A positional analysis is performed on the working equipment of hydraulic excavator with swivel bucket arm to get information on its working range and to provide basis for the sensor control.

对斗杆可回转的液压挖掘机工作装置进行了位置分析，可了解其挖掘范围，并为传感器控制提供依据；

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Now WZ25-20 is regarded as an example, its backhoe device consists of moving arm, pole, bucket, guiding organization and rotation mechanism.

把WZ25-20挖掘装载机作为研究样机，其反铲挖掘装置主要由动臂、斗杆、铲斗、导轨机构、回转机构和连接架组成。

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The invention also includes the application of the pin to a connecting mechanism of a digging bucket and a digging arm of a digging machine.

本发明还包括所述销子在挖掘机挖斗与挖掘臂连接机构中的应用。

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