公开(公告)号：US5993168A

公开(公告)日：1999-11-30

申请号：US894078

申请日：1997-08-12

Applicant: Mikko Erkkilae ,  Felix zu Hohenlohe

Inventor： Mikko Erkkilae ,  Felix zu Hohenlohe

IPC: F04B49/00 ,  F04B49/08

CPC classification number: F04B49/08 ,  F04B2201/1204 ,  F04B2205/08

Abstract: A power or moment regulation device for an adjustable hydraulic pump having a servo setting apparatus providing for a smooth stepless setting of the pump delivery quantity. In the device, the delivery quantity setting is determined in dependence upon the delivery pressure of the hydraulic pump in a delivery pressure line and a control pressure in a control line. The setting apparatus has a spring setting a pump setting member in the direction of maximum delivery quantity and a piston acting upon the pump setting member in the opposite direction of delivery quantity reduction. The piston is acted upon via a hydraulically actuated control valve with the delivery pressure. The actuation of the control valve is effected by the control pressure in the control line. A moment valve is provided, the closure force of which is determined by a metering spring arrangement connected with the pump setting member and biased in dependence upon the delivery quantity setting. The moment valve connects the control line with a discharge in dependence upon the control pressure in the control line and the biasing of the metering spring arrangement. A settable choke device, for setting the control pressure acting upon the control valve and the moment valve, is arranged in the control line branching off from the operating pressure line of the pump.

Abstract translation: PCT No.PCT / EP96 / 01970 Sec。 371日期：1997年8月12日 102（e）日期1997年8月12日PCT提交1996年5月9日PCT公布。 公开号WO96 / 36813 日期1996年11月21日用于具有伺服设定装置的可调节液压泵的功率或力矩调节装置，其提供泵输送量的平滑无级设定。 在装置中，输送量设定取决于输送压力线中的液压泵的输送压力和控制线中的控制压力。 设定装置具有在最大输送量方向上设定泵设定部件的弹簧和沿着输送量减少的相反方向作用在泵固定部件上的活塞。 活塞通过具有输送压力的液压致动控制阀作用。 控制阀的启动由控制线中的控制压力来实现。 提供了一个力矩阀，其关闭力由与泵设定构件连接的计量弹簧装置确定，并且根据输送量设定而偏置。 力矩阀根据控制线中的控制压力和计量弹簧装置的偏压将控制线连接到排出口。 用于设定作用于控制阀和力矩阀的控制压力的可设置的扼流装置布置在从泵的操作压力线分支的控制线中。

公开(公告)号：US5567123A

公开(公告)日：1996-10-22

申请号：US526830

申请日：1995-09-12

Applicant: Dale B. Childress ,  Noah D. Manring

Inventor： Dale B. Childress ,  Noah D. Manring

IPC: F04B49/00 ,  F04B13/00 ,  F04B49/08 ,  F16K31/124

CPC classification number: F04B49/08 ,  F04B2201/1202 ,  F04B2201/1204

Abstract: A pump displacement control for a variable displacement pump includes a torque control valve disposed between a variable torque limiter and a force applying device disposed in axial alignment within a common bore. A sleeve and a valve spool are movable relative to each other to establish a first condition communicating discharge pressure into an actuator chamber to move a swashplate toward a minimum displacement position against the bias of a spring or a second condition communicating the actuating chamber with an exhaust passage to allow the spring to move the swashplate toward its maximum displacement position. A torque control piston disposed between opposing springs resiliently bias the valve spool in a direction to establish the second condition when control fluid is directed into a control chamber. Pump discharge pressure communicated into a pressure chamber exerts a force against the valve spool proportional to the discharge pressure so that the valve spool moves in a second direction to establish the first condition when the control force exceeds the biasing force exerted by the torque limiter.

Abstract translation: 用于可变排量泵的泵排量控制器包括设置在可变扭矩限制器和在公共孔内轴向对准设置的施力装置之间的扭矩控制阀。 套管和阀芯可相对于彼此移动以建立将排放压力连通到致动器室中的第一状态，以克服弹簧的偏压将斜盘移向最小位移位置，或者使致动室与排气连通的第二状态 通道以允许弹簧将斜盘移向其最大位移位置。 设置在相对弹簧之间的扭矩控制活塞在控制流体被引导到控制室中时沿一个方向弹性地偏压阀芯以建立第二状态。 连通到压力室的泵排出压力与排出压力成比例地施加抵抗阀芯的力，使得阀芯在第二方向上移动，以在控制力超过扭矩限制器施加的偏压力时建立第一状态。

