长臂挖掘机

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长臂挖掘机是一种特殊的挖掘机，其挖掘臂特别长，可以用于更广泛的挖掘作业。这种挖掘机适用于各种特殊场合，如河道疏浚、湖泊清洁、水库维护等特殊工况。长臂挖掘机分为固定式、滑移式、伸缩式加长臂等多种类型，其中伸缩式加长臂能实现较大范围的作业。

Long arm excavator is a special type of excavator, with a particularly long excavation arm that can be used for a wider range of excavation operations. This excavator is suitable for various special occasions, such as river dredging, lake cleaning, reservoir maintenance, and other special working conditions. Long arm excavators are divided into various types, such as fixed, sliding, and telescopic extension arms, among which the telescopic extension arm can achieve a large range of operations.

长臂挖掘机的液压抓斗适用于煤炭、矿粉、沙石等散料的挖掘和装载。这种抓斗具有强的承载能力，通常由液压油缸、斗、连接立柱、斗耳板、斗耳套等零配件组成。此外，液压油缸也是关键的驱动部件。

The hydraulic grab of the long arm excavator is suitable for excavating and loading loose materials such as coal, mineral powder, sand and gravel. This type of grab has strong load-bearing capacity and is usually composed of hydraulic cylinders, buckets, connecting columns, bucket ear plates, bucket ear sleeves, and other spare parts. In addition, hydraulic cylinders are also key driving components.

在操作长臂挖掘机时，需要注意一些关键点。例如，在更换加长的动臂、斗杆时，需要成为加长臂型挖掘机，这样可以实现较大范围的作业。另外，加长臂挖掘机用于水下挖掘时，为保证较好的视野，通常在斗杆上配置水下摄像头。

When operating a long arm excavator, it is necessary to pay attention to some key points. For example, when replacing an extended boom or stick, it is necessary to become an extended arm excavator, which can achieve a larger range of operations. In addition, when an extended arm excavator is used for underwater excavation, in order to ensure a good view, an underwater camera is usually installed on the bucket handle.

总的来说，长臂挖掘机是一种、灵活的挖掘机，适用于各种特殊场合。在操作这种挖掘机时，需要具备一定的技能和经验，以确保安全和的作业。

Overall, the long arm excavator is an efficient and flexible excavator suitable for various special occasions. When operating this excavator, it is necessary to possess certain skills and experience to ensure safe and efficient operation.