公开(公告)号：US20030077173A1

公开(公告)日：2003-04-24

申请号：US10277750

申请日：2002-10-23

申请人： SNECMA MOTEURS

发明人： Michel Franchet ,  Daniel Kettler ,  Jean-Pierre Ruis

IPC分类号： F01D007/00

CPC分类号： F01D7/00 ,  B64C11/305 ,  B64C11/38 ,  B64C11/44 ,  F04D29/323 ,  F05D2220/36 ,  F05D2260/74 ,  F05D2260/76 ,  Y02T50/671

摘要： An electrohydraulic device for varying the pitch of the blades of a machine rotor, the blades being mounted on a hub rotated by a drive shaft of the machine, and each blade having a root capable of pivoting about a longitudinal axis of the blade, the drive shaft itself being rotated relative to a stationary structure of the machine, the device comprising firstly a hydraulic actuator whose piston is secured to a control and synchronization ring in which off-center wrist pins are engaged, each fixed in register with one of said blade roots, and having a cylinder closed by a cover that includes a high pressure hydraulic pump feeding hydraulic fluid to both faces of said piston via channels integrated in said cylinder of the actuator, and secondly an electric motor controlled and powered by an electricity generator comprising an inductor secured to said stationary structure of the machine and an armature secured to said drive shaft of the machine.

摘要翻译： 一种电动液压装置，用于改变机器转子的叶片的间距，所述叶片安装在由所述机器的驱动轴旋转的轮毂上，并且每个叶片具有能够围绕所述叶片的纵向轴线枢转的根部，所述驱动装置 轴本身相对于机器的静止结构旋转，该装置首先包括液压致动器，其活塞被固定到控制和同步环，在该环中偏心中心腕销接合，每个固定与所述叶片根部中的一个对准 并且具有由盖封闭的气缸，所述盖包括高压液压泵，其通过集成在所述致动器的所述气缸中的通道将所述活塞的两个面供给到所述活塞的两个面，其次由由发电机控制和供电的电动机，所述发电机包括电感器 固定到机器的所述固定结构上，以及固定在机器的所述驱动轴上的电枢。

公开(公告)号：US20030077183A1

公开(公告)日：2003-04-24

申请号：US10277811

申请日：2002-10-23

申请人： SNECMA MOTEURS

发明人： Michel Franchet ,  Daniel Kettler ,  Pascal Lejeune

IPC分类号： F04B001/12

CPC分类号： F15B15/18 ,  B64C13/504 ,  F15B7/006 ,  F15B7/10 ,  F15B15/17

摘要： An electrohydraulic actuator comprising: a hydraulic actuator comprising a piston secured to a member to be controlled and capable of moving in a cylinder under drive from a hydraulic fluid; a hydraulic pump feeding both faces of the piston with hydraulic fluid via channels integrated in the walls of the cylinder; an electric motor immersed in the hydraulic fluid, and controlled and powered electrically by an electronic control unit, driving the hydraulic pump in rotation; and a hydraulic accumulator for compensating variations in the volume of the hydraulic fluid; the hydraulic actuator, the hydraulic pump, the electric motor, and the hydraulic accumulator having a common axis of symmetry and being mounted in alignment in a common housing that is leaktight to the hydraulic fluid, thereby forming an axially symmetrical self-contained hydraulic assembly.

摘要翻译： 一种电动液压致动器，包括：液压致动器，其包括固定到要被控制的构件的活塞并且能够在来自液压流体的驱动下的气缸中移动; 液压泵通过集成在气缸的壁中的通道向液压流体供给活塞的两个面; 浸入液压流体中的电动机，由电子控制单元进行电力控制驱动，旋转驱动液压泵; 以及用于补偿液压流体体积变化的液压蓄能器; 液压致动器，液压泵，电动马达和液压蓄能器具有共同的对称轴线并且被对准地安装在与液压流体密封的公共壳体中，由此形成轴向对称的独立液压组件。