公开(公告)号：US07665579B2

公开(公告)日：2010-02-23

申请号：US11342593

申请日：2006-01-31

Applicant: Masakazu Itose

Inventor： Masakazu Itose

IPC: B66F9/22 ,  F15B11/04 ,  F01B1/06 ,  B66B9/04 ,  F16K17/26

CPC classification number: B66F9/22 ,  F15B11/042 ,  F15B11/0445 ,  F15B13/0402 ,  F15B2211/30505 ,  F15B2211/30525 ,  F15B2211/3111 ,  F15B2211/353 ,  F15B2211/365 ,  F15B2211/50518 ,  F15B2211/50554 ,  F15B2211/5153 ,  F15B2211/7052 ,  Y10T137/7765 ,  Y10T137/7766 ,  Y10T137/7776 ,  Y10T137/7777

Abstract: A flow control valve includes a pressure compensating valve and a first switching valve. The pressure compensating valve is configured to enlarge an opening area of a variable orifice between a load pressure line and a compensating pressure line when a pressure of working fluid of the compensating pressure line is smaller than a first set pressure, and narrow the opening area of the variable orifice when the pressure of the working fluid of the compensating pressure line is larger than the first set pressure. The first switching valve is configured to switch between a meter-out operation and a neutral operation by an external operation, wherein the working fluid of the compensating pressure line is drained in the meter-out operation, the working fluid of the compensating pressure line is not drained in the neutral operation. The load pressure line guides the working fluid to be supplied to an actuator.

Abstract translation: 流量控制阀包括压力补偿阀和第一切换阀。 压力补偿阀被配置为当补偿压力线的工作流体的压力小于第一设定压力时，扩大负载压力线和补偿压力线之间的可变孔口的开口面积，并且使开口面积变窄 当补偿压力线的工作流体的压力大于第一设定压力时，可变孔口。 第一切换阀构成为通过外部动作在排出运转和中立运转之间切换，其中补偿压力管线的工作流体在排出运转中排出，补偿压力线的工作流体为 在中性操作中不排水。 负载压力线引导要供应到致动器的工作流体。

公开(公告)号：US20090120386A1

公开(公告)日：2009-05-14

申请号：US11922835

申请日：2006-07-06

Applicant: Mitsuhiko Kamado ,  Shigeru Yamamoto ,  Tomohiro Nakagawa

Inventor： Mitsuhiko Kamado ,  Shigeru Yamamoto ,  Tomohiro Nakagawa

IPC: F01P7/04 ,  F15B11/04

CPC classification number: F01P7/044 ,  F01P5/043

Abstract: An invention relating to a control apparatus and a control method for a hydraulically driven cooling fan for reducing the peak pressure produced upon reversing the switch position of a switching valve, without stopping an engine, and without greatly modifying existing hydraulic circuitry or increasing the apparatus cost. In the invention, in the case that a reversing switch has been operated so as to output a reversal processing commencement instruction signal, control is carried out such that, under the condition that the rotational speed of the engine has decreased to not more than a stipulated rotational speed, capacity adjusting means is controlled, so as to reduce the capacity of a hydraulic pump, and thus reduce the fan rotational speed, and then the switch position of the switching valve is reversed.

Abstract translation: 一种用于液压驱动的冷却风扇的控制装置和控制方法的发明，用于在不停止发动机的情况下减小在切换阀的开关位置反转时产生的峰值压力，并且不会大大改变现有的液压回路或增加设备成本 。 在本发明中，在反转开关被操作以输出反转处理开始指示信号的情况下，进行控制，使得在发动机的转速降低到规定值以下的条件下 旋转速度，容量调节装置被控制，以便降低液压泵的容量，从而降低风扇转速，然后切换阀的开关位置反转。

公开(公告)号：US07308789B2

公开(公告)日：2007-12-18

申请号：US10878869

申请日：2004-06-28

Applicant: Jeong Kyu Lee

Inventor： Jeong Kyu Lee

IPC: F15B21/08 ,  F15B11/04 ,  F15B11/028 ,  E02F9/22

CPC classification number: F15B21/087 ,  E02F9/2207 ,  F15B11/0406 ,  F15B2211/20553 ,  F15B2211/20576 ,  F15B2211/255 ,  F15B2211/30525 ,  F15B2211/329 ,  F15B2211/6313 ,  F15B2211/7053 ,  F15B2211/8616

Abstract: The present invention discloses a hydraulic cylinder suspension method for actively controlling shock-induced vibration when a hydraulic cylinder in a construction vehicle makes a sudden stop, the method comprising the steps of: determining whether the hydraulic cylinder makes a sudden stop; receiving a pressure signal; determining an operational direction of the hydraulic cylinder during a sudden stop of the hydraulic cylinder; and supplying hydraulic fluid to large and small chambers of the hydraulic cylinder or returning to a tank.

