420E, 430E, 432E, 434E, 442E and 444E Backhoe Loaders Hydraulic and Steering System Caterpillar


Bank Valve (Loader)

Usage:

432E BXE



图 1g01388823

先导操纵装载机的阀组

(1) 出口歧管

(2) 辅助控制阀(如有配备)

(3) 装载机倾斜控制阀

(4) 装载机提升控制阀

(5) 进气歧管

(6) 负载信号安全阀

(11) 优先阀

阀组位于右侧机架纵梁上,驾驶室地板下面。 此阀还用于控制可能随机器配备的选装机具。 转向优先阀 (11) 和负载信号安全阀位于进口歧管 (5) 中。




图 2g01293880

(7) 辅助控制装置

(8) 开关

(9) 开关

(10) 操纵手柄

先导管路连接阀段与装载机操纵手柄。 操纵手柄 (10) 控制提升回路、降下操作和铲斗的浮动卡销。 装载机控制还控制铲斗卸载和铲斗倾斜功能。 如果机器配备有辅助回路,辅助控制 (7) 将连接至辅助控制阀。

装载机操纵杆还包含变速箱空档器触发器。 当触发器受到挤压时,触发器分离变速箱。 分离变速箱将允许液压系统获得更多功率。

装载机操纵手柄还包含全轮转向(如有配备)的开关 (8) 和开关 (9) 。

信号网络系统




图 3g01389501

装载机阀和反铲阀之间的信号网络通过单向阀隔开。 单向阀位于装载机阀的进口歧管上。 装载机的最大信号压力由装载机阀进口歧管中的信号安全阀控制。 反铲的最大信号压力由反铲出口歧管中的信号安全阀控制。

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