1. KAUTIR (Kerala Agricultural University Theses Information and Retrieval)
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Item Mount strewing machine for Kaipad(Department of Farm Machinery and Power Engineering, Kelappaji College of Agricultural Engineering and Technology, Tavanur, 2024-03-16) Varun Raveendranathan; Jayan, P RIn the traditional Kaipad paddy cultivation method, the process includes creating mounds for planting germinated seeds. These mounds are left in the field for around 45 days, allowing leaching to decrease soil salinity and creating optimal conditions for seed germination. To uphold the biodiversity of the Kaipad ecosystem, the current cultivation technique involves manually spreading seedlings around the mounds using a spade. Challenges in Kaipad cultivation encompass labour shortages, strenuous work for farmers, high production costs, and a dearth of mechanization. In response to the challenges of labour scarcity and high production costs in Kaipad cultivation, a power-operated mound strewing machine has been developed. This machine minimizes the risk involved in the process of seedling dispersal, addressing the labour-intensive nature of the task, and potentially improving efficiency in the cultivation process. The developed strewing machine comprises a prime mover, connecting shaft, gearbox, output connection, main frame, triangular frame, shaft, and blade. This entire unit was fabricated in the research workshop of KCAET, using standard design procedures. To achieve optimal machine efficiency, it is essential to optimize the parameters involved in the strewing operation. The various levels for the three parameters during strewing are rotational speed (25 and 30 rpm), type of blades (Rectangular, Trapezoidal, and Curved) and depths (15 , 20 and 25 cm) respectively. The dependent variables under consideration include field capacity, damage percentage, weight of soil-seedling composite and fuel consumption. The optimal parameters for the strewing process were identified as follows: rotational speed of 25 with a rectangular blade type at a depth of 15 cm. The machine developed was operated by two men labours. It has a weight of 47.2 kg. Performance parameters, including field capacity, fuel consumption, damage percentage, and weight of soil-seedling composite, were determined as 0.019 acre h-1, 42.67 L h-1, 4.3% and 7.37 kg, respectively. The total cost of the machine was Rs. 31,000, and the cost of operation was calculated at Rs. 415.47 per hour. Comparing the operational costs, the conventional method incurs Rs 61,625 per hectare, whereas the developed mound strewing machine operates at Rs 55,396 per hectare.Item Design development of continuous type coconut splitter(Department of Farm Machinery and Power Engineering, Kelappaji College of Agricultural Engineering and Technology, Tavanur, 2022-02-28) Pachangane Alankar Ashok.; Shivaji ,K PCoconut (Cocous nucifera L.) is one of the most prominent commercial crops in tropical and is usually referred as “tree of heaven”. The seed or the fruit of the coconut palm, which is also referred as coconut must be dehusked and split before using for various purposes. Although there are different techniques and tools for splitting or cracking open the mature coconut, there is no suitable machine for continuous splitting of nut with provision for collecting the coconut water hygienically. Development of such machine requires a detailed investigation on the physical and engineering properties of coconut. Splitting energy and splitting force required are certain other vital information necessary for the design. Hence this study was undertaken for investigating the design parameters for the development of a continuous coconut splitting machine. The physical properties of the coconut were determined using standard procedures and the splitting energy requirement was determined using an impact test apparatus. The maximum splitting force was then calculated from the splitting energy. Based on the maximum splitting force and physical properties, the design parameters were evolved, and a machine was designed and developed. The trails of the machine were then conducted to evaluate the performance in comparison with the conventional splitting method. The average major diameter of the coconuts were obtained as 117.24 mm with standard deviation of 9.00 mm. The average minor diameter of the coconuts were recorded as 97.09 mm with standard deviation of 5.57 mm. The average intermediate