345C Excavator Hydraulic System Caterpillar


Stick Drift Reduction Valve

Usage:

345C BWY

斗杆伸出



图 1g01836936
斗杆沉降阻尼阀 STICK OUT(斗杆伸出)
(1) 油道
(2) 孔口
(3) 油道
(4) 端口
(5) 排油管路
(6) 先导管路
(7) 孔口
(8) 油道
(9) 油道
(10) 阀门
(11) 油道
(12) 弹簧
(13) 弹簧室
(14) 油道
(15) 油道
(16) 滑阀
(17) 斗杆沉降阻尼阀

操纵杆移到 STICK OUT(斗杆伸出) 位置时,从控制阀(斗杆 I)流出的机油流过油道 ( 9),流进斗杆沉降阻尼阀 ( 17)。 机油作用在阀 ( 10) 的左端面。 由于没有机油从先导控制阀流入先导管路 ( 6),滑阀 (16) 维持静止状态。 油道 (3) 经过油道 ( 8)、油道 (15)、油道 ( 14) 和油道 (11) 连接到孔口 ( 2)。

油道 (3) 连接到孔口 ( 2) 时,油道 (9) 的油压克服弹簧 ( 12) 的弹力。 阀 (10) 移向右侧。 压缩弹簧 (12)。 从油道 ( 9) 流出的机油流经孔口 ( 2)。 弹簧室 (13) 中的机油流经油道 ( 3)、 (15)、 (14) 和 ( 11),流入孔口 (2)。 从油道 (9) 和弹簧室 ( 13) 流出的机油流经孔口 ( 2),流入斗杆油缸的连杆端。

斗杆收回



图 2g01459054
斗杆沉降阻尼阀 STICK IN(斗杆进入)
(2) 孔口
(3) 油道
(4) 端口
(5) 排油管路
(6) 先导管路
(7) 孔口
(8) 油道
(9) 油道
(10) 阀门
(11) 油道
(12) 弹簧
(13) 弹簧室
(15) 油道
(16) 滑阀
(17) 斗杆沉降阻尼阀
(18) 油道
(19) 弹簧室
(20) 弹簧

操纵杆移到 STICK IN(斗杆进入) 位置时,从先导控制阀流出的先导油流过先导管路 ( 6)。 然后,机油经过孔口 ( 7) 流入斗杆沉降阻尼阀 ( 17)。 然后,机油将滑阀 ( 16) 向左移动。 弹簧室 ( 13) 中的机油流经油道 ( 3)、油道 (18)、油道 ( 15) 和油道 (8)。 然后,机油流进弹簧腔 ( 19)。 然后,机油流出孔口 ( 4),经过排油管路 ( 5) 流向液压油箱。 弹簧腔 (13) 中的机油压力降低。

从斗杆油缸缸盖端流出的回油经过孔口 ( 2) 流入斗杆沉降阻尼阀 ( 17)。 由于弹簧室 (13 ) 中的油压低,阀 ( 10) 开始向右打开。 现在,回油经过油道 ( 9) 进入控制阀(斗杆 I)。

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