公开(公告)号：EP3191716B1

公开(公告)日：2018-11-21

申请号：EP15756469.1

申请日：2015-07-15

申请人： Walvoil S.p.A.

发明人： MUSIANI, Massimiliano ,  MESTURINI, Davide

IPC分类号： F15B11/00

CPC分类号： F15B11/16 ,  E02F3/325 ,  E02F9/2267 ,  E02F9/2271 ,  F15B11/003 ,  F15B13/01 ,  F15B2211/30515 ,  F15B2211/329 ,  F15B2211/355 ,  F15B2211/6355

摘要： Hydraulic system, distributor and bidirectional valve to activate the hydraulic actuators (3; 3a, 3b) of an operating machine; the hydraulic system (1) having: a first high-pressure oil delivery (4); an oil drain (8); a slide valve with a spool, which is axially sliding and is suited to control a hydraulic actuator (3); a second low-pressure oil delivery (6); an activation valve (15); and a bidirectional valve (21) with a first passage opening (22) that can be hydraulically connected, by the slide valve (9) to the first delivery (4) and a second passage opening (23) hydraulically connected to the actuator (3); wherein, the bidirectional valve has an inlet opening (24) that can be connected, by the activation valve (15) to the second delivery (6) and an outlet opening (25) that can be connected, by the spool (12) to the drain (8).

公开(公告)号：EP3339516A3

公开(公告)日：2018-10-24

申请号：EP17209836.0

申请日：2017-12-21

申请人： CNH Industrial Italia S.p.A.

发明人： Berggren, Quinton ,  Lewis, Brady D. ,  Natzke, David R. ,  Newlin, Timothy A. ,  Szurpicki, Paul F. ,  Grossman, Allan ,  Detra, Neil

IPC分类号： E02F3/96 ,  E02F9/22 ,  F15B11/046 ,  B62D49/06 ,  E02F9/20 ,  F15B11/08 ,  F15B13/02 ,  F15B21/02 ,  G05B13/02

CPC分类号： E02F9/2225 ,  B62D49/06 ,  E02F3/96 ,  E02F3/961 ,  E02F9/2004 ,  E02F9/22 ,  E02F9/2235 ,  E02F9/2267 ,  E02F9/2271 ,  F15B11/046 ,  F15B11/08 ,  F15B13/022 ,  F15B21/02 ,  G05B19/46 ,  G05B2219/41273 ,  G05B2219/45017

摘要： A dual mode control system for a work vehicle includes a hydraulic system configured to drive a loader assembly and a dozer assembly coupled to the work vehicle. The hydraulic system includes a fluid delivery system comprising a plurality of flow paths fluidly coupled to a hydraulic pump. The hydraulic system includes a valve assembly configured to regulate diversion of fluid into a first and a second hydraulic cylinders coupled to the fluid delivery system to adjust the loader assembly, or into a third cylinder coupled to the fluid delivery system to adjust the dozer assembly. The dual mode control system also includes a controller operably coupled to the valve assembly, and one or more user interfaces coupled to the controller to enable an operator to provide inputs to cause the controller to adjust the valve assembly, and to thereby adjust the loader assembly or the dozer assembly.

公开(公告)号：EP3228812B1

公开(公告)日：2018-08-01

申请号：EP16164496.8

申请日：2016-04-08

申请人： BAUER Spezialtiefbau GmbH

发明人： Wiedenmann, Ulli ,  Schröppel, Christoph ,  Bellato, Diego

IPC分类号： B08B3/02 ,  B08B15/02 ,  E02D15/06 ,  E02F5/00 ,  E02F9/20 ,  E02F9/22 ,  E02F3/90 ,  E02F9/06

CPC分类号： E02D15/06 ,  B08B3/02 ,  B08B15/026 ,  E02D2250/0023 ,  E02D2250/0076 ,  E02D2300/0018 ,  E02F3/90 ,  E02F5/006 ,  E02F9/06 ,  E02F9/2016 ,  E02F9/2271

