The invention relates to a pitch change mechanism (70) comprising a frame (72), a moving part (102) translatable along a longitudinal axis (X), and a locking device (160). The locking device (160) comprises a support member (162) and a screw-nut system (164), the support member being translatable along a longitudinal axis (X) between an operative position and a locked position. The screw-nut system (164) is formed by a planetary roller screw system (195) comprising a screw (176) translationally secured to the support member (162) and rotatably mounted about the longitudinal axis (X) and a nut (178) secured to the moving part (102). The screw (176) has an abutment surface (186) that is spaced from the frame (72) when the support member (162) is in the operative position and that supports against the frame (72) when the support member (162) is in the locked position.
本发明涉及一种桨距改变机构(70),该桨距改变机构包括框架(72)、能沿纵向轴线(X)平移的移动部件(102)、以及锁定装置(160)。锁定装置(160)包括支撑构件(162)和螺钉螺母系统(164),支撑构件能沿纵向轴线(X)在操作位置和锁定位置之间平移。螺钉螺母系统(164)由行星滚子螺钉系统(195)形成,行星滚子螺钉系统包括螺钉(176)和螺母(178),螺钉可平移地固定到支撑构件(162)并围绕纵向轴线(X)可旋转地安装,该螺母固定到移动部件(102)。螺钉(176)具有邻接表面(186),当支撑构件(162)处于操作位置时,邻接表面与框架(72)分隔开,当支撑构件(162)处于锁定位置时,邻接表面支撑抵靠在框架(72)上。
Pitch changing mechanism with pitch locking device comprising planetary roller screws
具有包括行星滚子螺钉的桨距锁定装置的桨距改变机构
2025-03-11
Patent
Electronic Resource
Chinese
Automotive engineering | 1988
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