液压挖掘机的反铲切削有:铲斗切削、斗杆动臂提拉切削和铲斗、动臂、斗杆三者相互配合的综合切削。1.铲斗切削铲斗切削过程是先将铲斗的开切位置放在铲斗的回转中心B和斗齿尖A连线与地面约成25°～40°夹角的位置(图1),然后动臂下压,转铲斗即可切削。这种方法一般适用于松软土壤;较硬土壤则不易挖满斗。 The backhoe cutting of the hydraulic excavator includes cutting of the bucket, lifting and pulling of the boom arm, and comprehensive cutting of the bucket, the boom, and the arm. 1. Bucket The cutting process of the bucket is to place the bucket open position at an angle of 25° to 40° between the bucket’s center of rotation B and the tooth tip A connection (Figure 1). , and then press the boom down and turn the bucket to cut it. This method is generally suitable for soft soil; harder soil is not easy to fully bucket.