Abstract translation: 本发明公开了一种液压缸悬架方法，用于当施工车辆中的液压缸突然停止时主动控制冲击引起的振动，该方法包括以下步骤：确定液压缸是否突然停止; 接收压力信号; 在液压缸突然停止期间确定液压缸的操作方向; 并且将液压流体供应到液压缸的大小室或返回到罐。

公开(公告)号：US5865453A

公开(公告)日：1999-02-02

申请号：US867722

申请日：1997-06-03

Applicant: Kenji Harada ,  Hirohiko Morikawa ,  Tomomasa Yoshida

Inventor： Kenji Harada ,  Hirohiko Morikawa ,  Tomomasa Yoshida

IPC: B60G17/04 ,  B60G17/015 ,  B60G17/056 ,  F15B11/04 ,  F15B13/01 ,  F15B20/00 ,  B60G17/08

CPC classification number: B60G17/056 ,  B60G17/0152 ,  F15B13/01 ,  F15B20/00

Abstract: When oil is discharged from an actuator 11i for lowering a vehicle height, an actuator pressure Pa is higher than a pump pressure Pp so that a differential pressure valve 41 slides its valving element 42 to the left by a pressure difference. A valving element seal portion 42b, abutted against a seat face 43a closing an opening of a lower return conduit 40b, moves from seat face 43a and open to lower return conduit 40b. As a result, the closure of the connected portion in the lower return conduit 40b is opened. Thus, the passage of a return conduit 40 is opened. Then, the oil from the actuator 11i is discharged via the return conduit 40 to the reserve tank 16 while receiving less flow resistance by avoiding a passage through any solenoid valve.

Abstract translation: 当油从用于降低车辆高度的致动器11i排出时，致动器压力Pa高于泵压力Pp，使得差压阀41将其阀元件42向左滑动压力差。 与封闭下返回导管40b的开口的座面43a抵接的阀元件密封部42b从座面43a移动并向下返回导管40b开口。 结果，打开下回路导管40b中连接部分的闭合。 因此，打开回流导管40的通道。 然后，通过避开通过任何电磁阀的通道，来自致动器11i的油通过返回导管40排出到储存罐16，同时接收较少的流动阻力。

公开(公告)号：USRE36022E

公开(公告)日：1999-01-05

申请号：US812870

申请日：1997-03-06

Applicant: Roy W. Blain

Inventor： Roy W. Blain

IPC: B66B1/24 ,  B66B1/26 ,  B66B9/04 ,  F15B11/04 ,  F15B13/043 ,  G05D7/06

CPC classification number: G05D7/0623 ,  B66B1/26 ,  Y10T137/2589

Abstract: A hydraulic elevator up direction control system is provided that has a circulating valve connected between the supply and the return of a source that normally supplies pressure to the cylinder of an elevator. The circulating valve is controlled by a computer regulated stepless variable solenoid valve that influences the pilot fluid pressure in the operating chamber of the circulation valve to control the size of the opening of the circulating valve and thereby the volume of fluid passing through the circulating valve. This affects inversely the volume of fluid passing through a fluid flow measuring valve, to the cylinder, to provide selectably variable up speeds of travel facilitating a fast, smooth, accurate ride of the elevator car as it approaches a stopping point relative to an upper floor of a building. Such operation is substantially independent of the system pressure and fluid viscosity. A selectably variable speed down direction control system operates on largely the same principle.