diameter of the coconuts were found to be 93.29 mm with a standard deviation of 4.59 mm. The average weight of the coconuts were observed as 579.99 g with a standard deviation of 104.56 g. The average roundness of the coconuts were measured and found to be 0.65 95 with a standard deviation of 0.10. The average sphericity of the coconuts was 0.83 with a standard deviation of 0.05. The average volume of the coconuts were 556.20 cm3 with a standard deviation of 64.07 cm3 . The average density was 1.04 g cm-3 with a standard deviation of 0.14 g cm-3 . The maximum splitting energy and force needed to split coconuts were recorded as 35.84 J and 609.25 N respectively. The machine was designed to split coconut by impact force, by making an impact tool hitting the nut positioned in continuously rotating feeder. The impact tool held in position by a tension spring, was actuated by a cam, which in turn receives power from an electric motor of 0.746 kW. Speed reduction gear box, chain and sprockets were used for transmitting the power from motor to the impact tool. Water collecting trough and strainer were fixed beneath the feeder and impact tool. The performance evaluation of continuous type coconut splitter was conducted, and it was found that time require to split the coconut is 5 seconds. The average splitting efficiency of the machine was obtained as 85.51 per cent with a standard deviation of 8.25. The output capacity of the developed machine was 372.4 kg h -1 . The total number of coconuts split per hour was obtained as 720. The efficiency of the machine was obtained as 85.71 per cent. Keywords: Coconut, Splitting energy, Splitting force, Impact tool, splitting efficiency, machine output capacity, efficiency of the machine.Item Development and performance evaluation of a windrower unit for KAU root crop harvester(Department of Farm Machinery and Power engineering, Kelappaji College of Agricultural Engineering and Technology , Tavanur, 2022-03-25) Suraja, A R.; Jayan, P RA tractor-operated root crop harvester was developed by KAU especially for harvesting coleus, turmeric and ginger. The developed machine increased the yield and reduced the losses and damages caused to the tuber/ rhizome when compared to the conventional method of harvesting. However, there was a need for separating the soil adhered to the tuber/ rhizome and windrow the tuber/ rhizome at the rear end of the machine for easy collection. Therefore, in the present study, a windrower unit attachment to the KAU root crop harvester was developed and evaluated the performance of the developed machine for optimizing the operational parameters. The soil and crop properties relevant to the design of the windrower unit were determined. The major components of the developed windrower unit are the mainframe, power transmission system which includes the chain sprocket system and the crank rocker mechanism and the windrower unit with a soil separator. The developed prototype was provided with to and fro as well as vertical oscillatory motion. The overall dimension of the developed unit was 1000 × 900 mm, with a windrowing width of 180 mm. The operational parameters for optimizing the machine were at three levels of amplitude of oscillation (60, 100 and 140 mm), inclination of windrower unit (5, 10 and 15 deg.) and crank rotational speed (220, 270 and 300 rpm). The performance of the machine was determined by considering the parameters including soil separation index, conveying efficiency, damage percentage, power requirement, fuel consumption, field capacity and field efficiency. The soil separation index for coleus was maximum with 83.27 per cent, followed by turmeric and ginger with 78.29 and 77.96 per cent respectively at 100 mm amplitude, 10 deg. inclination and 270 rpm rotational speed. The maximum conveying efficiency for coleus, turmeric and ginger were 92.06, 93.16 and 92.92 per cent respectively obtained at 140 mm amplitude, 10 deg. inclination and 270 rpm rotational speed. The minimum damage percentage of 1.99, 1.51 and 1.30 was obtained at 100 mm amplitude, 10 deg. inclination and 270 rpm rotational speed for 138 coleus, turmeric and ginger respectively. The minimum power requirement for coleus, turmeric and ginger was 2.58, 3.38 and 3.67 kW respectively at 100 mm amplitude of oscillation, 5 deg. inclination and 220 rpm rotational speed. The fuel consumption of 5.34, 5.56 and 5.13 L h-1 was observed for harvesting coleus, turmeric and ginger respectively. The effective field capacity