公开(公告)号：US5141402A

公开(公告)日：1992-08-25

申请号：US647609

申请日：1991-01-29

Applicant: James V. Bloomquist ,  Albin J. Niemic

Inventor： James V. Bloomquist ,  Albin J. Niemic

IPC: B29C45/82 ,  F04B49/06 ,  H02K17/30

CPC classification number: B29C45/82 ,  F04B49/06 ,  F04B49/065 ,  H02K17/30 ,  F04B2201/0403 ,  F04B2201/0805 ,  F04B2201/12051 ,  F04B2203/0201 ,  F04B2205/05

Abstract: An electric-motor hydraulic pump includes a housing having a stationary internal shaft. A pair of cylinder blocks are rotatably carried by the shaft within the housing, and an array of pistons are slidably disposed with each cylinder block. A yoke plate is mounted within the housing and engages the pistons for determining displacement of the pistons within the cylinder blocks. Fluid inlet and outlet ports are provided in the housing and are coupled to the cylinder blocks. An induction motor includes a rotor carried by the cylinder block for corotation therewith, and a stator mounted within the housing surrounding the rotor. An electronic controller for controlling outlet fluid pressure and flow from the pump includes a plurality of sensors mounted on the housing for sensing operating characteristics of the pump and motor to provide electronic sensor signals as functions thereof. Control electronics are responsive to the sensor signals for controlling fluid pressure and flow from the pump by varying effective displacement of the pump, and by varying the electrical power (current and frequency) applied to the motor.

Abstract translation: 电动机液压泵包括具有固定内部轴的壳体。 一对气缸体由轴可旋转地支承在壳体内，并且活塞阵列可滑动地布置有每个气缸体。 轭板安装在壳体内并与活塞接合，以确定活塞在气缸体内的位移。 流体入口和出口设置在壳体中并且联接到气缸体。 感应电动机包括由气缸体承载的用于与其共旋转的转子和安装在围绕转子的壳体内的定子。 用于控制出口流体压力和来自泵的流量的电子控制器包括安装在壳体上的多个传感器，用于感测泵和马达的操作特性，以提供作为其功能的电子传感器信号。 控制电子设备响应于传感器信号，通过改变泵的有效位移以及通过改变施加到电动机的电功率（电流和频率）来控制流体压力和来自泵的流量。

公开(公告)号：US5135031A

公开(公告)日：1992-08-04

申请号：US769112

申请日：1991-09-30

Applicant: Roy T. Burgess ,  Rajamouli Gunda ,  Frank Herta ,  Robert C. Hodges ,  James A. Kessler ,  Richard S. Leemhuis ,  Michael R. McCarty ,  Robert W. Stephens

Inventor： Roy T. Burgess ,  Rajamouli Gunda ,  Frank Herta ,  Robert C. Hodges ,  James A. Kessler ,  Richard S. Leemhuis ,  Michael R. McCarty ,  Robert W. Stephens

IPC: F04B49/06 ,  G05D16/20

CPC classification number: G05D16/2066 ,  F04B49/065 ,  F04B2201/1201 ,  F04B2201/12051 ,  F04B2205/05 ,  F04B2207/01 ,  F04B2207/0422 ,  Y10T137/86622

Abstract: A rotary hydraulic machine which includes a housing having a shaft mounted for rotation within the housing about a shaft axis. A cylinder block is coupled to the shaft for co-rotation with the shaft within the housing and includes a plurality of cylinders disposed in a circumferential array parallel to and surrounding the shaft axis. A piston is disposed to reciprocate within each of the cylinders and is coupled to a yoke for determining displacement of the pistons within the cylinders. A valve plate is mounted on a valve block and includes kidney-shaped slots for registering with the cylinders as the cylinder block rotates, and thereby connecting the cylinders to pump input and output ports. A microprocessor-based controller is externally mounted on the pump valve block and includes internal memory having various remotely-selectable control programs prestored therein. Sensors responsive to pump operating conditions are connected to the pump control electronics, and include a first sensor responsive to yoke position, a pressure sensor responsive to pump output pressure and a speed sensor responsive to angular velocity of shaft rotation. All of the electronic components are mounted on the valve block.

