OF THE EMPLOYER: Lala Lajpat Rai Institute of
Engineering and Technology, Moga (commonly known as LLRIET) is in the
city Moga of
the Indian state of Punjab.
The institute was set up in 1998, under the supervision of Shiva Educational Trust. It
started functioning with the session 1998-1999 after approval from the Punjab government
and All India Council for Technical Education (AICTE), New Delhi. The campus is extremely clean and green. It has state-of-the-art
classroom and labs. LLRIET has a centrally air conditioned and well stocked
C.E.1.2.2 OBJECTIVE OF THE PROJECT: The objective of
this project was to design such type of lawn mower which is affordable,
compact, light weight, easily operate able. Also it is not expensive and every
one can afford it. It should be environment friendly. The main focus was to design
the mowers mainly for the long lawns and quite easy to use and can be bought
without spending a fortune While designing it was to be aimed that it does not
produce any type of pollution like sound or air.
C.E.1.2.3 JOB RESPONSIBILITIES: My job responsibility
in this project was pertaining to the following activities:
select the parts and components for the proposed mower
evaluate methodology of the project
know the concept behind bicycles’ mechanism
design a lawn mower which is affordable,
compact, light weight, easily operate able.
• To select the material of construction for principal
constituents of Bicycle
•To formulate the methodology for the project
• To conduct a market survey to find out an appropriate bicycle for my design
• To implement the basic push
C.E.1.2.4 ORGANIZATION CHART: The organization chart
apropos this project is appended below:
ENGINEERING ACTIVITIES: –
C.E.1.3.1 I at first tried to find out the positive
side of our proposed design for lawn mower, and found out that everybody like a
clean and well mowed grass in home, hotel, parks, gardens etc. but we all know
that it is not an easy job for busy persons. As it was a study cum experimental
project, I emphasized more on to know the concept behind bicycles’ mechanism as
this was the pivoted item in my designed lawn mower driven by a bicycle.
C.E.1.3.2 So, I picked that point and try to solve the
problem of high cost, expensive source of energy, bulky shape and complicated
design. I decided to design such a mower which can eliminate these main
problems and my focus was made in this problem to solve this lacuna.
C.E.1.3.3 In my project, I designed such type of lawn
mower which is affordable, compact, light weight, easily operate able. I
applied my professionalism to design the mower which should not be expensive
one and every one can afford it.
C.E.1.3.4 I was more ethical when designing this lawn
mower so that it is environment friendly and I could established my zeal
towards ethical responsibility and it was proved when my design was made such
that it is operated by man power which is free of cost.
C.E.1.3.5 My design was mainly for the long lawns. I
established that If someone compares it with same type of another manpowered
lawnmower then everyone can know that my design is quite easy to use and can be
bought without spending a fortune. It does not produce any type of pollution
like sound or air because no engine is used in my designed lawn mower.
C.E.1.3.6 I then took-up in my hand the activities towards
designing of my proposed lawn mower. Firstly, I selected the parts and
components that I would be using for mower as first step for design solution. I
decided to use the following parts and components in my designed mower:
& Gears set of modified sizes
of different lengths & thickness
Bolts of different sizes
C.E.1.3.7 I used flexible links in construction of my lawnmower
so as to connect the bicycle and the lawn mower in such a way that it does not
slip or bounces at uneven surfaces. I collected the link from different sources
like, Junkyard Shops, Hardware
Stores and an old Bicycle from a Friend.
C.E.1.3.8 I then selected the material of construction
for principal constituents of Bicycle having Chassis of steel as stated below:
Steel Blades of the lawnmower
Iron Chassis of Lawnmower
C.E.1.3.9 I then formulated the methodology keeping in
view that not everybody wants to walk behind
their lawn mower, and some people have lawns large enough that they need
something with more power and larger cutting areas. A manual reel mower is
suitable for just about anyone who lives on a half acre lot or smaller.
C.E.1.3.10 So, keeping in my mind the above mentioned
issues, I planned to make a reel mowers which is easy to use, require just
about zero maintenance, don’t need gas or electricity but must work with the
help of non conventional energy, so that it is environmental friendly as it
does not produces any kind of pollution which can be air, noise, etc.
C.E.1.3.11 I proved through my design criteria that it
requires less amount of physical force as gears are involved and force is given
out by our legs than our hands. It is really cheap practically as no maintenance
is required and no fuel or power is used as well.
C.E.1.3.12 In my designed lawn mower, the time used in
mowing the lawns is also reduced by a large amount as I used the combination of
man and machine power rather than only man power in simple lawnmowers. Even
large areas can be mowed by my so designed mower which are really tough to mow
by a simple lawnmower.
C.E.1.3.13 So, I came up with the idea of making a
lawnmower which satisfied most of our needs and then I came up with ‘The
Compact Mechanical lawnmower’.
C.E.1.3.14 I procured a cylinder mower carries a fixed,
horizontal cutting blade at the desired height of cut. The configuration I
searched for like this that over this is a fast-spinning reel of blades which
force the grass past the cutting bar. Each blade in the blade cylinder forms a
helix around the reel axis, and the set of spinning blades describes a cylinder
C.E.1.3.15 I then referred to different technical journal
to know more about the function ability
of all the mowers, and evaluated that a properly adjusted cylinder mower makes
the cleanest cut of the grass, and this allows the grass to heal more quickly.
