ME 4182 Mid Term Presentation

Team MoondogsOctober 2, 2006

From left: Rahul Kirtikar, Chris Sampson, Chris Culver, Mike From left: Rahul Kirtikar, Chris Sampson, Chris Culver, Mike Widerquist, Elias KrauklisWiderquist, Elias Krauklis

http://www.prism.gatech.edu/~mefach21http://www.prism.gatech.edu/~mefach21

ObjectivesObjectives

Problem StatementProblem Statement Design PartitionDesign Partition Task Assignments and Project PlanTask Assignments and Project Plan Current SolutionsCurrent Solutions Conceptual DesignsConceptual Designs Evaluation Matrix and Design Evaluation Matrix and Design

SelectionSelection Future PlansFuture Plans

Problem StatementProblem Statement A typical trash bag holds about 13 A typical trash bag holds about 13

gallons, a lot of which is empty spacegallons, a lot of which is empty space For the average family, this equates For the average family, this equates

to taking out the trash once or twice to taking out the trash once or twice per dayper day

The most viable solution is to The most viable solution is to compact the trash and minimize the compact the trash and minimize the empty spaceempty space

Current automatic trash compactors Current automatic trash compactors exist but cost over $400 and require exist but cost over $400 and require installationinstallation

Problem StatementProblem Statement

A manual trash compactor can perform A manual trash compactor can perform the same duty without the high cost and the same duty without the high cost and permanent fixturepermanent fixture

A manual trash compactor will reduce the A manual trash compactor will reduce the frequency of replacing the trash bag by at frequency of replacing the trash bag by at least half, per dayleast half, per day

Trash can should be relative in size to a Trash can should be relative in size to a typical kitchen trash can of 13”x10”x30”typical kitchen trash can of 13”x10”x30”

It should also be aesthetically pleasing It should also be aesthetically pleasing and easy to operateand easy to operate

Design PartitionDesign Partition Trash CanisterTrash Canister

Responsible for sustaining the unit that holds the Responsible for sustaining the unit that holds the trashtrash

Square, circular, and rectangular canistersSquare, circular, and rectangular canisters Trash ContainerTrash Container

The actual unit that holds the trashThe actual unit that holds the trash Trash bags, separate canisters, and plastic liningsTrash bags, separate canisters, and plastic linings

Trash EnclosureTrash Enclosure Encloses the trash into the trash canister from the Encloses the trash into the trash canister from the

visual publicvisual public Hinged lids, removable lids, pull-out systems, and Hinged lids, removable lids, pull-out systems, and

flapsflaps

Design PartitionDesign Partition

Trash CompactorTrash Compactor Two major parts of this assembly must include Two major parts of this assembly must include

a compaction plate and a device that moves a compaction plate and a device that moves the compaction plate into the trash the compaction plate into the trash

A circular or rectangular plate for the A circular or rectangular plate for the compaction surface, as well as a hydraulic lift, compaction surface, as well as a hydraulic lift, a ratchet jack system, a crank system, a a ratchet jack system, a crank system, a scissor jack, and an auger scissor jack, and an auger

Movements can come from the top to bottom Movements can come from the top to bottom of the canister, from the bottom to top of the of the canister, from the bottom to top of the canister, or from the walls of the canister canister, or from the walls of the canister

Task AssignmentTask Assignment Chris SampsonChris Sampson

Team leaderTeam leader Lead weekly reportsLead weekly reports Coordinate and mediate Coordinate and mediate

group meetingsgroup meetings

Rahul KirtikarRahul Kirtikar Website managerWebsite manager Maintenance of Maintenance of

deliverablesdeliverables CADCAD

Michael WiderquistMichael Widerquist Construction managerConstruction manager Purchasing and Purchasing and

fabrication of design partsfabrication of design parts Part drawingsPart drawings

Chris CulverChris Culver Construction managerConstruction manager Purchasing and Purchasing and

fabrication of design partsfabrication of design parts Prototype developmentPrototype development

Elias KrauklisElias Krauklis Patent researchPatent research Engineering analysisEngineering analysis Material acquisitionMaterial acquisition

Week 1 Week 2 Week 3 Week 4 Week 5 Week 6 Week 7 Week 8 Week 9 Week 10 Week 11 Week 12 Week 13 Week 14 Week 15 Week 16December