Abstract translation: 一种旋转液压机，其包括具有轴的壳体，所述轴安装成用于在所述壳体内围绕轴线旋转。 气缸体联接到轴上，用于与壳体内的轴共同旋转，并且包括多个圆筒，该圆柱体设置成平行于并围绕轴线的周向阵列。 活塞被设置成在每个气缸内往复运动，并且联接到轭，以确定活塞在气缸内的位移。 阀板安装在阀块上，并且在气缸体旋转时包括用于与气缸配准的肾形槽，从而将气缸连接到泵输入和输出端口。 基于微处理器的控制器外部安装在泵阀块上，并且包括其中预先存储有各种可远程选择的控制程序的内部存储器。 响应于泵操作条件的传感器连接到泵控制电子器件，并且包括响应于轭位置的第一传感器，响应于泵输出压力的压力传感器和响应于轴旋转的角速度的速度传感器。 所有电子部件安装在阀块上。

公开(公告)号：US4737079A

公开(公告)日：1988-04-12

申请号：US25497

申请日：1987-03-13

Applicant: Juetsu Kurosawa ,  Makoto Misawa

Inventor： Juetsu Kurosawa ,  Makoto Misawa

IPC: F04B27/14 ,  F04B13/00 ,  F04B27/08 ,  F04B27/18 ,  F04B49/10 ,  F04B1/26

CPC classification number: F04B49/103 ,  F04B27/1804 ,  F04B2027/1813 ,  F04B2027/1827 ,  F04B2027/1854 ,  F04B2201/12041 ,  F04B2201/12051 ,  F04B2201/1206

Abstract: A variable capacity wobble plate compressor of the type that a wobble plate mounted on a drive shaft is swung axially of the drive shaft as the drive shaft rotates, and pistons connected to the wobble plate make reciprocating motions in response to swinging of the wobble plate, wherein a change in the angularity of the wobble plate causes a change in stroke of the reciprocating motions of the pistons whereby the capacity of the compressor is varied. A sensing element arranged on the wobble plate is moved along a predetermined orbital path together with swinging of the wobble plate. A sensor arranged on a compressor housing generates an electric signal when the sensing element passes by the sensor as the wobble plate swings. A control unit determines the rotational speed of the compressor and the angularity of the wobble plate on the basis of the electric signal from the sensor. The sensor is so located as to align with a predetermined location between an axial center of the predetermined orbital path of swinging of the sensing element and an extreme possible point toward the pistons, when the wobble plate assumes the minimum angularity.

Abstract translation: 当驱动轴旋转时，安装在驱动轴上的摆动盘摆动在驱动轴的轴向的可变容量摆盘式压缩机，与摇摆板连接的活塞响应于摆盘的摆动而进行往复运动， 其中摆动板的角度的变化导致活塞的往复运动的行程改变，从而改变压缩机的容量。 布置在摆盘上的感测元件与摆动板的摆动一起沿着预定轨道路径移动。 布置在压缩机壳体上的传感器当摇摆板摆动时感测元件通过传感器时产生电信号。 控制单元基于来自传感器的电信号确定压缩机的旋转速度和摆动板的角度。 当摆动板呈现最小的角度时，传感器被定位成与传感元件摆动的预定轨道路径的轴向中心和朝向活塞的极端可能点之间的预定位置对齐。

