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Question (1) A 2500 -2500 shoff (3) N3 = 100 r. p.m d: 250 Shaflor 250 Driving Motor IP: 75 + + Speed: 1600 rpm shaft(2),Speed 400 r.p. A (20 Marks) Sectional at AA Figure shows the layout of the driving unit for mechanical press. You ore required to: 1- Moke a complete design calculation for the belts of this drive and the pulleys for the second reduction 2. Determine the diameter of the shaft (2) according to the normal stress theory and maximum shear stress theory, design the keys on this shoft. (20 Mark 3- Make a complete construction drawing for sthoff12) and its (35 Marks components in two views at least . 4. Make a complete construction drawing for pullyes () and (3) (15 Marts) the belt tensioning device for the (15 Marks) 5. Design and draw driving unit.
Question (11) Fig(2) Show's the layout drowing of the driving wait for a water pump with the following specifications: * Power of the driving motor = 25 HP Speed of the driving motor = 1400 Tip.mn *Speed of the driven shaft m = 70078.m * Diameter of the driving pulley = 250 mm Centre distence between the motor shaft and the driven shalt11) = 2500 mm You are required to: 1- Find the diameters of the driving motor shaft and the driven sholt (1) 2. Design the coupling 3. Design the belt drive and driven pulley 4- Design the bolts fizing the journal bearing on the base S-Design the belt tensioning device 6. Make o complete constructional drowing showing the driving, driven pulleys and its fixations , journal bearing, coupling and belt tensioning device. > .
Water pump Journal bearings Coupling 作品 Pulley Shaft) Speed - 700 rpm Bolts 4 OFF Shah 平 250- Fia(2) Driving motor 1P = 25 speed: Hoo ripom