for coleus and ginger was 0.15 ha h-1 with a field efficiency of 0.16 per cent. For turmeric, the field capacity and field efficiency determined were 0.16 ha h-1 and 94.12 per cent respectively. The standardized machine parameters are 100 mm of amplitude of oscillation, 10 deg. of inclination of windrower unit and 270 rpm of crank rotational speed. The fabrication cost of the developed prototype was computed as Rs 20000. The cost of operation per hour and hectare is Rs 996 and Rs 6640 respectively. The total cost of harvesting using harvester including collection and bagging was observed as Rs 28390 per ha. The cost savings for harvesting including collection was 67.37 per cent for coleus and 60.84 per cent for turmeric and ginger. The savings in labour for coleus harvesting was 75 per cent whereas for turmeric and ginger, it was about 70 per cent when compared to the conventional method. About 34 per cent of cost reduction and 30 per cent of labour reduction was observed when the KAU root crop harvester was operated with the developed windrower attachment. The break-even point and payback period of the machine were 67.78 hours per annum and 1.46 years respectivelyItem Design and development of roto seeder cum herbicide applicator for dry seeding of Rice(Department of Farm Machinery and Power Engineering, KCAET, Tavanur, 2021-11-11) Geethu, M.; Dhalin, DDirect dry seeding is the most adopted method for upland rice cultivation in regions where water scarcity is a major issue. Generally, dry seeding includes the operations such as seedbed preparation, broadcasting of seeds followed by thinning in the field. The entire operations are performed independently which in turn increases the availability of time and labour requirements which directly affect the cost of operation. Hence the mechanization in a combined manner to improve the crop yield and reduce the total cost of operation was very essential in the case of DSR. The post planted operations could be mechanized easily only when the planting is uniform and precise which facilitates the reduction in the cost of production. To harvest good yield from dry seeded rice production it was essential to efficiently control the weed growth in lands. The study was hence aimed to design and develop a rotovator attached seed drill with an attachment of a preemergent herbicide application unit. Out of the common seed metering mechanisms, certain advanced technologies of seed metering are adopted for the costly hybrid seeds. Among the different seed metering mechanisms, a fluted roller was selected due to its acceptability in a wide range of variations in the physical properties of seeds. Generally, the fluted rollers were designed and fabricated in nylon to reduce the seed damage with a provision for adjusting the exposure length of the flute. Seven semicircular groves were provided on the periphery with designed dimensions. From the results of laboratory and field evaluations, it could conclude that the machine can be efficiently used for the seeding of high yielding rice varieties with the distribution of 3 to 4 seeds per hill as recommended. Also, the system was able to maintain the row to row and plant to plant seed spacing as 200 mm to 150 mm with allowable variations. From the laboratory analysis of the occurrence of seed spacing with an opto-electronic sensor unit, it was clear that the percentage occurrence of clusters of seeds was observed more perfect at lower speeds with spacing 0 – 2 cm and scattering was observed when speed increases. The developed seeder could perform the operations such as seedbed preparation, sowing, and herbicide application in a single pass.Item Development and ergonomic evaluation of spading machine as an attachment to power tiller(Department of Farm Machinery and Power Engineering, Kelappaji College of Agricultural Engineering and Technology ,Tavanur, 2023-12-19) Chandrashekar; Bini SamTillage is the physical manipulation of soil with tools and equipment to achieve good tilth for enhanced seed generation and subsequent crop growth. A spading machine works as an alternative to the plough for primary tillage. There are limitations in manual spading and tractor operated spading in small and marginal fields. Manual spading needs more labour, takes longer time, more energy and high cost per cultivable area. The depth of cut is also low while using a manual spade. Tractor operated spading machines have their own set of limitations in small fields, and their cost was also