THE DESIGN AND FABRICATION OF MECHANICAL LAWN MOWER


THE DESIGN AND FABRICATION OF MECHANICAL LAWNMOWER  

ABSTRACT

    Mechanical engineering department of the named institute has many non operational machines sequel to this fact maintenance which resulted to non development and non maintenance of the institute community at large.

    By this fact the project (mechanical lawn mower) was constructed and design to help in the development and maintenance of institution, community and the society at large in the area of grass cutting in our environment and the improvement in our food production and also the reduction of manpower.

    In other words, during the construction and design of this project many things were put into consideration such as our environmental condition, effectiveness of the machine and also maintenance were well observed and a minimized cost of maintenance and a highly successful repair was adopted and also the appropriate tools cost and quality of material were well consider.

TABLE OF CONTENTS

Title page

Letter of transmittal

Release page

Signature page

Approval page

Dedication

Acknowledgement

Abstract

Table of contents

List of symbols

CHAPTER ONE

1.0    introduction

1.    Identification of need

2.    Literature review

3.    Historical background of the project (scope)

4.    Importance of the project no society

5.    Aims and objectives of the project

CHAPTER TWO

2.0    specification of the problem

2.1    scope of specification and condition of use

1.    Characteristic

2.     Performance

3.     Appearance

4.     Reliability and life

5.     Synthesis of solution

6.      Theory and analysis of problems

CHAPTER THREE

3.    Design concept of the lawnmower

3.1    design specification of the lawnmower

1.    Design concept

2.    Detail design of a lawnmower

3.    Design solution

4.    Material selection

5.    Design calculation

6.    Analysis of the problem

CHAPTER FOUR

4.0    mode of construction

1.    Tools/equipment used for the construction of the project

2.    Fabrication techniques/sequence of operation

3.    Assembly of the project

4.    Description of each component

5.    Safety precaution

6.    Result of the operation carried out

CHAPTER FIVE

1.    Estimation of cost

2.    Conclusion of recommendation

3.    References of bibliography

LIST OF SYMBOLS

G    =    Density

d    =    Diameter of the shaft

D    =    Diameter of the blade

W    =    Omega Angular Speed

J    =    Second Moment of inertia

M    =    Mass of the object

T    =    Torque

TI    =    Pie

V    =    Velocity

F    =    Cutting force

P    =    Power

(    =    Shear stress

(    =    Strain

L    =    Length

B    =    Breadth

H    =    Height

CHAPTER ONE

INTRODUCTION

In this pass, cutting of grasses in the school, track or filed, Industries hotel, public centers, Agriculture lands etc. was done by machete or cutlass. This method of manual cutting not only was laborious but also time consuming as it is human effort that is entirely needed both for cutting and motion. There was also inaccuracy in cutting level of the each inaccuracy in cutting level of the each individual as many factors will influence the late, speed h, height of cut of each individual.

Apart from all these cumbersional old method of cutting there is also risk of accident. As one can easily get cut with his or her machete/cutlass. Also there is need for mechanization since the world is going modernization bearing all these problems in mined trying to fine a solution to it, we decided to embark on this project. This project can be used for cutting of grass. And all the problems of the manual cutting was meant to be overcome.

Therefore  this lawn mower is used for cutting grass to equal length ( though you can adjust to level of cut) for speed cutting, it is also lies accident fine as well, it has a reduced labour as it is an on

1 –c engine that does the accurate cutting, While the pusher provides the effort/motion.

Again to encourage farming among the farmers and those that are finding it difficult in handling the cutlass, this project was embarked to help. As it can be used clearing bush. Beside it is also used for cutting sports field (like football pitch) as well as cowns in hotels and business premises. So this project reduces human effort and should be encouraged in schools, hotels business area etc. although mower can be of electric type too. But we decided to fabricate a mechanical. type to overcome the problems of electricity. And as such, this our lawn mower can be used every where even where there is no electricity.

      IDENTIFICATION OF NEED

          Early before now, West Africa as a whole, the present farmer depends on the hoe and cutlass for practically all farm operation. There tools vary in shape and size from place to place. In the high forest zone of Nigeria the small farmers must clear thick bush done either hoe or cutlass for weeding the farmland

These farm operate depends entirely on the energy using the tools which he has at this disposal. This inability that facing the farmer, has triggered these project group to research into the lasting solution to this problems.

Also (mechanical lawn mower) these problems of high payment of local labour can be brought to minimum. The production of their machines in Nigeria and lead to reduction of importation cost from Germany USA of this machine to Nigeria with high profitable to the farmers.

1.2     LITRATURE REVIEW. 

1.3     HISTORICAL BACKGROUND OF THE PROJECT (SCOP)

Based on the development countries, Technology in farm operate is highly increased. It is clear that developments in farm machinery in West Africa started for back 1960. This project must related to the social and ecological conditions prevailing in different parts of this grate region. At the present time two trends are apparent

Increase in use of tractors and large agricultural machinery on farms of large extent both in the high forest and savanna zones, but particularly in the later.

The increase of annual power and small machine on peasant farms, farm operates in west Africa will become increasingly machinated, and that stage of mechanization which lies on the tractor and combine harvester on the other is refereed to as intermediate technology.

IMPORTANCE OF THE PROJECT TO SOCEITY

Generally, this project (mechanical low mower) has a great effect towards development and maintenance of any community in the societies, which one mounted below.

Cutting grass of secondary, primary and tertiary field thereby reducing human effort made. Great portion of farmland can cut or brushed with and of lawn mower in one day. This project reduced number of personal that need in a particular farm operate. Improved food production in the society To reduce manpower To improve economy of any country Provision of foreign Exchange in the countries To reduce exportation cost to our country To encourage pupils, and students to be regular and the school, because no ore cutting of grass with cutlass by pupils or student.

AIM AND OBJECTIVES OF THE PROJECT REDUCTION OF LABOUR COST

In application of lawn mower machines is any government field and farm land causes seriously reduction in number of labour needed in the maintenance of the, brushing and clearing of the grass, but with aid of  

AIM AND OBJECTIVES OF THE PROJECT

In the past several investigation were made in lawn industry At USA, Germany etc exported to Nigerian market, from which this production is a development of already existing ones, it was localized to smite our environment conditions. Aims and objective of the investigation on the project are nominated below. Lown mower machines.  The job is easily performed without mush wasting of time.

1.6.2          IMPROVEMENT OF FOOD PRODUCTION

Local farmers can embarked on maintenance of 100 hectares of farmland with aid of lawn mower machines. This project will extract some lazy, also many people will developed interest and rendering agricultural engineering or course related to farm

1.6.3 TIME FACTOR

This production of this project (lown mower machine) brings reduction in man hour consumed in cutting of grass which is being improved using lawn mower machine which employed some minute of an how for the job.

1.6.4          IMPROVEMET IN ECONOMY

Having farmer embark on large farm land for production of food to the citizen birth, and of lawn mower machine but not land is bound so production supply enough quantities food to market which extract improvement of countries economy and also ensure stability and the exchange.  

Also boosting of employment to the youth of the town.

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THE DESIGN AND FABRICATION OF MECHANICAL LAWN MOWER



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