23 28 6 13 18 25 2 9 16 23 30 6 13 20 27 6Deliverable:Team Selection AllProject Bids AllProject Selection AllProblem Statement CS, RKWebsite MaintenanceConceptual Design AllDesign Parition CSProject Plan CC, MWTask Assignments RKPatent/Product Search EKSelection Analysis AllMidterm Presentation AllPost Midterm Review AllLayout DrawingsRecess AllEngineering Analysis CS, EKPart DrawingsPrototype Review/ConstructionFinal ReportFinal PresentationPosterboard DisplayFinal Term ChecklistPeer Evaluations All

CC- Chris CulverRK- Rahul KirtikarEK- Eli KrauklisCS- Chris SampsonMW- Mike Widerquist

CC, MW

CC, MW, RK

November

Project Plan

RKCC, MW

All

CS, EK

RK

August September October

All

Project PlanProject Plan

Current Solutions:Current Solutions:“Linkage Manual Trash “Linkage Manual Trash

Compactor”Compactor”Patent # 6,851,357 Feb. 8Patent # 6,851,357 Feb. 8thth, 2005, 2005 Inventor: Rudolph Inventor: Rudolph MartorellaMartorella

Utilizes a coupling arm Utilizes a coupling arm (30) connected to a lever (30) connected to a lever arm (26) which is arm (26) which is connected to the plunging connected to the plunging arm (36)arm (36)

The plunging arm lowers The plunging arm lowers the compression plate (50) the compression plate (50) and compress the garbageand compress the garbage

The container is a slideable The container is a slideable tray which allows for tray which allows for concealmentconcealment

Current Solutions:Current Solutions:“Rack and Pinion Manual Trash “Rack and Pinion Manual Trash

Compactor”Compactor”Patent # 5,619,915 April 15th, 1997Patent # 5,619,915 April 15th, 1997

Inventor: William E. WagnerInventor: William E. Wagner Includes a trash bin that is Includes a trash bin that is

mounted to a portable platformmounted to a portable platform The trash bin is then The trash bin is then

connected to a compaction connected to a compaction plate that is held together by a plate that is held together by a rack and pinion gearrack and pinion gear

A drive wheel is connected to A drive wheel is connected to the gearing to allow for the gearing to allow for lowering of the compression lowering of the compression plateplate

A compression spring is used A compression spring is used to return compression plate to to return compression plate to original positionoriginal position

Drain holes are contained on Drain holes are contained on the bottom of the portable the bottom of the portable platform for use when cleaningplatform for use when cleaning

Current Solutions : Current Solutions : Automatic Trash CompactorAutomatic Trash Compactor Uses a Uses a

mechanically mechanically driven piston to driven piston to crush trashcrush trash

Can apply large Can apply large amount of amount of compacting forcecompacting force

Expensive : Expensive : approx. $400approx. $400

Current Solutions : Current Solutions : “The Bettermaid Compactor”“The Bettermaid Compactor”

Produced by Bettermaid Produced by Bettermaid Compactors Inc.Compactors Inc.

Incorporates the use of a Incorporates the use of a scissor mechanism within a scissor mechanism within a refuse binrefuse bin

Allows for application of up Allows for application of up to 400 lbs force of to 400 lbs force of compactioncompaction

Cost is $129.99Cost is $129.99 Compaction ratio is around Compaction ratio is around

2:1 (by inspection)2:1 (by inspection) Endorsed by Canadian Endorsed by Canadian

Heavy Weight Boxing Heavy Weight Boxing Champion Donovan "Razor" Champion Donovan "Razor"

RuddockRuddock

Conceptual Designs:Conceptual Designs:Grinder DesignGrinder Design

Conceptual Designs: Conceptual Designs: Side Trash CompactorSide Trash Compactor

The trash lid has to be The trash lid has to be removed to lift the side panel removed to lift the side panel out from in front of the out from in front of the compaction plate compaction plate

Once the side panel is Once the side panel is removed the lid can be removed the lid can be replaced and the compaction replaced and the compaction can begin can begin

The compaction in this The compaction in this design has the ability to be design has the ability to be very strong since a foot very strong since a foot mechanism or a long hand mechanism or a long hand crank can be placed one foot crank can be placed one foot off the ground off the ground

The side panel may not be The side panel may not be needed if a trash bag could needed if a trash bag could be used in this design be used in this design