公开(公告)号：US5388965A

公开(公告)日：1995-02-14

申请号：US033877

申请日：1993-03-19

Applicant: Bethold A. Fehn

Inventor： Bethold A. Fehn

IPC: F04B13/00 ,  F04B15/02 ,  F04B49/06 ,  G01F11/02 ,  F04B21/00

CPC classification number: G01F11/029 ,  F04B13/00 ,  F04B15/02 ,  F04B49/065 ,  F04B2201/0201 ,  F04B2201/0202 ,  F04B2201/0209 ,  F04B2201/06012 ,  F04B2201/1204 ,  F04B2203/0901 ,  F04B2203/0902 ,  F04B2203/0903 ,  F04B2203/091 ,  F04B2205/05 ,  Y10S417/90

Abstract: The present invention is a sludge pump system which includes a means for monitoring operation of a sludge pump. The sludge pump includes a material cylinder and a piston moveable in the material cylinder. A pump drive moves the piston during working cycles which include a pumping stroke and a filling stroke. A pump valve mechanism connects the material cylinder to an outlet during pumping strokes and connects the material cylinder to an inlet during filling strokes. A means for monitoring operation of the pump is provided. The means for monitoring includes a means for sensing a first parameter related to operation of the pump drive, a means for sensing a second parameter indicative of operation of the piston, and a means for determining errors in the operation of the pump based upon the first parameter and the second parameter.

Abstract translation: 本发明是一种污泥泵系统，其包括用于监测污泥泵的操作的装置。 污泥泵包括可在料筒中移动的料筒和活塞。 泵驱动器在包括泵送冲程和填充冲程的工作循环期间移动活塞。 泵阀机构在泵送冲程期间将材料筒连接到出口，并且在填充冲程期间将材料筒连接到入口。 提供了一种用于监测泵的操作的装置。 用于监测的装置包括用于感测与泵驱动器的操作相关的第一参数的装置，用于感测指示活塞的操作的第二参数的装置，以及用于基于第一个来确定泵的操作中的误差的装置 参数和第二个参数。

公开(公告)号：US5346368A

公开(公告)日：1994-09-13

申请号：US131091

申请日：1993-10-01

Applicant: Edward A. Oakley ,  Harry K. Crow ,  Thomas M. Anderson ,  Richard T. Atherton ,  Berthold A. Fehn

Inventor： Edward A. Oakley ,  Harry K. Crow ,  Thomas M. Anderson ,  Richard T. Atherton ,  Berthold A. Fehn

IPC: F04B15/02 ,  F04B49/06 ,  G01F11/02 ,  F04B21/00

CPC classification number: G01F11/029 ,  F04B15/02 ,  F04B49/065 ,  F04B2201/0201 ,  F04B2201/0202 ,  F04B2201/0209 ,  F04B2201/06012 ,  F04B2201/1204 ,  F04B2203/0902 ,  F04B2205/05 ,  Y10S417/90

Abstract: A system for the transport of high solids sludge includes a positive displacement pump for pumping sludge through a pipeline. The volume of sludge transported is accurately measured by determining the fill percentage during pumping cycle.

Abstract translation: 用于运输高固体污泥的系统包括用于通过管道泵送污泥的容积式泵。 通过确定泵送循环期间的填充百分比来精确测量运输的污泥体积。

公开(公告)号：US4600364A

公开(公告)日：1986-07-15

申请号：US621555

申请日：1984-06-18

Applicant: Tohru Nakatani ,  Teruo Akiyama

Inventor： Tohru Nakatani ,  Teruo Akiyama

IPC: F04B49/00 ,  F04B49/08 ,  F16H61/46 ,  F16H61/468

CPC classification number: F16H61/468 ,  F04B49/002 ,  F04B49/08 ,  F16H61/46 ,  F04B2201/1201 ,  F04B2201/1202 ,  F04B2201/1204

Abstract: A control system for a variable displacement pump or pumps driven by a vehicular engine for supplying pressurized fluid to implement actuators via implement control valves. The engine has several output conditions each with a different output torque characteristic. The control system includes a servomechanism comprising a servoactuator section coupled to the pump for varying the per cycle displacement thereof, a servovalve section for operating the servoactuator section by fluid pressure from a fixed displacement pump, and a control section for actuating the servovalve section. The servomechanism control section is fluid operated from a torque control valve, which delivers a controlled degree of fluid pressure from the fixed displacement pump to the control section in order to correspondingly vary the torque requirement of the variable displacement pump. The torque control valve is solenoid operated from a controller in association with a sensor capable of sensing each output condition in which the engine operates, in such a way that the torque requirement of the pump is controlled to suit the sensed output condition of the engine. The servomechanism control section is further under the control of a drain sensor effective to control the pump displacement in accordance with the flow rate of the fluid being drained from the implement control valves.

