丰田海狮新车型资料中文 HIACE_(Chassis)3.ppt

制动 后制动鼓 双模式后制动鼓 参考 后制动鼓 结构 制动 后制动鼓 正常制动: 领从蹄式 驻车制动: 双领蹄式 制动 后制动鼓 驻车制动时, 双领蹄式的动作 Model Outline Engine Chassis Body Body Electrical Model Outline Engine Chassis Body Body Electrical 锚固销 制动蹄 制动蹄 操作臂 No.2 压杆 反力盘 No.1 压杆 驻车制动拉索 轮缸 前 [左侧] 前 [左侧] 锚固销 制动蹄 制动蹄 操作臂 No.2 压杆 反力盘 No.1 压杆 驻车制动拉索 轮缸 驻车制动 正常制动 制动鼓旋转方向 X Y 1 2 3 5 5 4 6 X Y Z 7 8 At normal braking, the link mechanism is not operate In parking brake, the rear dram brake operates as duo-servo type drum brake Operation at parking brake: 1, Parking brake cable is pulled by applying the parking brake pedal 2, Operation lever is pulled by cable 3, No.1 Strut moves and pushes shoe on drum 4, Reaction plate is pushed by operation lever by using Y as a fulcrum 5, Reaction plate rotates by using X as a fulcrum 6, No.2 Strut is moved by reaction plate and pushes shoe on drum Drum rotates forward or reverse ? Primary shoe is operates as leading shoe 7, Cable is pulled more, reaction plate is pushed by operation lever by using Y as a fulcrum 8, Reaction plate moves and pushes shoe on drum using Z as a fulcrum Drum rotates forward or reverse ? secondary shoe is operates as leading shoe by self servo Dual mode type rear drum brake for all model Model Outline Engine Chassis Body Body Electrical * *