| 摘要 |
<p>A hydraulic system (56) includes a first pump (66), a first actuator (26) fluidly connected to the first pump (66) via a first closed-loop circuit (58), a second pump (66), and a second actuator (42L) fluidly connected to the second pump (66) via a second closed- loop circuit (59). The system (56) also includes a third pump (66), a third actuator (42R) fluidly connected to the third pump (66) via a third closed-loop circuit (60), a fourth pump (66), and a fourth actuator (32) fluidly connected to the fourth pump (66) via a fourth closed-loop circuit (61). The system (56) further includes a first combining valve (107B) configured to combine fluid from the first (58) and second (59) circuits, a second combining valve (107C) configured to combine fluid from the second (59) and third (60) circuits, a third combining valve (107D) configured to combine fluid from the third (60) and fourth circuits (61). The system also includes a fourth combining valve (107A) configured to combine fluid from the first (58) and fourth (61) circuits.</p> |
