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2. 发明申请

WO1987000815A1 CONTROL SYSTEM FOR PROPELLER WITH CONTROLLABLE PITCH 审中-公开
标题翻译：螺旋桨控制系统
公开(公告)号：WO1987000815A1
公开(公告)日：1987-02-12
申请号：PCT/SE1986000348
申请日：1986-08-01
申请人： KAMEWA AB
发明人： KAMEWA AB , ANDERSSON, Sven-Ola
IPC分类号： B63H03/08
CPC分类号： B63H3/082 , B63H2003/088
摘要： An actuating system for a controllable pitch propeller comprises a hydraulic servomotor (4, 5) arranged in the propeller hub (2) and being connected mechanically to the propeller blades (3). Pressure medium is delivered to the servomotor (4, 5), under the control of a control valve (7), from a pressure-medium source (33), which is connected to a stationary pressure-medium chamber (15) which embraces a rotatable shaft (1) connected to the propeller and which is sealed against the outer surface of the shaft and communicates, via a radial pressure-medium channel (19, 20, 21) in said shaft, with an axial pressure-medium channel (10) located in the shaft and extending to the hydraulic servomotor (4, 5). The system further comprises an additional stationary pressure-medium chamber (16) which embraces the shaft and seals against the outer surfaces thereof and which, via an additional radial pressure-medium channel (24, 25, 26) in the shaft communicates with the axial pressure-medium channel (10) in the shaft. The system also comprises an additional pressure-medium source (34), and each of the two pressure-medium sources (33, 34) can be connected alternatively to any one of the two pressure-medium chambers (15, 16), whereby the actuating system can be operated in a substantially unchanged manner irrespective of faults in any of the two pressure-medium sources (33, 34) and irrespective of faults in any of the high-pressure seals (17, 18) of the two pressure-medium chambers (15, 16).
摘要翻译：用于可调俯仰螺旋桨的致动系统包括布置在螺旋桨毂（2）中并且机械地连接到螺旋桨叶（3）的液压伺服马达（4,5）。压力介质在压力介质源（33）的控制阀（7）的控制下被输送到伺服电动机（4,5），所述压力介质源连接到固定压力介质室（15）旋转轴（1）连接到螺旋桨并且被密封抵靠轴的外表面，并经由所述轴中的径向压力介质通道（19,20,21）与轴向压力介质通道（10 ），并延伸到液压伺服电动机（4,5）。该系统还包括附加的固定压力介质室（16），其包围轴并且抵靠其外表面密封，并且通过轴中的附加径向压力介质通道（24,25,26）与轴向连通压力介质通道（10）在轴上。该系统还包括附加的压力 - 介质源（34），并且两个压力 - 介质源（33,34）中的每一个可以交替地连接到两个压力 - 介质室（15,16）中的任何一个，由此致动系统可以以基本上不变的方式操作，而不管两个压力介质源（33,34）中的任何一个的故障如何，并且与两个压力介质的任何高压密封件（17,18）中的故障无关。室（15,16）。

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