伸缩臂节

伸缩臂节是臂架组件中精密设计的嵌套结构件，可相对滑动以伸缩臂架长度。它们由多个中空箱形或圆柱形截面组成，具有重叠接口，通过滚轮或衬套导向，并由液压缸或机械驱动装置驱动。这些部件在保持结构完整性的同时，允许受控的直线运动，使起重机、高空作业平台和挖掘机等设备能够实现可变的工作半径和高度，并具有精确定位能力。

伸缩臂节基于嵌套式直线延伸原理工作，多个中空截面沿导向路径在彼此内部滑动。液压缸或机械驱动装置施加力以伸出或缩回各节，而锁定机构（如销或液压锁）将其固定在所需位置。重叠设计确保了整个伸缩范围内的结构连续性和载荷传递，导向系统则减少摩擦并保持对中。

Telescoping sections operate on the principle of nested linear extension, where multiple hollow sections slide within one another along guided paths. Hydraulic cylinders or mechanical drives apply force to extend or retract the sections, while locking mechanisms (such as pins or hydraulic locks) secure them at desired positions. The overlapping design ensures structural continuity and load transfer throughout the extension range, with guidance systems minimizing friction and maintaining alignment.