325D and 329D Excavators Hydraulic System Caterpillar


Accumulator (Pilot)

Usage:

325D L A3R


图 1g00681745
(5) 储液罐
(16) 管路(从先导油歧管流出的先导油)
(17) 安装件

储液罐储存用于主控制阀的先导压力油。 在一些操作过程中。由于先导泵供应的流量不足,先导系统需要更多的机油。 当先导泵流量不充足时,储液罐 ( 5) 将向先导系统提供先导压力油。 向先导系统供应的先导油不充足,可能是由以下两个原因引起的:

  • 当发动机停机并且至主控制阀的供油停止时,机具降下。

  • 组合作业


图 2g01338389
储液罐
(5) 储液罐
(16) 管路(从先导油歧管流至储液罐安装件的先导油)
(17) 安装件
(18) 油道
(19) 进油口
(20) 压力油室
(21) 导管
(22) 蓄能囊
(23) 气室
(24) 油道
(25) 油道
(26) 油道
(27) 进油口(先导油歧管)
(28) 油道
(29) 单向阀

先导油从先导滤清器流入先导油歧管的进油口 ( 27)。 先导油流过油道 ( 28) 并打开单向阀 (29 )。 此时先导油经过油道 ( 24) 和 (26) 流向先导控制阀(操纵手柄和行驶操纵杆/踏板)。

先导油还经过油道 ( 25) 和管路 (16) 流向储液罐的安装件。 此时先导油经过油道 ( 18) 和进口 (19) 流入压力油室 ( 20)。 先导油作用在蓄能囊 ( 22) 上,气室 (23) 中的氮气受到压缩。 单向阀 (29) 防止储存在储液罐中的机油反向流动。 储存的油仅用于操作主控制阀阀杆。

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