公开(公告)号：US4201114A

公开(公告)日：1980-05-06

申请号：US953652

申请日：1978-10-23

申请人： Clyde E. Cobb ,  Donald A. Muths

发明人： Clyde E. Cobb ,  Donald A. Muths

IPC分类号： F15B13/044 ,  F15B13/043 ,  F15B13/16

CPC分类号： F15B13/16 ,  Y10T137/8659 ,  Y10T137/86614 ,  Y10T403/125 ,  Y10T403/18

摘要： An electrohydraulic servovalve including a second stage piston slidably mounted within a housing and movable responsive to application of pressure signals thereacross to control the flow of fluid under pressure from a source to a load in response to electrical input signals applied to the servovalve. The electrical signals are applied to a torque motor which has a driven member affixed thereto which generates the pressure signals applied to the spool. A mechanical feedback member is connected between the driven member and the spool. The mechanical feedback member is part of an assembly which is removably attached to the driven member. The removable attachment includes a tang extending radially from the driven member which receives a holder to which the feedback member is permanently affixed. The holder includes opposed flanges one of which receives the tang through an indexing opening provided therein. The tang resides in a space defined between the flanges and further the holder includes means for clamping the holder to the tang to position the feedback member in its normal operational position.

摘要翻译： 一种电动液压伺服阀，包括可滑动地安装在壳体内的第二级活塞，并响应于在其上施加压力信号而运动的第二级活塞，以响应于施加到伺服阀的电输入信号来控制压力下的流体从源到负载的流动。 电信号被施加到具有附接到其上的从动构件的扭矩电动机，其产生施加到线轴的压力信号。 机械反馈构件连接在从动构件和线轴之间。 机械反馈构件是可移除地附接到从动构件的组件的一部分。 可拆卸的附件包括从被驱动构件径向延伸的柄，该柄接收反馈构件被永久固定到的保持器。 保持器包括相对的凸缘，其中一个凸缘通过设置在其中的分度开口接收柄脚。 脚位于限定在凸缘之间的空间中，并且保持器还包括用于将保持器夹紧到柄脚以将反馈构件定位在其正常操作位置的装置。

公开(公告)号：US4585216A

公开(公告)日：1986-04-29

申请号：US616951

申请日：1984-06-04

申请人： Kent R. Boyer ,  Clyde E. Cobb

发明人： Kent R. Boyer ,  Clyde E. Cobb

IPC分类号： F16F1/16 ,  F16F1/00

CPC分类号： F16F1/16 ,  Y10T74/18576

摘要： The shaft of a linear actuator driven by a force motor preferably electromagnetic or hydraulic has a bifurcated arm positioned with one of the bifurcations on each side of the shaft and with the opposite end of the arm securely affixed to a torsion bar. The torsion bar has both ends thereof rigidly secured to a frame member. The bifurcations on the arm end contact a hub which defines a pair of side walls that are threadably received upon the end of the shaft. As the shaft reciprocates, a force is generated by the torsion bar colinear with the shaft axis motion which is proportional to the displacement of the shaft.

摘要翻译： 由优选电磁或液压的力马达驱动的线性致动器的轴具有分叉臂，该双臂定位成在轴的每一侧上的一个分叉，并且臂的相对端牢固地固定在扭杆上。 扭杆的两端刚性地固定在框架构件上。 臂端的分叉接触限定一对侧壁的轮毂，该侧壁螺纹接纳在轴的端部。 当轴往复运动时，通过与轴的位移成比例的轴线运动，由扭杆共线产生力。

公开(公告)号：US5031653A

公开(公告)日：1991-07-16

申请号：US552737

申请日：1990-07-12

申请人： Samuel L. Wilson ,  Timothy C. Bryarly ,  Clyde E. Cobb

发明人： Samuel L. Wilson ,  Timothy C. Bryarly ,  Clyde E. Cobb

IPC分类号： F15B13/043 ,  F15B13/16

CPC分类号： F15B13/16 ,  Y10T137/2322 ,  Y10T137/86614 ,  Y10T137/86815

摘要： Pressure gain compensation for a single-stage servovalve of the jet pipe type. The pressure gain compensation is provided by a separate reciprocally mounted spool having a feedback wire connected between the spool and the ejector jet. The spool has a differential pressure applied across the ends thereof from the receptors disposed opposed the ejector jet. Movement of the spool applies a force feedback to the ejector jet which is proportional to the pressure differential across the receptors and is opposite the force applied to the ejector by the torque motor to thereby compensate for pressure gain.

