公开(公告)号：EP1658441A4

公开(公告)日：2009-10-21

申请号：EP04781053

申请日：2004-08-13

Applicant: MOOG INC

Inventor： POLCUCH ERIC A

IPC: F15B11/08 ,  B64C13/40 ,  F15B11/044

CPC classification number: B64C13/40 ,  F15B11/0445 ,  F15B2211/50536 ,  F15B2211/528 ,  F15B2211/55 ,  F15B2211/575 ,  F15B2211/7058 ,  F15B2211/76

公开(公告)号：EP1286057A4

公开(公告)日：2009-08-19

申请号：EP02700600

申请日：2002-02-18

Applicant: HITACHI CONSTRUCTION MACHINERY

Inventor： ARIGA NOBUEI ,  SUGIYAMA GENROKU ,  TANAKA HIDEAKI ,  TOYOOKA TSUKASA ,  EGASHIRA MASAKI ,  OOKI TAKATOSHI

IPC: F15B11/02 ,  E02F9/22 ,  F04B23/06 ,  F04B49/08 ,  F15B11/16 ,  F15B11/17

CPC classification number: F15B11/17 ,  E02F9/2232 ,  E02F9/2235 ,  E02F9/2292 ,  E02F9/2296 ,  F04B23/06 ,  F04B49/08 ,  F15B11/165 ,  F15B2211/20553 ,  F15B2211/20584 ,  F15B2211/3052 ,  F15B2211/30525 ,  F15B2211/3059 ,  F15B2211/3116 ,  F15B2211/31576 ,  F15B2211/6054 ,  F15B2211/6055 ,  F15B2211/6309 ,  F15B2211/6343 ,  F15B2211/6656 ,  F15B2211/7051 ,  F15B2211/7058 ,  F15B2211/7135 ,  F15B2211/781

Abstract: A hydraulic circuit of construction machinery, wherein, when three hydraulic pumps are used, the displacement volumes of first and second hydraulic pumps are controlled based on the discharge pressures P1 and P2 of the first and second hydraulic pumps and a discharge pressure P3' obtained by reducing the discharge pressure P3 of a third hydraulic pump by a pressure reducing valve (14) and the displacement volume of the third hydraulic pump (3) is controlled only by the discharge pressure of the third hydraulic pump (3) so that one of the three hydraulic pumps is not affected by the variation of torque of the other hydraulic pumps, whereby a stable flow can be assured by preventing the pressure oil discharged from the third hydraulic pump (3) from being affected by the variation of the discharged flow from the first and second hydraulic pumps (1) and (2), i.e., by the variation of a torque consumption.

公开(公告)号：EP2048370A1

公开(公告)日：2009-04-15

申请号：EP07742724.3

申请日：2007-05-01

Applicant: Nabtesco Corporation

Inventor： YATABE, Michiaki

IPC: F15B11/02 ,  E02F9/22

CPC classification number: E02F9/2225 ,  E02F9/128 ,  F15B7/008 ,  F15B2211/7058 ,  F15B2211/75 ,  F16H61/4061 ,  F16H61/4148 ,  F16H61/4157 ,  F16H61/423

Abstract: A hydraulic motor 11 is switched to a high-speed mode when pressure oil is supplied to a pressure chamber 23 of a tilt piston 17 based on the transmission of a speed signal to a high-low speed switching valve 18, and the hydraulic motor 11 is switched to a low-speed mode when pressure oil is discharged from the pressure chamber 23 of the tilt piston 17. A first braking purpose speed changing mechanism 13 operates so as to discharge pressure oil from the pressure chamber 23 of the tilt piston 17 when the pressure of pressure oil between a counterbalance valve 15 and a direction changeover valve 103 becomes equal to a tank pressure. Therefore, it is possible to provide a variable hydraulic motor driving device which is capable of preventing braking operation from being excessively long and also capable of preventing a large shock from occurring at a time of stoppage due to a large braking force generated from an early stage of braking operation.

