论文部分内容阅读
(接上期)(5)直线行走回路当挖掘机陷入坑中或工作在其他特殊工况时,要求挖掘机能边行走边使用工作装置(动臂、斗杆、铲斗、回转),从而实现挖掘机的自救或其他功用。正常行走时,前、后泵分别给左、右履带行走马达供油,其工作原理见图9。正常直线行走时,推动行走脚踏阀,给出直线行走信号(无其他动作),此时左、右行走阀芯向
(Continued) (5) Straight Traveling Circuit When the excavator is trapped in a pit or working in other special conditions, the excavator is required to use the working device (boom, stick, bucket, swivel) while walking to achieve excavation Machine self-help or other functions. During normal walking, the front and rear pumps supply oil to the left and right crawler traveling motors, respectively. The working principle is shown in FIG. 9. When walking in normal straight line, push walking pedal valve to give straight walking signal (no other action), left and right spool