Material Handling Equipment - Industrial and Systems Engineering

7. INDUSTRIAL TRUCKS0( ) − ( )M −∆M W0 F + L0225 30 100 42 90,000 −2550W0′ ⋅ − ⋅= = = = 2, 242 lbs.F + L15 + 24 39Lift Height: up to 40 feet using single-, double-, triple-, and quad-stage masts; for multiple-stagetrucks, the free lift is the length of fork movement before the mast starts to move (importantwhen traveling through doorways and inside trailers).In determining a truck’s approximate allowable load capacity using (0.1), its rated load moment(M 0 ) should be reduced by 4,800 in·lbs for every foot of lift greater than 13 ft.Power Sources: determines where truck can operate (inside/outside) and the gradability of thetruck (i.e., how steep an incline the truck can climb).1. Internal Combustion Engine: gradability of 15%(a) Gasoline—no one makes anymore(b) Diesel—only for outside operation(c) Liquid Petroleum Gas (LPG)—outside and ventilated inside operation (80% oftrucks)2. Electric Motor: gradability of 10%(a) Battery Powered—inside operation; requires battery recharge stationTires: determines what type of terrain the truck can operate over1. Pneumatic—outside (rough terrain)2. Cushion—inside and outside (smooth terrain)3. Solid—insideAttachments: determines the functionality of the truck1. Mast: attachments to the mask of the truck(a) Shelf Guides—e.g., masking tape on the mast to mark the height of shelves2. Carriage: attachments to the carriage that moves on the mask(a) Sideshifter—shifts the forks without repositioning the truck(b) Fork Positioner (spreader)—each fork can move independently (aids loadstabilization when a variety of pallet sizes are used)(c) Rotators—enable dumping of a load when used with barrel clamps(d) Push/Pull—grips/pushes/pulls slipsheet (used together with blades)51