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发明公开
CN104471151A 用于动力机械的具有铰接膝部的提升臂结构 无效 - 撤回

用于动力机械的具有铰接膝部的提升臂结构
摘要：
本发明公开了一种用于动力机械(100)上的提升臂结构(110；200)。如所公开，提升臂结构包括枢转地附接到主提升臂部分(160；204)的铰接膝部(162；202)。铰接膝部以弯曲角度(208)可枢转地连接到主提升臂部分的远端。弯曲角度可以被连接到主提升臂部分和铰接膝部的长度固定的杆(412)固定，或可通过可操作地连接到主提升臂部分和铰接膝部的致动器(207)调节。在一些应用中，致动器是连接到提升臂部分和铰接膝部的液压缸(220)。液压缸的杆被延伸和缩回以增加或减少铰接膝部的弯曲角度。可以利用来自操作员输入装置(144)的输入调节弯曲角度，或利用预编程弯曲角度参数来机械控制弯曲角度。
摘要（英）：

A lift arm structure (110; 200) for use on a power machine (100) is disclosed. As disclosed, the lift arm structure includes an articulated knee portion (162: 202) pivotally attached to a main lift arm portion (160; 204). The articulated knee portion is pivotally coupled to a distal end of the main lift arm portion at a bend angle (208). The bend angle can be fixed by a fixed length rod (412) connected to the main lift arm portion and the articulated knee portion or adjustable through an actuator (207) operably connected to the main lift arm portion and the articulated knee portion. In some applications, the actuator is a hydraulic cylinder (220) connected to the lift arm portion and the articulated knee portion. A rod of the cylinder is extended and retracted to increase or decrease the bend angle of the articulated knee portion. The bend angle can be adjusted utilizing input from operator input devices (144) or machine controlled utilizing pre-programmed bend angle parameters.

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