DESIGN AND FABRICATION OF ELECTRIC
WHEELCHAIR AND MODIFICATION OF SUITABLE
TWO WHEELER FOR PARAPLEGICS
PRASANT P
POST GRADUATE IN PRODUCT DESIGNE & ENGINEER
BANGALORE
INDIA
GOAL - TO “REDUCE” DEPENDENCY OF PARAPLEGIC!!
Paraplegics faces difficulties in his/her
day to day activities
Paraplegics?
A person who cannot move their
lower part of their body
Improving the quality of life of
Paraplegic
CAUSES
Stats of Fully Developed and
Developing country
Developed Country Ex., USA, Centers for Disease Control and
Prevention (CDC), 2004
Prevalence
• Approximately 1.9% of the U.S. population, or some 5,596,000
people, reported some form of paralysis based on the functional
definition used in the survey.
• Approximately 0.4% of the U.S. population or some 1,275,000
people reported being paralyzed due to a spinal cord injury
Causes of Paralysis and Spinal Cord Injury
• The leading cause of paralysis was stroke (29%), followed by
spinal cord injury (23%) and multiple sclerosis (17%).
• Various types of accidents accounted for the great majority of
spinal cord injuries.
Courtesy: www.cdc.gov
Courtesy:
Paralysis and Spinal
Cord Injury in the United
States
Developing Country Ex., India, National Sample Survey
Organisation (NSSO), 2002
• Disabled persons constitute about 2 per cent of the total
population in our country.
Villages Urban
Number of
4637
3354
Atleast one disable
person
45571
24731
Number of disabled
persons
49300
26679
% age of population
8.40%
6.10%
• The number of disabled persons in the country was estimated
to be 18.49 million during July to December, 2002. They
formed about 1.8 per cent of the total population.
• About 10.63 per cent of the disabled persons suffered from
more than one type of disabilities.
• For every 100000 people in India, there were 1755 who were
either mentally or physically disabled. Among the rural
residents, the prevalence of disability was 1.85% and that
among the urban, it was 1.50%. The rate for males was 2.12%
and 1.67% while that for females was 1.56 and 1.31 per cent in
rural and urban India, respectively.
Mental Disability
Visual Disability
Speech Locomotor
Hearing
Multiple
Any
Disability
Disability
Mental
Mental
Low Disability
Disability Disability
Blindness
Only
Only
Retardation Illness
Vision
only
only
only
Only
Rural
2455
3643
4684
1756
5040
2757
23557
5408
49300
Urban
1387
1563
1958
787
2445
1279
14099
3161
26679
All India
3842
5206
6642
2543
7485
4036
37656
8569
75979
Difficulties faced by Paraplegics in their day to
day activities
•
•
•
•
•
Commuting with the home/working place
Bathroom issues
Moving ON and OFF the bed
Automobile accessibility
Shopping, Parking and Dressing
Difficulties faced by Paraplegics in their day to
day activities
• Commuting with the home/working place
• Bathroom issues
• Moving ON and OFF the bed
• Automobile accessibility
• Shopping, Parking and Dressing
PROBLEM!!
WHEELCHAIR
2 WHEELER
ORIGIN OF PROBLEM!!
EXISTING MEANS
SUPER SPLENDOR
http://www.wheelchairindia.com
TVS XL MODELSIDE ATTACHMENT
SUZUKI ACCESS 125
DISCOVER FIX
ATTACHMENT
TRICYCLE
MOPED FIX
ATTACHMENT
OBJECTIVE OF THIS PROJECT
• This project aims at developing a low cost electric wheelchair
which is capable of withstanding the rigors of the road of India and
modifying a two wheeler available in the market so that electric
wheelchair will be an integral part of the two wheeler enabling the
paraplegic person to ride on the road.
• The Project involves making an electric wheelchair which
combines an integral part of a two wheeler so that he can just
attach his wheelchair to the road going vehicle without getting off
of his wheelchair. Thus making him completely independent of any
external help.
• The project will be focused on lowering cost for fabrication
part so that if it is manufactured on a large scale, the overall price
of the entire unit will be low enabling those physically
handicapped people who are cash strapped to purchase the unit .

Concept 1
Concept 2

Concept 3
Concept 4
Concept 4b

Concept 4a
Concept 4c
Concept 4d
(FINAL
SHORTLISTED
CONCEPT)
~3’
~2’
#
PART NAME
WEIGHT
IN KG.
1
Side Tube
3.398
2
142
2
Collar pivot
0.684
2
28
3
Bushing for collar
0.088
4
8
4
Cross member -1
2.928
2
123
5
U-Tube
2.308
1
97
6
U-Tube extension
0.486
2
21
7
Upper pivot for rear shock absorber
1.096
4
46
8
Seat frame angle piece
0.478
2
20
9
Controller frame flat piece
0.14
4
6
10
Arm rest flat piece
1.492
2
63
11
Tubing from front wheel fork
0.486
2
20
12
Seat pivot for back rest
0.016
2
1
13
Stop for back rest
0.069
1
3
QUANTITY COST IN RS.
14
Back rest lower plate
0.482
1
20
15
Rectangular tube for guide
2.521
1
106
16
Bushing for lock
0.708
4
30
17
Lateral square tube for guide
0.323
1
14
18
Rear lock
0.5
1
40
19
Battery frame
3.352
2
140
20
Battery farm support rod
0.2
2
10
21
Upper plate of back rest
3.2
1
135
22
Back rest lower plate
1.5
1
63
23
Swing arm
4.292
2
900
24
Swing arm pivot bolt rod
0.196
2
8
25
Swing arm pivot nut
0.016
2
4
26
Front fork
3.55
2
450
27
Shock absorber for front wheel
2.24
4
1210
28
Front smaller wheel
5.2
2
250
29
Shock absorber for rear wheel
3.52
4
1060
30
Rear electric powered wheel
20
2
11000
31
Controller frame flat piece
0.54
2
1100
32
Three way changeover switch
2.2
2
540
33
Dry cell batteries
30
6
6600
34
Accelerator with brake lever system
0.5
1
500
35
8 mts. Of wiring
1
1
1000
36
Brake drum
1
2
500
37
Sliding bracket(back)
1
2
50
38
Sliding fixed plate-1
3
2
250
39
Sliding fixed plate-2
8
4
336
40
Sliding inner plate
1.2
2
50
41
Screw rod for sliding
1.3
2
300
42
Handle for sliding mechanism
0.5
2
75
43
Top bracket for sliding mechanism
0.3
2
28
44
Sliding bracket(front)
1
2
50
TOTAL
27397
SCOPE FOR FUTURE WORK
• Better interface with the controller as the existing system was just
an adaptation from an electric cycle kit. Use of joystick with
micro-controller controlled movement of the wheelchair will
greatly enhance the driving pleasures.
• Use of alloy rims instead of spoke rims there by reducing the
chances of wheel bends.
• Sliding mechanism for front wheels can be made hydraulic for
ease of use
• The wheelchair can be made suitable for adaptation to all two
wheelers in the market.
EXISTING PROBLEMS
• Footrest portion
• Time to assemble with 2 wheeler
• Universal Design!!!!!!!
• Expand the adaptability to 4 wheeler