R2900G Load Haul Dump Braking System Caterpillar


Pressure Switch (Brake Accumulator Oil)

Usage:

R2900G JLK
动力传动系电子控制模块(动力传动系 ECM)接收制动系统内压力开关发送的输入信号。 如果出现制动系统故障以及蓄能器机油压力损失,则动力传动系 ECM 将接合停车制动器。

报警指示灯



图 1g01139600
(1) 警报指示灯制动蓄能器油压开关

警报指示灯制动蓄能器油压开关位于后机架左侧,制动蓄能器下方。

警报指示灯制动蓄能器油压开关感应制动蓄能器回路中的油压。

在发动机起动时,制动蓄能器机油压力升高。

机油压力增加到压力开关 (1) 的驱动压力时,压力开关关闭。 Caterpillar 监控系统接收油压开关发送的信号。 Caterpillar 监控系统接着将熄灭 Caterpillar 监控系统显示屏上的制动蓄能器机油压力报警指示灯。

如果制动蓄能器机油压力降至压力开关 (1) 的止动压力,则开关将打开,Caterpillar 监控系统显示屏上的制动蓄能器机油压力报警指示灯将点亮。 这将警告操作员制动蓄能器机油压力低。

参考: 有关警报指示灯制动蓄能器油压开关的信息,请参阅系统操作、测试和调整、机器电气系统, "报警指示灯 - 制动蓄能器油压"。

制动器接合



图 2g01139601
(2) 制动器接合用制动蓄能器机油压力开关

制动器接合用制动蓄能器机油压力开关位于后机架左侧,制动蓄能器下方。

制动器接合用制动蓄能器机油压力开关感应制动蓄能器回路中的油压。 制动器接合用制动蓄能器机油压力开关是动力传动系 ECM 的输入。

在发动机起动时,制动蓄能器机油压力升高。 当机油压力达到压力开关 (2) 的启动压力时,开关关闭。 动力传动系 ECM 接收该信号并使停车制动器分离。

如果制动蓄能器机油压力降至压力开关 (1) 的止动压力,则开关将打开,Caterpillar 监控系统显示屏上的制动蓄能器机油压力报警指示灯将点亮。 这将警告操作员制动蓄能器机油压力低。 如果机器继续操作且制动蓄能器液压油压力降至压力开关 (2) 的止动压力,开关将打开。 压力开关 (2) 将会向动力传动系 ECM 发送一个信号。 动力传动系 ECM 将会接合停车制动器。

停车制动器将保持接合状态,直至制动蓄能器机油压力升高至压力开关 (2) 的驱动压力以上为止。 操作员必须将停车制动器开关从接通位置到断开位置循环切换,以分离停车制动器。

参考: 有关制动器接合用制动蓄能器机油压力开关的信息,请参阅系统操作、故障诊断与排除、测试和调整、动力传动系电子控制系统, "开关"。

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