公开(公告)号：US09890800B2

公开(公告)日：2018-02-13

申请号：US15244566

申请日：2016-08-23

申请人： Kawasaki Jukogyo Kabushiki Kaisha

发明人： Atsuhiro Yoshimatsu

IPC分类号： F02D29/00 ,  F15B11/08 ,  F02M61/16

CPC分类号： F15B11/08 ,  B60W10/30 ,  B60Y2200/223 ,  F02D29/02 ,  F02M61/16

摘要： A mower includes an engine which is a power source for a drive wheel and a mowing mechanism. A drive system for the mower includes: a first control unit that controls operation and stop of the engine; a first power transmitting mechanism that performs transmission of power between the engine and the drive wheel; a second power transmitting mechanism that performs transmission of power between the engine and the mowing mechanism; and a second control unit that controls the second power transmitting mechanism. The first control unit also controls the first power transmitting mechanism. A signal transmitter is provided which transmits a control signal between the first control unit and the second control unit.

公开(公告)号：US20170359955A1

公开(公告)日：2017-12-21

申请号：US15677613

申请日：2017-08-15

申请人： MacDon Industries Ltd.

发明人： James Thomas Dunn ,  Graham Michael Leverick ,  Russell George Lyons ,  Bruce Robert Shearer

IPC分类号： A01D41/127 ,  F15B11/08 ,  F15B13/044 ,  A01B63/00 ,  F15B13/04 ,  A01B63/10

CPC分类号： A01D41/127 ,  A01B63/008 ,  A01B63/10 ,  A01D41/141 ,  F15B11/08 ,  F15B13/0401 ,  F15B13/044 ,  F15B2211/426 ,  F15B2211/526

摘要： In a crop harvesting machine there is provided a pair of hydraulic float cylinders for a header relative to a vehicle, where a float pressure to the cylinders is directly controlled by an electronic control supplying a variable control signal to a PPRR valve arrangement to maintain the float pressure at a predetermined value. At the set pressure a predetermined lifting force is provided to the header. A position sensor is used to generate an indication of movement and/or acceleration. The electronic control is arranged, in response to changes in the sensor signal, to temporarily change the control signal to vary the lifting force and thus change the dynamic response of the hydraulic float cylinder. In order to reduce static friction so that the system can react quickly, an arrangement is provided for causing relative reciprocating movement in an alternating wave pattern between the piston and cylinder.

公开(公告)号：US20170298898A1

公开(公告)日：2017-10-19

申请号：US15375255

申请日：2016-12-12

申请人： Leidos, Inc.

发明人： Steven C. Hench ,  Charles R. Fralick

IPC分类号： F03B13/20 ,  E02B9/08 ,  F15B11/08

CPC分类号： F03B13/20 ,  E02B9/08 ,  F05B2240/93 ,  F05B2260/406 ,  F15B11/08 ,  F15B2211/2053 ,  F15B2211/7058 ,  Y02E10/38

摘要： Wave energy conversion systems are provided utilizing a mass of water entrained in a collapsible water mass enclosure that is suspended beneath a float (e.g., a vehicle, buoy, platform, etc.) to provide an inertial force in opposition to the rising heave-induced acceleration of the float. The water mass enclosure is communication with a generator, such as by tethering one end of a tethering means to the generator and the other to the enclosure. The enclosure may be placed in communication with an intermediary hydraulic system, which is also in communication with the generator. In certain embodiments, the system will include a reel system for deploying and retrieving the water masse enclosure.

公开(公告)号：US20170292539A1

公开(公告)日：2017-10-12

申请号：US15629999

申请日：2017-06-22

申请人： NRG Spring Ltd.

