consuming, labour intensive, associated with human drudgery and a high demand for human energy. As a result, a mechanical planter was designed and fabricated. The main objective of the study is to develop and evaluate the performance of a tractor- drawn turmeric planter. The planter was designed, fabricated and tested in the Agricultural and Bioresources Department of The Federal University of Technology, Minna. It consists of a ground drive wheel, hopper, metering system furrow opener, residue cutting edge, furrow closing device press wheel and power transmission mechanism. The performance tests of the fabricated machine were carried out using three levels of turmeric rhizome lengths (30 mm, 45 mm and 60 mm) at three levels of operational speeds (8km/h 10km/h and 12km/h). The results revealed that there was no steady pattern in the increase or decrease of miss index with increase in turmeric rhizome length and machine operational speed. The highest percentage turmeric rhizome miss index of 35% was recorded for turmeric rhizome length of 30cm at machine operational speed of 10km/h whereas the lowest percentage turmeric rhizome miss index of 15% was obtained for turmeric rhizome length of 60cm at the machine operational speed of 12km/h. The machine operational speed and size of the turmeric rhizomes affect the field capacity of the machine. The highest capacity of 0.96ha/h was recorded at the highest operational speed of 12km/h. The lowest field capacity of 0.63ha/h was recorded at the lowest machine speed of 8km/h. The developed machine could reduce drudgery involved in manual turmeric planting and save about substantial amount of labour and operating time.

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Design and development of shovel type-spring steel furrow opener for cultivator mounted seed metering mechanism

BIBECHANA ◽

10.3126/bibechana.v15i0.18455 ◽

2017 ◽

Vol 15 ◽

pp. 79-84

Author(s):

Ajay Verma ◽

Ankitesh Shrivastava

Keyword(s):

Power Transmission ◽

Energy Requirement ◽

Field Capacity ◽

Effective Field ◽

Spring Steel ◽

Chain Drive ◽

Agricultural Engineering ◽

Furrow Opener ◽

Field Efficiency ◽

The Cost

The cultivator mounted seed metering mechanism consists of cultivator frame, tines, seed box, seed tubes, metering mechanism, power transmission unit, furrow opener and hitching attachments. The drawings of the developed machine were generated using CAD software and the machine was fabricated in the workshop of Faculty of Agricultural Engineering, IGAU, Raipur. Power was transmitted from ground wheel through sprocket-chain drive to the main shaft. At the average working speed of 3.8 km/h of tractor drawn cultivator, depth of operation was found 129 mm, average weed efficiency was found 76.42 %,effective field capacity was found 0.826 ha/h with field efficiency of 87.40 %. The cost of operation and energy requirement of cultivator was found to be Rs 387 per ha and 241 MJ/ha. The Energy requirement for cultivator-cum-seed drill was found to be 454.18 MJ/ha.BIBECHANA 15 (2018) 79-84

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WITRICITY (WIRELESS ELECTRICITY)

Sutet ◽

10.33322/sutet.v7i1.170 ◽

2018 ◽

Vol 7 (1) ◽

pp. 14-18

Author(s):

Redaksi Tim Jurnal

Keyword(s):

Power Transmission ◽

Wireless Power Transfer ◽

Cost Effective ◽

Early 20Th Century ◽

Concept Design ◽

Power Transfer ◽

Wireless Power ◽

Practical Result ◽

Nikola Tesla ◽

Induction Technique

Electricity is an integral part of every human being and power transmission by wires is a necessityto fulfill the need of electricity. ‘What if we can come out of this tangled wire-theory?’- With this view, Nikola Tesla introduced the concept of wireless power transfer in early 20th century. Wireless Power Transfer (WPT) is not only reliable and efficient but it is also eco-friendly and cost effective. A lot of concepts for WPT are already discussed by researchers, scientists and inventors. In addition to the available works and principles, this paper explains the basic concept, design and implementation of wireless electricity with magnetic induction technique and determining its practical result carried out with the same.

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Stereo imaging in the shadow electron microscope

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100107745 ◽

1978 ◽

Vol 36 (1) ◽

pp. 120-121

Author(s):

W. C. T. Dowell

Keyword(s):

Electron Microscopy ◽

Electron Microscope ◽

Convenient Method ◽

Patent Application ◽

Standard Technique ◽

Stereo Imaging ◽

Stereo Images ◽

Specimen Height

Stereo imaging is not new to electron microscopy. Von Ardenne, who first published transmission pairs nearly forty hears ago, himself refers to a patent application by Ruska in 1934. In the early days of the electron microscope von Ardenne employed a pair of magnetic lenses to view untilted specimens but soon opted for the now standard technique of tilting the specimen with respect to the beam.In the shadow electron microscope stereo images can, of course, be obtained by tilting the specimen between micrographs. This obvious method suffers from the disadvantage that the magnification is very sensitive to small changes in specimen height which accompany tilting in the less sophisticated stages and it is also time consuming. A more convenient method is provided by horizontally displacing the specimen between micrographs. The specimen is not tilted and the technique is both simple and rapid, stereo pairs being obtained in less than thirty seconds.

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