Chapter 24 Braking system 窗月桥大学 TONGII UNIVERSTTY Leading Trailing Shoe Brake >Braking torques the two brake shoes exert on brake drum are different,the braking torque of leading shoe is about 2~2.5 times of trailing shoe. FNI FN2 leading shoe trailing shoe Fst Continue Stop Fs2 Braking Principle and Brake Shoe force situation
Chapter 24 Braking system Braking torques the two brake shoes exert on brake drum are different, the braking torque of leading shoe is about 2~2.5 times of trailing shoe. Leading Trailing Shoe Brake
Chapter 24 Braking system 同©大学 TONGII UNIVERSTTY Features of Leading Trailing Shoe Brake >The structure is simple,it has only one promoting force device; >It has a symmetric distribution,the normal reacting force brake shoe exerts on brake drum is not balanced, it's a non-balanced brake; >When heading back,the functions of leading shoe and trailing shoe exchange,and braking efficiencies are equal; >The stability of braking efficiency is good; >The abrasion of leading shoe is serious
Chapter 24 Braking system Features of Leading Trailing Shoe Brake The structure is simple , it has only one promoting force device; It has a symmetric distribution, the normal reacting force brake shoe exerts on brake drum is not balanced, it’s a non-balanced brake; When heading back, the functions of leading shoe and trailing shoe exchange, and braking efficiencies are equal; The stability of braking efficiency is good; The abrasion of leading shoe is serious
Chapter 24 Braking system 同海大学 Features of Leading Trailing Shoe Brake The Rear Wheel of Santana) >Features:Using poating support,it makes the whole brake shoe has a floating displacement along the supporting surface,it is auto-centered, assure a full contact. A >It can be limitting displacement bar parking brake lever used as a brake wheel cylinder parking brake. brake shoe rear axle brake plate up reset sprig wedge adjusting parking brake dimitting displacement ba pushrod spring brake clearance 习 adjusting spring down reset spring brake drum Floating Support Drum Brake of Santana
Chapter 24 Braking system Floating Support Parking brake lever Features：Using floating support，it makes the whole brake shoe has a floating displacement along the supporting surface, it is auto-centered, assure a full contact. It can be used as a parking brake. Features of Leading Trailing Shoe Brake ( The Rear Wheel of Santana)
Chapter 24 Braking system 月儕大学 TONGII UNIVERSTTY Two Leading Shoe Brake >When brake drum rotates to the forward direction,the two shoes are both leading shoes. >Structural Features:each of two shoes is promoted by a single piston wheel cylinder, supporting pin two set of brake shoes、 wheel cylinder supporting brake drum pin and adjusting cams are arranged central brake shoe symmetrically. >Working Features:When marching,the two shoes are both leading shoes,braking efficiency is promoted,while brake sho backing,the two shoes are both trailing shoes. supporting pin brake wheel cylinder Working Principle of Two Leading Shoe Brake
Chapter 24 Braking system Two Leading Shoe Brake When brake drum rotates to the forward direction, the two shoes are both leading shoes. Structural Features: each of two shoes is promoted by a single piston wheel cylinder, two set of brake shoes 、 wheel cylinder 、 supporting pin and adjusting cams are arranged central symmetrically. Working Features: When marching, the two shoes are both leading shoes, braking efficiency is promoted, while backing, the two shoes are both trailing shoes
Chapter 24 Braking system 同©大学 TONGII UNIVERSTTY Two Leading Shoe Brake brake plate wheel cylinder fuel tube joint 8 @ brake shoe reset spring brake shoe @ friction plate adjusting cam wheel fuel tube joint wheel cylinder cylinder connecting tube C-c B-8 A-A brake shoe djusting cam shaft spring brake shoe supporting pi西 brake lock pin of adjusting cam bar shoe Front wheel brake of BJ2020N
Chapter 24 Braking system Front wheel brake of BJ2020N Two Leading Shoe Brake