Multipurpose Agricultural Robot.pptx

Group Members :- Tushar Sahebrao Patil Vivek Rajesh Lonkar Jayesh Dilipsing Rajput Prasad Bhagwan Patil

Guide :-

Mr. K.M. Chhajed

RMD Sinhgad School of Engineering, Warje, Pune

Introduction Today’s era is marching towards the rapid growth of all sectors including the agricultural sector. II. To meet the future food demands, the farmers have to implement the new techniques which will not affect the soil texture but will increase the overall crop production. This work deals with the various sowing methods used in India for seed sowing and fertilizer placement. III. The comparison between the traditional sowing method and the new proposed machine which can perform a number of simultaneous operations and has number of advantages. I.

IV. The labor availability becomes the great concern for the farmers and labor cost is more, this machine reduces the efforts and total cost of sowing the seeds and fertilizer placement. V. The basic objective of sowing operation is to put the seed and fertilizer in rows at desired depth and spacing, cover the seeds with soil and provide proper compaction over the seed. VI. The recommended row to row spacing, seed rate, seed to seed spacing and depth of seed placement vary from crop to crop and for different agricultural and climatic conditions to achieve optimum yields and an efficient sowing machine should attempt to fulfill these requirements.

Problem Statement Farmers have to face too many problems during the work, at the time of ploughing, digging, seed sowing the seeds as well as cutting the grass. Also farmers have to pay too much amount of money for this type of work because all having individual equipment for the work. Robots do all the work in minimum time and also in minimum cost because all the four equipment were held in only one single robot. It also reduces the human effort and increase the human safety.

Objectives 1. The main objective of this project is to design and fabricate smart seed sowing machine which can automatically sow seeds in the field based on variable pitch which is given as input by the farmers using the keypad present on the machine. 2. Make this smart machine economical and user friendly for Indian farmers to operate. 3. To implement functionality of adding the number of seeds to be sowed using keypad. 4. Selection of design consideration on the basis of land and crop analysis.

5. Design and selection of various components of robot. 6. Development of Seeding, Ploughing and Grass cutting mechanism

Methodology 1. 2. 3. 4. 5. 6. 7. 8.

Project Idea Generation Literature Survey Decide Objective & Project Work Detailed Study of project Selection Of Component Fabrication Assembly Testing

Mechanical Components 1. 2. 3. 4. 5. 6. 7. 8. 9.

Grass cutter Pesticide Sprayer Sheet Metal Hopper Sheet Metal Plate Solar Panel DC Motor Battery Controller Chassis

Design Calculations Design of Shaft: For a main shaft which is a power generator, power is given as, P=FxV----------------------------------- (1) Our whole assembly will have weight approximately equal to 50 kilograms.Thus total force acting will be on 4 wheels. Out of those 4 wheels we have maximum load acting on rear wheels mounted on shaft. This shaft is subjected to approximately 50 kilograms of load. So force acting on shaft is given by, F=

mxg------------------------------------------ (2)

Putting m=50kg

g =9.81 m/s2 Thus F =50 × 9.81 = 490.5 N Velocity is found out to be 10 cm/s i.e. V = 0.10 m/s Thus Power, P =490.5x0.10 =49.05 watts We know that torque is given as, T =Px60/ (2πn) Assuming No. of Revolution, n=50rpm Thus, we have Torque, T =49.05x60/ (2πx25) =9.36 x 10N-mm For a given shaft we have from diagram, Vertical reactions at wheels i.e. fixed supports, RA = RB = (5+40+5) / 2 = 25 kg = 25x9.81 = 245.25 N From bending moment diagram, maximum bending moment is found to be M = 1750 Kg-mm = 17.167x103 N-mm The resultant moment on a given shaft is given as MR= ((M^2) + (T^2))^1/2 = ((17.167x103)2+ (9.36 x 103)2)½ = 19.552x103N-mm

Also we know that shaft diameter is given as, d = [(MRx16)/ (πxτ)]1/3

According to table for heavy loaded short shafts carrying no axial load shear stress, Consider Shear Stress , τ = 50Mpa d = [((19.552x103) x16)/ (πx50)]1/3 d = 12.581 mm This is ideal diameter of shaft which is needed. Since a shaft may be subjected to extra load as it has to work in rough conditions and from availability point of view, we chose a safe diameter from DDHB (Table 3.5a) of standard shaft diameter of 15 mm. Thus diameter of shaft, d = 15 mm

Design of Bearing ISI NO

Bearing Basic Design Number

20ACO 6202 2

P = X Fr+ YFa Where , P= Equivalent dynamic Load (N) X0=Radial load constant Fr=Radial load (N) Y0=Axial load Constant Fa=Axial load (N)

d (mm)

D (mm)

B (mm)

15

35

11

C

7800

Co

3550

In Our Case, Fr= 140 N And Fa=0 P = X Fr+Y Fa P = 1 *140 P= 140N Considering 4000 working hours Here , L=(C/P)^n n = No of revolutions per min L= length in meter h = depth in meter L10=(60*n*L10h)/(10^6) L10=240 million revolution L10=(C/P)^n 240=( C/140)^3 C= 870N Hence, As required dynamic capacity of bearing is less than the rated dynamic capacity of bearing C < 7800 N Bearing Is Safe

• Design of solar panel : Assume that there are no losses in the charging process and the sun continues to shine, Storage capacity of battery = 12 * 200 * 3600 = 86400000 joule Time taken to charge the battery = = 86400000/300 =28800 sec

• Calculation of Motor : Relation between torque, shear stress and diameter of shaft is given as,

T = (P * 60)/(2*𝞹*N) =(18*60)/(2*𝞹*30) T =5.729 N-m2 Put in above equation, 5729 * 16 = 42 * 𝞹 * d^3 d^3=694.7 d=8.85mm d=9mm

Expected Outcomes

Block Diagram

1. Above diagram shows the overview assembly of our whole robot. It confirms the locations of different application on the chassis. 2. The grass cutter mechanism is in the front of the chassis and the ploughing mechanism is as back end of the chassis. 3. The Seed sowing mechanism is near the ploughing mechanism but it is on the chassis and the sprinkler mechanism is near the grass cutter mechanism on the chassis. 4. The Solar panel and the battery are mounted in between the Seed Sowing. 5. This assembly is made as per the maintaining the C.G. of whole robot and aesthetically looking good.

Time Plan Months/ Activity

A B C D E F G H I

J

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Jan

Feb

Mar

Apr

May

Activities • • • • • • • • • •

A= Topic finalization B= Literature Review C= Formulation of Problem D= Parametric analysis E=Development of CAD models of system F= Purchasing of components G= Manufacturing H= Assembly and Testing I= Results and Conclusion J= Report Writing

References

[1] Lars Grimstad & Pal John, “A modular & reconfigurable Agricultural Robot”, IFAC paper (2017) Page No. 4588-4593. [2] Amol B. Rohokale, Pavan D. Shewale, Sumit B.Pokharkar, Keshav K. Sanap, “A Review On MultiSeed Sowing Machine”, International Journal of Mechanical Engineering & Technology (2014). [3] Prof. K.V. Fale , Bhure Amit P , Mangnale Shivkumar, Pandharkar Suraj R , “Autonomous Farming Robot With Plant Health Indication”, International Journal of Advanced Technology in Engineering & Science (2015). [4] Satish Kumar K N, Sudeep C S, “Robots for Precision Agriculture”, 13th National Conference on Mechanism & Machines (2017).

[5] Nithin P.V, Shivaprakash, “Multipurpose Agricultural robot”,International Journal of Engineering research. pp :1129-1254 (2016)

Thank You !