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TitleDynamo Street Lamps
TagsTypes Presentations
File Size729.1 KB
Total Pages43
Table of Contents
                            Prof. Dr. K. R. SENTHIL KUMAR, M.E, Ph.D. Mr.D.Jayabalan, M.E.,
2.FREEWHEEL
	2.2Advantages and disadvantages
	2.3Uses
		2.3.1Engine starters
		2.3.2Bicycles
		2.3.3Helicopters
	2.4History
3.BALL BEARING
	3.1History
	3.2Common designs
		3.2.1Angular contact
		3.2.2Axial
		3.2.3Deep-groove
		3.3Lubrication
	3.4Applications
4.FLYWHEEL
	4.1Applications
	4.2History
	4.3Physics
	Table of energy storage traits
		4.4Rimmed
5.SPROKET
	5.1Transportation[edit]
	5.2Tracked vehicles[edit]
	5.3Film and paper[edit]
6.CHAIN DRIVE
	6.1History
	6.2Chains versus belts[edit]
	6.3Use in vehicles
		6.3.1Bicycles
		6.3.2Automobiles
			6.3.2.1Transmitting power to the wheels
7.COIL SPRING
	7.1Variants
Torsion springs, designed to resist twisting actions. Often associated to clothes pegs or up-and-over garage doors.
8.DYNAMO
	8.1Description
		8.2Commutation
		8.3Excitation
	8.4Modern uses
9.WELDING
	9.1Processes
		9.1.1Arc
			9.1.2Power supplies
			9.2Processes
10.TURNING
	10.1Turning operations
                        
Document Text Contents
Page 1

ANNA UNIVERSITY : CHENNAI 600 025

BONAFIDE CERTIFICATE

Certified that this project report “Alternate transmission
system” is the bonafide work of “ Rohith Kumar.M (111711114123),
Rajkiran.V (111711114117),Sasidaran.K (111711114129), Sathya
Lenin.E.A.R.C (111711114130)” carried out the project word under my

supervision.

SIGNATURE SIGNATURE

Prof. Dr. K. R. SENTHIL KUMAR, M.E, Ph.D. Mr.D.Jayabalan, M.E.,

HEAD OF THE DEPARTMENT SUPERVISOR

Department of Mechanical Engg, Department of Mechanical Engg,
R.M.K. Engineering College, R.M.K. Engineering College,
Kavaraipettai, Chennai-601206. Kavaraipettai, Chennai-601206.

Submitted for the project viva voce held on ……………. at R.M.K.
Engineering College, Kavaraipettai, Chennai-601 206.

INTERNAL EXAMINER EXTERNAL EXAMINER

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Page 2

ACKNOWLEDGEMENT

We would express our gratitude to our beloved chairman
SHRI R. S. MUNIRATHINAM, R.M.K. Engineering College,
Kavaraipettai, Chennai – 601206 for having arranged to do this
project.

We express our sincere thanks to our beloved guide
Mr.D.Jayabalan, M.E., (PhD), for his valuable guidance and
encouragement for finishing the project successfully.

We would also like to express our sincere thanks to our
beloved Principal Dr. ELWIN CHANDRA MONIE and Head
of the Department Prof. Dr. K. R. SENTHIL KUMAR, for
having made for guidance and counseling throughout this
project work.

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Page 21

Regenerative
braking in trains

0.5 3000 50 8,000 33.0 9.1

Electric power
backup[7]

0.5 600 50 30,000 92.0 26.0

4.4Rimmed

A rimmed flywheel has a rim, a hub, and spokes. The structure of a rimmed flywheel is

complex and, consequently, it may be difficult to compute its exact moment of inertia ] A

rimmed flywheel can be more easily analysed by applying various simplifications. For

example:

 Assume the spokes, shaft and hub have zero moments of inertia, and the
flywheel's moment of inertia is from the rim alone.

 The lumped moments of inertia of spokes, hub and shaft may be estimated as a
percentage of the flywheel's moment of inertia, with the remainder from the rim, so

that

For example, if the moments of inertia of hub, spokes and shaft are deemed negligible,

and the rim's thickness is very small compared to its mean radius ( ), the radius of

rotation of the rim is equal to its mean radius and thus:



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http://en.wikipedia.org/wiki/Flywheel#cite_note-7

Page 22

5.SPROKET

16 tooth sprocket. Do = Sprocket diameter. Dp = Pitch diameter

A sprocket and roller chain

A sprocket or sprocket-wheel is a profiled wheel with teeth, cogs, or even

sprockets that mesh with a chain,track or other perforated or indented material. The

name "sprocket" applies generally to any wheel upon which are radial projections that

engage a chain passing over it. It is distinguished from a gear in that sprockets are

never meshed together directly, and differs from a pulley in that sprockets have teeth

and pulleys are smooth.

Sprockets are used in bicycles, motorcycles, cars, tracked vehicles, and

other machinery either to transmit rotary motion between two shafts where gears are

unsuitable or to impart linear motion to a track, tape etc. Perhaps the most common

form of sprocket may be found in the bicycle, in which the pedal shaft carries a large

sprocket-wheel, which drives a chain, which, in turn, drives a small sprocket on the axle

of the rear wheel. Early automobiles were also largely driven by sprocket and chain

mechanism, a practice largely copied from bicycles.

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http://en.wikipedia.org/wiki/Machine
http://en.wikipedia.org/wiki/Continuous_track
http://en.wikipedia.org/wiki/Automobile
http://en.wikipedia.org/wiki/Motorcycle
http://en.wikipedia.org/wiki/Bicycle
http://en.wikipedia.org/wiki/Pulley
http://en.wikipedia.org/wiki/Gear
http://en.wikipedia.org/wiki/Caterpillar_track
http://en.wikipedia.org/wiki/Roller_chain
http://en.wikipedia.org/wiki/Wheel
http://en.wikipedia.org/wiki/Roller_chain

Page 42

11.DESIGN AND FABRICATION

 First solid shaft is taken and turned in the lathe shop to reduce the
diameter and length according to the components which are present.

 The steel plates are taken and they are made as case by welding,the
welding used in this work is “arc welding”.

 The Rack is fitted on the top such that it mates with freewheel to rotate
in positive direction.

 The sprocket is fitted outside the casing.
 The sprocket is connected with the small sprocket which is attached

with the dynamo.

12.WORKING

The working part of the “Dynamo street lamps”includes,

The Rack which is welded with the iron plate is also welded with
the compression coil(helical)spring.The Rack is positioned in such a way to mate the freewheel
that makes the freewheel to rotate in positive direction.The ball bearings are used for positioning
the shaft .The casing are done between the bearings using wooden plates.The wooden plate are
punched in centre using carpentary tools.The order of components in shafts are BALL
BEARING1,FREE WHEEL1,FREE WHEEL2,FLY WHEEL,BALL BEARING2,LARGE
SPROKET.The large sproket comes outside the casing.It is connected with the small sproket by
the chaindrive.It is fitted in the speed brakers of the road.When a vehicle moves on the speed
breakers,the rack is moved downwards and makes the freewheel to rotate in positive
direction,again the rack comes to the original position using the spring action.Due to this the
shaft continuously rotate.The large sproket is mated with the small sproket whivh tends the
dynamo also to rotate to generate power.

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Page 43

13.ADVANTAGES AND DISADVANTAGES

ADVANTAGES

DISADVANTAGES

14.SPECIFICATION AND CALCULATION

SPECIFICATION

CALCULATION

15.COST ANALYSIS

16.CONCLUSION

Thus the design and fabrication of the” Dynamo street lamps“ is done.

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