公开(公告)号：US4494911A

公开(公告)日：1985-01-22

申请号：US489772

申请日：1983-04-29

Applicant: Duane J. Davis

Inventor： Duane J. Davis

IPC: F04B1/26 ,  F04B1/32

CPC classification number: F04B1/324 ,  F04B2201/12051 ,  Y10S60/911

Abstract: An electronic closed loop piston pump servo control system including a swash plate within the pump housing which controls pump output as a function of its position about a rotational axis, means for altering the position of said swash plate, means for producing electric signals representative of the desired and actual swash plate angular positions, and means for comparing these signals and producing a control or error signal to the means for altering the swash plate position as a function of these signal differences. The means for producing electric signals representative of the actual swash plate position includes a rotary potentiometer mounted in the pump housing and directly connected to the swash plate along a common axis of rotation. This potentiometer produces a d.c. signal indicating the angular position of the swash plate on this common axis. A failsafe circuit is provided in the comparator means which prevents the error signal from affecting the swash plate angular position if the feedback signal falls below a predetermined reference level. The potentiometer rotates through a relatively small arc such that when the sliding resistive contacts thereon are worn, the potentiometer contacts may be rotated to respond along a fresh arc.

Abstract translation: 一种电子闭环活塞泵伺服控制系统，包括在泵壳体内的斜盘，其根据其位于旋转轴线的位置来控制泵输出，用于改变所述斜盘的位置的装置，用于产生代表 期望的和实际的斜盘角度位置，以及用于比较这些信号并产生控制或误差信号到用于改变斜盘位置的装置作为这些信号差的函数的装置。 用于产生表示实际斜盘位置的电信号的装置包括安装在泵壳体中的旋转电位计，并沿着共同的旋转轴线直接连接到斜盘。 该电位器产生直流 指示斜盘在该公共轴上的角位置的信号。 在比较器装置中设置故障保护电路，如果反馈信号低于预定的参考电平，则防止误差信号影响斜盘角位置。 电位器旋转通过较小的电弧，使得当其上的滑动阻力接触被磨损时，电位器触点可以旋转以沿着新的电弧响应。

公开(公告)号：US4432703A

公开(公告)日：1984-02-21

申请号：US318064

申请日：1981-11-04

Applicant: Gerhard Beutler ,  Heinz Berthold ,  Joachim Morsch ,  Karl Schiene

Inventor： Gerhard Beutler ,  Heinz Berthold ,  Joachim Morsch ,  Karl Schiene

IPC: F04B1/26 ,  F04B49/00 ,  F04B49/06 ,  F16H61/40 ,  F16H61/46

CPC classification number: F04B49/065 ,  F04B2201/12051 ,  F04B2205/05 ,  F04B2207/041 ,  F04B2207/042

Abstract: An adjusting arrangement for a hydraulic pump with a variable flow quantity, having an operating cylinder located in a neutral position through the intermediary of a positively-acting resetting device, the piston of which is adjustable dependent upon the actual discharge pressure and dependent upon a parameter proportional to the actual discharge flow quantity into a position corresponding to the rated discharge flow quantity with consideration being given to the limiting value for maximum power output, maximum discharge pressure, maximum discharge flow quantity and, as required, the flow direction. An electronic control arrangement receives electrical signals corresponding to the rated discharge flow quantity and the actual discharge flow quantity and the actual pressure, which processes these signals under calculation of the actual power output and the actual pressure, and generates corresponding setting signals for the adjustment of the operating cylinder.

Abstract translation: 一种用于具有可变流量的液压泵的调节装置，其具有通过正向作用的复位装置的中间位置处于中间位置的操作气缸，其活塞可根据实际排出压力而调节，并且取决于参数 与实际排出流量成比例，考虑到最大功率输出的限制值，最大排出压力，最大排出流量以及根据需要的流动方向，进入与额定排出流量对应的位置。 电子控制装置接收对应于额定排放流量和实际排放流量以及实际压力的电信号，该实际压力在实际功率输出和实际压力的计算下处理这些信号，并且产生相应的设置信号用于调整 操作气缸。

公开(公告)号：US20190024656A1

公开(公告)日：2019-01-24

申请号：US16069230

申请日：2016-12-07

Applicant: Danfoss Power Solutions GmbH & Co OHG

Inventor： Peter Bahna ,  Suenje Marsch ,  Heiko Laffrenzen

IPC: F04B51/00 ,  F04B1/20 ,  G01D5/14

CPC classification number: F04B51/00 ,  F04B1/2078 ,  F04B1/324 ,  F04B2201/12051 ,  G01D5/14 ,  G01D5/145

