Chapter 6 Brake System Section2 Brake 1.Brake Types Brakes have many types.They can be divided into the wheel brakes and parking brakes according to their application.According to their structures,wheel brakes can be divided into band brakes,drum brakes and disc brakes;Parking brakes can be divided into shoe disc brakes and drum parking brakes. 2.Drum Brake 2.1 Wheel Cylinder Brake 2.1.1 Simple non-balancing brake N1N2, F1F2, The braking torques of left and right shoes are not equal.The torque of tight shoe is 2 to 2.5 times than that of the loose shoe. 机械电子工程学 Automobile and Tractor Northwest A&F UniversityAutomobile and Tractor Northwest A&F University Chapter 6 Brake System 1. Brake Types Brakes have many types. They can be divided into the wheel brakes and parking brakes according to their application. According to their structures, wheel brakes can be divided into band brakes, drum brakes and disc brakes; Parking brakes can be divided into shoe disc brakes and drum parking brakes. 2. Drum Brake 2.1 Wheel Cylinder Brake 2.1.1 Simple non-balancing brake N1≠N2, F1≠F2, The braking torques of left and right shoes are not equal. The torque of tight shoe is 2 to 2.5 times than that of the loose shoe. Section 2 Brake