Equipment Lowering with Engine Stopped
为了使动臂下降,应将液压锁定操纵装置置于开锁 (UNLOCLED) 位置。 将操纵手柄移到动臂下降 (BOOM LOWER) 位置。 如果蓄能器仍在充灌状态,则动臂会下降。 如果动臂不能下降,表明蓄能器是空的。 使用下列方法降下动臂。
仅可使用手动控制阀手动降下动臂。
- 松开锁紧螺母 (1) 。
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当动臂由一个油缸支承时,动臂的负荷可能使油缸的油压达到动臂下降操纵装置的卸压压力值。 动臂可能会突然降下,导致伤亡事故。 为避免伤亡,降下动臂时确保作业机具底下或周围无人。 在发动机熄火的情况下降下动臂时,所有人员应远离动臂降落区域。 |
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如果液压系统被关闭,操作员仍然可以降下动臂,但动臂下降控制阀不能用于降下动臂。 如果使用了动臂下降控制阀并且关闭了液压系统,动臂有可能会突然降落。 动臂突然下降可能导致人身伤亡。 仅可使用手动控制阀手动降下动臂。 |
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图 1 | g01255597 |
(1) 锁紧螺母 (2) 调整螺钉 |
注: 使用手动控制阀手动降下动臂,以免动臂突然降下。 手动控制阀位于两个动臂油缸之间。
- 逆时针缓慢地转动调整螺钉 (2) ,直到动臂开始降到地面为止。
注: 一旦动臂开始降落,停止转动调整螺钉 (2) 。
- 动臂完全降落到地面后,将调整螺钉 (2) 转回到原来的位置。
- 拧紧锁紧螺母 (1) 。
- 在挖掘机回到维修前,进行必要的修理。
注: 详情请咨询卡特彼勒代理商。
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