Abstract: The invention is directed to a swashplate angle sensor (10) for a variable displacement hydraulic unit (1). The hydraulic unit (1) comprising a housing (2), within which a swashplate (3) with a rod shaped feedback-link (12) fixedly attached to the swashplate (3) is arranged pivotable around a swashplate axis (7). The angle sensor (10) comprising a magnet (16) mounted rotatable on a magnet carrier (13), and a sensor (15) for sensing the orientation of the magnet (16). The magnet carrier (13) is located in a control block (14) attached to the housing (2) and is located parallel to the feedback-link (12). The magnet carrier (13) is rotatable around a sensor axis (18) being parallel to the swashplate axis (7). A linkage spring (11) provides a connection between the feedback-link (12) and the magnet carrier (13) such that a pivoting of the swashplate (3) with the feedback-link (12) causes a rotation of the magnet carrier (13).

公开(公告)号：US08950314B2

公开(公告)日：2015-02-10

申请号：US12562076

申请日：2009-09-17

Applicant: Leif Moberg

Inventor： Leif Moberg

IPC: F01B25/26 ,  F04B1/32

CPC classification number: F04B1/324 ,  F04B2201/12051

Abstract: An embodiment the invention relates to a yoke position sensor system (7) for a hydraulic device (1), such as a pump or motor, provided with a moveable yoke (3) which is used for varying the displacement of the hydraulic device (1) and to a method for sensing the position of a yoke (3) relative to a housing (2). The housing (2) and the yoke (3) are movably and rotatably connected to each other. When the yoke (3) is rotated, there is a yoke angle sensor (5) indicating the degrees of rotation of the yoke and a yoke angle of zero corresponds to a zero displacement volume. The hydraulic device (1) includes a second yoke angle sensor (7) constructed to indicate when the yoke angle is within or outside an interval including the zero displacement angle.

Abstract translation: 本发明涉及一种用于液压装置（1）的轭位置传感器系统（7），例如泵或马达，其具有用于改变液压装置（1）的位移的可动轭（3） ）和用于感测轭（3）相对于壳体（2）的位置的方法。 壳体（2）和磁轭（3）彼此可移动和可旋转地连接。 当轭（3）旋转时，存在指示轭的旋转角度的轭角传感器（5），并且零磁轭角度对应于零排量体积。 液压装置（1）包括第二轭角度传感器（7），其构造成指示轭架角度何时在包括零位移角度的间隔之内或之外。

公开(公告)号：US20110271829A1

公开(公告)日：2011-11-10

申请号：US13186122

申请日：2011-07-19

Applicant: George Kadlicko

Inventor： George Kadlicko

IPC: F01B3/02

CPC classification number: F16D31/02 ,  F04B1/324 ,  F04B49/002 ,  F04B49/08 ,  F04B2201/0805 ,  F04B2201/1201 ,  F04B2201/12051 ,  Y10S92/02

Abstract: A variable capacity hydraulic machine has a rotating group located within a casing and a control housing secured to the casing to extend across and seal an opening in the casing. The control housing accommodates a control circuit and a pair of sensors to sense change in parameters associated with the rotating group. One of the sensors is positioned adjacent the barrel on the rotating group to sense rotational speed and the other senses displacement of the swashplate. The control housing accommodates a control valve and accumulator to supply fluid to the control valve.