Abstract translation: 提供一种液压升降方向控制系统，其具有连接在通常将电压提供给电梯的气缸的源的供应和返回之间的循环阀。 循环阀由计算机调节的无级变量电磁阀控制，其影响循环阀的操作室中的先导流体压力，以控制循环阀的开度，从而控制流过循环阀的流体体积。 这反过来影响通过流体流量测量阀到气缸的流体的体积，以提供可选择地变化的行进速度，便于电梯轿厢接近相对于上层的停止点快速，平稳，准确地骑行 的建筑物。 这种操作基本上与系统压力和流体粘度无关。 可选择的可变速度下降方向控制系统以大致相同的原理运行。

公开(公告)号：US5746056A

公开(公告)日：1998-05-05

申请号：US720398

申请日：1996-09-30

Applicant: David P. Smith

Inventor： David P. Smith

IPC: F15B11/04 ,  F16H61/42 ,  F16H61/421 ,  F16H61/46 ,  F16H61/465 ,  F16D31/02

CPC classification number: F16H61/421 ,  F16H61/423 ,  F16H61/433 ,  F16H61/465

Abstract: An overspeed control for a hydrostatic transmission of a mobile machine includes a speed control valve arrangement connected to a fixed displacement pump through a supply line and to a pressure responsive displacement controller of a variable displacement hydraulic pump of the transmission. An overspeed control valve is connected to the supply line and is operative for reducing the fluid pressure level in the displacement controller when the speed control valve arrangement is in an operative position and the rotational speed of the engine exceeds a predetermined level. This reduces the displacement of the variable displacement pump (which acts as a motor in a downhill situation) and thus increasing engine retarding and transmission losses for preventing the positive grade from accelerating the machine, engine and/or the components of the hydrostatic transmission to speeds exceeding their designed limits.

Abstract translation: 用于移动机械的静液压传动的超速控制器包括速度控制阀装置，其通过供应管线连接到固定排量的泵，并连接到变速器的可变排量液压泵的压力响应位移控制器。 超速控制阀连接到供应管线，并且当速度控制阀装置处于操作位置并且发动机的转速超过预定水平时可操作以减小排量控制器中的流体压力水平。 这减小了可变排量泵（在下坡情况下作为电动机）的位移，从而增加发动机减速和变速器损失，以防止正级别将机器，发动机和/或静液压变速器的部件加速到速度 超过设计限制。

公开(公告)号：US5606901A

公开(公告)日：1997-03-04

申请号：US436373

申请日：1995-05-22

Applicant: Isao Oki

Inventor： Isao Oki

IPC: B66C23/86 ,  E02F9/12 ,  E02F9/22 ,  F15B11/04 ,  F15B11/08 ,  B66C13/20

CPC classification number: E02F9/128 ,  E02F9/123 ,  Y10T137/8671 ,  Y10T137/87177

Abstract: A turning-purpose hydraulic circuit characterized in that a discharge passage (20a) of a hydraulic pump (20) is connected to a variable relief valve (21) and a pump port of a directional switching valve (22); a first actuator port and a second actuator port (25, 26) of the said directional switching valve are connected to a turning-purpose hydraulic motor (27); the pilot pressure of a pilot valve (33) is introduced into pressure chambers (31, 32) for controlling a spool in the said directional switching valve and is also introduced into a pressure chamber (40) for controlling a set pressure in the said variable relief valve; a metering-in side portion (42) along which a pressurized oil flows from the said pump port of the said spool to the first or second actuator port is formed with a portion having a configuration such that a flow force may not be produced thereat; and a metering-out side portion (45) along which the pressurized oil flows from the first or second actuator port of the said spool to a tank port is formed with a portion having a configuration such that a flow force may be produced thereat.

Abstract translation: PCT No.PCT / JP93 / 01781 Sec。 371日期：1995年5月22日 102（e）日期1995年5月22日PCT提交1993年12月8日PCT公布。 第WO94 / 13960号公报 日期1994年6月23日一种转向用液压回路，其特征在于液压泵（20）的排出通路（20a）连接到可变溢流阀（21）和方向切换阀（22）的泵口。 所述方向切换阀的第一致动器端口和第二致动器端口（25,26）连接到转向用液压马达（27）; 先导阀（33）的先导压力被引入到用于控制所述方向切换阀中的阀芯的压力室（31,32）中，并且还被引入到用于控制所述变量中的设定压力的压力室（40） 安全阀; 加压油从所述卷轴的所述泵口流到所述第一或第二致动器端口的计量侧部分（42）形成有具有不会在其上产生流动力的构造的部分; 以及压力油从所述卷轴的第一或第二致动器端口流到罐口的计量输出侧部分（45）形成有具有可以在其上产生流动力的构造的部分。

