Post on 02-Jun-2018
transcript
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WASH CLOTHES BY
USING BICYCLEPOWERED WASHING
MACHINE
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hypothesis
1. When a big gear (driver) meshesto a small gear (follower), it
produces more speed for the
washing machine.
2. When a big gear (driver) meshes
to a small gear (follower), it needsmore force to cycle.
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Material used
Old bicycle unused washing machine iron rods rollers
toolkits Bolt and nuts woods screws
Welding machine different size of gear hand drill PVC pipe
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Procedures
Step 1
Modify the washing machine
1. Remove the outer metal shell, usually white in colour,
from the washing machine by unscrewing every bolt onthe machine.
2. Take out the electric motor from the washing machine
frame.3. Remove the pulley from the motor shaft.
4. Take off the drain hose that connects the tub to the
pump.
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5. Make a stand to hold the washing machine with wood.
As shown in the picture below,
Making a stand for the washing machine
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6. Tie the washing machine to the wood with iron string.
7. Screw the each part of the wood stand with bold and nut.
( Do not use nail because it is not that strong to hold a
heavy load).
8. Then connect two different size of gears with horizontal
and vertical under the washing machine.
9. Weld the gears to the washing machine.
10. We also fixed rollers under the washing machine
stand.
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Step 2
Modify the bicycle1. Remove the second (bicycle) rim and a tyre from the
bicycle.
2. Connect the back gear of bicycle with the horizontal
gear of washing machine.3. Use an iron rod to connect both the gears.
4. Weld both the ends.
(Make sure both the gears and the iron rod rotates
together when the bicycle tyre is rotating.)5. Fix a stand for the iron rod.
6. When the bicycle gear rotates, the horizontal gear and
vertical gear under the washing machine will rotate
together.
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Step 3
Make the bicycle stable1. Fix a stand at the middle of the bicycle. (To
make the bicycle stable)
2. The outlet fixed must be connected to the breakof the bicycle.
3. Make sure all the parts are connected well.
4. When cycling all the gears will rotate. This will
enable the motor of the washing machine torotate.
5. Test the bicycle powered washing machine.
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Aim
TO FIND OUT WHICHCOMBINATION OF GEARS
THAT INCREASES SPEEDAND FORCE FOR THE
WASHING MACHINE.
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hypothesis
Combination of big gear(driver) and small gear
(follower) in the bicycleincrease the speed and
force in the washingmachine.
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Variables
What to change :Combination of gears
What to observe :
1. Rotating speed of washing machine
2. Force is determine by the number of
heartbeats (min)
Kept the same : Mass of clothes
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Experiment procedures
1. Put some of clothes and pour some water in thewashing machine with little amount of detergents.2. Cycle for few minutes or until the cloths are
completely washed.3. Press the break to discharge the water.4. Again pour some water in the washing machine
and cycle for a few minutes.5. Press the break to discharge the water.6. Repeat step 1 to 5 with different size of gears.
7. Find out which combination of gears gives morespeed and force.
8. Record the observation.
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results
Combination of
gears
Speed of rotation
(washingmachine)
Small (driver)
with small(follower)
less
Medium
(driver) withsmall
moderate
Big (driver) withsmall
fast
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Combinati
on ofgears
Force is determine by the number of
heartbeats (min)
Avik Bala Lesh Suwet kesh Average
Small(driver)with small(follower)
86 82 87 81 83 84
Medium
(driver)with small
89 85 90 83 87 87
Big (driver)with small
92 89 93 89 90 91
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Combination of gears with number of heartbeats
Number of heartbeats
Combination of gears
80
82
84
86
88
90
92
Small with
small
Medium with
small
Big with
small
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conc lus ion
A big gear (driver) mesh to asmall gear (follower), produce
more speed. This will enable to
increase the rotating speed ofthe washing machine.
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aim
To find out the
effects of gears onspeed, direction
and force.
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hypothes is
When the driver gear turn clockwisethe follower will turn anticlockwise.
Combination of big gear (driver) andsmall (follower) increase the speed inthe model.
Combination of big gear (driver) andsmall gear (follower) increase theforce needed.
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Safety precautions
1. Using gloves when handling materialsuch as gears, wood and toolkits.
2. Keep sharp objects such as gears,
cutters, player and screw driver in a
safety container.
3. Always have a safety box when
handling an experiment.
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Introduction
A gear is rotating machine part having cut teeth or cogs, which match with
another toothed part in order to transmit force. Geared devices can change the
speed, force, direction of a power source. By understanding more about, design
an experiment by using various numbers of teeth in a gear and explain its
principle.In transmissions which offer multiple gear ratios, such as bicycles and
cars, the term gear, as in first gear, refers to a gear ratio rather than an actual
physical gear. The term is used to describe similar devices even when the gear
ratio iscontinuousrather thandiscrete, or when the device does not actually
contain any gears, as in acontinuously variable transmission.
http://en.wiktionary.org/wiki/continuoushttp://en.wiktionary.org/wiki/discretehttp://en.wikipedia.org/wiki/Continuously_variable_transmissionhttp://en.wikipedia.org/wiki/Continuously_variable_transmissionhttp://en.wikipedia.org/wiki/Continuously_variable_transmissionhttp://en.wiktionary.org/wiki/discretehttp://en.wiktionary.org/wiki/continuous8/11/2019 Booth Setup for Karnival Inovasi
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What do gears do... and how do they do i t?
