DESIGN AND FABRICATION OF WALKABLE PUSHBIKE
1Assistant Professor, Dept. of Mechanical Engineering, Sanketika Vidya Parishad Engineering College, Visakhapatnam, AndhraPradesh, INDIA 2345Bachelor of Technology, Dept. of Mechanical Engineering, Sanketika Vidya Parishad Engineering College, Visakhapatnam, AndhraPradesh, INDIA ***
Abstract - Thedesignandfabricationofatreadmillbicycle involvescreatingahybridexercisemachinethatcombinesthe benefits of both a treadmill and a bicycle. The device allows users to walk or run on a motorized treadmill while also pedalingabicycle,providingafull-bodyworkoutthattargets multiple muscle groups. The design process involves incorporating safety features, such as automatic shut-off mechanisms, to ensure the user's safety. The fabrication process involves using durable materials and innovative designtechniquestocreateastableandcomfortablemachine. The resulting product offers an alternative to traditional stationary bikes and treadmills, providing users with a dynamic and challenging workout that simulates outdoor running and cycling.
Key Words: Bearings,Rollers,Gears,Shaft,Belt,selection& designingofwalkablepushbike.
2 2. WORKING PRINCIPLE
1.INTRODUCTION
AWalkablepushbike,alsoknownasa"treadmillbike," isauniquepieceofexerciseequipmentthatcombinesthe featuresofatreadmillandabicycle.Itconsistsofatreadmill belt, similar to those found on a traditional treadmill, mounted on a lightweight frame with two wheels and handlebars. The user stands on the belt and uses the handlebarstosteerandmaintainbalancewhilewalkingor runningonthebelt.
Theconceptofatreadmillbicycleoriginatedasawayto provideanoutdoorrunningexperiencewhileindoors,and has gained popularity as a fun and efficient way to get a cardioworkout.Thedesignallowsforalow-impactexercise that is easy on the joints, making it a suitable option for people of all ages and fitness levels. The treadmill bike is also portable, making it ideal for outdoor activities and events, such as marathons and triathlons. Overall, the treadmillbicycleprovidesauniqueandengagingexercise experiencethatcombinesthebenefitsofwalkingorrunning withtheaddedexcitementofcycling.
The fabrication of the treadmill traveler is very advantageous because of itssimple construction and easy working principle. To say in a one line, this machinefollowstheactionoftheuser.Thatis,when thedriverwalksforward,themachinemovesforward and when he walks backward, the machine moves backward. A treadmill setup is made so that the operatorcanwalkonthebelt.Ahandleisplacedinthe front for the controlling of the vehicle. The rollers abovewhichtheconveyorbelt(treadmillbelt),heldin tension are coupled to the wheels of the machine, usually rear wheels. The rollers are connected by a suitablearrangement,Oneadvantageofusingrollersis that they can reduce friction between surfaces in contact,whichcanleadtolowerenergylossesduring motion transmission. This can help to improve the efficiencyoftheoverallsystemandreducetheamount ofenergyrequiredtoachievethedesiredmotion.The frameofthemachineisdesignedinsuchawaythatitis balanced and the operator doesn’t put any effort in balancingthemachine.Nowwhentheoperatorwalks forward, the conveyor belt moves in one direction which makes the wheels of the machine to rotate so that the machine moves front. When he walks
backwards,themotiondirectionofthebeltisreversed andthusthevehiclemovesbackwards.
2.1 DESIGN
Plate.2.2. ConveyorBelt
2. Frame: Itisthehorizontalsectionofthevehiclethat connectsothercomponentsofthestructuretogether. This frame makes it possible to transfer power from the drive unit to the wheels. And it’s function is to maintaintheshapeofthepushbikesothatitremains rigidanddoesnotdeformwhenused.Thepartsofthe frameareweldedtogetherusingarcweldingprocess. Thematerialsusedinframearemildsteelbars.
Plate.2.1 Overalldesignofwalkablepushbike
2.2 List Of Parts
1. ConveyorBelt
2. Frame
3. Wheels
4. SetOfGears
5. Bearings
6. Rollers
7. Handle
8. ChainSprocket
9. Chain
10. Brakes
11. Stand
12. Basket
1. Conveyor Belt: Theconveyorbeltisthepartofthe walkable pushbike and it is the carrying medium for thissystem.Aconveyorbeltisacommonapplicationof rollers connected by a suitable arrangement for efficienttransmissionofmotion.Aconveyorbeltisa continuousloopofmaterialthatmovesfromoneendto the other, usually used for transporting goods or materials from one location to another. It is used to provideasurfaceforwalkingorrunningonaconveyor belt,allowingyoutoexerciseindoorsregardlessofthe weather or time of day. The dimensions of belt is 44 inch*15.5inch.Itismadeupoffibrematerial.
PLATE.2.3. FRAME
3 Wheels: Wheelsareanothercommonapplicationof rollers connected by a suitable arrangement for efficienttransmissionofmotion.Awheelisacircular objectthatrotatesaroundanaxle,andistypicallyused for transportation or for providing mechanical advantageinvariousapplications.
