992K Wheel Loader Electrohydraulic System Caterpillar


General Information

Usage:

992K H4C



图 1g01439752

部件位置

(1) 机具液压泵

(2) 先导泵

(3) 左右泵控制电磁阀

(4) 先导安全阀

(5) 机具电子控制模块

(6) 电动液压控制

(7) 再生阀

(8) 倾斜油缸

(9) 液压油箱

(10) 主控制阀

(11) 提升连杆位置传感器

(12) 提升油缸

(13) 倾斜连杆位置传感器

(A) 电子系统

(B) 先导液压系统

(C) 主液压系统

(D) 先导液压系统 (B) 和主液压系统 (C) 公用

电动液压系统正以电动方式控制先导操作系统。 先导系统控制主控制阀的功能。 先导系统包括电子系统和液压系统两部分。

电子系统由以下部件组成: 机具电子控制模块 (5), 电子液压控制 (6), 提升连杆位置传感器 (11), 倾斜连杆位置传感器 (13) 和 左右泵控制电磁阀 (3) 。 另外,主控制阀 (10) 的两个部件也是电子系统的一部分:先导控制阀电磁阀 和 电磁阀(液压锁定)。 电子液压控制 (6) 包括以下部件:提升操纵杆, 倾斜操纵杆, 提升操纵杆位置传感器, 倾斜操纵杆位置传感器, 止动线圈(后倾), 止动线圈(下降), 止动线圈(提升) 和 开关(液压锁定)。

先导液压系统包括先导泵 (2) 和先导安全阀 (4) 。 另外,主控制阀 (10) 的两个部件也是液压系统的一部分:先导控制执行器 和 电磁阀(液压锁定)。

主液压系统包括以下部件: 机具液压泵 (1), 主控制阀 (10), 再生阀 (7), 倾斜油缸 (8) 和 提升油缸 (12) 。

机具液压油箱 (9) 是先导液压系统和主液压系统共用的。

电子控制系统部件




图 2g01439802

机具电子控制系统结构图

(1) 机具电子控制模块(ECM)

(2) Cat 数据链路

(3) 倾斜操纵杆位置传感器

(4) 提升操纵杆位置传感器

(5) 开关(液压锁定)

(6) 限位设置开关(倾斜)

(7) 限位设置开关(提升)

(8) 提升连杆位置传感器

(9) 倾斜连杆位置传感器

(10) 泵压力(右)

(11) 泵压力(中)

(12) 机具先导压力传感器

(13) 电磁阀(液压锁定)

(14) 电磁阀(中央泵控制)

(15) 电磁阀(右泵控制 )

(16) 再生阀

(17) 浮动阀(右)

(18) 浮动阀(左)

(19) 双安全阀

(20) 电磁阀(后倾 1)

(21) 电磁阀(后倾 2)

(22) 电磁阀(卸载 1)

(23) 电磁阀(卸载 2)

(24) 电磁阀(提升 1)

(25) 电磁阀(提升 2)

(26) 电磁阀(下降 1)

(27) 电磁阀(下降 2)

(28) 止动线圈(提升)

(29) 止动线圈(下降)

(30) 止动线圈(后倾)

机具电子控制模块(ECM)接收各传感器及各开关发出的输入信号。 机具 ECM 处理输入,相应输出供给电磁阀。 机具 ECM 也通过 CAT 数据链路与其他电子控制系统通信。

Caterpillar Information System:

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