Gyrotonic Aftermarket Bench Lift Design ME ME 395 F Fin inal l Pr Proje ject Gr Group up 1 1 Da David id T Tric ick, An Andr drew ew Du Duong ng, Hu Huy Le, e, Mi Micha hael el Gi Gilr lroy & & Ni Nick Schl hlec eck
Problem Statement • Devel velop op an after er-ma market rket ki kit to fac facil ilit itate ate qu quic ick and ea easy adju justme tment nt of th f the e bench nch uni nit t heig ight: ht: • Two wo in incr crements ements of t f two wo in inches hes ea each • No perm ermanent anent modification ification of be f benc nch • Cannot interfere with user’s feet • Must ust be ab e able le to to sl slid ide e wi with th ben ench ch • Cannot increase resting height by more than ½” • <$500 00 retail etail cost st • Lif ifet etime ime gua uarantee rantee [1]
Project Planning & Research • Leslie’s additional criteria: • En Engi gineering neering Cr Criteri iteria a to ex o expl plor ore: e: • up t to 6 o 6" o " of s f smoo ooth mov ovemen ent! t! • Ec Econ onomics omics – in initial itial and nd lon long-ter erm • Attractive tractive pack ckag age • Sp Spee eed o d of s f sys ystem em • Mi Minim nimal al work ork by u y use ser • Noi oise se • And more… • Ea Ease se of u f use se • Ea Ease se of s f set etup up and nd de detachmen achment • Ae Aest sthetic hetic va value lue • Phy hysic sical al work ork in inpu put by by u use ser • St Stability bility [2]
Concept Generation • Activit tivities ies wit ith h Polina’s Gr Group oup: Bra rainstorming & gi instorming & gift t car ards ds • Pot oten ential tial Id Idea eas: s: • Bot ottle le ja jack ck sy syst stem em • Ce Ceiling iling ho hois ist • In Infl flatable atable be bed • Pne neum umatic atic cylinder ylinders • Me Mechanical hanical sc sciss issor or li lift t sy syst stem em [3] [4]
Concept Exploration: Hydraulics • Ide deas: s: • Bo Bottle e Jac acks ks • Sy Syst stem em with pist ston ons Bot ottle e Jack ck Hydra rauli ulic c Sy Syst stem em Pr Pros os: Pr Pros os: Quiet, simple, cheap, Quiet, powerful, exact. powerful Co Cons: s: Co Cons: s: Work done by user, Expensive, design is have to replace bottle, not simple, possible aesthetically leakage, not in unpleasing aesthetic of gym
Concept Exploration: Mechanical • Ide deas sc screw ew j jac ack k lift • sciss sc ssor or lift • • Pr Pros: s: si simple le tec echnol nology ogy, , • little to e to no m o mai aint ntenance enance • • Cons ns: not ot ea easy sy to c o con onst struc ruct o t or find • met etal al pa parts ts n not ot ae aest sthet hetically cally • plea easi sing ng pot oten entially ally dem emand ands s too oo m much uch • wor ork k from om use sers
Concept Exploration: Pneumatics • T ech chnolog ology y use sed to to li lift t off ffice c ice chair airs • Pros os • easy sy for cli lients s to us use • rela lativ ively ly in inexp xpensi sive • Co Cons ns • may not b be a abl ble to li lift we weig ight • di difficu icult lt to a adj djust st to ex exact ct heig ight d desi sired
Concept Exploration: Electrical Linear Actuators • Mo Motor po or powered ed li lifts ts • Pros os: • de desi sign gn t to su supp pport la large ge st stress ss lo loads ds • easy sy to us use by by c cli lients • Co Cons: s: • requ quir ires ext s extern rnal l po powe wer so r sour urce • wi wires • po potentia iall lly exp xpensi sive
Control linear actuator system Up Up & D & Dow own Sw n Switc itch • Two wo-si sided ed but utto ton n • sw swit itch
Control by remote Re Receiver eiver bo board: d: $7 $70 Tra ransmitter nsmitter: $6 $65 DC C ada dapt pter er: $2 $25 Li Lines nes & & ju jumper per chip hip: $1 $10 ht https ps://w //www ww.you .youtub tube.com e.com/w /w atch? ch?v=hN7 v=hN7Wl2Uwb Wl2Uwb8s 8s
Concept Selection • Hou ouse se of Q f Quality: lity: • type pe o of de devic ice, mountin ing g to be bench, a and p d powe wer so source the m most st im impo portant factor ors • Pugh Ch Charts: ts:
