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    CAPACITY CONTROL DEVICE IN VARIABLE CAPACITY HYDRAULIC PUMP
    132.
    发明授权
    CAPACITY CONTROL DEVICE IN VARIABLE CAPACITY HYDRAULIC PUMP 无效
    容量控制装置变流量液压泵

    公开(公告)号：EP0667452B1

    公开(公告)日：2001-01-03

    申请号：EP93923672.5

    申请日：1993-10-29

    Applicant: KABUSHIKI KAISHA KOMATSU SEISAKUSHO

    Inventor： ODA, Yosuke, Kawasaki Factory of Kabushiki Kaisha ,  SHIRAI, Kiyoshi, Kawasaki Fact.of Kabushiki Kaisha

    IPC: F04B49/00 ,  F04B49/08

    CPC classification number: F04B49/002 ,  F04B49/08 ,  F04B2201/1202 ,  F04B2205/05

    Abstract: A capacity control device in a variable capacity hydraulic pump comprising: a capacity control piston (6) provided with a large diameter chamber (7), for operating a capacity control member (5) of the variable capacity hydraulic pump (1) in a direction of decreasing or increasing the capacity by supplying or discharching pressure oil to or from said large diameter chamber (7); a first control valve (8) and a second control valve (9) for selectively allowing said large diameter chamber of said capacity control piston to communicate with a pump discharge path or a tank; said first control being set to a supply position by the pump discharge pressure and to a drain position by a spring linked with said capacity control piston through a feedback lever, and said second control valve being set to a first position for establishing communication between the pump discharge path and said large diameter chamber by the pump discharge pressure and to a second position for establishing communication between said large diameter chamber and said first control valve by negative pressure; wherein a flow sectional area of an oil path between said large diameter chamber and the pump discharge path or the tank is changed. With this arrangement, a change in the flow sectional area in an intermediate portion of the oil path can change the supply or discharge speed of the pump discharge pressure to the large diameter chamber of said capacity control piston, whereby the responsiveness of the capacity control of said variable hydraulic pump can be regulated, thereby improving the operability of a working machine.

    Pump displacement control for a variable displacement pump
    133.
    发明公开
    Pump displacement control for a variable displacement pump 失效
    FördermengenregelungfüreineVerdrängerpumpe

    公开(公告)号：EP0761966A2

    公开(公告)日：1997-03-12

    申请号：EP96111778.5

    申请日：1996-07-22

    Applicant: CATERPILLAR INC.

    Inventor： Childress, Dale B. ,  Manring, Noah D.

    IPC: F04B49/08

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

    Abstract: A pump displacement control (10) for a variable displacement pump (11) includes a torque control valve (26) disposed between a variable torque limiter (34) and a force applying device (60) disposed in axial alignment within a common bore (19). A sleeve (27) and a valve spool (29) are movable relative to each other to establish a first condition communicating discharge pressure into an actuator chamber (17) to move a swashplate (12) toward a minimum displacement position against the bias of a spring (16) or a second condition communicating the actuating chamber with an exhaust passage (23) to allow the spring to move the swashplate toward its maximum displacement position. A torque control piston (39) disposed between opposing springs (48,49) resiliently bias the valve spool in a direction to establish the second condition when control fluid is directed into a control chamber (46). Pump discharge pressure communicated into a pressure chamber (63) 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: 泵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朝向最小位移位置移动，或者将致动腔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靠阀芯的力，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。

    CAPACITY CONTROL DEVICE IN VARIABLE CAPACITY HYDRAULIC PUMP
    134.
    发明公开
    CAPACITY CONTROL DEVICE IN VARIABLE CAPACITY HYDRAULIC PUMP 无效
    KAPAZITÄTSREGELVORRICHTUNGFÜRHYDRAULISCHE PUMPE MITVERÄNDERLICHERFÖRDERMENGE。

    公开(公告)号：EP0667452A1

    公开(公告)日：1995-08-16

    申请号：EP93923672.5

    申请日：1993-10-29

    Applicant: KABUSHIKI KAISHA KOMATSU SEISAKUSHO

    Inventor： ODA, Yosuke, Kawasaki Factory of Kabushiki Kaisha ,  SHIRAI, Kiyoshi, Kawasaki Fact.of Kabushiki Kaisha

