CONSTRUCTION OF PORTABLE WHEEL-BARROW

(Chemical Engineering)
CONSTRUCTION OF PORTABLE WHEEL-BARROW
ABSTRACT

After detailed study on machines and levers, the construction work started as follows:-
Making out, pattern development, cutting filling, drilling, machining, assembling, welding and finishing.  Detailed procedures carried out are located at the sequence of operation in subsequent pages.
The machine has scale of 1:5 in all parts of its dimensions.  However, brief dimensions are given below:-
Upper surface of bowl                        -                       850mm
Inner surface of bowl              -                       335mm
Stand height                                        -                       325mm
Diameter of wheel                              -                       250mm
Diameter of shaft seating and the shaft          4mm
Thickness of type                                -                       75mm
 The drawing of the project was done and enclosed at the end page of this booklet.  At last, a 150kg capacity of conveying machine was constructed.   
 TABLE OF CONTENTS
CHAPTER ONE
Introduction                                                                
Historical Background            
1.2              Need For Constructing The Machine             
 CHAPTER TWO
Theory/Literature Survey                                            
2.1              Types Of Load To Be Carried By The Conveyor      
2.2              Operation Of The Wheel-Barrow                   
CHAPTER THREE
3.1              Equipments/Tools Employed During              
Construction Of The Wheel-Barrow                                                  
3.2              Materials Of Construction                              
3.3              Construction Procedure                      
3.4              Sequence Of Operation                                  
3.5              Design Calculations                            
3.6              Calculations Basic On The Bowl                                
3.7              Specifications                                      
3.8              Project Drawing                                              
CHAPTER FOUR                                                                                        
COSTING OF PORTABLE WHEEL-BARROW                                               
4.1              Material Cost Analysis                                                
4.2              Labour Cost Analysis                         
CHAPTER FIVE
5.1              Discussion                                                       
5.2              Precautions taken during construction                        
5.3              Cautions to users                                                         
5.4              Recommendations                                          
5.5              Conclusions                                                     
References                                                      
CHAPTER ONE
INTRODUCTION
HISTORICAL BACKGROUND
Few centuries ago, the task of conveying loads around was so cumbersome.  Very minor loads could be carried from one point of the other.  The distances covered during the period of weak was less whereas the time expended on the short covered distance was much.  Also, there were no appreciable accomplishment of words, there were continually loss of man-power as much effort and energy was spent on conveying loads.
Loads were carried on human heads which was generally unsafe.
Consequent upon these limitations, man started devising means on how loads could be carried from one point to another with ease.  Before 13trh century, wheel-barrow was first constructed in china.  The type of wheel-barrow then had its wheel under the cargo box.  This conveyor helped the Chinese then to execute most of their works.  But, yet, smaller quantity barrow due to the weak mechanical strength of material for continuation.
In 13th century proper an improvement on the type of wheel-barrow that were in China was constructed and used in Europe.  This type had its wheel at the front of the machine on like that of the Chinese which had its wheel at the back of the cargo.  These conveyors in those days could only convey less loads and could withstand less stress due to the deficiencies in the strength of the materials used for construction.
But, as time went on, there was and have been improvement and advancement in technology and there is how knowledge on how mechanical strength of construction materials can be improved thus, guaranteeing capability of machines to the function they are intended for.
1.2              NEED FOR CONSTRUCTING THE MACHINE
The need of constructing this machine conveyor, arose as a result of difficulty being encountered daily on carrying of loads from points to points.  By the construction of this conveyor, loss of man-power, money, time and difficulties encountered during load conveying is reduced.
To establish a convincing fact in terms of technological acquired knowledge.
To contribute to technological advancement of the society.
To leave a legacy for the upcoming and prospective Engeers.
                     

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