Material Handling Equipment - Industrial and Systems Engineering

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MATERIAL HANDLING EQUIPMENTStorage racks are used when support and/or material accessibility is required2. Selective pallet rackPallets are supported between load-supporting beams. Most popular type of storage rack. Specialattachments and decking can be used to make the racks capable of supporting other types ofunit loads besides pallets (e.g., coils, drums, skids)Load-on-beam racks are used to provide clearance for straddles; load-on-floor racks can be usedwhen it is not necessary to use straddles.2(a) Single-deep rackSingle position (slot) per positionAdv: Provides complete and fast accessibility to allloads with no honeycomb lossDisadv: Can result in low cube utilization because ofaisle space requirements, which can be influencedby the lift truck used (e.g., a turret truck wouldincrease and a standard counterbalanced woulddecrease utilization)2(b) Double-deep rackTwo pallets stored per positionAdv: Provides greater cubeutilization than single-deepracks because more loads can beaccessed from the same side ofthe rackDisadv: In order to access rearload in rack, an extendedreaching mechanism is requiredon the lift truck[NAVSUP Pub 529]Typically used when the inventory level for an item is at least five or when loads are stored andpicked in multiples of two pallets 1656
8. STORAGE EQUIPMENT3. Drive-in rackLoads are supported by rails attachedto the upright beams. Lift trucksare driven between the uprightsbeams.Adv: Provides high density palletstorage.Disadv: Requires uniform-size loads.Lengthy storage and retrievaltimes due to care required bydriver inside of the rack.Closed at one end, allowing entryfrom one end (LIFO)4. Drive-through rackSimilar to drive-in rack, except open atboth ends, allowing access fromboth ends (FIFO)Used for staging loads in a flow-thrufashion [Frazelle, WC WH and MH]5. Push-back rackLoads are supported on an incline to enablegravity-based movement of the loads withinthe rack via roller conveyor. Used toprovide highly accessible pallet storage.Provides LIFO storage in each lane: Loadedand unloaded at the lower end and closed atthe higher endAdv: Can be used to enable deep-reachstorage without the need for extended reachmechanisms for loading/unloading57
Page 3 and 4:
1. OVERVIEW OF MATERIAL HANDLING6.
Page 5 and 6: 1. OVERVIEW OF MATERIAL HANDLING•
Page 7 and 8: 2. MAJOR EQUIPMENT CATEGORIES2. Maj
Page 9 and 10: 2. MAJOR EQUIPMENT CATEGORIESTransp
Page 11 and 12: 3. LOAD FORMATION EQUIPMENT3. Skids
Page 13 and 14: 3. LOAD FORMATION EQUIPMENT12. Inte
Page 17 and 18: 3. LOAD FORMATION EQUIPMENTabreast
Page 19 and 20: 3. LOAD FORMATION EQUIPMENTFigure 4
Page 21 and 22: 4. POSITIONING EQUIPMENTLifting Equ
Page 23 and 24: 4. POSITIONING EQUIPMENT8. HoistUse
Page 25 and 26: 5. CONVEYORS5. ConveyorsConveyors a
Page 27 and 28: 5. CONVEYORS3(a) Gravity roller con
Page 29 and 30: 5. CONVEYORS9. Bucket conveyorBulk
Page 31 and 32: 5. CONVEYORSSeries of flexible conv
Page 33 and 34: 5. CONVEYORSindependently and the t
Page 35 and 36: 5. CONVEYORSTilt tray sorters usual
Page 37 and 38: 6. CRANES2. Bridge craneBridge moun
Page 39 and 40: 7. INDUSTRIAL TRUCKS7. Industrial T
Page 41 and 42: 7. INDUSTRIAL TRUCKS1(a) Two-wheele
Page 43 and 44: 7. INDUSTRIAL TRUCKS5(a) Walkie pla
Page 45 and 46: 7. INDUSTRIAL TRUCKS9(a) Operator-d
Page 47 and 48: 7. INDUSTRIAL TRUCKSabsolute positi
Page 49 and 50: 7. INDUSTRIAL TRUCKSPrinciple of Op
Page 51 and 52: 7. INDUSTRIAL TRUCKS0( ) − ( )M
Page 53 and 54: 7. INDUSTRIAL TRUCKS3. Forks: attac
Page 55: 8. STORAGE EQUIPMENT• Dead-reckon
Page 59 and 60: 8. STORAGE EQUIPMENT7. Sliding rack
Page 61 and 62: 8. STORAGE EQUIPMENTOne operator pi
Page 63 and 64: 8. STORAGE EQUIPMENTS/R Machine: An
Page 65 and 66: 9. MH EQUIPMENT SELECTIONTable 12.
Page 67: 10. REFERENCES10. ReferencesThe fol
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Material Handling Equipment - Industrial and Systems Engineering

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