Gears are used for transmitting power from one part of a machine
to another. In a bicycle, for example, it's gears (with the help of a
chain) that take power from the pedals to the back wheel.
Similarly, in a car, gears transmit power from the crankshaft(the
rotating axle that takes power from the engine) to the driveshaftrunning under the car that ultimately powers the wheels.
http://www.explainthatstuff.com/cranks-and-cams.htmlhttp://www.explainthatstuff.com/carengines.htmlhttp://www.explainthatstuff.com/carengines.htmlhttp://www.explainthatstuff.com/cranks-and-cams.html8/11/2019 Booth Setup for Karnival Inovasi
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Four different ways to use gears
Gears for speedIn this simple gearbox, I've got (from right to left) a large gearwheel with 40 teeth, a medium wheel with 20 teeth, and a smallwheel with 10 teeth. When I turn the large wheel round once, themedium wheel has to turn twice to keep up. Similarly, when the
medium wheel turns once, the small wheel has to turn twice tokeep up. So, when I turn the large gear wheel on the right, thesmall wheel on the left turns four times faster but with one quarteras much turning force. This gearbox is designed for increasingspeed.
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Gears for force
If I power the same gearbox in the opposite direction, byturning the small wheel, I'll make the large wheel spin aquarter as fast but with four times as much force. That'suseful if I need to make a heavy truck go up a hill, forexample.
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Worm gears
Here an electric motor (the gray box on the right) and along screw-like gear to drive a large gear wheel. Thisarrangement is called a worm gear. It reduces the speedof the motor to make the large wheel turn with moreforce, but it's also useful for changing the direction of
rotation in gear-driven machinery.
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Rack and pinion gearsIn a rack and pinion gear, a slowly spinning gear wheel (the pinion)
meshes with a flat ridged bar (the rack). If the rack is fixed in place,the gear wheel is forced to move along it (as in a railroad). If thegear is fixed, the pinion shifts instead. That's what happens in carsteering: you turn the steering wheel (connected to a pinion) and itmakes a rack shift from side to side to swivel the car's front wheels
to the left or the right. In simple weighing scales, when you load aweight on the pan at the top, it pushes a rack straight downward,causing a pinion to rotate. The pinion is attached to a pointer thatrotates as well, showing the weight on the dial.
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Why we choose a bicycle poweredwashing machine as an innovation?
From the findings we decided to do a bicycle powered washing machine. This
is because a washing machine can cost hundreds and even thousands of dollars a
year to run depending on your type of washing machine, whether or not you use
hot, warm, or cold water, your energy companys prices, watercompanys prices,
and the number of loads you run per week. So, how about a bike pedal-powered
washing machine? Currently, there are many different designs and ideas for pedal
powered washing machines. The goals differ, but they include reducing energy
and water consumption and costs, and increasing accessibility for people who
cannot afford and/or do not have the energy capacity to own conventionally
powered washing machines. By now you are probably wondering how you can
manage to get your hands on a pedal powered washing machine... Unfortunately,
at this time there are no pedal powered washing machines available for mass
production and thus for purchase by consumers.
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ADDITIONAL INFO
If a gear gives you more force, it must give you lessspeed at the same time. If it gives more speed, it has
to give you less force. That's why, when you're going
up the hill in a low gear, you have to pedal much
faster to go the same distance. When you're going
along a straight road, gears give you more speed but
they reduce the force you're producing with the
pedals in the same proportion.
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Factors affecting the experiments results.
1. It will be hard to get a result, if two gears do notmesh together.
2. The speed can only be achieved according to theratio of the gears.
3. It is difficult to find out the ratio of gears which
produce more speed and power.
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Advantages of us ing our b icyc le powered wash ing machine
1. Our bicycle powered washing clothes not only helps in
washing clothes, but contribute in our health because
cycling is a form of exercise for our body.
2. The energy released from our body while cycling is not
wasted because it is used in washing clothes.3. This bicycle-powered washing machine is environment
friendly because we save electricity and water.
4. This bicycle powered washing machine is a reusableconcept because it makes use of old and worn out
bicycle and washing machine.
5. Saves time when compared to washing clothes without
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a machine
6. Cheaper than an electric washing machine and
portable.7. Unlike an electric washing machine, it is not dependent
on electricity - if electrical supply fails, the washing can
still be done quickly.
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Disadvantages of us ing our b icyc le powered wash ing machine.
1. To conduct the bicycle powered
washing machine needs more timeallocation.
2. People with physical disabilities cannotdo this bicycle powered washingmachine.
3. Pregnant woman or elderly people withillness cannot perform such activity.
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