out of reach for small and marginal farmers. These factors lead to the development of a spading machine as an attachment to power tiller. A power tiller (6.7 kW) was selected as a prime mover for the spading machine. The developed spading machine consists of gear box, power transmission system, frame, crank shaft, connecting rod, spade and depth gauge wheel. A laboratory model of spading machine was fabricated and tested to finalize the optimum machine parameters for the development of new spading machine. The actual field capacity of power tiller operated spading machine was 0.1132 ha h-1 which is higher than the traditional method (0.008 ha h-1). Overall, the maximum field efficiency 87 per cent was achieved at the forward speed of 2.1 km h- 1, when the depth of cut was 10 cm at 30° spade angle and 200 rpm crankshaft speed. It was observed that the actual field capacity and field efficiency of spading machine increased with increase in forward speed and was higher with trapezoidal shape blade than triangular blade since it covers more area per unit time. The maximum clod mean weight diameter of 15 mm was recorded at a forward speed of 1.5 km h−1 with crankshaft speed 100 rpm. The minimum draft requirement and fuel consumption of spading machine were 820 N and 0.87 l h-1 recorded at a forward speed of 1.5 km h−1 with 10 cm depth of cut. The minimum heart rate of 95 beats min-1 was recorded at 1.5 km h-1 forward speed of power tiller and the maximum heart rate 125 beats min-1 was observed at 2.1 km h-1 forward speed of the power tiller. A significant variation in energy expenditure of spading operation was noticed at 5 per cent level with different forward speeds. Minimum energy expenditure rate of 12.26 kJ min-1 was obtained at 1.5 km h-1 forward speed of the power tiller and the maximum energy expenditure rate 21.82 kJ min-1 was noted at 2.1 km h-1 forward speed respectively. The grade of work was “moderately heavy” for power tiller operated spading machine and ‘heavy” for traditional method. Maximum aerobic capacity of subjects varied from 1.75 to 2.08 l min-1. The mean values of AWL (VO2 Max) for all subjects varied from 40 to 47 per cent indicated that the spading machine could not be operated continuously for 8 hours without frequent rest pauses. The overall discomfort rating was 4.6, 5.1 and 5.7 at 1.5, 1.8 and 2.1 km h-1 respectively and it was scaled as “moderate discomfort”. Overall safety rating was scaled as “moderately secure and less fear”. Overall ease of operation rating was scaled as “Less difficulty” with a score of 4, 4.3 and 4.6 at forward speeds of 1.5, 1.8 and 2.1 km h-1 respectively. It was observed that the, body part discomfort score was maximum for 2.1 km h-1 with a score of 43 followed by 1.8 km h-1 with a score of 33 while it was minimum at 1.5 km h-1 with a score of 25. The rest time for achieve functional effectiveness during the operation of power tiller operated spading machine was found to the 10 min followed by one hour of work. The noise level was recorded for different engine speeds, varied from 86 dB at the operator ear level to 102 dB at the engine top. The vibration level was recorded for different engine speeds, varied from 11 m s-2 at right handle to 37.6 m s-2 at engine top. The cost of prototype of power tiller operated spading machine was worked out as Rs. 50,000/-. The cost of operation per hour and hectare was determined as Rs.335/- and Rs. 3,316/- respectively. The breakeven point, payback period and benefit cost ratio of the machine is 93 h year-1, 3.5 years and 2.1:1 respectively. The saving cost of operation of machine was calculated as Rs. 6,884 ha-1 and 67.5 per cent when compared to conventional method of spading operation.Item Development of robotic black pepper harvesting system(Department of Farm Machinery and Power Engineering, Kelappaji College of Agricultural Engineering and Technology, Tavanur, 2022-07-25) Amsuja V Ajayan.; Sindhu BhaskarBlack pepper is a perennial crop and one of India's most economically significant spices. It has a high commercial value in the market all around the world. Its fruit is harvested, dried, and powdered for many cuisines and processed for many value-added products. Black pepper is a flowering vine growing on supporting stakes. The berries turn from green to red on maturity and are harvested when it starts to turn red. For achieving good quality and good-sized pepper, it should be harvested at its correct maturity stage. Generally, black pepper spikes