Abstract translation: 当压力油基于向低速切换阀18传递速度信号而向倾斜活塞17的压力室23供给压力油时，液压马达11切换到高速模式，液压马达11 当压力油从倾斜活塞17的压力室23排出时，切换到低速模式。第一制动用变速机构13操作以便从倾斜活塞17的压力室23排出压力油时， 平衡阀15和方向切换阀103之间的压力油的压力等于油箱压力。 因此，可以提供一种能够防止制动操作过长的可变液压马达驱动装置，并且还能够防止由于从早期产生的大的制动力而在停止时发生大的冲击 的制动操作。

公开(公告)号：EP2022989A1

公开(公告)日：2009-02-11

申请号：EP07739036.7

申请日：2007-03-20

Applicant: Komatsu, Ltd. ,  Komatsu Utility Co., Ltd.

Inventor： NAGATSUKA, Isao ,  ITOU, Sinichi

IPC: F15B11/08 ,  E02F9/22 ,  F15B11/02 ,  F15B11/17

CPC classification number: F15B11/166 ,  E02F9/2225 ,  E02F9/2239 ,  E02F9/2285 ,  E02F9/2292 ,  F15B2211/20523 ,  F15B2211/20553 ,  F15B2211/625 ,  F15B2211/6316 ,  F15B2211/6355 ,  F15B2211/6653 ,  F15B2211/67 ,  F15B2211/7058 ,  F15B2211/71 ,  F15B2211/75 ,  F15B2211/85

Abstract: The operation control circuit of the present invention reduces the speed of an actuator, such as a rotation motor, according to reduction in the rotational speed of an engine. When the engine rotational speed is at its maximum, a pilot pressure in a pilot conduit is set to a relief pressure of a relief valve. When the engine rotational speed is reduced, the flow rate of pilot pressure hydraulic fluid decreases, and the pressure difference over a throttle section becomes smaller than the relief pressure, so that the pilot pressure is set to the pressure difference. In this case, even if the operator operates an operation lever to a full stroke position so as to supply pilot pressure hydraulic fluid to a spool valve for rotation, the spool valve does not go to the fully opened state, since the pressure is low. As a result, the flow rate of hydraulic fluid supplied to the rotation motor is reduced, so that the speed of rotation is reduced.

Abstract translation: 本发明的操作控制电路根据发动机的转速的降低来降低诸如旋转电动机的致动器的速度。 当发动机转速处于其最大值时，先导管中的先导压力被设定为溢流阀的溢流压力。 当发动机转速降低时，先导压力液压流体的流量减少，并且节流部分上的压差变得小于溢流压力，从而将先导压力设定为压力差。 在这种情况下，即使操作者将操作杆操作到全行程位置，以将先导压力液压流体供给到滑阀旋转，由于压力低，滑阀不会进入完全打开状态。 结果，供应到旋转马达的液压流体的流量减小，从而减小旋转速度。

公开(公告)号：EP1304487B1

公开(公告)日：2009-01-14

申请号：EP02023185.8

申请日：2002-10-16

Applicant: DEERE & COMPANY

Inventor： Link, Todd Allen ,  Harber, Neil Vincent

IPC: F15B11/16

CPC classification number: F15B11/162 ,  F15B2211/20515 ,  F15B2211/214 ,  F15B2211/3116 ,  F15B2211/329 ,  F15B2211/50518 ,  F15B2211/5154 ,  F15B2211/55 ,  F15B2211/6355 ,  F15B2211/7058 ,  F15B2211/71

公开(公告)号：EP1988294A2

公开(公告)日：2008-11-05

申请号：EP08103655.0

申请日：2008-04-22

Applicant: Robert Bosch GmbH

Inventor： Dantlgraber, Jörg ,  Bauer, Richard ,  Mark, Alexander ,  Försterling, Heino

IPC: F15B1/02 ,  F15B11/072

CPC classification number: F15B11/0725 ,  B60K6/12 ,  F15B11/06 ,  F15B2211/20546 ,  F15B2211/20569 ,  F15B2211/214 ,  F15B2211/216 ,  F15B2211/30505 ,  F15B2211/62 ,  F15B2211/625 ,  F15B2211/7058 ,  F15B2211/8855 ,  Y02T10/6208