公开(公告)号：US5584224A

公开(公告)日：1996-12-17

申请号：US541091

申请日：1995-10-11

Applicant: Anthony R. Davies ,  Stephen J. Downward ,  Michael J. Wallace

Inventor： Anthony R. Davies ,  Stephen J. Downward ,  Michael J. Wallace

IPC: B66F17/00 ,  B66B1/04 ,  B66F9/22 ,  F15B11/04 ,  F15B11/048 ,  F15B13/16

CPC classification number: B66B1/24 ,  F15B11/048 ,  F15B2211/20515 ,  F15B2211/27 ,  F15B2211/30505 ,  F15B2211/31529 ,  F15B2211/40576 ,  F15B2211/413 ,  F15B2211/41581 ,  F15B2211/426 ,  F15B2211/465 ,  F15B2211/6336 ,  F15B2211/665 ,  F15B2211/6651 ,  F15B2211/6654 ,  F15B2211/7052 ,  F15B2211/755

Abstract: An hydraulic lift system has an actuator connected to an hydraulic circuit, having a pump, via a supply line. A balanced seated valve is connected between the supply line and a reservoir, the valve being controlled by a solenoid and an electric drive unit. The drive unit supplies a gradually increasing or decreasing voltage to the solenoid to open or close the valve gradually. The valve has a valve member that is displaceable along its length and has a valve head of frusto-conical shape. A passage along the valve member balances fluid pressure across the valve member. The solenoid has an armature with a pole face that can be displaced towards a fixed pole face to unseat the valve member. The pole faces have complementary frusto-conical surfaces and there is a non-magnetic washer between them.

Abstract translation: 液压提升系统具有经由供应管线连接到具有泵的液压回路的致动器。 平衡阀座连接在供油管路和油箱之间，阀门由螺线管和电动驱动单元控制。 驱动单元向螺线管逐渐增加或减小电压，逐渐打开或关闭阀门。 该阀具有可沿其长度移动并具有截头圆锥形形状的阀头的阀构件。 沿着阀构件的通道平衡阀构件上的流体压力。 螺线管具有带有极面的电枢，该电极可以朝向固定极面移动以使阀构件脱离。 极面具有互补的截头圆锥形表面，并且它们之间有非磁性垫圈。

公开(公告)号：US5355772A

公开(公告)日：1994-10-18

申请号：US903723

申请日：1992-06-24

Applicant: Takamichi Shimada ,  Yoshikazu Ishikawa ,  Kouji Yamaguchi

Inventor： Takamichi Shimada ,  Yoshikazu Ishikawa ,  Kouji Yamaguchi

IPC: F15B11/04 ,  F15B13/043 ,  F16H61/40 ,  F16H61/421 ,  F16H63/06 ,  F16H63/28 ,  F15B15/17 ,  F15B13/044

CPC classification number: F16H61/425 ,  F16H61/42

Abstract: A hydraulic servo unit for changing the swash plate angle of a continuously variable transmission to vary its speed reduction ratio comprises a cylinder whose chamber is divided into a rod-side chamber and a head-side chamber by a piston slidably fitted therein. The rod-side chamber is supplied with working oil under predetermined hydraulic pressure through a first hydraulic pressure supply passage. A second hydraulic pressure supply passage is connected to the head-side chamber through a duty-cycle-controlled first solenoid-operated valve, and a drain hydraulic passage is connected to the second hydraulic pressure supply passage through a second duty-cycle-controlled solenoid-operated valve. The first and second solenoid-operated valves are simultaneously actuated with different duty cycles. The difference between the different duty ratios is varied to vary the rate at which the working oil flows into or out of the head-side chamber through the second hydraulic pressure supply passage, in a wide range from a very low rate to a high rate. The working oil can accurately be controlled especially in a very low rate range for operating the hydraulic servo unit at very low speed. Therefore, continuously variable transmission can precisely and smoothly be controlled for varying the speed reduction ratio.