公开(公告)号：EP3203088A4

公开(公告)日：2018-05-30

申请号：EP15845887

申请日：2015-09-29

申请人： HITACHI CONSTRUCTION MACH CO

发明人： HIJIKATA SEIJI ,  ISHIKAWA KOUJI ,  IMURA SHINYA

IPC分类号： F15B21/14 ,  E02F9/22 ,  F15B11/02 ,  F15B11/044 ,  F15B11/05 ,  F15B11/08 ,  F15B11/16 ,  F15B21/08

CPC分类号： F15B21/14 ,  E02F3/32 ,  E02F9/2004 ,  E02F9/22 ,  E02F9/2217 ,  E02F9/2232 ,  E02F9/2267 ,  E02F9/2271 ,  E02F9/2285 ,  E02F9/2296 ,  F15B11/044 ,  F15B11/05 ,  F15B11/16 ,  F15B21/087 ,  F15B2211/20546 ,  F15B2211/3058 ,  F15B2211/30595 ,  F15B2211/40515 ,  F15B2211/41581 ,  F15B2211/426 ,  F15B2211/428 ,  F15B2211/455 ,  F15B2211/46 ,  F15B2211/50518 ,  F15B2211/5159 ,  F15B2211/6309 ,  F15B2211/6313 ,  F15B2211/6316 ,  F15B2211/6336 ,  F15B2211/6652 ,  F15B2211/6654 ,  F15B2211/6658 ,  F15B2211/7053 ,  F15B2211/71 ,  F15B2211/7142 ,  F15B2211/761 ,  F15B2211/88

摘要： Provided is a hydraulic drive system for a work machine configured with a single solenoid proportional valve for a regeneration circuit, wherein substantially the same actuator speed can be secured irrespective of whether or not hydraulic fluid discharged from a hydraulic actuator is regenerated for driving of another hydraulic actuator. The hydraulic drive system includes: a regeneration line that connects a bottom-side hydraulic chamber of a hydraulic cylinder 4 to a portion between a hydraulic pump device 50 and a second hydraulic actuator 8, and a regeneration flow rate adjustment device that supplies, at an adjusted flow rate, at least part of the discharged hydraulic fluid to a portion between the hydraulic pump device 50 and the second hydraulic actuator; a discharge flow rate adjustment device that discharges, at an adjusted flow rate, the discharged hydraulic fluid to a tank; one electric drive device 22 that simultaneously controls the regeneration flow rate adjustment device and the discharge flow rate adjustment device; and a control unit 27 that outputs a control command to the electric drive device in such a manner that falling speed of a first driven body does not vary significantly, irrespective of the magnitude of the regeneration flow rate caused by the regeneration flow rate adjustment device.

公开(公告)号：EP3323946A1

公开(公告)日：2018-05-23

申请号：EP16824756.7

申请日：2016-07-15

申请人： Doosan Infracore Co., Ltd.

发明人： CHO, Young Shik ,  JUNG, Woo Yong

IPC分类号： E02F9/20 ,  E02F9/22

CPC分类号： E02F9/22 ,  E02F9/20 ,  E02F9/2004 ,  E02F9/2271 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296 ,  F15B11/17 ,  F15B2211/20576 ,  F15B2211/6651 ,  F15B2211/71

摘要： Disclosed are a construction machine and a method of controlling a construction machine. The construction machine includes: a first pump and a second pump; an engine which provides available torque to the first pump and the second pump; a first joystick and a second joystick which control actuators operated by a working fluid discharged from the first pump and the second pump; a joystick operation amount acquiring unit which acquires operation amounts of the first joystick and the second joystick; and a control unit which adjusts a torque distribution ratio with respect to the first pump and the second pump in accordance with the operation amounts of the first joystick and the second joystick when a sum of required torque of the first pump and required torque of the second pump is higher than the available torque.

