1) The document discusses different types of brakes including mechanical, electrical, and hydraulic brakes. 2) It describes band brakes which use two brake blocks to apply force on both sides of a wheel, single block/shoe brakes, and internal expanding shoe brakes which use pivoted shoes pushed outwards by a cam to brake against a drum. 3) Disc brakes are also summarized, replacing the drum with a circular disc and using a caliper and friction pads on either side to retard the disc's motion.

1. Subject : TOM (03109301)
Name: Alpesh C patel
ENRL No : 160303109749
Class: 5A6
TYPES OF BRAKES
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2.  A brake is a mechanical device which produces
frictional resistance against moving machine member, order to
slow down the motion of machine.
 In the process of performing this function, the brake
absorbs kinetic energy of moving member and the brake
absorbs potential energy of lowering member.
 The energy absorbed by brakes is released to
 surrounding in form of heat
Brakes

3. Types of brakes
Brakes:
1)Mechanical
2) Electrical
3)Hydraulick
Block brake
Band brake
Internal or external
expanding shoe
brake

4. Band brake
 It consist of two brake blocks at the opposite ends of the wheel.
 These shoes apply force to both the sides of wheel and
reduces the Unbalanced force on the shaft.
 This spring pull the upper end of the brake arms
together and Brake is applied.
 When a force is applied to the bell crank level , the
spring is Compressed and the brake is released.
 This brake is used in electric cranes. The bicycle brake is example of
double block brake

5. Single block or shoe brake:

6. Band brake

7. Internal expanding shoe brake
 An internal expanding shoe brake consists of two shoes.
 The outer surface of the shoes are covered with friction material.
 Each shoe is pivoted at one end about a fixed fulcrum and other
end rests against cam.
 When the cam is operated, the shoe are pushed
outwards against brake drum.
 The friction between the shoes and the drum produces the braking
torque.
 This type of brake is commonly used in motor cars and light trucks.

8. Internal expanding shoe brake

9. Disc brake
 Disc brakes are different from drum brakes in that the drum is replaced by
a circular metal disc and the brake shoe are replaced by a aliper which
supports a pair of friction pads , one on each side of the disc.
 These pads are forced inward by the operating
force and also retard the disc.

10. Disc brake