Machines and Devices of Logistics - Thematics

1. Machines and Devices of Logistics - Thematics -----------7------------------- Forklifts II. --------------------8---------- Automated guided vehicles with presentation in the labor -----------------9--------------- Overhead cranes Overhead conveyors and monorail systems -----------------10------------------ Test 2 ---------------11---------------------- Capacity analysis of complex materials handling systems -------------12--------------------- Modeling possibilities of manufacturing logistic processes Graphs Petri-nets -------------13--------------------- SysML Modeling language Simulation software (ált) ----------------14----------------- Test 3 -------------15-17--------------- Building and analyzing material flow in logistic systems (capacity, stocks, bottlenecks etc. using Simul8) -----------1------------------- Classification of the transported goods and main classes of materials handling machines Machines for handling bulk materials Belt conveyors -----------2------------------- Bucket elevators Screw conveyors Roller conveyors -----------3------------------- Presentation of the conveyors at the department Practice for the test 1 -----------4------------------- Test 1 -----------5------------------- Machines for handling unit loads Containers for material handling -----------6------------------- Types of unit loads inside manufacturing systems Forklifts I.

2. Definition of materials handling Organized motion of goods and materials which covers shorter distances and the state of the transported object doesn’t change. In a typical factory, MH accounts for 24% of all employees, 55% of the space, and 87% of the production time. It accounts for between 15% to 70% of the cost of a product. Relation of materials handling and logistics Requirements on timing and relations Materials handling Logistics Provision of materials’ transport services

3. Classification of transported goods Transported materials Piece-goods Bulk materials In natural form In loading units Gases Liquids Solid bulk materials

4. Materials-handling machines Classification of materials-handling machines Continuous operating materials handling machines Discontinuous operating materials handling machines Materials-handling machines Lifting machines Auxiliary devices Transporting machines Loading machines

5. Materials-handling machines Conveyors Classification of materials-handling machines Chute conveyor Wheel conveyor Roller conveyor Chain conveyor Slat conveyor Flat belt conveyor Magnetic belt conveyor Troughed belt conveyor Bucket elevator Vibrating conveyor Other equipment Cranes Industrial trucks Jib crane Bridge crane Gantry crane Stacker crane Tower crane Mobile crane Hand truck Pallet jack Walkie stacker Counterbalanced lift truck Reach stacker Turret truck Order picker Sideloader Tractor-trailer Automatic guided vehicle (AGV) Screw conveyor Pneumatic conveyor Vertical conveyor Cart-on-track conveyor Tow conveyor Trolley conveyor Power-and-free conveyor Monorail Sortation conveyor

6. Materials handling related features of solid bulk materials Solid bulk materials: • typically homogeneous materials • transport and loading in greater masses, without packaging Materials handling related features of solid bulk materials: • grain size (average, max, min) • grain-size distribution • bulk-density • friction coefficient on solid surfaces • moisture content • cohesion • friability (fragile) • flowability • abrasiveness • corrosiveness • temperature • frozen • health-threatening

7. Materials handling related features of solid bulk materials Examples : Ashes: abrasive when dry, corrosive when wet Charcoal: dusty (explosive dusts) Cement: entrains air, compacts in storage, must not contact with moisture Grass seed: gentle handling Sulphur: danger from static sparks, risk of ignition, corrosive when wet Iron ore: may be in large fragments Wheat: hygienic conditions

8. Grain-size distribution diagram Materials handling related features of solid bulk materials

9. Choice of equipment Materials handling machines for handling solid bulk materials 1. Type of conveyor or elevator 2. Material transfer 3. Profile 4. Material properties Effect of the height difference for the choice of the equipment

10. Materials handling machines for handling solid bulk materials

11. General features Belt conveyors

12. Components and construction Belt conveyors

13. Typical arrangements Belt conveyors

14. Typical arrangements Belt conveyors

15. Calculating capacity for a belt conveyor Belt conveyors Capacity reduction coeff. Inclination coeff. Loading coeff.

16. Driving of a belt conveyor Belt conveyors Max. circumferential force at the drum Required tensioning force Max. belt force Possibilities of increasing arc of contact

17. Comparison of tensioning force Belt conveyors Head side driven Tail side driven

18. Dual-drum driving system Belt conveyors Dual-drum driving system Ratio of the required torques at the two drums:

19. Calculation of the required force Belt conveyors Length-dependant resistance Length depending drum resistance factor Deflector plank resistance Belt cleaner resistance 2-5 N/cm Material acceleration (feeding) resistance Resistance of a discharge trolley Lifting resistance Resistance of forward tilted idlers Number of forward tilted idlers

20. Belt feeding Speed vector of the material loaded onto the conveyor  conveyor speed Belt conveyors feeding belt Tips for feeding:

21. Belt feeding Belt conveyors

22. Discharge from the belt Belt conveyors Discharge over the head pulley Discharge from fixed tippers Discharge from moveable tippers Discharge by ploughing

23. Construction Tube belt conveyors Typical curve radius for normal belt conveyor Typical curve radius for tube conveyor source: http://www.beumergroup.com