Swivel
回转接头是允许电气和液压装置从机器上部穿过至机器下部的部件。 此部件允许 360 度旋转。
电动回转接头
电动回转接头允许机器电子设备进行 360 度旋转操作。 回转接头负责下部系统电气连接。
有两个接头穿过电动回转接头并具备 19 种功能。 导线进入回转接头顶部，通过金属环和金属刷连接至底部。 随着机器的转动，金属刷沿着金属环滑动建立电气连接。
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| 图 1 | g03304739 |
电动回转接头 | |
液压回转接头
液压回转接头允许机器液压进行 360 度旋转操作。 回转接头负责操作稳定器系统的液压油。
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| 图 2 | g03300018 |
从下方往上望的回转接头 (1) 先导油 (2) 回路 (3) 液压压力 (4) 液压压力 (5) 先导油 (6) 回路 | |
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| 图 3 | g03300003 |
通过液压回转接头的机油流（仅限有源端口） (1) 先导油 (2) 回路 (3) 液压压力 (4) 液压压力 (5) 回转接头 (6) 稳定器 | |
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