The cutting action is often likened to that of scissors; however, it is not
necessary for the blades of the spinning cylinder to contact the horizontal
cutting bar. If the gap between the blades is less than the thickness of the
grass, a clean cut can still can be made.
C.E.1.3.16 I then made a market survey and found that there
are many variants of the cylinder mower. Push mowers (illustrated) have no
motor and are used on small lawns. As the mower is pushed along, the wheels
drive gears which rapidly spin the reel. I then conducted a mathematical
analysis to find out the acceptable cutting width and worked out that typical
cutting widths are 12 to 20 inches (510 mm).
C.E.1.3.17 I also implemented here the basic push mower
mechanism that is in gangs towed behind a tractor. The individual mowers are
arranged in a vie behind the tractor with each mower’s track slightly
overlapping that of the mower in front of it. Gang mowers are used over large areas
of turf such as sports fields or parks.
C.E.1.3.18 To make the mower more friendly, I recommended
a gasoline engine or electric motor can be added to a reel mower to power the
reel, the wheels, or both. A typical arrangement for residential lawns has the
motor spinning the reel while the operator pushes the mower along.
C.E.1.3.19 I followed the mechanism of Greens (roller)
mowers in my design which are used for the precision cutting of golf greens. In
my design the reel is followed by a large roller which smooth’s the freshly cut
lawn and minimizes wheel marks..
my theoretical knowledge I could evaluate that a human traveling on a bicycle
at low to medium speeds of around 10–15 mph (15–25 km/h) uses only
the energy required to walk. Air drag, which is proportional to the square of
speed, requires dramatically higher power outputs as speeds increase..
C.E.1.3.21 I then tried to understand the configuration
of bicycles and observed that the great majority of today’s bicycles have a
frame with upright seating which looks much like the first chain-driven bike.
Such upright bicycles almost always feature the diamond frame, a truss consisting of two triangles: the front
triangle and the rear triangle.
C.E.1.3.22 I thoroughly then studied and observed that the
front triangle consists of the head tube, top tube, down tube and seat tube I then studied the mechanism of a bicycle chain and came to know that it
is a roller chain that transfers power from the pedals to the drive-wheel of a
bicycle, thus propelling it. Bicycle chains used with a single chaining and
single rear sprocket are conventional industrial bushing chain
C.E.1.3.23 I on analysis established that a bicycle chain
can be very efficient: one study reported efficiencies as high as 98.6%. My
study performed in a clean laboratory
environment, found that efficiency was not greatly affected by the state of
C.E.1.3.24 I observed a bicycle gear, or gear ratio,
or speed refers to the rate at
which the rider’s legs turn compared to the rate at which the wheels turn. Bicycle
gearing refers to
how the gear ratio is set or changed. On some bicycles, there is only one gear
so the ratio is fixed.
C.E.1.3.25 I could achieve the transmission efficiency of
fixed-gear track racing bikes of over 99% (nearly all the energy put in at the
pedals ends up at the wheel). Biomechanical factors however determine that a human can deliver
maximum power only over a narrow range of crank rotational speed or cadence. To match the
power source with the load under varying conditions, I calculated a variable
gear ratio and observed they work were working very well, though at the expense
of mechanical efficiency. The efficiency varied considerably with the gear
ratio being used.
C.E.1.3.26 I proved through my this experimental project
that since cyclists’ legs are most efficient over a narrow range of pedaling
speeds (cadence), a variable gear ratio helps a cyclist to maintain an optimum
pedaling speed while covering varied terrain
C.E.1.3.27 Alternatively, I established that in a lower
gear every turn of the pedals leads to fewer rotations of the rear wheel. This allows the energy required
to move the same distance to be distributed over more pedal turns, reducing
fatigue when riding uphill, with a heavy load, or against strong winds.
I utilized my theoretical knowledge in establishing the above facts.
C.E.1.3.28 I required the following Facilities in my
project to manufacture the cycle driven lawn mower as per my design
Iron Scrap (Junkyard)
C.E.1.3.29 I learnt from this project true meaning professionalism
when I was advised by my project guide
that project must be completed well in time in spite of any eventualities and
constrain and I should handle all the events with a professional outlook.
C.E.1.3.30 My communication skill was commendable while
interacted with my supervisor and team members .I was always very precise and
transparent while communicating with all concern .I established my views with
strong communication in the group
C.E.1.3.31 I always adhered to my ethical conduct and in this course I always tried my best not to skip away in
alarming situation and led my team from the front .I never compromised with any
un-ethical activities of any of my team members .
C.E.1.3.32 I proved
about my innovative excellent
skill in this project while designing a
lawn mower using a bicycle where lot of innovation was essential as our project
was purely an innovative project where I had to culture my innovative skill in
most of the cases.
C.E.1.3.33 I led my team from the front as team lead and
never ignore my responsibility in team management .I always very much
cooperative and positive with my team members .I was always rational in dealing with them and
managed my team with god governance.
C.E.1.4.1 I through my project established that the
Compact Lawn mower is very effective for types of fields having large area,
which are really difficult to mow by a simple reel mower. This mower can
work without use of electric power, so it is really helpful in places which
have electricity problems. No engine or any kind of fuel is used in this mower,
so it is very environmental friendly as it causes no kind of pollution and it
is easy to build and a few basic things are need in its construction, so it is
not so complicated as compared to its other competitors. No extra or
hidden cost is required as it does not use any type of fuel or electricity. As
well its parts are not so expensive and easily available.