发明人： Abraham Bauer ,  Yona Weiss ,  Yoram Fruehling

IPC分类号： F15B11/02 ,  F15B11/08 ,  B60K6/12 ,  F15B1/02 ,  F15B1/10

摘要： An energy storage and regeneration system that converts irregular, non-constant, and variable input power to regular, constant, and controlled output power using hydraulics whereby the irregular input power is used to pump hydraulic fluid into an accumulator array where it is stored pressurized. Energy is released in a controlled fashion using a hydraulic motor operated by the pressurized hydraulic fluid from the accumulator array, in accordance with the specified power demand. One or more power units may be deployed depending on the amount of energy required at the output. Each power unit includes a hydraulic motor and associated floating accumulator whose internal pressure is controlled to maintain a substantially constant pressure differential across its associated motor. The system can be integrated into various energy system sources including renewable energy such as wind, PV or thermal solar, wave, tidal, etc. as well as various types of vehicles such as cars, trucks, motorcycles, trains, boats, etc.

公开(公告)号：US20170247238A1

公开(公告)日：2017-08-31

申请号：US15506166

申请日：2015-08-25

申请人： DOOSAN CORPORATION

发明人： Byung Kwon LEE

IPC分类号： B66F9/22 ,  F15B13/02 ,  F15B11/08 ,  F15B1/02 ,  F15B13/04

CPC分类号： B66F9/22 ,  B66F9/06 ,  B66F9/075 ,  F15B1/021 ,  F15B11/08 ,  F15B13/024 ,  F15B13/0401

摘要： The present disclosure relates to a hydraulic circuit for a forklift, and more particularly, to a hydraulic circuit for a forklift which is capable of preventing an engine from being stopped due to surge pressure that instantaneously occurs when a lift cylinder reaches an end stroke and thus cannot be operated any further when the lift cylinder is extended. According to the hydraulic circuit for a forklift according to the exemplary embodiment of the present disclosure, which is configured as described above, the accumulator is provided on the hydraulic line through which the working fluid is provided to the lift cylinder, and as a result, the accumulator may quickly absorb surge pressure when the surge pressure is produced in the lift cylinder or the hydraulic line.

公开(公告)号：US20170218758A1

公开(公告)日：2017-08-03

申请号：US15500833

申请日：2015-07-20

申请人： SIEMENS AKTIENGESELLSCHAFT

发明人： Georg Bachmaier ,  Marco Cyriacks ,  Reinhard Freitag ,  Andreas Gödecke

IPC分类号： F01B3/00 ,  F15B13/044 ,  F15B13/04 ,  F04B17/04 ,  F15B11/08

摘要： The linear actuator comprises a double-chamber solenoid pump comprising at least one pump coil, a multi-way valve and at least one pump armature that can be moved by energizing the at least one pump coil and is provided with a switching armature by means of which the multi-way valve can be switched and which can be moved by energizing the at least one pump coil. In the method, both the switching armature and the pump armature are moved by energizing the pump coil.

公开(公告)号：US09719530B2

公开(公告)日：2017-08-01

申请号：US14783556

申请日：2014-04-09

申请人： TTControl GMBH

发明人： Marcus Specks ,  Marcus Pfeiffer ,  Stephan Grün ,  Reiner Vierkotten ,  Joseph Schnittker ,  Andreas Lehmann ,  Wolfgang Tebeek ,  Wolfgang Kemmetmüller ,  Johannes Henikl ,  Andreas Kugi

IPC分类号： F15B11/00 ,  E04G21/04 ,  F15B20/00 ,  F15B11/08

CPC分类号： F15B11/003 ,  E04G21/0436 ,  E04G21/0454 ,  E04G21/0463 ,  F15B11/08 ,  F15B20/005 ,  F15B2211/30515 ,  F15B2211/30565 ,  F15B2211/327 ,  F15B2211/8636 ,  F15B2211/8757

摘要： An electrohydraulic control circuit for driving a hydraulically actuated actuating element (5, 6), by means of which a segment (5.3) of a manipulator, in particular of a large manipulator for truck-mounted concrete pumps, can be adjusted in terms of its orientation, wherein there are provided an electrically driven first valve (2.4), which is connected to hydraulic working lines of the actuating element (5.6) for the drive thereof, and leak-free check valves (2.5, 2.6) provided in the working lines of the actuating element (5.6), which valves are arranged on the actuating element (5.6) or on the segment (5.3) associated with this actuating element (5.6) and can be released for the normal operation of the actuating element (5.6), wherein the release of the check valves (2.5, 2.6) is driven by an electronic control unit (ECU) separate from the first valve (2.4) and the check valves (2.5, 2.6).