    IPC: F04B49/00 ,  F04B49/08

    CPC classification number: F04B49/002 ,  F04B49/08 ,  F04B2201/1202 ,  F04B2205/05

    Abstract: In, A capacity control device in a variable capacity hydraulic pump comprising: a capacity control piston (6) provided with a large diameter chamber (7), for operating a capacity control member (5) of the variable capacity hydraulic pump (1) in a direction of decreasing or increasing the capacity by supplying or discharching pressure oil to or from said large diameter chamber (7); a first control valve (8) and a second control valve (9) for selectively allowing said large diameter chamber of said capacity control piston to communicate with a pump discharge path or a tank; said first control being set to a supply position by the pump discharge pressure and to a drain position by a spring linked with said capacity control piston through a feedback lever, and said second control valve being set to a first position for establishing communication between the pump discharge path and said large diameter chamber by the pump discharge pressure and to a second position for establishing communication between said large diameter chamber and said first control valve by negative pressure; wherein a flow sectional area of an oil path between said large diameter chamber and the pump discharge path or the tank is changed. With this arrangement, a change in the flow sectional area in an intermediate portion of the oil path can change the supply or discharge speed of the pump discharge pressure to the large diameter chamber of said capacity control piston, whereby the responsiveness of the capacity control of said variable hydraulic pump can be regulated, thereby improving the operability of a working machine.

    Abstract translation: 一种变容量液压泵中的容量控制装置，包括：具有大直径室（7）的容量控制活塞（6），用于沿所述可变容量液压泵（1）的容量控制构件（5）的方向 通过向或从所述大直径腔室（7）供应压缩油或从所述大直径腔室（7）提供压力油来降低或增加容量; 第一控制阀（8）和第二控制阀（9），用于选择性地允许所述容量控制活塞的所述大直径室与泵排出路径或罐连通; 所述第一控制器通过泵排出压力设定在供给位置，并通过与所述容量控制活塞连接的弹簧通过反馈杆设置在排放位置，并且所述第二控制阀设置在第一位置，用于建立泵之间的连通 排出路径和所述大直径室，并且通过负压将所述大直径室和所述第一控制阀之间的连通建立到第二位置; 其特征在于，所述大直径室与所述泵排出路径或所述槽之间的油路的流路截面积发生变化。 通过这种布置，油路的中间部分的流动截面积的变化可以改变泵排出压力的供给或排出速度到所述容量控制活塞的大直径室，由此，容量控制的响应性 所述可变液压泵可调节，从而提高作业机械的可操作性。

    Fluid operated pump displacement control system
    135.
    发明公开
    Fluid operated pump displacement control system 失效
    FluidumbetriebenesPumpenverdrängungsregelungssystem。

    公开(公告)号：EP0156399A2

    公开(公告)日：1985-10-02

    申请号：EP85103852.1

    申请日：1985-03-29

    Applicant: KABUSHIKI KAISHA KOMATSU SEISAKUSHO

    Inventor： Akiyama, Teruo ,  Sasaki, Katsuyuki ,  Saigo, Takaichi

    IPC: F04B49/00 ,  F04B49/06

    CPC classification number: F04B49/06 ,  F04B49/002 ,  F04B49/08 ,  F04B2201/1201 ,  F04B2201/1202 ,  F04B2201/1204

    Abstract: In a fluid operated pump displacement control system wherein a self pressure is defined as a first control signal, an arbitrary switchable second control signal different from said first control signal is added to said first control signal, and a displacement is adapted to be switched to a displacement corresponding to a value of said second control signal as added to said first control signal.