Abstract translation: 用于改变无级变速器的斜盘角度以改变其减速比的液压伺服单元包括一个气缸，其腔室通过可滑动地装配在其中的活塞分成杆侧室和头侧室。 杆侧室通过第一液压供给通道在预定液压下供给工作油。 第二液压供给通道通过占空比控制的第一电磁阀连接到头侧室，并且排水液压通道通过第二占空比控制螺线管连接到第二液压供给通道 操作阀。 第一和第二电磁阀同时由不同的占空比驱动。 改变不同占空比之间的差异，以便在从低速率到高速率的宽范围内改变工作油通过第二液压供给通道流入或流出头侧室的速率。 工作油可以精确地控制，特别是在非常低的速率范围内，以非常低的速度操作液压伺服单元。 因此，可以精确平稳地控制无级变速器，以改变减速比​​。

公开(公告)号：US5289388A

公开(公告)日：1994-02-22

申请号：US341580

申请日：1989-04-21

Applicant: Mohamed E. Dahroug ,  Yehia M. El-Ibiary ,  Rajamouli Gunda ,  Paul M. Smith ,  Randall G. Silverthorn

Inventor： Mohamed E. Dahroug ,  Yehia M. El-Ibiary ,  Rajamouli Gunda ,  Paul M. Smith ,  Randall G. Silverthorn

IPC: F15B11/00 ,  B22D17/32 ,  B29C45/77 ,  F15B11/04 ,  F15B21/02 ,  G05B11/36 ,  G05B19/05 ,  G05B19/416 ,  G06F15/20

CPC classification number: G05B19/416 ,  B22D17/32 ,  G05B2219/34215 ,  G05B2219/35312 ,  G05B2219/36171 ,  G05B2219/36513 ,  G05B2219/37133 ,  G05B2219/37313 ,  G05B2219/37333 ,  G05B2219/37399 ,  G05B2219/41301 ,  G05B2219/42123 ,  G05B2219/45244

Abstract: In a die casting machine that includes a shot cylinder having a ram for injecting metal into a die cavity, an electrohydraulic system for controlling operation of the shot cylinder includes an actuator coupled to the shot cylinder ram. A valve supplies hydraulic fluid to the actuator cylinder as a function of valve control signals. Microprocessor-based digital control electronics includes memory for storing a desired ram velocity profile as an incremental function of ram position. The control circuitry is responsive to signals from a sensor coupled to the actuator, indicative of position at the ram, for retrieving corresponding velocity signals from memory and supplying control signals to the valve as a function of such profile velocity signals. The control circuitry further includes facility for adjusting impact of the shot cylinder ram at the end of a cavity-filling stroke as a function of ram and actuator position and/or pressure, independently of the velocity/position profile, to reduce separation and flashing at the die cavity, and to reduce impact wear and fatigue on the overall die casting machine. A keyboard and associated operator display provide operator programmability and selection from a plurality of velocity/position profiles. The actuator and cylinder ram may be advanced in a manual mode of operation for adjustment and calibration proposes. A display associated with the keyboard graphically illustrates desired and actual velocity/position profiles during operation, together with a profile of actuator drive pressure verses position.

Abstract translation: 在包括具有用于将金属注入模腔的冲头的喷射缸的压铸机中，用于控制喷射气缸的操作的电动液压系统包括联接到喷射缸柱塞的致动器。 阀门作为阀门控制信号的一个功能，向致动器气缸提供液压油。 基于微处理器的数字控制电子设备包括用于存储期望的冲击速度轮廓作为推杆位置的增量功能的存储器。 控制电路响应来自耦合到致动器的传感器的信号，指示压头处的位置，用于从存储器检索对应的速度信号，并根据这种轮廓速度信号向阀提供控制信号。 控制电路还包括用于在空腔填充冲程结束时调节冲压缸压头的影响作为压头和致动器位置和/或压力的函数的功能，与速度/位置分布无关，以减少分离和闪烁 模腔，并减少整体压铸机的冲击磨损和疲劳。 键盘和相关联的操作者显示器提供操作员可编程性和从多个速度/位置轮廓中的选择。 致动器和气缸柱塞可以在手动操作模式下进行，以进行调整和校准。 与键盘相关联的显示器图形地示出了操作期间的期望和实际的速度/位置曲线，以及致动器驱动压力与位置的轮廓。