325D and 329D Excavators Hydraulic System Caterpillar


Solenoid Valve (Fine Swing) - If Equipped

Usage:

325D L A3R



图 1g01130113

回转马达一侧

(1) 壳体

(2) 回转马达

(3) 反作用阀

(4) 反作用阀

(35) 回转微调电磁阀




图 2g01761734

回转微调电磁阀

(1) 壳体

(8) 油道

(9) 油道

(10) 油道

(31) 油道

(35) 电磁阀

(36) 回转微调阀

(37) 油道

(38) 油道

(39) 滑阀

(40) 弹簧

(41) 节流孔

(42) 节流孔




图 3g01816116

回转微调控制开关位于右侧控制面板上。

安装回转微调控制装置的目的是确保精确的回转动作,而使冲击载荷最小。 这通过平衡油道 (8) 和 (10) 中的机油压力来实现。

当回转微调电磁阀 (35) 断开时,滑阀 (39) 处于 NEUTRAL(空档)位置。 滑阀 (39) 位于阀 (36) 中。 在 NEUTRAL(空档)位置,油道 (37) 和 (38) 形成闭合连接。 在此位置,回转回路以正常方式工作。

当回转微调控制开关 ON(接通)时,电磁阀 (35) 接通。 滑阀 (39) 顶着弹簧 (40) 的弹力向下移动。 当滑阀在此位置时,油道 (8) 通过油道 (37) 和 (38) 向油道 (10) 开放。 流速由节流孔 (41) 和 (42) 控制。 节流孔 (41) 和 (42) 位于缸体 (1) 上。

由于左右回转回路现在已相互连接,因此出口的部分机油可流向进口侧。 通过此连接,回转回路的操作更加精确。

注: 当回转微调控制开关 ON(接通)时,回转制动器 OFF(断开)。

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