液压动力转向系统培训课件.ppt

液压动力转向系统 液压动力转向系统 转向系统布置图 Steering System in vehicle 液压动力转向器总成构造简介 动力转向器总成。 液压动力转向器主要性能参数 Principle of EPHS Systems Motor-Pump-Unit: Gen II MPU: Changes from Gen II to Gen III * Reservoir 贮油罐 Return Hose 回油管 Steering Gear 转向器总成 Steering Pump 油泵 Pressure Hose 进油管 齿条 转向控制阀总成 内球头 供油管 小齿轮 转向轴 防尘罩 阀体 油缸 液压动力转向器总成工作原理 齿条 油泵 转向控制阀总成 小齿轮 总成性能曲线 输入和输出特性曲线 Input and output characteristics 液压动力转向器主要性能曲线 kg/cm2 输入油压 Torque:kg.f 扭矩 Curve Characteristics 20 10 50 40±5Kgf.cm 26±4Kgf.cm ? 规范和主要尺寸 30 齿数 Number of teeth 20° 压力角 Pressure angle 1.75 模数 Module 齿条 Rack 24° 螺旋角 Helical angle 8 齿数 Number of teeth 16° 螺旋角 Helical angle 3.19 旋转圈数 Revolution 45.74 传动比 Gear ratio 146±1(72 ± 0.5×2) 行程 Rack stroke Φ25/ Φ24(Teeth area) 齿条直径 Rack Diameter(mm) Φ45 油缸内径 Cylinder inner diameter(mm) 规范 Specification 右旋 Right 旋向 Helical direction 20° 压力角 Pressure angle 1.75 模数 Module 小齿轮 Pinion ① ② ③ ④ ⑤ ⑥ ⑦ ⑧ ⑨ ⑩ This document is confidential and proprietary, Its contents is not to be provided to anyone with permission of TRW. 290 ± 1.0 290 ± 1.0 ⑤ Length IBJ Center to End of Ball Tie Rod(mm) 39.6 Max. 39.6 Max. ⑩ Length Rack Center to Housing Yoke End(mm) 42 42 ⑨ Length Rack Center to Housing Lower End(mm) 119 119 ⑧ Length Rack Center to Housing Upper End(mm) 196.5 196.5 ⑦ Length Rack Center to Valve End(mm) 78 ± 0.5 78 ± 0.5 ⑥ Length OBJ Center to End of OTR Socket(mm) (338) 652 ± 1.0 (1328) 20 TRW Proposal (338) 652 ± 1.0 (1328) 20 Benchmark part ① Off set angle (?) ④ Length IBJ Center to OBJ Center(mm) ③ Length IBJ Center to IBJ Center(mm) ② Length OBJ Center to OBJ Center(mm) Items Sleeve Input shaft Torsion Bar L.H Cylinder Pump R.H Cylinder RIGHT direction Reserve Tank Torsion Bar Input shaft Pinion shaft Sleeve Valve ass’y Balance Pin Drive Pin Valve Mechanism(8 Land)