    Abstract translation: 在其中将自身压力定义为第一控制信号的流体动力泵位移控制系统中，与所述第一控制信号不同的任意可切换的第二控制信号被添加到所述第一控制信号，并且位移适于切换到 相应于所述第二控制信号的值与所述第一控制信号相加的位移。

    압축기의 진동 방지 방법
    138.
    发明公开
    압축기의 진동 방지 방법 无效
    用于抑制压缩机振动的方法

    公开(公告)号：KR1020030090053A

    公开(公告)日：2003-11-28

    申请号：KR1020020028037

    申请日：2002-05-21

    Applicant: 주식회사 대유위니아

    Inventor： 최정진

    IPC: F04B39/00

    CPC classification number: F04B39/0027 ,  F04B49/06 ,  F04B51/00 ,  F04B2201/1202 ,  F04B2203/0206 ,  F04B2203/0207 ,  F04B2203/0209 ,  F04B2207/01 ,  F25B49/025

    Abstract: PURPOSE: A method for suppressing vibration in a compressor is provided to suppress generation of vibration of noise by offsetting part of rotation angle of a motor in which load torque is uneven and keep the motor to rotate at fixed RPM. CONSTITUTION: A method comprises the steps of: a step(S10,S20) measuring RPM of a motor to determine whether the RPM is kept to be fixed; a step(S30) measuring counter electromotive force signal, detected signal for a position of a rotor of the motor when the RPM of the motor is fixed; a step(S40,S50) determining whether the measured counter electromotive force signal is generated at intervals of 60 deg.; and a step(S60,S70,S80) controlling electric current applying timing of the motor following generation interval of the counter electromotive force signal. The electric current applying timing of the motor is accelerated when the counter electromotive force signal is generated later than 60 deg., delayed when the counter electromotive force signal is generated earlier than 60 deg., and kept when the electromotive force signal is generated steadily.

    Abstract translation: 目的：提供一种抑制压缩机振动的方法，通过抵消负载转矩不均的电动机的旋转角度的一部分来抑制噪声振动的产生，并使电动机以固定的RPM转动。 方法：一种方法包括以下步骤：步骤（S10，S20），测量电机的RPM，以确定RPM是否保持固定; 测量反电动势信号的步骤（S30），当马达的RPM固定时，检测到马达转子位置的信号; 确定测量的反电动势信号是否以60度的间隔产生的步骤（S40，S50）; 以及控制所述电动机的电流施加定时的步骤（S60，S70，S80），所述步骤是所述反电动势信号的发电间隔。 当反电动势信号产生晚于60度时，马达的电流施加定时被加速，当反电动势信号产生早于60度时延迟，并且当电动势信号稳定地产生时保持。

    PRESSURE PUMP PERFORMANCE MONITORING SYSTEM USING TORQUE MEASUREMENTS
    139.
    发明申请
    PRESSURE PUMP PERFORMANCE MONITORING SYSTEM USING TORQUE MEASUREMENTS 审中-公开
    使用扭矩测量的压力泵性能监测系统

    公开(公告)号：WO2018044293A1

    公开(公告)日：2018-03-08

    申请号：PCT/US2016/049682

    申请日：2016-08-31

    Applicant: HALLIBURTON ENERGY SERVICES, INC.

    Inventor： BEISEL, Joseph A

    IPC: F04B51/00

    CPC classification number: F04B51/00 ,  F04B49/065 ,  F04B49/10 ,  F04B2201/1202 ,  F04B2201/1208 ,  F04B2203/0207

    Abstract: A monitoring system may include a strain gauge, a position sensor, and a torque sensor. The strain gauge may measure strain in a chamber of the pressure pump and generate a strain signal representing the strain measurement. The position sensor may measure a position of a rotating member and generate a position signal representing the position measurement. The torque sensor may measure torque in a component of the pressure pump and generate a torque signal representing the torque measurement. The torque measurement may be used with the strain measurement and the position measurement to determine a condition of the pressure pump.

    Abstract translation: 监测系统可以包括应变仪，位置传感器和扭矩传感器。 应变仪可以测量压力泵室内的应变，并产生代表应变测量的应变信号。 位置传感器可以测量旋转构件的位置并且生成表示位置测量的位置信号。 扭矩传感器可以测量压力泵的部件中的扭矩并且生成表示扭矩测量值的扭矩信号。 扭矩测量可以与应变测量和位置测量一起使用，以确定压力泵的状态。

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