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IRJET- Design and Fabrication of Stair Climbing Trolley
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International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 05 Issue: 03 | Mar-2018 www.irjet.net p-ISSN: 2395-0072 © 2018, IRJET | Impact Factor value: 6.171 | ISO 9001:2008 Certified Journal | Page 685 DESIGN AND FABRICATION OF STAIR CLIMBING TROLLEY Senthil Kumar.G1, Anoop C Abraham2, Anandhagobi.A3, Dinakar.S4 1 Associate professor, Bannari Amman Institute of Technology, Sathyamangalam, Erode 2, 3, 4 UG Student, Bannari Amman Institute of Technology, Sathyamangalam, Erode ---------------------------------------------------------------------***--------------------------------------------------------------------- Abstract - This project aims at making headway for developing a mechanism for transportation of considerable loads over stairs. The requirement for such a trolley emerges from everyday prerequisites in our general public. Hand trolleys are used to lessen the stress of lifting while moving it on flat ground; however, these hand trolley usuallyfailwhenit comes to shifting the load over stairs. This project endeavors to design a stair climbing trolley which helps anyone to carry heavy objects up the stairs with less struggle compared to carrying them physically. Several designs were formulated that would allow a non-industrial hand trolley to travel over stairs which reduce the struggle on the user. In thisproject,the trolley is equipped with Tri-Star wheels which entitle us to convey load up and down the stairs. Key Words: transportation, trolley, lifting, struggle, tri- star wheel, stairs 1. INTRODUCTION The project aim is to design and manufacture a trolley that has multifunction. The trolley is modeled in such a manner that it has tri wheels on every facet that enables shifting the load over stairs. They are set in a triangular shape. This theory concentrates on the maximum intenseergonomically useful to man or woman. The existing challenge related to load wearing equipment of a type that is operated by the hand of shifting upwardly and downwardly on a flight of stairs. Load service is a wheeled mechanism device, is commonly used to hold loads. Its miles is to reduce human efforts. 2. TRI-STAR WHEEL A Tri-Star wheel capability as an ordinary wheel on the flat ground, but has the potential to climb robotically whilst an impediment to rolling is encountered. This wheel configuration contains three tires, every established to a separate shaft. These shafts are positioned at the vertices of an equilateral triangle. While geared on this quasi-planetary style, these triangular sets of wheels can negotiate many kinds of terrain. They can also permit a vehicle to climb over small obstructions inclusive of rocks, holes, and stairs. 3. Material Selection 3.1 Trolley body Mild steel is the most well-known type due to the fact its price is tremendously low even as it affords material properties that are best for plenty applications, greater so than iron. Low-carbon metallic includes approximately 0.0503 percentage carbon making it malleable and ductile. Mild steel has a relatively quite low tensile strength, but it is cheap and malleable; surface hardness can be increased through carburizing. 3.2 Tri-Star wheel web StainlessSteelGrade ismaterial with a higher chromiumand lower carbon content. Lower carbonminimizesprecipitation due to welding and its susceptibility to intergranular corrosion. Therefore, this combination can be utilized as a partof the as-welded condition, even in corrosiveconditions. It regularly gets rid of the necessity of annealing weldments besides for applications specifying strain remedy. 3.3 Bearing The most common material used to produce bearing is Chrome Steel. A ball bearingis a sortof rolling-detail bearing that makes use of balls to hold the separation among the bearing races. The reason of a ball bearing is to lessen rotational friction and aid radial and axial loads. 4. MANUFACTURING PROCESSES 4.1 Gas cutting (Oxy-Fuel cutting) Oxy-fuel cutting is a value-effective approach of plate edge preparation. The oxyfuel gas cutting process creates a chemical reaction of oxygen with the base metal at elevated temperaturesto sever the metal. We'veused thisreducingto reduce the measured lengths of mild steel pipes and flat bottom plate as in step with our design and necessities. 4.2 Pipe bending Tube bending asa technique starts off evolvedwithloadinga tube right into a pipe bender and clamping it into region amongdies, the clamping block andthe formingdie.Thetube is also loosely held through two different dies, the wiper die and the strain die. The system of tube bending involves the
2.