Final Design – Housed Linear Actuators • Th Three 6" ee 6"-lif lift t li linear ear actua tuator tors • 2 i in fr front, 1 in in b back • Ele lectrical ically ly po powe wered • Ce Central tral con ontr trol ol boa oard • Front and b d back controll lled d in inde depe pende dently ly • Woo ooden bench h attach tachmen ments ts • Fit it onto horiz izontal l su supp pports • Strapp pped o d onto be bench • Woo ooden hou ousi sings a s and ba base ses • Large ge ba base se bo boards ds for st stabi bili lity • Me Metal l actuat ators s hid idde den
Final Design Drawbacks • El Electr ectrical ically ly po power ered ed- ha hard d to m o match tch wit ith h curr urrent ent Se Seattle tle Ch Changin nging g Ro Room om a aes esthetic hetic • Mod Moder erately ately sl slow ow to to ch change nge he heig ights hts • Co Corded ded- pr pres esent ents pos s possi sibl ble e trip ripping ha ping hazar ard • Ti Time-int intensive to p ensive to prod oduc uce e ho hous usin ings gs, po poten ential tially ly cos ostly ly as w s well ell
Final Design Strengths • Ea Easy sy to us o use; e; sw swit itch ch-op operated erated • Re Requ quir ires ver es very y lit little tle work fr ork from om us user er • 5 1 5 1/2 /2" " con ontinuou tinuous s ra rang nge • Ea Easy sy to a o adj djus ust t to ex o exact ct he heig ight ht de desi sired ed • Lo Low ma mainten intenance ance cos osts • Lo Low pr profile, file, apa part t fr from om actuator tuator ho hous usin ings gs • Wou ould ld allow be llow benc nch h to sl o slid ide, e, in in the heor ory • Ca Can be n be r rem emoved oved whe hen n ne necess essar ary
Video - Testing on the Bench
Cost & Finances Par arts/ s/Compo Component nents Pr Price ce Inexp In expen ensive sive to to pr prod oduce ce • Li Linear ear Act ctuator ators s (3) $114 114 Lo Low i inst stall allati ation on co cost st • Low f Lo futur ure e mai ainte ntenance nance co cost st • Elec ectrical cal wiring & co & control ols $38 38 Ener ergy y co cost st v ver ery low ow • Woo ood $20 20 Elec ectrici city ty • Us Use f e for or on only y sh shor ort p t per eriods ods of t time, e, • Har ardwar are $10 10 les ess t s than an a m a minut nute e to o per erform orm tas ask Will be e virtuall ually y ne negli ligib ible le Attach achment ment st straps aps & & co cords $15 15 • T ot otal al Ma Mate teri rial al Co Cost sts $197 197
Manufacturing Type o e of Co Cost st Amou ount nt Mat ater erial als $90 90 Labor La or & M & Man anufactur ufacturin ing $50 50 Tran ansp spor ortati ation on $10 10 Su Sub T T ot otal al $150 150 50 0 Per ercent cent Ret etai ail l Markup arkup $150 150 T ot otal al Ret etai ail l Co Cost st $30 300
Safety & Reliability • Fi Final nal de desi sign gn is is du dura rable ble and nd st stur urdy dy • he hefty ba base se we weig ight ht • wo won't 't tip ip e easi sily ly • Ca Can ea n easily sily su supp ppor ort weig eight ht • Me Measu sured ed be benc nch h we weig ight ht - 110 lb lb • max x lo load ea d each h actua uator r can n su supp pport - 330 lb lb • x3 x3 ac actuator uators s = 9 990 90 lb • Sa Safe fety ty Factor ctor of 4 f 4 • fail ilur ure e thr hres esho hold ld (9 (990)/ ant ntic icip ipated dut ed duty ( (be benc nch + 1 h + 150 lb lb p per erso son) n)
Works Cited • [1 [1] ] K. E. E. El Elder er, ME ME 3 395 - Con oncept ptual al Desi sign gn Proj oject ct . . Seattle, W ttle, WA: Un Univ iver ersity o sity of f Wash shin ington ton, , 2015. • [2 [2] ] Amaz azon on.co .com. m. ECO ECO-WO WORTHY THY 2' 2'' 4' ' 4'' 6" ' 6" 8'' 8'' 10 10'' '' 12 12" " 14 14'' '' 16 16'' '' 18 18'' '' Heav avy y Duty y 330lb lbs Li s Linea ear r Actu tuat ator or with th Mo Mountin ing Br g Brac ackets ts [O [Online] nline]. . Ava vailable ilable: : ht http tp://www ://www.a .amazon mazon.co .com/EC m/ECO-WOR WORTHY THY-Act Actuator uator-Mo Moun unting ting-Brackets Brackets- Ele lectr ctroic/d oic/dp/B p/B00 00WW5 WW5XPT XPT4/r 4/ref= ef=sr_ sr_1_3?ie= 3?ie=UTF UTF8&qid 8&qid=14 14398 398768 76892 92&sr= &sr=8- 3&keywor eywords= s=linea linear+actu r+actuator ator • [3 [3] ] Co Contr trol ol lin linear ear actu ctuator ator by y remo mote te con ontr trol: ol:http https: s://www //www.you youtu tube.c e.com om/watch? /watch?v=hN v=hN7Wl2 7Wl2Uw Uwb8s
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