公开(公告)号：EP3149342A4

公开(公告)日：2018-04-11

申请号：EP15802457

申请日：2015-06-02

申请人： PROJECT PHOENIX LLC

发明人： AFSHARI THOMAS

IPC分类号： F04C11/00 ,  F04C2/18 ,  F04C15/00 ,  F04C15/06 ,  F04C28/08 ,  F15B11/10 ,  F15B15/18

CPC分类号： F15B11/10 ,  E02F3/425 ,  E02F9/2271 ,  F04C2/14 ,  F04C2/18 ,  F04C15/008 ,  F04C15/06 ,  F04C28/08 ,  F04C2240/40 ,  F04C2240/402 ,  F04C2240/603 ,  F15B1/26 ,  F15B11/003 ,  F15B15/14 ,  F15B15/18 ,  F15B2211/2053 ,  F15B2211/275 ,  F15B2211/3057 ,  F15B2211/41563 ,  F15B2211/41572 ,  F15B2211/5157 ,  F15B2211/5158 ,  F15B2211/6306 ,  F15B2211/632 ,  F15B2211/6323 ,  F15B2211/6343 ,  F15B2211/6651 ,  F15B2211/6652 ,  F15B2211/6653 ,  F15B2211/6654 ,  F15B2211/6656 ,  F15B2211/7053 ,  F15B2211/7054 ,  F15B2211/75 ,  F15B2211/76

摘要： A linear actuator system includes a linear actuator and an integrated pump assembly connected to the linear actuator to provide fluid to operate the linear actuator. The integrated pump assembly includes a pump with two fluid drivers, each fluid driver comprising a prime mover and a fluid displacement assembly to be driven by the prime mover such that fluid is transferred from a first port of the pump to a second port of the pump. The pump assembly also includes two valve assembles to isolate the pump from the system. The linear actuator system also includes a controller that establishes the pump in a normal mode of operation in which the prime movers are independently driven and switches to a fail-safe mode of operation in which only one prime mover is operated.

公开(公告)号：EP2350399B1

公开(公告)日：2018-04-11

申请号：EP09745190.0

申请日：2009-10-19

申请人： Clark Equipment Company

发明人： ST. AUBIN, Joseph, A. ,  KOCH, Rodney ,  ASCHE, Jason ,  HOESEL, Jeret, L. ,  VANDERLINDE, Todd, M.

IPC分类号： F15B11/044 ,  F15B13/02 ,  E02F9/22

CPC分类号： E02F9/2203 ,  E02F9/2267 ,  E02F9/2271 ,  F15B11/0445 ,  F15B13/027 ,  F15B2211/353 ,  F15B2211/473

摘要： A hydraulic circuit for an actuator that has a piston and piston rod that will move a load in a first direction, and which can be externally loaded in an opposite direction, includes a flow compensated valve between the actuator and a control valve. When the piston in the actuator is moved in the second opposite direction under the external load and the rate of flow of fluid out of the actuator through the flow compensated valve exceeds a selected rate, an orifice is introduced in the flow path to restrict flow from the actuator.

公开(公告)号：EP3272948A1

公开(公告)日：2018-01-24

申请号：EP16764750.2

申请日：2016-03-04

申请人： Yanmar Co., Ltd.

发明人： MIYAZAKI, Yoshihiro ,  IKEDA, Takahiro ,  KURODA, Takaaki ,  SEINO, Hideki

IPC分类号： E02F9/16 ,  E02F9/00

CPC分类号： E02F9/2271 ,  E02F9/006 ,  E02F9/16

摘要： A work vehicle such as a backhoe having a cabin disposed on one side of excavator equipment and a tank unit disposed on the other side of the excavator equipment involves a problem that versatility is poor when a boom bracket constitutes a lower part of a side wall of the cabin, and in addition, even when the boom bracket is formed as a member separate from the cabin, a component part of the cabin needs to be removed at a time of replacement of a boom fulcrum pin, etc. Provided is a backhoe 1 including: excavator equipment 4 provided with a first boom 20 having its proximal end portion 20a coupled to a rotatable boom fulcrum pin 45; a cabin 8 disposed on one side of the excavator equipment 4; and a tank unit 9 disposed on the other side of the excavator equipment 4, wherein the excavator equipment 4 and the cabin 8 are formed as separate members, and a right side wall 8A of the cabin 8 on the excavator equipment 4 side has a work hole 49 opened therein, such that the boom fulcrum pin 45 is installable and removable through the work hole 49 by inserting and extracting the boom fulcrum pin 45 from the cabin 8 side into and out of a cylindrical body 75 having the proximal end portion 20A fixed thereto.

