Question

(a) Describe and explain the mechanism of differential gear (b) Two parallel shatts, about 600 cm apart are to be connected by pur gears. One shaft is to run at 720 rpm and the other at 240 rpm. Calculate the number of teeth and pitch circle diameters on both gears if the circular pitch is to be 25 cm. Compute the exact distance between the two shafts Useful.cuations P4 d / velocity ratio=m= 0 pa 1G NG IP do No de Ne

Answer 1

Differential gear mechanism:

The Differential gear mechanism is used in automobile to transmit equal power to a pair of wheels, even when they follows different length of paths.

In order to maintain traction, two-wheel drive vehicles has to rotate wheels at different speeds while turning around a corner. Without a differential gear system, the inner wheel has to rotate faster compared to the outer wheel as the path traveled by the inner wheel is shorter. This results in intense loading on the transmission.

The Differential solves this issue by allowing the outer wheels (left wheel is outer wheel for right turn) to rotate more as it has more distance to cover compared to inner wheel. The Differential acts similar to a solid axle while moving in a straight line.

Date : solution: Griven data: cm - 600 N = 720 8pm N2 =240 rpm Pc = 25 cm ER =) d = Pitch circle dicuneter sol 22 dz N. 720 23 240 2, di N2 dz= 3d, a five - center clistance between shafts, X= 0. 5 (dit dz) 600 0.5 (dit 3d, ) =600 LEND 4 d = 1200 CP cm id, = 300 ron and da = 900 am wood circular pitch Pci = Pcz = 25 cm 25 - od Tidz Tz 리 22 = TX 900 .. 2, - & T X 300 25 21= = 37.699 25 2. Z2 = 13.097

$1592228356937_IMG-2926.png$