Please use this identifier to cite or link to this item:
|Advisor:||Aware, V. V|
|Title:||ERGONOMIC EVALUATION AND REFINEMENT OF MANUALLY OPERATED PADDY TRANSPLANTER FOR WOMEN WORKERS OF KONKAN REGION|
|Keywords:||Farm Machinery and Power Engineering|
|Abstract:||ABSTRACT ERGONOMIC EVALUATION AND REFINEMENT OF MANUALLY OPERATED PADDY TRANSPLANTER FOR WOMEN WORKERS OF KONKAN REGION. By Kavitkar Chhaya Ragho College of Agricultural Engineering and Technology, Dr. Balasaheb Sawant Konkan Krishi Vidyapeeth, Dapoli-415 712, Dist. Ratnagiri, (Maharashtra) 2016. Research Guide: Dr. V. V. Aware Department: Farm Machinery and Power India is predominantly an agricultural country with rice as one of main food crop. (Anonymous, 2015). India has largest area under rice (43.90 million ha) with the production of about 106.50 million tones. Rice is a staple food of Konkan region of Maharashtra. The Konkan has 0.38 million ha land under cultivation with the productivity of 1.08 million tones and productivity is 2560 kg/ha (Anonymous, 2015). Rice is generally grown by transplanting seedling in flooded field conditions or direct sowing depending upon the availability of water. Industrialization has released millions of agricultural workers in the industrial sectors, which reduced level of manpower and increases the burdens on the worker. Traditional rice transplanting is tedious and very time consuming job requiring about 250 to 300 man-hour/ha, which is roughly 25 % of the overall labour requirement for cultivation of paddy crop. (Das, 2012). In present era of mechanization, paddy transplanters are being used in some pockets of our country. Power operated transplanters are not suitable as such considering the undulating topography, fragmentation of land, transportation issues, economic constraints of the farmers etc. Paddy transplanting is performed predominantly by women workers. Considering the role of women workers in paddy transplanting it was necessary to have the women friendly paddy transplanter for reducing the work stress and increasing the work speed. The nursery age was optimized for the paddy transplanter. The 21 (DAS) nursery found suitable to the manual paddy transplanter. The assessment of physiological cost and drudgery involved in the traditional paddy transplanting was carried out with eight male and seven female subjects. Similarly, the physiological cost and drudgery involved in transplanting with existing manual paddy transplanter 128 was carried out with eight male workers. The mean age, weight and stature of male and female workers were 30.7 (±7.34) years, 63 (±9.07) kg, and 167.5 (±8.24) cm; and 29 (±8.18) years, 56.8 (±7.61) kg and158.8 (±6.44) cm, respectively. The mean working heart rate (WHR), energy expenditure rate (EER), work pulse (ΔHR), overall discomfort rating (ODR) and body part discomfort score (BPDS) for male workers during transplanting with traditional method were 105.9 (±4.01) bpm, 18.09 (±2.98) kJ/min, 27.56 (±3.43) bpm, 6.75 and 24.71, respectively, Similarly those parameters were 106.97 (±3.39) bpm, 8.28 (±0.5) kJ/min, 24.23 (±5.55) bpm, 8 and 30.25, respectively, for women workers. The physiological parameters and subjective discomfort score viz; The mean working heart rate (WHR), energy expenditure rate (EER), work pulse (ΔHR), overall discomfort rating (ODR) and body part discomfort score (BPDS) for male workers during paddy transplanter using existing manual paddy transplanter were 128.44 (±12.38) bpm, 27.13 (±5.16) kJ/min, 37.81 (±8.44) bpm, 6 and 17.06, respectively. It was observed that, the energy grade of work for operation with existing manual paddy transplanter was “heavy” also the working heart rate as mentioned above was 128.44 (±12.38) bpm ; it was not possible for women worker to use the existing manual paddy transplanter as it was. Hence ergonomic and mechanical design improvements were incorporated and existing manual paddy transplanter was refined. The weight of manual paddy transplanter was reduced from 18 kg to 14.6 kg. The handle height, handle length, handle grip diameter, crank length were modified on the basis of anthropometric data of women workers. The refinements were incorporated in different components and mechanisms viz; main frame, seedling holding and pushing mechanism, seedling tray, seedling picking mechanism, float etc. so as to make its operation smooth. The refined manual paddy transplanter was ergonomically evaluated with seven female workers. The various physiological parameters, as mean working heart rate (WHR), energy expenditure rate (EER), work pulse (ΔHR), were 118.06 (±2.18) bpm, 10.03 (±0.36) kJ/min, and 35.80 (±3.96) bpm, respectively. The mean overall discomfort rating (ODR), and body part discomfort score were 5 and 15.53, respectively. The energy grade of work was “Moderately heavy”. Comparing the physiological parameters of subjects measured in case of existing manual paddy transplanter and refined manual paddy transplanter ; it was 129 revealed that, the working heart rate (WHR) reduced by 10% and energy expenditure rate was reduced by 17 % . The energy grade of work was in the “heavy” category in case of existing manual paddy transplanter and that for male workers, which was shifted to “Moderately heavy” for refined manual paddy transplanter for female workers. The field capacity for traditional method of paddy transplanting for male and female workers were 0.0040 ha/h (40m2) and 0.0038 ha/h (38m2), respectively. The field capacity and field efficiency of transplanting for male workers using existing manual paddy transplanter were 0.020 ha/h (200 m2/h) and 47.7 %, respectively, those for female workers using refined manual paddy transplanter were 0.030 ha/h (300 m2/h) and 60.4%. The cost of refined manual paddy transplanter was 2183.31 including material cost and fabrication cost. The operating cost of refined manual transplanter was found to be 69.66 /hr and 2368.44 /ha, whereas cost of transplanting by traditional method of transplanting was 7920/ha. Hence there was 70% saving in transplanting expenditure by the use of refined manual paddy transplanter (hand cranking). Keywords: manual paddy transplanter, working heart rate, energy expenditure rate, overall discomfort score, body part discomfort score.|
|Appears in Collections:||Thesis|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.