ERGONOMIC ASSESSMENT OF MANUALLY OPERATED ROTARY MAIZE SHELLER.

dc.contributor.advisorThakare, Dr. S. K.
dc.contributor.authorGEDAM, KANCHAN VASANTRAO.
dc.date.accessioned2020-08-05T18:29:25Z
dc.date.available2020-08-05T18:29:25Z
dc.date.issued2019-10-11
dc.descriptionThe present study deals with the development of user-friendly and safe mechanism of pedal operated for existing maize sheller for reducing drudgery and minimum seed damage. Therefore, the ergonomic study of maize shelling was felt very necessary. The present research work was carried out with the main objective so as to increase the human-machine system efficiency and also improve the operator’s health and able to operated with great efficiency, accuracy and safety. So, in view to focuses on energy considerations which arise from the physiological and psychophysical responses studied considering pedal length, seat height, backrest height with three different levels on modified pedal mechanism.en_US
dc.description.abstractMaize or corn (Zea mays L.) is a plant belonging to the family of grasses (Poaceae) which is most important cereal crop after wheat and rice produced throughout the country. From the carry out survey of existing practices of maize shelling, observed that the procedure of shelling maize is very difficult, and maize shelling efficiency is very low, these problems are solved by hand operated rotary maize sheller. Its work output depends on the machine as well as on the operator. So, for overcoming these problems develop user-friendly and safe mechanism of pedal operated for existing maize sheller with reduced drudgery and minimum seed damage. Therefore, the ergonomic study of maize shelling was felt very necessary. The present research work was carried out with the main objective so as to increase the human-machine system efficiency and also improve the operator’s health and able to operated with great efficiency, accuracy and safety. So, in view to focuses on energy considerations which arise from the physiological and psychophysical responses studied considering pedal length, seat height, backrest height with three different levels on modified pedal mechanism. The interpretation of the results of the study leads to the following major conclusions. Physiological and psychophysical responses were affected by pedal mechanism and minimum values were observed with pedal length 180 mm, sitting height 710 mm and backrest height 400 mm, respectively. The lowest working heart rate, increase in heart rate and oxygen consumption rate were observed to be 101.67 beats min -1, 27.5 beats min -1 and 0.34 lit min-1, respectively whereas body-part discomfort score, overall discomfort score and percentage of maximum oxygen consumption rate were found to be 7, 2.88 and 19.62 %, respectively. However cardiac cost of operation and energy expenditure rate was found to be 9.5 beats kg-1 and 8.81kJ min-1, respectively and highest output capacity i.e. 220 kg h-1 was obtained at same combination. So, working heart rate in existing maize sheller in “very heavy” and in modified maize sheller categorized in “moderately heavy”. It may be concluded that the pedal mechanism can be successfully used as an interface between the human worker and a hand rotary type machine for getting more output from the machine with less effort and fatigue as compare to existing maize sheller.en_US
dc.identifier.citationGedam, Kanchan Vasantrao. (2019). Ergonomic assessment of manually operated rotary maize sheller. Department of farm power and machinery (Agricultural Engineering), Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola. Ph.D. 2019. Print. xxii, 287p. (Unpublished).en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/5810150421
dc.keywordsFemale heart rate, Female Ergonomics, Female fatigue, Female psychophysical responses,en_US
dc.language.isoenen_US
dc.pagesxxii, 287p.en_US
dc.publisherDr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra.en_US
dc.research.problemIn the present research the researcher tried to to study an anthropometric characteristic of female agricultural workers with reference to the design of manually operated rotary maize sheller and ergonomical performance of existing hand operated rotary maize sheller And also tried to study to develop pedal operated mechanism for the existing maize sheller and ergonomical evaluation of maize sheller with newly developed pedal operated mechanism was done.en_US
dc.subFarm, Machinery and Poweren_US
dc.subjectnullen_US
dc.themeThe mechanical device to thresh the maize is not suitably available in the country so far, so the attempt has been made to overcome the drudgery in the operation of shelling maize crop. Pedal operared mechanism for maize shelling proves to be emerging technology to farmers as it has been designed with considering ergonomical as well as anthropometric parameters. Newly developed mechanism specially helpful to women farmers in terms of more efficiency and comfort in operation to reduce drudgery and health problem also.en_US
dc.these.typePh.Den_US
dc.titleERGONOMIC ASSESSMENT OF MANUALLY OPERATED ROTARY MAIZE SHELLER.en_US
dc.typeThesisen_US
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