4 Set Of Gears: Asetofgearsisanotherexampleof rollers connected by a suitable arrangement for efficient transmission of motion. Gears are circular discs with teeth around the edges, which mesh with othergearstotransmitmotionandpower.
Plate.2.5 SetOfGears
5 Bearings: Bearingsareatypeofrollerconnectedby a suitable arrangement for efficient transmission of motion, which are specifically designed to reduce friction and facilitate motion between two moving parts.Bearingstypicallyconsistofaninnerandouter ring,whichareseparatedbyrollingelements,suchas ballsorrollers.
Plate.2.8 Handle
8 Chain Sprocket: A chain sprocket is another example of rollers connected by a suitable arrangementforefficienttransmissionofmotion.A chainsprocketisatoothedwheelthatmesheswith a chain to transmit motion and power between rotatingshafts.
Bearings
6 Rollers: The6301typebearings(outsidediameter 37mm and inside diameter 12mm) are used in the rollers.Eachrollerismadeupofmildsteel andeach rollerisspecifiedaslength19inch.Thepipeusedin rollersis1.25inchM.Spipes.TheendsoftheM.Spipes are welded with rollers. so, that the rollers can be easilyrotates.
Sprocket
9 Chain: Achainisaseriesofinterconnectedlinks that are designed to transmit motion and power between rotating shafts. Chains can be made of various materials, such as metal, plastic, or even wood,andcanvaryinsizeandshapedependingon thespecificapplication.
Plate.2.7 Rolllers
7 Handle: Acyclehandle,alsoknownasahandlebar,is another example of rollers connected by a suitable arrangement for efficient transmission of motion. The handlebarisahorizontalbarthatismountedonthetop ofaframeandisusedtosteerthevehicle.
Plate.2.10 Chain
10 Brakes: Brakes are a mechanical or hydraulic systemthatisusedtoslowdownorstopamoving vehicleormachine.Brakesworkbyconvertingthe kinetic energy of the moving object into heat energy,whichisdissipatedthroughfriction.
11 Stand: Astandisamechanicaldeviceusedtosupport anobjectormachineinastationaryposition.Standscan be designed to support various types of objects, from smallhouseholditemstolargeindustrialmachines.
Bothmachinescanbeoptimizedforefficiencybytaking variousdesignconsiderationsintoaccount,suchastheuse ofhigh-qualitymaterials,precisealignmentandadjustment ofthemechanicalcomponents,andappropriatelubrication andmaintenance.Byimprovingefficiency,thesemachines can provide users with a more comfortable and effective workout experience while minimizing energy losses and maximizingperformance.
ACKNOWLEDGEMENT
Authors, thank the Dept. of Mechanical Engineering, Sanketika Vidya Parishad Engineering College, Visakhapatnam, Andhra Pradesh, INDIA. for providing necessarysupportinconductingtheexperiment.
12. Basket: Thebasketisplacedinabovethefrontwheel andbelowthehandleandIthelpsincarryingsmallthingson bikeduringyourridewithhassleandriskfree.
REFERENCES
1. V.R.Gandhewar1priyankah.Kakade2himani.S. Lonkar3 a review paper on concept and utility of treadmill123Dept.ofMechanicalEngineering,JDIET, Yavatmal,(India)
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3. InternationalJournalonResearchInnovationsin Engineering Science and Technology (IJRIEST) Volume2,Issue5,May-2017
4. International Journal ofEngineering Scienceand Computing,April2017
5. Tofari,Paulj.BlakeD.Mclean,JustinKemp,and StuartCormack.“ASelf-pacedIntermittentProtocolOn ANon-MotorizedTreadmill:ARelaibleAlternativeTo AssessingTeamSportRunningPerformance”.Journal ofsportscienceandmedicine1stser.14(2015):62-68
4. CONCLUSIONS
Inconclusion,boththetreadmillandbicycleareexcellent examples of machines that utilize various mechanical componentstoefficientlytransmitmotionandenergy.The treadmill consists of a conveyor belt and rollers that are connected by a set of gears and powered by a motor to simulatewalkingorrunning.Thebicycle,ontheotherhand, utilizes wheels, chain sprockets, a chain, and pedals to efficientlytransmitmotionandpowerbetweentheriderand thewheels.
6. Dr.RavikiranKisanMD,Dr.SwapnaliRavikiran Kisan MD, Dr. Anita OR MD & Dr.Chandrakala SPMD “Treadmill and Bicycle Ergometer Exercise: CardiovascularResponsecomparison”GlobalJournal OfMedicalResearch,vol.12,pp.23-26,June2012
7. Chetan Mahadik, Sumit Mahindrakar and Prof.JayashreeDeka“ AnImproved&
8. Prof. V. Sekar and Prof. V. Thiyagarajan had studied on “Controlling of brushless DCmotorinelectricbicycleusingelectronicbasedcircuitw ith8bitmicrocontroller” International Journal of EngineeringSciences&EmergingTechnologies,vol.4, pp.26-34,Dec2012.