International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 05 Issue: 03 | Mar-2018 www.irjet.net p-ISSN: 2395-0072 © 2018, IRJET | Impact Factor value: 6.171 | ISO 9001:2008 Certified Journal | Page 686 usage ofmechanical pressure topush pipe ortubingagainsta die, forcingthe pipe or tube to conform tothe form of the die. 4.3 Plasma arc cutting Plasma cuttingis a method this is used to cut metal andother metals of different thickness and now and again different substances, using a plasma torch. In this system, an inert gasoline is blown at excessive speed out of a nozzle at the identical time an electrical arc is shaped through that fuel from the nozzle to the floor being cut, turning some of that fuel to plasma. The plasma is adequately hot to melt the metallic being reduce and movements sufficiently speedy to blow molten metal far away from the cut. 4.4 Arc welding These processes use a welding power supply to create and keep an electric arc among an electrode and the bottom to soften metals at the welding factor. They could use both direct (DC) and alternate (AC) cutting-edge, and consumable ornon-consumable electrodes.Thewelding place is every so often included by some sort of inert or semi-inert gasoline, referred to as a protecting gas, and filler material is sometimes used as nicely. 5. DESIGN SPECIFICATION & DESIGNED MODEL Fig -1 Assembly design with dimensions in mm Fig -2 Designed & Rendered Model 6. CALCULATION L1=520mm, L2=40mm & L3=40mm F=100+100=200 Kg Therefore, 100 ✕ 9.81=981 N Under equilibrium condition sumof all vertical forcesis zero RA – 981 – 981 + RB = 0 RA + RB =1962 N Taking moment about A (∑mA = 0) (RA ✕ 40) + (981 ✕ 560)–(RB ✕ 600) =0 RB = 981 N RA = 981 N Bending moment at A =0 Bending moment at B =0 Bending moment at C 981 ✕ 40 = 39240 N mm Bending moment at D 981 ✕ 40 = 39240 N mm Considering the maximum bending moment M= (π/32) ✕ d3 ✕ σb σb = σyt / factor of safety For Yield Stress for Stainless Steel, σyt = 1300 N/mm2 Therefore σb = 1300 / 3 = 433.3 N/mm2 39240 = π/32 ✕d3 ✕433.3 d= 9.749 mm say 10 mm (Considering F.S. = 3) (From data book) d=10 mm ∴ Diameter of pipe needed to withstand load =10 mm 7. CONCLUSIONS This project is for building up a trolley for easy transportation of overwhelming burdens over stairs. The requirement for such a framework emerges from ordinary prerequisites in our public. It may be considered as small contribution to our society for domestic motive to boost the loadsthrough domestic load carrier trolley. Thistrolleyruns over the steps very easily.
3.
International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 05 Issue: 03 | Mar-2018 www.irjet.net p-ISSN: 2395-0072 © 2018, IRJET | Impact Factor value: 6.171 | ISO 9001:2008 Certified Journal | Page 687 REFERENCES [1] Mulik Shriniwas, Salunkhe Rohit, Shaikh Shahrukh, Waghmode Dada, and Swipnil Gaikwad(2016),Advance material handling trolley using tri-wheel mechanism, International Journal of Recent Research in Civil and Mechanical Engineering, ISSN 2393-8471,Vol.2,Issue2, pp: (160-165).M. Young, The Technical Writer’s Handbook. Mill Valley, CA: University Science, 1989. [2] Sonukumar Krishnaprasad Singh, Jaydev Harishkumar Lad, Husen P. Kuranjekar, Virendra J. Tekade, and SwapnilSrivastav (2017), Design and Fabrication of Semi-Automatic Stair Climbing Trolley, International Journal of Engineering Science and Computing, Volume 7 Issue No.3, pp: (5619-5620).K. Elissa, “Title of paper if known,” unpublished. [3] Roshan Alaspure, Chaitali Barmase, Snehal Chambhare, Manish Mandhre, and Prof. Yogesh G. Joshi (2016), Fabrication of Stair Climbing Wheel Mechanism: Alternate for lifting goods, International Research Journal of Engineering and Technology, e-ISSN: 2395 - 0056, Volume: 03 Issue: 05, pp: (553-555). [4] P.Jey Praveen Raj, P.M.Mohamed Fuge, R.PaulCaleb,and G.Natarajan (2016), Design and Fabrication of Stair Climbing Trolley, International journal of Advancement in Engineering Technology, ISSN NO: 2349-3224, Volume: 3 Issue: 5, pp: (89-102). [5] Pratik R. Baviskar, Aniket V. Naik, Ganesh B. Payghan, Abhijit P. Sarkar, and Santosh P. Joshi (2017), Design, Analysis and Fabrication of Automated Staircase- Climbing Load Carriage, International Journal of Scientific and Engineering Research, ISSN 2229-5518, Volume 8, Issue 5, pp: (1434-1440). BIOGRAPHIES Senthil Kumar.G is working as an Associate professor in thedepartmentof Mechanical Engineering at Bannari Amman Institute of Technology, Sathyamangalam. Anoop C Abraham currently pursuing the final year B.E degree in Mechanical Engineering in Bannari AmmanInstitute of Technology, Sathyamangalam. Dinakar S currently pursuing the B.E degree in Mechanical Engineering in Bannari Amman Institute ofTechnology, Sathyamangalam. Anadhagobi A currently pursuing the final year B.E degree in Mechanical Engineering in Bannari AmmanInstitute of Technology, Sathyamangalam.
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