were harvested manually by climbing on supporting trees using bamboo poles. It is a tedious task because there are chances of falling from ladders while harvesting and also causes some musculoskeletal diseases to the labours. For their time saving and heavy work intensity, farmers harvest almost all the fruits in a range of maturity along with the real matured ones. This practice eventually affects the crop yield and quality. Through robotic harvesting, black pepper spikes can be harvested at correct maturity and also helps to overcome the difficulties faced by the labours. The main functions of robotic harvesting are identification, plucking, depositing, and controlling. KAU developed a machine vision system with the camera as sensor, Raspberry pi 4 model B as the processor, and LCD as the display unit to identify matured black pepper spikes. The programing code was written in python language, and the Tensorflow-faster RCNN platform was used for the detection. Hence, a robotic black pepper harvesting system was developed in the present study, and its performance evaluation was carried out. The physical properties of black pepper relevant to design and develop a robotic black pepper harvesting system were determined. The developed robotic black pepper harvesting system consists of a machine vision system to identify matured black pepper spikes, a manipulator with 2 DOF, an end-effector with 1 DOF, and a control unit. Servo motors actuated the shoulder and elbow joints of the manipulator and the cutting blades. Shear-type cutting was employed for detaching pepper spikes from the pepper vine. The entire system was controlled by the microprocessor Raspberry pi 4 Model B. For controlling the servo motors, the library RPi.GPIO was installed on raspberry pi, and the programming code was 180 written in python language. Two lead-acid batteries with a voltage of 12 V and a current 9Ah were connected in parallel to power the entire system. The overall dimension of the developed unit was 59 × 18 × 162 cm, and it weighs 2.1 kg. The performance evaluation parameters of the machine vision system viz., sensitivity, specificity, and accuracy were respectively as 85 %, 77 %, and 82 % in Karimunda variety and 84 %, 77 %, and 82 % in Panniyur 1 variety. Time taken for detection is 0.43 seconds. Also, the capacity of the developed robotic black pepper harvesting system is 3.5 kg h-1 and 562 spikes h-1 in the Karimunda variety, whereas 4.6 kg h -1 and 683 spikes h -1 in Panniyur 1 variety. The effectiveness index, time taken for the entire operation, harvesting loss, and drying loss was 81%, 6.6 seconds, 4.9 %, and 39 % in the Karimunda variety and 82 %, 6.3 seconds, 7%, and 66 % in Panniyur 1 variety respectively. The system takes 0.18 seconds for a single cut for both varieties; it was fixed in the program. A study was also carried out for manual harvesting and found that manual harvesting has a capacity of 1052 spikes h-1 and 6.3 kg h -1 in the Karimunda variety and 1654 spikes h -1 and 10.8 kg h -1 in the Panniyur 1 variety, which is higher than robotic harvesting. The effectiveness index of the manual harvesting was 40% in Karimunda and 38 % in Panniyur 1, which is lower than robotic harvesting. The harvesting loss and drying loss of manual harvesting are 15.3 % and 56 % in Karimunda and 17.5 % and 81 % in Panniyur 1, which is higher than robotic harvesting. It was statistically verified and found a significant difference between manual and robotic harvesting in terms of capacity, effectiveness index, harvesting loss, and drying loss at a 5 % level of significance.Item Design development of continuous type coconut splitter(Department of Farm Machinery and Power Engineering, Kelappaji College of Agricultural Engineering and Technology,Tavanur, 2022) Pachangane Alankar Ashok; Shivaji, K PCoconut (Cocous nucifera L.) is one of the most prominent commercial crops in tropical and is usually referred as “tree of heaven”. The seed or the fruit of the coconut palm, which is also referred as coconut must be dehusked and split before using for various purposes. Although there are different techniques and tools for splitting or cracking open the mature coconut, there is no suitable machine for continuous splitting of nut with provision for collecting the coconut water hygienically. Development of such machine requires a detailed investigation on the physical and engineering properties of coconut. Splitting energy and splitting force required are certain other vital