公开(公告)号：US5020322A

公开(公告)日：1991-06-04

申请号：US268862

申请日：1988-11-08

申请人： Robert A. Schwarz

发明人： Robert A. Schwarz

IPC分类号： F15B20/00

CPC分类号： F15B20/004

摘要： A blow-back circuit (10) comprising an accumulator (23) to build up system pressure during normal system operation and an accumulator shut-off valve (13) which prevents dissipation of the accumulator pressure during normal operation. Pressurized fluid is supplied to a fluid motor (11) through a direct drive valve (12). A directional control valve (28) is associated with a switching valve (34) and a stop mechanism (31) which mechanically feedbacks the position of a control surface to be blown back during an emergency. When the control surface is in or blown back to the neutral position, the stop mechanism (31) feeds that data back to the directional control valve (28) so that accumulator pressure will not be further delivered to the fluid motor (11) and a brake (14) will be allowed to prevent further movement of the control surface away from the neutral position. As a result, the control surface is moved to its neutral position with great accuracy and no flutter.

摘要翻译： 一种回吹回路（10），包括在正常系统操作期间建立系统压力的蓄能器（23）和防止在正常操作期间累积器压力消散的蓄能器截止阀（13）。 加压流体通过直接驱动阀（12）供给流体马达（11）。 方向控制阀（28）与切换阀（34）和止动机构（31）相关联，其在紧急情况下机械地反馈要被吹回的控制表面的位置。 当控制面处于或被吹回中立位置时，停止机构31将该数据送回方向控制阀28，使得蓄能器压力不会进一步输送到流体马达11和 制动器（14）将被允许防止控制表面进一步移动离开中立位置。 结果，控制表面以很高的精度移动到其中立位置并且没有颤动。

公开(公告)号：US5002521A

公开(公告)日：1991-03-26

申请号：US280954

申请日：1988-12-07

申请人： Robert A. Schwarz ,  David J. Linton

发明人： Robert A. Schwarz ,  David J. Linton

IPC分类号： B64C13/42 ,  F16H37/06

CPC分类号： F16H37/065 ,  B64C13/42

摘要： The problem of providing a dual redundant load path which is not vulnerable to a single point failure at the output of a motor shaft is solved by a dual redundant load path motor system, particularly for use in aircraft actuation systems. A motor (22) has a rotor (34) extending entirely therethrough to define first and second output drives (38 and 40) at opposite ends (34a and 34b) of the rotor. First and second output shafts (46 and 48) are coupled to the opposite ends of the rotor. The output shafts are located at a common end of the motor, and one of the output shafts (48) is coupled through a connecting shaft (68) to the end of the rotor at the opposite end of the motor. The connecting shaft runs generally parallel to the rotor.

摘要翻译： 在电动机轴的输出端提供不易受单点故障影响的双重冗余负载路径的问题通过双冗余负载路径电动机系统来解决，特别是用于飞行器致动系统中。 电动机（22）具有完全贯穿其中的转子（34），以在转子的相对端（34a和34b）处限定第一和第二输出驱动器（38和40）。 第一和第二输出轴（46和48）联接到转子的相对端。 输出轴位于电动机的公共端，并且输出轴（48）中的一个通过连接轴（68）联接到电动机的另一端处的转子的端部。 连接轴大致平行于转子运行。

公开(公告)号：US4991800A

公开(公告)日：1991-02-12

申请号：US271438

申请日：1988-11-14

申请人： Robert A. Schwarz

发明人： Robert A. Schwarz

IPC分类号： B64C13/44

CPC分类号： B64C13/44

摘要： A backdrive system is provided for aircraft flight control surfaces, including a motor for driving a control surface. A fluid pressure responsive engaging/disengaging device is operatively associated between the motor and the control surface. The device may be a clutch normally engaged in the absence of to supply pressure or a brake normally disengaged in response to supply pressure. A supply of fluid pressure is connected to the device. An accumulator is connected in-line between the fluid pressure supply and the engaging/disengaging device for storing hydraulic energy during normal operation of the system and for releasing the stored hydraulic energy for at least a given period of time in the event of loss of supply pressure to allow the control surface to backdrive to a neutral position. A check-valve is provided between the fluid pressure supply and the accumulator to prevent return of hydraulic energy from the accumulator supply of fluid pressure when the supply pressure is lost. A bleed path is provided from the engaging/disengaging device to provide a time delay until the device is reengaged to lock up the control surface and prevent surface flutter.

摘要翻译： 为飞机飞行控制表面设置了一个反向驱动系统，包括用于驱动控制面的马达。 流体压力响应接合/分离装置可操作地联接在电动机和控制表面之间。 该装置可以是在没有供应压力的情况下通常接合的离合器或响应于供应压力正常脱开的制动器。 流体压力的供应被连接到装置。 蓄能器在流体压力供应和接合/分离装置之间在线连接，用于在系统的正常操作期间存储液压能量，并且在供应损失的情况下至少给定的时间段释放所储存的液压能量 压力允许控制表面反向驱动到中立位置。 在流体压力供应和蓄能器之间设置止回阀，以防止当供应压力损失时液压能量从蓄能器供给液体压力返回。 从接合/分离装置提供排放路径以提供时间延迟，直到装置重新接合以锁定控制表面并防止表面颤动。

