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Wegman’s Bread Tray Lift Assist

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

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Wegman’s Bread Tray Lift Assist

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

  2. Wegman’s Bread Tray Lift Assist • Goal:Improve ergonomics for operator during the task of stacking loaded bread trays at the Wegman’s Bakery.

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

  4. Specifications • Minimize step time • Mechanical components are constructed from food safe material • Allow for food to descend no closer to the floor then ½ inch

  5. Lower each tray from waist level Eliminate need to bend over Maintain waist level loading Lower Trays 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 Functional Decomposition 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. Why Not Electric • Skill set • Programming and Controls • Safely • Eye wash station for battery • Cords are tripping hazard • Maintenance • Source of power • Less versatile • More complex

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

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

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

  11. Variation in Design • Side guard material • Overall material • Foot pedal Release • Fork vs. Plat form

  12. Questions and Comments

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