Abstract translation: 用于可变排量泵的控制系统或由车辆发动机驱动的泵，用于供应加压流体以通过工具控制阀实施致动器。 发动机具有多个输出条件，每个具有不同的输出转矩特性。 控制系统包括伺服机构，其包括联接到泵的用于改变其每个循环位移的伺服致动器部分，用于通过来自固定排量泵的流体压力操作伺服驱动部分的伺服阀部分和用于致动伺服阀部分的控制部分。 伺服机构控制部分由转矩控制阀流体操作，该转矩控制阀将可控程度的流体压力从固定排量泵传递到控制部分，以便相应地改变可变排量泵的转矩要求。 扭矩控制阀由与能够检测发动机运行的每个输出状态的传感器相关联的控制器电磁操作，使得泵的扭矩需求被控制以适合于感测到的发动机的输出状态。 伺服机构控制部进一步在排水传感器的控制下，有效地根据从工具控制阀排出的流体的流量来控制泵的排量。

公开(公告)号：US4498847A

公开(公告)日：1985-02-12

申请号：US508100

申请日：1983-06-27

Applicant: Teruo Akiyama

Inventor： Teruo Akiyama

IPC: E02F9/22 ,  F04B49/00 ,  F04B49/08

CPC classification number: F04B49/002 ,  E02F9/2239 ,  E02F9/2292 ,  E02F9/2296 ,  F04B49/08 ,  F04B2201/1204

Abstract: A control system for variable displacement hydraulic pumps for use in a hydraulically operated construction vehicle having a fixed displacement hydraulic pump, a plurality of reducing valves operatively interlocked with work implement control valve units of the vehicle disposed on the delivery sides of the variable displacement pumps, control sections for controlling respective flow rate of the variable displacement pumps and equipment for exerting delivery pressures of both the fixed and variable displacement pumps and output pressure of the reducing valve on the control units. The control system exhibits three control functions, i.e., flow control for varying the angle of the swash plate of the variable displacement pump in proportion to the manipulating position of the respective work implement controlling valve, constant torque control in proportion to the delivery pressures of the variable displacement pumps, and cut-off control for reducing relief losses.

Abstract translation: 一种用于具有固定排量液压泵的液压操作建筑车辆中的可变排量液压泵的控制系统，与设置在可变排量泵的输送侧的车辆的工作装置控制阀单元可操作地联锁的多个减压阀， 用于控制可变排量泵的各个流量的控制部分和用于施加固定和可变排量泵的输送压力的设备和控制单元上的减压阀的输出压力。 控制系统具有三个控制功能，即，用于根据各个作业工具控制阀的操纵位置成比例地改变可变排量泵的斜板的角度的流量控制，与转子的输送压力成比例的恒定转矩控制 可变排量泵，以及用于减少泄放损失的截止控制。

公开(公告)号：US20040018097A1

公开(公告)日：2004-01-29

申请号：US10441236

申请日：2003-05-20

Inventor： Yoshiihiro Ochiai

IPC: F04B001/26

CPC classification number: F04B27/1804 ,  F04B49/065 ,  F04B2201/0201 ,  F04B2201/1202 ,  F04B2201/1204

Abstract: A variable displacement compressor includes a plate having a variable inclination angle, and a piston engaging the plate. The piston reciprocates within a bore of the compressor in accordance with a rotation of the plate, and the piston has a stroke length which is determined by the inclination angle of the plate. The compressor also includes a sensor positioned adjacent to the piston. The sensor generates an output signal when a predetermined portion of the piston is aligned with the sensor. The compressor also includes a processing unit operationally coupled to the sensor. The processing unit estimates the inclination angle of the plate based on the output signal from the sensor.

Abstract translation: 可变排量压缩机包括具有可变倾斜角的板和与板接合的活塞。 活塞根据板的旋转而在压缩机的孔内往复运动，并且活塞具有由板的倾斜角确定的冲程长度。 压缩机还包括邻近活塞定位的传感器。 当活塞的预定部分与传感器对准时，传感器产生输出信号。 压缩机还包括可操作地耦合到传感器的处理单元。 处理单元基于来自传感器的输出信号估计板的倾斜角度。

公开(公告)号：US06623247B2

公开(公告)日：2003-09-23

申请号：US09858738

申请日：2001-05-16

Applicant: Hongliu Du

Inventor： Hongliu Du

IPC: F04B4900

CPC classification number: F04B49/065 ,  F04B1/324 ,  F04B2201/1203 ,  F04B2201/1204 ,  F04B2201/1205 ,  F04B2203/0208 ,  F04B2203/0604 ,  F04B2205/05

Abstract: A method and apparatus for controlling a variable displacement hydraulic pump having a swashplate pivotally attached to the pump. The method and apparatus includes determining a desired swashplate angle as a function of a power limit of the pump, determining an actual swashplate angle, determining a value of discharge pressure of the pump, moving a servo valve spool to a desired position as a function of the desired swashplate angle, the actual swashplate angle and the discharge pressure, and responsively moving the swashplate to the desired swashplate angle position.