公开(公告)号：US4597480A

公开(公告)日：1986-07-01

申请号：US685471

申请日：1984-12-24

申请人： Robert A. Schwarz

发明人： Robert A. Schwarz

IPC分类号： F16H37/06 ,  B64C13/28 ,  F16D11/16 ,  F16D1/10

CPC分类号： F16D11/16 ,  Y10T74/19056 ,  Y10T74/1907 ,  Y10T74/19084

摘要： A redundant drive having primary and secondary load paths may have a torque sensor to indicate a failure of the primary load path and make a drive connection for transmitting torque through the secondary load path.The positive engagement torque sensor has a pair of adjacent facing plates connected to coaxial shafts of the secondary load path, with one plate having a series of circularly-arrayed pairs of spaced-apart openings and the other plate having a series of circularly-arrayed movable pins engageable with the first plate and movable within a dead zone between openings of a pair of openings. When there is a failure in the primary load path, the movable pins move into the openings to lock the plates together and provide for torque transmission through the secondary load path. Additionally, the movement of the plates into locked relation causes the functioning of a signalling device to signal the failure of the primary load path through signalling elements including a noncontactable sensor in the form of a magnetic pickup unit which has a magnetic field through which a flag tab may pass upon the lock-up of the plates. The flag tab is part of a flag pivotally carried on one of the plates and having a contoured slot engageable by a flag pin on the other plate to control the position of the flag between an inoperative position and a position in which the flag tab coacts with the magnetic pickup unit to generate a failure signal.

摘要翻译： 具有主要和次要负载路径的冗余驱动器可以具有扭矩传感器，以指示主负载路径的故障，并且形成用于通过次级负载路径传递转矩的驱动连接。 正接合扭矩传感器具有连接到次级负载路径的同轴轴的一对相邻的相对板，一个板具有一系列圆形排列的一对间隔开的开口，另一个板具有一系列圆形排列的可移动 销可与第一板接合，并可在一对开口的开口之间的死区内移动。 当主负载路径发生故障时，可移动销移动到开口中，以将板锁定在一起并提供通过次级负载路径的扭矩传递。 此外，板的移动成锁定关系导致信号装置的功能通过信号元件发出主要负载路径的故障，该信号元件包括磁性拾取单元形式的不可接触的传感器，该磁性拾取单元具有磁场， 标签可以通过板的锁定。 标记片是标记在其中一个板上的枢轴承载的标记的一部分，并且具有与另一个板上的标记销接合的轮廓槽，以控制标志在不工作位置和标记片与之之间的位置之间的位置 磁拾取单元产生故障信号。

公开(公告)号：US4891942A

公开(公告)日：1990-01-09

申请号：US211974

申请日：1988-06-27

申请人： Robert A. Schwarz

发明人： Robert A. Schwarz

摘要： A hydraulically powered actuator (16) for moving a member (28 or 30) into and away from a position at which the member is under a preload is disclosed. A hydraulically powered motor (22) is utilized which is coupled to the member for moving the member to and from the position at which the member is preloaded. A source (40) of pressurized hydraulic fluid is coupled to the hydraulic motor for supplying power to the motor for moving the movable member. A brake (32) is provided which is coupled to the movable member for holding the movable member in the position at which the member is preloaded. A hydraulic fluid control is provided which is coupled to the motor, the brake and the source of pressurized fluid which activates the brake after the motor has moved the member to the position at which the member is preloaded and deactivates the motor while maintaining the member under preload. The invention eliminates the build-up of heat in hydraulic fluid consequent from the prior art method of establishing preload by applying full hydraulic power to the hydraulic motor to hold the member under preload and further is not subject to leakage which is consequent from maintaining a hydraulic motor under full hydraulic pressure. Finally, the invention permits a rapid response in removing the preload from the movable member by merely applying high pressure hydraulic fluid to the hydraulic line of the motor which will cause it to rotate in the opposite direction that the motor rotated in establishing the preload.

公开(公告)号：US4881001A

公开(公告)日：1989-11-14

申请号：US251966

申请日：1988-09-28

申请人： Navinchandra R. Patel ,  Robert A. Schwarz

发明人： Navinchandra R. Patel ,  Robert A. Schwarz

IPC分类号： H02K1/18

CPC分类号： H02K1/185

摘要： In a dynamoelectric machine, a stator assembly is mounted directly in a bore of a housing for surrounding a rotor. The bore has an axially extending slot. The stator assembly includes a plurality of laminations bonded together in a stacked array for circumferentially surrounding the rotor. A given number of the laminations at one end of the stator assembly are radially enlarged to define a tab-like flange for projecting into the slot of the housing to prevent the stator assembly from rotating relative to the housing. Complementary axially abutting shoulders are provided between the stator assembly and the housing to prevent relative rotation therebetween.

摘要翻译： 在电动机中，定子组件直接安装在壳体的孔中以围绕转子。 孔具有轴向延伸的槽。 定子组件包括以堆叠阵列结合在一起的多个叠片，用于周向地围绕转子。 在定子组件一端的给定数量的叠片被径向扩大以限定突出到壳体的狭槽中的凸片状凸缘，以防止定子组件相对于壳体旋转。 在定子组件和壳体之间提供互补的轴向邻接肩部以防止它们之间的相对旋转。