Abstract translation: 可变容量液压机具有位于壳体内的旋转组和固定到壳体的控制壳体，以延伸跨过并密封壳体中的开口。 控制壳体容纳控制电路和一对传感器以感测与旋转组相关联的参数的变化。 传感器中的一个定位在旋转组上的筒附近以感测旋转速度，而另一个感测旋转斜盘的位移。 控制壳体容纳控制阀和蓄能器以将流体供应到控制阀。

公开(公告)号：US08037681B2

公开(公告)日：2011-10-18

申请号：US11637211

申请日：2006-12-11

Applicant: Wolfgang Kraft

Inventor： Wolfgang Kraft

IPC: F16D31/02

CPC classification number: E02F9/225 ,  E02F9/2235 ,  E02F9/2296 ,  F04B49/065 ,  F04B2201/12051 ,  F04B2205/05 ,  F15B11/165 ,  F15B2211/20546 ,  F15B2211/253 ,  F15B2211/6309 ,  F15B2211/6313

Abstract: A hydrostatic drive system (1) has a load-sensing pump (2) with an adjustable discharge volume and at least one consumer connected to the pump (2). The discharge volume of the pump (2) can be set by a discharge volume control device (6) that sets the delivery pressure of the pump available in a delivery line (4) of the pump (2) so that it is higher by a pilot control pressure difference than the load pressure of the consumer. The discharge volume control device (6) can be actuated by an electronic control device (7) functionally connected with a sensor device (9) for measuring the load pressure of the consumer and with a sensor device (8) for measuring the delivery pressure available in the delivery line (4). A circulation device (15) is associated with the delivery line (4) to control the connection of the delivery line (4) with a reservoir (3).

Abstract translation: 静液压驱动系统（1）具有具有可调放电容积的负载感测泵（2）和连接到泵（2）的至少一个使用者。 泵（2）的排出容积可以由放电容量控制装置（6）设定，排放容积控制装置（6）将泵（2）的输送管线（4）中可用的泵的输送压力设定为高于一 先导控制压差比消费者的负载压力。 排放量控制装置（6）可以由与用于测量消费者的负载压力的传感器装置（9）功能性连接的电子控制装置（7）和用于测量可用的输送压力的传感器装置（8）致动 在送货线（4）。 循环装置（15）与输送管线（4）相关联，以控制输送管线（4）与贮存器（3）的连接。

公开(公告)号：US08006610B2

公开(公告)日：2011-08-30

申请号：US12710050

申请日：2010-02-22

Applicant: Herbert Dreher ,  Clemens Krebs ,  Timo Nafz

Inventor： Herbert Dreher ,  Clemens Krebs ,  Timo Nafz

IPC: F01B13/04

CPC classification number: F04B1/324 ,  F04B1/2014 ,  F04B49/002 ,  F04B2201/12041 ,  F04B2201/12051

Abstract: An axial piston machine in a swash-plate construction with an actuating device. The actuating device comprises a actuating piston and a mating piston. The actuating piston and the mating piston are connected to the swash plate each with the first end thereof and can be applied with the second end thereof with a force acting in the direction of the first end. For resetting the swash plate in the direction of a resting position, an elastic element is provided on the actuating piston and on the mating piston, which is supported on a spring bearing arranged on the first side facing the swash plate of the actuating piston or of the mating piston. In the other direction, the elastic element is supported on a second spring bearing arranged on the end facing away from the swash plate of the actuating piston or of the mating piston. When the swash plate is deflected from the resting position, the second spring bearing of the actuating piston or of the mating piston is supported on a counter bearing on the housing side. The second spring bearing of the respective other actuating bearing or mating bearing is supported on a counter bearing on the piston side.

Abstract translation: 一种带有致动装置的旋转斜盘结构的轴向活塞机。 致动装置包括致动活塞和配合活塞。 致动活塞和配合活塞连接到斜盘，每个斜盘的第一端都可以与其第二端一起施加在第一端的方向上的力。 为了沿静止位置的方向复位斜盘，弹性元件设置在致动活塞上和配合活塞上，配合活塞被支撑在布置在面向致动活塞的斜板的第一面上的弹簧轴承上，或者 配合活塞。 在另一方向上，弹性元件被支撑在布置在远离致动活塞或配合活塞的斜板的一端上的第二弹簧轴承上。 当旋转斜盘从静止位置偏转时，致动活塞或配合活塞的第二弹簧轴承支撑在壳体侧的止推轴承上。 相应的其它致动轴承或配合轴承的第二弹簧轴承支撑在活塞侧的反向轴承上。