(Solved):   Q1 The mechanism train shown in Figure 1 consists of an assortment of gears and sheaves to ...

 

Q1 The mechanism train shown in Figure 1 consists of an assortment of gears and sheaves to drive gear 9. Sheave 2 rotates at 3000 rpm in the direction shown. The power being transmitted is 5 hp. Do the following. (a) Determine the speed and direction of rotation in gear 9. (5 marks) (b) Select the most suitable chain and sprockets to replace the belt and sheaves 2 and 3. Assume that the finear belt speed is 2500 fpm. What is the length of the chain if the desired center distance is about 18 inches? Evaluate the actual center distance. (10 marks) (c) Find the angular speed of gear 6. Then, propose the numbers of teeth for the spur gears 6 and 7 that give the smallest center distance. (5 marks) d? W? = 2.4 (desired) 18 inches 387 7 3 d3 187 Wz 5 367 Worm 37 R.H. Figure 1 A belt and gear power transmission system. ???? W7 = 3.6