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Wegmans Bread Tray Lift Assist

Wegmans Bread Tray Lift Assist. Senior Design Review Andrew Beasten Greg Feather Alex Phillips Brendan Moran. Wegmans Bread Tray Lift Assist. Goal: Improve ergonomics for operator during the task of stacking loaded bread trays at the Wegmans Bakery . Critical Needs.

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Wegmans Bread Tray Lift Assist

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  1. Wegmans Bread Tray Lift Assist Senior Design Review Andrew Beasten Greg Feather Alex Phillips Brendan Moran

  2. Wegmans Bread Tray Lift Assist • Goal:Improve ergonomics for operator during the task of stacking loaded bread trays at the WegmansBakery

  3. Critical Needs • Enable good ergonomic practices in terms of lifting and body position • Meet Wegmanssafety requirements in terms of mechanical operation and physical aspects (sharp edges, pinch points) • Meet Wegmansrequirements in terms of cleaning and food contamination risks • Ease of use for operator • The unit should be durable and reliable

  4. Specifications • Minimize process time • Mechanical components are constructed from food safe material • Allow for food to descend no closer to the floor than ½ foot

  5. Functional Decomposition Lower each tray from waist level Maintain loading at waist height Constant force mechanism Ramping mechanism Hold first and subsequent trays until dolly touches floor Hold Trays Keep relatively horizontal Keep dolly with trays Dolly slides off Release from system Tray Slides onto dolly Reset Lift Mechanical reset Continuous reset

  6. Holding Trays Clips Forks Hooks Flat base Magnet Lifting Trays Weight Spring Motor Piston Rack Pinion Pulley Remove from System Push/Pull Magnet Fall Lift Reset Lifter Button Manually Switch Pedal Lever Pull Cord Position Tray clips wedge Rubber Stopper Guide Rail Magnet Slots/Grooves Walls Collapse Tab Hinge Cotter Pin Magnet Screw

  7. Pugh Matrix Results For Lifting Trays • Criteria Considered:Ease of use, resetability, durability, portability, cost, safety, storage, maintenance, simplicity, and input required • Ranking system: 1-3

  8. Pugh Matrix Results For Reset Mechanism • Criteria Considered:Cost, feasibility, practicality, maintenance, safety, simplicity, endurance and adaptability

  9. Why Not Electric • Skill set • Programming and Controls • Safety • Eye wash station for battery • Cords are tripping hazard • Maintenance • Source of power/Tethered • Less versatile • More complex

  10. Proposed Design • Skeleton Frame • Sheet metal wrap • Springs and Damper • Track guided system • Lockable wheels • Lock at bottom position • Lever vs. foot pedal

  11. Variation in Design • Side guard material • Overall material • Foot pedal release • Fork vs. plat form • Wall vs. leg support

  12. Risks Design Risks: • Spring failure • Metal bending • Pinch points • Sharp edges • Fast movement/impact risk • Trip hazards • Design failure/product does not work • Visibility • Incorrect guarding • Tipping/fall danger • Lubrication concerns • Metal shavings • Ergonomic failures • Unstable product

  13. Project Plan

  14. Questions and Comments

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