Abstract: Offenbart ist ein hydraulisch-pneumatischer Antrieb für zumindest einen Verbraucher (2), mit einem pneumatisch-hydraulischen Wandler (12,70,76,80), über den in zumindest einem Druckgasspeicher (16) gespeicherte Energie in hydraulische Energie umsetzbar und zum Antrieb des hydraulischen Verbrauchers (2) verwendbar ist und über den hydraulische Energie des Verbrauchers (2) in pneumatische Energie umsetzbar ist, wobei zumindest ein dem Druckgasspeicher (16) zugeordneter Wärmespeicher (18,20,34,50,58) dem warmen Druckgas beim Befüllen des Druckgasspeichers Wärmeenergie entnimmt und/oder dem Druckgas bei der Entnahme Wärmeenergie zuführt.

Abstract translation: 驱动器（1）具有气动液压换能器（12），其将存储在压缩气体存储器（16）中的能量转换成液压能量，其中使用气动 - 液压换能器来驱动液压负载。 气动液压传感器将负载的液压能量转换成气动能。 蓄热器（18）附接到压缩气体储存器，其中蓄热器在填充压缩气体储存器期间获得热压缩气体，并且在移除期间供应热能。

公开(公告)号：EP1711714B1

公开(公告)日：2008-06-11

申请号：EP04801211.6

申请日：2004-12-08

Applicant: Hydac Fluidtechnik GmbH

Inventor： THIRY, Gerd, Anton ,  HOFFMANN, Alois ,  BÄR, Harald

IPC: F15B11/044 ,  F15B11/16 ,  F15B11/20

CPC classification number: F15B11/0445 ,  F15B11/162 ,  F15B11/20 ,  F15B2211/30505 ,  F15B2211/3051 ,  F15B2211/30525 ,  F15B2211/3055 ,  F15B2211/327 ,  F15B2211/40515 ,  F15B2211/426 ,  F15B2211/455 ,  F15B2211/50518 ,  F15B2211/50536 ,  F15B2211/5151 ,  F15B2211/55 ,  F15B2211/575 ,  F15B2211/6055 ,  F15B2211/7053 ,  F15B2211/7058 ,  F15B2211/71 ,  F15B2211/781

Abstract: The invention relates to a circuit arrangement comprising a load sensing system (LS) wherein individual loads (10,14) are arranged in series, forming a series section, and in parallel, forming a parallel section, in a hydraulic supply circuit (12) comprising at least one supply pump (P) and a runback (16) for fluid, the load sensing system (LS) determining the highest load pressure in both the series section and parallel section. The loads of the parallel section can be actuated independently from the pressure level of the loads of the series section due to the fact that the respectively highest load pressure is transferred as a control pressure to a valve unit (18) in such a way that, as long as the load pressure of the parallel section is higher than the load pressure of the series section, the valve unit restricts the runback (16) for fluid so much that the pressure of the supply pump (P) matches or exceeds the pressure required in the parallel section. In this way, a sufficient fluid pressure for the respective load in the parallel section is ensured independently of the number of loads in the series section.

公开(公告)号：EP1898104A1

公开(公告)日：2008-03-12

申请号：EP06714701.7

申请日：2006-02-27

Applicant: Shin Caterpillar Mitsubishi Ltd.

Inventor： TOZAWA, Shoji C/O SHIN CATERPILLAR MITSUBISHI ,  BINNAKA, Madoka C/O SHIN CATERPILLAR MITSUBISHI ,  FURUTA, Hideto C/O SHIN CATERPILLAR MITSUBISHI

IPC: F15B21/14 ,  E02F9/22 ,  F15B11/16

CPC classification number: F15B21/14 ,  E02F9/2075 ,  E02F9/2217 ,  E02F9/2225 ,  E02F9/2239 ,  E02F9/2246 ,  E02F9/2292 ,  E02F9/2296 ,  F15B11/024 ,  F15B11/17 ,  F15B2211/20515 ,  F15B2211/20523 ,  F15B2211/20546 ,  F15B2211/20576 ,  F15B2211/265 ,  F15B2211/7053 ,  F15B2211/7058 ,  F15B2211/88