information necessary for the design. Hence this study was undertaken for investigating the design parameters for the development of a continuous coconut splitting machine. The physical properties of the coconut were determined using standard procedures and the splitting energy requirement was determined using an impact test apparatus. The maximum splitting force was then calculated from the splitting energy. Based on the maximum splitting force and physical properties, the design parameters were evolved, and a machine was designed and developed. The trails of the machine were then conducted to evaluate the performance in comparison with the conventional splitting method. The average major diameter of the coconuts were obtained as 117.24 mm with standard deviation of 9.00 mm. The average minor diameter of the coconuts were recorded as 97.09 mm with standard deviation of 5.57 mm. The average intermediate diameter of the coconuts were found to be 93.29 mm with a standard deviation of 4.59 mm. The average weight of the coconuts were observed as 579.99 g with a standard deviation of 104.56 g. The average roundness of the coconuts were measured and found to be 0.65 95 with a standard deviation of 0.10. The average sphericity of the coconuts was 0.83 with a standard deviation of 0.05. The average volume of the coconuts were 556.20 cm3 with a standard deviation of 64.07 cm3 . The average density was 1.04 g cm-3 with a standard deviation of 0.14 g cm-3 . The maximum splitting energy and force needed to split coconuts were recorded as 35.84 J and 609.25 N respectively. The machine was designed to split coconut by impact force, by making an impact tool hitting the nut positioned in continuously rotating feeder. The impact tool held in position by a tension spring, was actuated by a cam, which in turn receives power from an electric motor of 0.746 kW. Speed reduction gear box, chain and sprockets were used for transmitting the power from motor to the impact tool. Water collecting trough and strainer were fixed beneath the feeder and impact tool. The performance evaluation of continuous type coconut splitter was conducted, and it was found that time require to split the coconut is 5 seconds. The average splitting efficiency of the machine was obtained as 85.51 per cent with a standard deviation of 8.25. The output capacity of the developed machine was 372.4 kg h -1 . The total number of coconuts split per hour was obtained as 720. The efficiency of the machine was obtained as 85.71 per cent. Keywords: Coconut, Splitting energy, Splitting force, Impact tool, splitting efficiency, machine output capacity, efficiency of the machine.Item Development and testing of a tractor operated coconut basin lister cum fertilizer applicator(Department of Farm Machinery and Power Engineering, Kelappaji College of Agricultural Engineering and Technology,Tavanur, 2023) Jinukala Srinivas; Jayan, P RThe basin listing and fertilizer application are important operations for the optimum growth of coconut palms. The conventional methods of basin listing and fertilizer application for coconut palms are labour intensive, drudgery prone, time consuming, accident prone, cost intensive and requires skilled labour. Therefore, a research work was undertaken to develop a tractor operated coconut basin lister cum fertilizer applicator considering soil, crop, fertilizer and machine parameters. The developed machine composed of gear box, power transmission system, main frame, main shaft and its cover, rotor shaft, cutting blades, frame, chain cover, hitch system, hopper, agitator, metering roller, metering housing, delivery pipe and other parts. The lab model of fertilizer applicator was developed and tested to finalize the metering roller type for prototype of fertilizer applicator. The recommended fertilizer application rate of 1.56 kg palm-1 was obtained for edge cell metering roller with lab model of fertilizer applicator. The recommended fertilizer application rate of 1.56 kg palm-1 , highest coefficient of uniformity of 99.2 per cent and desirability of 0.98 was obtained for edge cell metering roller flute volume of 1.43 × 10-5 m3 and ‘L’ shape agitator with lab evaluation of prototype of fertilizer applicator. The desirable depth of cut of 10.0 cm was obtained for forward speed of 2.0 km·h -1 , blade to plate angle of 110 deg. and skid height from ground level of 17.5 cm; minimum time per basin formation was attained for forward speed of 2.5 km h -1 , blade to plate angle of 100 