Oil Cooler (Brake, Hydraulic Fan, Steering)
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图 1 | g01209118 |
(1) 转向系统和风扇驱动系统油冷却器 (2) 后制动器油冷却器 |
转向系统和风扇驱动系统油冷却器位于机器右侧。 机油冷却器 (1) 用于转向系统和风扇驱动系统。 机油冷却器 (2) 用于冷却后制动器使用的机油。
转向系统和风扇驱动系统所用机油流入机油冷却器。 机油从机油冷却器流入转向液压油箱。
机油冷却器 (1) 和机油冷却器 (2) 由发动机冷却液冷却。 发动机冷却液从水泵流经机油冷却器。 接着,发动机冷却液流回发动机缸体。
后制动器由机油进行冷却。 冷却机油来自举倾机构和制动器冷却控制阀。 在某些情况下,冷却机油也来自位于液压油箱内部的前制动器冷却泵段。
举倾机构齿轮泵将油输送到控制阀。 当举倾机构和制动器冷却控制阀位于 HOLD(保持)位置或 FLOAT(浮动)位置时,机油经过控制阀流向后制动器油冷却器 (2) 。
当后制动器冷却泵段被驱动时,机油经过滤网流入后制动器油冷却器 (2) 。 请参阅系统操作, "机器电子控制模块(制动 / 冷却)"以了解有关驱动马达的活塞泵的控制信息。
机油经过后制动器油冷却器 (2) 之后,会流向制动器冷却机油液压滤清器。 接着机油流至后制动器。 机油流到后制动器之后,会流回液压油箱。
后制动器冷却机油安全阀位于液压油箱内。 机油冷却器安全阀位于后制动器冷却泵段的出口管路上。 安全阀可防止来自齿轮泵的压力过高。 当机油压力超过卸压时,安全阀打开。
制动器冷却机油冷却器安全阀位于举倾机构和制动器冷却控制阀上。 安全阀可防止来自举倾机构齿轮泵的压力过高。 当机油压力超过卸压时,安全阀打开。
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