公开(公告)号：US5285715A

公开(公告)日：1994-02-15

申请号：US926013

申请日：1992-08-06

申请人： Alvon C. Elrod, Jr. ,  Robert C. Heagey ,  Donald C. Muths ,  Larry L. Nichols ,  Clyde E. Cobb

发明人： Alvon C. Elrod, Jr. ,  Robert C. Heagey ,  Donald C. Muths ,  Larry L. Nichols ,  Clyde E. Cobb

IPC分类号： F15B13/044 ,  G05B19/35 ,  F15B9/03

CPC分类号： G05B19/351 ,  G05B2219/37462 ,  G05B2219/41009 ,  G05B2219/41133 ,  G05B2219/41318 ,  Y10T137/86614 ,  Y10T137/86622

摘要： An electrohydraulic servovalve including a tailoring circuit coupled to provide a predetermined input signal to the motor of the valve. The predetermined signal functions to control the flow of fluid from the valve to effect a desired result. The electrohydraulic servovalve includes a housing defining round flow ports with a spool valve for metering flow through the ports. The spool valve substantially overlaps the round flow ports. The tailoring circuit includes a plurality of amplifiers each of which has a different gain. A command signal is applied to the amplifier and the output from the amplifiers is summed to provide an input signal to the motor of the electrohydraulic servovalve.

摘要翻译： 一种电动液压伺服阀，包括耦合以向阀的电动机提供预定输入信号的定制电路。 预定信号用于控制来自阀的流体的流动以实现期望的结果。 电动液压伺服阀包括限定圆形流动端口的壳体，其具有用于计量流过端口的滑阀。 滑阀基本上与圆形流动端口重叠。 定制电路包括多个放大器，每个放大器具有不同的增益。 向放大器施加指令信号，并将来自放大器的输出相加，以向电动液压伺服阀的电动机提供输入信号。

公开(公告)号：US4576203A

公开(公告)日：1986-03-18

申请号：US610531

申请日：1984-05-15

申请人： Kent R. Boyer ,  Clyde E. Cobb

发明人： Kent R. Boyer ,  Clyde E. Cobb

IPC分类号： F15B13/043

CPC分类号： F15B13/043 ,  Y10T137/86606 ,  Y10T137/86614 ,  Y10T403/65

摘要： A coupling device for interconnecting a drive shaft and a driven shaft which is maintained under fluid pressure to provide a tensile preload and which is specifically adapted for utilization with hydromechanical or electrohydraulic servovalves.

摘要翻译： 用于互连驱动轴和从动轴的联接装置，其被维持在流体压力下以提供拉伸预载荷，并且特别适于与液压机械或电动液压伺服阀一起使用。

公开(公告)号：US4216795A

公开(公告)日：1980-08-12

申请号：US972766

申请日：1978-12-26

申请人： Clyde E. Cobb ,  Kim L. Coakley

发明人： Clyde E. Cobb ,  Kim L. Coakley

IPC分类号： F15B13/044 ,  F15B5/00 ,  F16B21/04 ,  F16K11/07 ,  F15B13/16

CPC分类号： F15B5/006 ,  Y10T137/8242 ,  Y10T137/86614 ,  Y10T403/4662

摘要： An electrohydraulic servovalve having a pair of linear, variable, differential transducers (LVDT) affixed thereto in side by side relationship. A spool valve driven by the electrohydraulic servovalve is connected to the movable core in each of the LVDTs so that as the spool valve moves, each of the LVDTs develops a position output signal representative of the position of the spool. The connecting mechanism between the driven spool valve and the LVDT cores is a rod which is attached to the spool and includes a pair of flanges at the opposite end defining a groove therebetween. A pair of plates spaced apart at the center define a slot centrally thereof. The plates at the slot are spaced apart so that the width of the two plates plus the space between them is greater than the width of the groove in the rod. The outermost flange is formed so that it will fit through the slot in the plates. The two cores of the LVDTs include rods which are in turn permanently affixed at each end of the plates. In assembly, the plates are fitted over the end of the rod attached to the spool vavle and the centers are compressed slightly and the entire assembly is turned 90.degree. to lock the plates in position in a zero backlash configuration. The LVDTs are then assembled in place with the cores thereof inserted into the coils and the housing is attached to the body of the electrohydraulic servovalve.

摘要翻译： 具有并排关系的具有一对线性可变差动换能器（LVDT）的电液伺服阀。 由电动液压伺服阀驱动的滑阀与每个LVDT中的可动铁芯连接，因此当滑阀移动时，每个LVDT产生代表阀芯位置的位置输出信号。 从动滑阀和LVDT磁芯之间的连接机构是连接到滑阀的杆，并且在相对端包括一对在其间形成凹槽的凸缘。 在中心隔开的一对板在其中央形成一个槽。 在槽处的板间隔开，使得两个板的宽度加上它们之间的空间大于杆中的槽的宽度。 最外面的凸缘形成为通过板中的槽配合。 LVDT的两个芯包括依次固定在板的每一端的杆。 在组装中，板被安装在连接到卷轴气泡的杆的端部上，并且中心被稍微压缩，并且整个组件转动90°以将板锁定在零间隙配置中的适当位置。 然后将LVDT组装到其内插入线圈中的芯部，并且壳体附接到电动液压伺服阀的主体。