摘要翻译： 在挖掘机设备的一侧设置有驾驶室的反铲挖掘机和设置在挖掘机设备的另一侧的箱单元的作业车辆存在悬臂支架构成挖掘机的侧壁的下部时的通用性差的问题 另外，即使当悬臂支架形成为与驾驶室分离的构件时，在更换悬臂支点销等时也需要移除驾驶室的组成部分。只要是反铲挖掘机1 包括：设置有第一悬臂20的挖掘机设备4，其第一悬臂20的近端部分20a联接到可旋转悬臂支点销45; 布置在挖掘机设备4的一侧上的驾驶室8; 以及设置在挖掘机设备4的另一侧上的箱体单元9，其中挖掘机设备4和箱体8形成为单独的构件，并且在挖掘机设备4侧的驾驶室8的右侧壁8A具有工作 通过将吊杆支点销45从车室8侧插入拔出固定有基端部20A的筒状体75，从而能够通过工作孔49装卸吊杆支点销45 于此。

公开(公告)号：EP2813309B1

公开(公告)日：2018-01-17

申请号：EP14171734.8

申请日：2014-06-10

申请人： Demolition and Recycling Equipment B.V.

发明人： De Gier, Gertrudis Maria Gerardus

IPC分类号： B23D17/00 ,  E02F3/96 ,  F15B20/00 ,  F15B11/024

CPC分类号： F15B15/149 ,  E02F3/965 ,  E02F9/2267 ,  E02F9/2271 ,  F15B11/022 ,  F15B11/024 ,  F15B13/0401 ,  F15B20/007 ,  F15B2011/0243 ,  F15B2211/30505 ,  F15B2211/3058 ,  F15B2211/329 ,  F15B2211/355 ,  F15B2211/50518 ,  F15B2211/5153 ,  F15B2211/55 ,  F15B2211/775 ,  F15B2211/8636 ,  F15B2211/8752

摘要： The invention relates to a hydraulic cylinder 20, for example for use in a hydraulic tool, comprising at least one piston/cylinder combination composed of a cylinder body and a piston 14a accommodated in said cylinder body and provided with a piston rod 14 that projects from said cylinder body, wherein the cylinder body and the piston body define a first cylinder chamber 21a while the cylinder body, the piston body and the piston rod define a second cylinder chamber 21b, and wherein during operation the piston performs alternating forward and return operational cycles under the influence of a fluidum under pressure that is conducted to the first and the second cylinder chamber through a first and a second line, respectively, and a control valve 24 which regulates the supply of a fluid under pressure through the first or the second line to the piston/cylinder combination. The invention has for its object to provide an improved actuating cylinder as described above which immediately acts on the hydraulic system in the event of the emergency situations sketched above and which prevents permanent damage to the various components. According to the invention, the hydraulic cylinder is for this purpose characterised in that it comprises a safety valve 40 which is passive in a first position and which in a second position, if the pressure in the second cylinder chamber is higher than a preset load pressure, connects the second cylinder chamber to the first cylinder chamber via a differential valve 30 .

公开(公告)号：EP3244069A4

公开(公告)日：2017-12-27

申请号：EP15877077

申请日：2015-12-25

申请人： SUMITOMO HEAVY INDUSTRIES

发明人： OKADA JUNICHI ,  ITOH TAKUMI

IPC分类号： F15B11/028 ,  E02F3/32 ,  E02F3/43 ,  E02F9/22 ,  F15B11/04

CPC分类号： E02F3/435 ,  E02F3/32 ,  E02F9/2004 ,  E02F9/2203 ,  E02F9/2221 ,  E02F9/2271 ,  F15B11/028 ,  F15B11/04 ,  F15B2211/6309 ,  F15B2211/6313 ,  F15B2211/6326 ,  F15B2211/6346

摘要： [Object] To provide a construction machine that can prevent reduction in work efficiency even in work where a large reaction force is applied to a point of application. [Solution] A hydraulic cylinder drives a working part. A hydraulic circuit supplies hydraulic oil to the hydraulic cylinder. A pressure sensor measures the pressure of the hydraulic oil supplied to the hydraulic cylinder. An input device is operated by an operator. A controller includes a thrust controller that controls the hydraulic cylinder based on the thrust of the hydraulic cylinder. The thrust controller calculates a required thrust value based on an operation amount of the input device, and obtains a thrust measurement of the thrust of the hydraulic cylinder based on the pressure measured by the pressure sensor. The thrust controller controls the hydraulic circuit such that a thrust difference between the required thrust value and the thrust measurement is minimized.