Conceptual Designs: Conceptual Designs: Auger DesignAuger Design

Auger with grooves Auger with grooves reversed to cause reversed to cause compaction instead of compaction instead of extrusionextrusion

Trash is placed into Trash is placed into canister through lid canister through lid openingopening

With an adequate amount With an adequate amount of trash the auger is rotated of trash the auger is rotated which causes compactionwhich causes compaction

Spring Loaded plate is then Spring Loaded plate is then released to allow waste to released to allow waste to fall into canisterfall into canister

Auger Crank

Lid

Canister

Release Point

Conceptual Designs: Conceptual Designs: Foot Pedal DesignFoot Pedal Design

First, compacts the First, compacts the trash by placing the trash by placing the lid on the containerlid on the container

Then, a foot pump Then, a foot pump motion lifts an motion lifts an inner trash inner trash container straight container straight up onto a up onto a compacting plate compacting plate stabilized by ones stabilized by ones handhand

Conceptual Designs: Conceptual Designs: Hydraulic Lift and Hydraulic Lift and Compaction DesignCompaction Design

Hydraulic bottle jack Hydraulic bottle jack attached to base of attached to base of outer canouter can

Easily operated by a foot Easily operated by a foot pedalpedal

Capable of applying Capable of applying hundreds of pounds of hundreds of pounds of forceforce

Upper lid is retracted Upper lid is retracted into the trash can to into the trash can to compress the trash as a compress the trash as a mechanism of the mechanism of the hydraulic jack.hydraulic jack. Hydraulic Lift and

Compaction Design

Conceptual Designs: Conceptual Designs: Hydraulic Bottle Jack Hydraulic Bottle Jack

DesignDesign Inverted hydraulic Bottle Inverted hydraulic Bottle

Jack attached to inside of Jack attached to inside of lidlid

Easy to operate by pumping Easy to operate by pumping the lever to extend the jack the lever to extend the jack armarm

Capable of applying several Capable of applying several thousand pounds of forcethousand pounds of force

Easy to retract the arm by a Easy to retract the arm by a turn of the lever to release turn of the lever to release hydraulic pressurehydraulic pressure

Side removal of trash bagsSide removal of trash bags

Retracted Bottle Jack

Pair-wise Comparison Pair-wise Comparison MatrixMatrix Accounts for relative importance of each design aspectAccounts for relative importance of each design aspect

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Garbage Volume Reduction - 0 0 0 1 0 0 0 0 1Weight 1 - 0 0 1 1 0 1 0 1Size 1 1 - 0 1 1 0 1 0 1Aesthetics 1 1 1 - 1 1 1 1 1 1Usability 0 0 0 0 - 0 0 0 0 1Portability 1 0 0 0 1 - 1 1 0 1Cleanliness 1 1 1 0 1 0 - 1 0 1Robustness 1 0 0 0 1 0 0 - 0 1Safety 1 1 1 0 1 1 1 1 - 1Cost and Producibility 0 0 0 0 0 0 0 0 0 -Equalizer Point 1 1 1 1 1 1 1 1 1 1FINAL WEIGHT 8 5 4 1 9 5 4 7 2 10

Evaluation Matrix Evaluation Matrix

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Garbage Volume Reduction 8 3 1 4 3 4 3 2 5Weight 5 1 3 3 2 3 3 5 1Size 4 3 5 3 2 4 3 5 4Aesthetics 1 4 4 4 2 3 3 4 4Usability 9 4 3 3 1 4 4 4 5Portability 5 2 4 3 1 3 3 4 1Cleanliness 4 1 1 4 5 4 4 4 3Robustness 7 3 4 3 3 2 4 2 5Safety 2 4 1 5 4 4 5 5 5Cost and Producibility 10 1 2 3 1 2 5 3 1TOTAL 134 148 182 117 175 209 191 182Normalized Total 0.64 0.71 0.87 0.56 0.84 1.00 0.91 0.87

Design Selection : Design Selection : Hydraulic Foot PedalHydraulic Foot Pedal

•100 lbf input force from the leg

•400 lbf output force from the hydraulic system

•Telescope elevates 1.5 inches per pump

•Total of 7 to 10 pumps for completion

Future PlansFuture Plans

Need to research the mechanics of a Need to research the mechanics of a check valve as well as oil reservoir check valve as well as oil reservoir systemsystem

Determine placement and method of Determine placement and method of pressure release valvepressure release valve

Questions?Questions?Suggestions?Suggestions?