公开(公告)号：US5562424A

公开(公告)日：1996-10-08

申请号：US527134

申请日：1995-09-12

Applicant: Noah D. Manring

Inventor： Noah D. Manring

IPC: F04B49/08

CPC classification number: F04B49/08 ,  F04B2201/1202 ,  F04B2201/1204

Abstract: A pump displacement control for a variable displacement pump includes a torque control valve serially disposed between a remotely controllable displacement control valve and a variable torque limiter in axial alignment within a common bore. A displacement control sleeve is disposed within the bore for normally controlling the fluid pressure in an actuating chamber of an actuator connected to a swashplate of the pump when the pump discharge pressure is below a predetermined high pressure. The torque control valve assumes control of pump displacement when the pump discharge pressure exceeds the predetermined high pressure and includes a sleeve and a valve spool movable relative to each other to establish a first condition communicating discharge pressure into the actuator chamber to move the swashplate toward a minimum displacement position or a second condition communicating the actuating chamber with an exhaust passage so that the swashplate is moved toward its maximum displacement position. A feedback piston continuously subjected to pump discharge pressure moves the valve spool in a direction to establish the first condition when discharge pressure exceeds the predetermined high pressure. The feedback piston is disposed in axial alignment with the valve spool within an insert disposed within the displacement control sleeve. The predetermined high pressure is varied by increasing or decreasing the level of a control pressure directed into a bore receiving a piston acting on the opposite end of the valve spool.

Abstract translation: 用于可变排量泵的泵排量控制器包括串联地设置在可控位移控制阀和在公共孔内轴向对准的可变扭矩限制器之间的扭矩控制阀。 位移控制套筒设置在孔内，用于当泵排出压力低于预定高压时，正常地控制连接到泵的斜盘的致动器的致动室中的流体压力。 当泵排出压力超过预定的高压时，转矩控制阀采取泵排量的控制，并且包括可相对于彼此移动的套筒和阀芯，以建立将排出压力连接到致动器室中的第一状态，以使斜盘朝向 最小位移位置或使致动室与排气通道相通的第二条件，使得斜盘向其最大位移位置移动。 连续经受泵排出压力的反馈活塞在排出压力超过预定高压时使阀芯沿一个方向移动以建立第一条件。 所述反馈活塞在位于所述位移控制套筒内的插入件内与所述阀芯轴向对准地设置。 预定的高压通过增加或减小引导到接收作用在阀芯的相对端上的活塞的孔中的控制压力的水平来改变。

公开(公告)号：US5507624A

公开(公告)日：1996-04-16

申请号：US365514

申请日：1994-12-28

Applicant: Berthold A. Fehn

Inventor： Berthold A. Fehn

IPC: F04B13/00 ,  F04B15/02 ,  F04B49/06 ,  G01F11/02 ,  F04B53/00

CPC classification number: G01F11/029 ,  F04B13/00 ,  F04B15/02 ,  F04B49/065 ,  F04B2201/0201 ,  F04B2201/0202 ,  F04B2201/0209 ,  F04B2201/06012 ,  F04B2201/1204 ,  F04B2203/0901 ,  F04B2203/0902 ,  F04B2203/0903 ,  F04B2203/091 ,  F04B2205/05 ,  Y10S417/90

Abstract: The present invention is a sludge pump system which includes a means for monitoring operation of a sludge pump. The sludge pump includes a material cylinder and a piston moveable in the material cylinder. A pump drive moves the piston during working cycles which include a pumping stroke and a filling stroke. A pump valve mechanism connects the material cylinder to an outlet during pumping strokes and connects the material cylinder to an inlet during filling strokes. A means for monitoring operation of the pump is provided. The means for monitoring includes a means for sensing a first parameter related to operation of the pump drive, a means for sensing a second parameter indicative of operation of the piston, and a means for determining errors in the operation of the pump based upon the first parameter and the second parameter.

Abstract translation: 本发明是一种污泥泵系统，其包括用于监测污泥泵的操作的装置。 污泥泵包括可在料筒中移动的料筒和活塞。 泵驱动器在包括泵送冲程和填充冲程的工作循环期间移动活塞。 泵阀机构在泵送冲程期间将材料筒连接到出口，并且在填充冲程期间将材料筒连接到入口。 提供了一种用于监测泵的操作的装置。 用于监测的装置包括用于感测与泵驱动器的操作相关的第一参数的装置，用于感测指示活塞的操作的第二参数的装置，以及用于基于第一个来确定泵的操作中的误差的装置 参数和第二个参数。