Gear Pump - Charge Oil
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| 图 1 | g02831923 |
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(1) 作业机具泵
(2) 静液压泵 (3) 齿轮泵（充油） | |
齿轮泵（充油） (3) 是一个固定排量齿轮泵。 齿轮泵（充油）向风扇马达、静液压系统、作业机具控制阀和作业机具控制阀执行器提供液压油。 如果机器配备有快速连接器，齿轮泵（充油）也将向快速连接器控制装置供油。
齿轮泵（充油） (3) 安装在作业机具泵 (1) 上。 作业机具泵 (1) 安装在静液压泵 (2) 的前段。
在从驱动端看泵时，泵轴沿着顺时针方向旋转。
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| 图 2 | g01359904 |
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典型固定排量齿轮泵 (4) 驱动齿轮 (5) 惰轮 (A) 出口（高压） (B) 进口（低压） | |
齿轮泵将轮齿间隙内的油从进油口 (B) 传送至进油口 (A)。
传动轴转动驱动齿轮 (4)。 驱动齿轮迫使惰轮齿轮 (5) 转动。 当齿轮轮齿分离时，这将会形成部分真空。 机油填满进油口 (B) 内轮齿间的空隙。 齿轮传送的液压油绕过泵的四周供至出油口 (A)。 轮齿与泵壳体相抵，起油封作用。 当出油口 (A) 处的轮齿相互啮合时，轮齿间空隙内的液压油被迫流出。 由于齿轮啮合将填满轮齿间的空隙，液压油将不流回进油口 (B)。
泵提供的机油流量率由轴的旋转率控制。 轴的旋转速率与发动机转速直接相关。
Caterpillar Information System:
R1600H Load Haul Dump Power Train MID 081 - CID 0621 - FMI 04
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