Abstract: A hydraulic circuit that enables smooth absorption of the energy of a return fluid from a hydraulic actuator by means of an energy recovery motor, as well as stable functioning of the hydraulic actuator, is provided.
A return fluid passage 55 to which the fluid discharged from a boom cylinder 8bmc is branched is provided at the tank passage side of a solenoid valve 49 of a boom control circuit 45. The return fluid passage 55 comprises two return passages 56,57, which are provided with a flow rate ratio control valve 58,59 for controlling a ratio of fluid that branches off into the return passages 56,57. The flow rate ratio control valve 58,59 is comprised of a solenoid valve 58 disposed in the return passage 56, which is provided with an energy recovery motor 26, and a solenoid valve 59 disposed in the return passage 57, which branches off the upstream side of the solenoid valve 58.

Abstract translation: 提供了一种液压回路，其能够通过能量回收电机平稳地吸收来自液压致动器的返回流体的能量以及液压致动器的稳定功能。 在动臂控制回路45的电磁阀49的油箱通道侧设置有从动臂油缸8bmc排出的流体分流的返回流体通道55.返回流体通道55包括两个返回通道56,57， 设有流量比控制阀58,59，用于控制分支到回流通道56,57中的流体的比例。 流量比控制阀58,59包括设置在回流通道56中的电磁阀58，该回路通道56设有能量回收电机26和设置在回流通道57中的电磁阀59，该电磁阀59从上游 电磁阀58的一侧。

公开(公告)号：EP1875042A1

公开(公告)日：2008-01-09

申请号：EP06725912.7

申请日：2006-04-11

Applicant: Sandvik Mining and Construction Oy

Inventor： PELTONEN, Vesa

IPC: E21B44/06 ,  F15B11/16

CPC classification number: E21B44/06 ,  F15B11/165 ,  F15B2211/20546 ,  F15B2211/20576 ,  F15B2211/251 ,  F15B2211/30525 ,  F15B2211/3127 ,  F15B2211/3144 ,  F15B2211/31576 ,  F15B2211/329 ,  F15B2211/50554 ,  F15B2211/50572 ,  F15B2211/6054 ,  F15B2211/6057 ,  F15B2211/7058 ,  Y10T137/7837 ,  Y10T137/86574

Abstract: A method, arrangement and valve for controlling rock drilling. In the method, a pressure difference acting across a rotation motor (20) is used to regulate a separate feed regulating valve (30), which, on the basis of this, regulates control pressures of a feed control valve. The arrangement comprises a separate feed regulating valve (30), which, under the influence of the pressure difference acting across the rotation motor (20), regulates control pressures of a feed control valve (7). The valve (30) comprises a separate retarding element (39), which slows down the returning of a spool (30a) of the valve (30) to the normal position, if the spool (30a) has moved away from its normal position under the influence of the pressure difference acting across the rotation motor (20).

公开(公告)号：EP1477686B1

公开(公告)日：2007-10-17

申请号：EP04252812.5

申请日：2004-05-14

Applicant: KOBELCO CONSTRUCTION MACHINERY CO., LTD.

Inventor： Toji, Yutaka Kobelco Construc. Machinery Co.Ltd.

IPC: F15B11/16 ,  F15B20/00 ,  E02F9/22

CPC classification number: F15B20/008 ,  E02F9/2228 ,  E02F9/2235 ,  E02F9/226 ,  E02F9/2285 ,  E02F9/2296 ,  F15B11/165 ,  F15B20/00 ,  F15B21/08 ,  F15B2211/20553 ,  F15B2211/20576 ,  F15B2211/20584 ,  F15B2211/20592 ,  F15B2211/30505 ,  F15B2211/30525 ,  F15B2211/3056 ,  F15B2211/3111 ,  F15B2211/3127 ,  F15B2211/3144 ,  F15B2211/31511 ,  F15B2211/31576 ,  F15B2211/329 ,  F15B2211/355 ,  F15B2211/45 ,  F15B2211/5753 ,  F15B2211/63 ,  F15B2211/6346 ,  F15B2211/6355 ,  F15B2211/6653 ,  F15B2211/7053 ,  F15B2211/7058 ,  F15B2211/71 ,  F15B2211/8623 ,  F15B2211/8626 ,  F15B2211/87 ,  F15B2211/8752 ,  F15B2211/8755