deg. and skid height from ground level of 20.0 cm respectively; higher bund height, lower bund width and lower soil pulverization index was obtained for forward speed of 2.0 km h -1 , blade to plate angle of 110 deg. and skid height from ground level of 17.5 cm respectively with basin lister in the field. By numerical optimization, the optimum parameters of machine are 2.0 km h -1 forward speed, 110 deg. blade to plate angle and 17.5 cm skid height from ground level. The number of basins formed per hour, actual field capacity and fuel consumption of tractor operated basin lister cum fertilizer 186 applicator is 20, 0.15 ha·h -1 and 6.7 l h -1 respectively. The cost of prototype of tractor operated basin lister cum fertilizer applicator is Rs.85,000. The cost of operation of machine for basin listing and fertilizer application operations is found out as Rs.881 h -1 and Rs.5874 ha-1 . The breakeven point, payback period and benefit cost ratio of the machine is 75 hours per annum, 1.60 years and 3.08:1 respectively. The saving in cost of operation of machine is Rs.18,126 ha-1 and 75.50 per cent when compared to conventional method of basin listing and fertilizer application operations.Item Investigations on soil crop and machine parameters towards the development of a root crop harvester(Department of Farm Machinery and Power Engineering, Kelappaji College of Agricultural Engineering and Technology, Tavanur, 2020) Basavaraj; Jayan, P RItem Computer aided analysis of 'sit and stand' type coconut climbers for mechanical stability(Department of Farm Machinery and Power Engineering Kelappaji College of Agricultural Engineering and Technology, Tavanur, 2018) Pooja, V; Jayan, P RCoconuts are harvested by climbing the palm and cutting the nuts down by hand. Manually climbing up and down the palm is hazardous and tedious. Now a days a few models of mechanical coconut palm climbers are available to overcome these drawbacks. Testing the mechanical strength and stability of the coconut palm climbers is necessary to ensure its safe performance under working condition. Among these types, KAU and Farmer’s models were selected and its three dimensional models were generated in Solidworks 13.0 software. The static and fatigue analysis of these selected models were carried out in the ANSYS 15.0 software. The assembly of each component of the top and bottom frames of the models were created and saved in step file format. The file was then imported to the ANSYS 15.0 software for the static and fatigue analysis. Preprocessing steps such as meshing, selection of material and application of boundary conditions were then carried out sequentially to establish static and fatigue problems. In the KAU model top and bottom frames were steel and aluminium materials, wherein the Farmer’s model top and bottom frame were made of structural steel. The boundary conditions imposed are the application of loads and fixing of supports. Various loads of 400, 500, 600, 700, 800, 900 and 1000 N were applied and under each load the analysis was carried out. In the KAU model, the inner face of the bent tube and V tube and in the Farmer’s model, the rope and curve plate were considered as fixed supports. The static analysis interpreted were the equivalent (Von-Mises) stress, equivalent elastic strain and total deformation while fatigue analysis interpreted the fatigue life and factor of safety. The results showed that as the load increased the Von Mises stress was found increased. Also, there were decreasing trends for the factor of safety and fatigue life. The top frame of KAU models have factor of safety more than three, two and one up to 400, 500 and 1000 N load respectively. The infinite fatigue life cycles were observed up to 800 N. The bottom frame of KAU model have factor of safety more than one up to a load of 1000 N and have infinite fatigue life cycles up to 1000 N load. Hence KAU model is safe to operate up to a load of 1000 N. The top and bottom frames of the Farmer’s model also found out the factor of safety more than one and have infinite fatigue life cycles up to load of 1000 N. Hence Farmer’s model is safe to use up to a load of 1000 N. further changes in material, design or dimensions are suggested to get more factor of safety for loads from 700 to 1000 N for both the selected models. As there is no specified test codes available for manually operated mechanical tree climbers, a draft test code with Minimum Performance Standard (MPS) was also prepared under this study.