公开(公告)号：US20170184139A1

公开(公告)日：2017-06-29

申请号：US15312959

申请日：2015-05-15

申请人： Parker-Hannifin Corporation

发明人： Vivek BHASKAR ,  Bjoern ERIKSSON ,  Ralf GOMM

IPC分类号： F15B21/08 ,  F15B13/02 ,  E02F9/20 ,  F15B19/00 ,  E02F9/22 ,  F15B11/08 ,  F15B13/04

CPC分类号： F15B21/087 ,  E02F3/32 ,  E02F9/2095 ,  E02F9/2203 ,  E02F9/2217 ,  E02F9/2228 ,  E02F9/2271 ,  E02F9/2289 ,  F15B7/006 ,  F15B11/024 ,  F15B11/08 ,  F15B13/028 ,  F15B13/0401 ,  F15B19/005 ,  F15B2211/20515 ,  F15B2211/20538 ,  F15B2211/20561 ,  F15B2211/27 ,  F15B2211/30515 ,  F15B2211/3052 ,  F15B2211/3058 ,  F15B2211/41581 ,  F15B2211/613 ,  F15B2211/63 ,  F15B2211/6336 ,  F15B2211/634 ,  F15B2211/6346 ,  F15B2211/7051 ,  F15B2211/7053 ,  F15B2211/761

摘要： An electro-hydraulic actuation system includes a regeneration valve in fluid communication with a first fluid chamber and a second fluid chamber of a hydraulic actuator, and a dump valve is in fluid communication with the second fluid chamber and a fluid reservoir. A pump provides a flow of fluid to the first and second fluid chambers, a displacement of the pump controlling a velocity of the actuator during motion in the retraction and extension directions. An electric motor drives the pump, and a controller controls a state of the regeneration valve and the dump valve. At least one feedback device senses a system condition and provides a respective feedback signal indicative of the sensed system condition to the controller, the controller responsive to the feedback signal to determine an occurrence of an over-center load condition and control a state of the regeneration valve and the dump valve in response to the occurrence to maintain the velocity of the actuator.

公开(公告)号：US20170175781A1

公开(公告)日：2017-06-22

申请号：US14971235

申请日：2015-12-16

申请人： DEERE & COMPANY

发明人： MICHAEL R. GRATTON ,  Aaron R. Kenkel

IPC分类号： F15B13/044 ,  E02F3/42 ,  E02F9/22 ,  F15B11/08 ,  F15B13/04

CPC分类号： F15B13/044 ,  E02F3/283 ,  E02F3/422 ,  E02F9/2228 ,  F15B11/08 ,  F15B13/0401 ,  F15B2211/30525 ,  F15B2211/3111 ,  F15B2211/327 ,  F15B2211/426 ,  F15B2211/6309 ,  F15B2211/6313 ,  F15B2211/6336 ,  F15B2211/6346 ,  F15B2211/665 ,  F15B2211/853

摘要： An electrohydraulic implement pressure cutoff system is disclosed that includes a pump, one or more hydraulic functions, at least one valve, sensors and control unit. The pump powers the functions, and the valves control flow between the pump and their associated function. The sensor readings indicate system parameters. The control unit receives the readings and controls the valves. When the readings indicate a function is at or beyond a threshold, the control unit closes the associated valve to prevent flow to or from that function. The sensors can be pressure, position or other types of sensors. Operator control signals can be provided to control the functions. When the readings indicate a function is at or beyond a threshold in a stalled direction and the operator signals keep commanding the function in the stalled direction, the control unit can close the associated valve regardless of the operator signals.

公开(公告)号：US20170159677A1

公开(公告)日：2017-06-08

申请号：US15366258

申请日：2016-12-01

申请人： Parker Hannifin Corporation

发明人： Bruce Besch ,  Kevin Koenigs

IPC分类号： F15B1/26 ,  F15B19/00 ,  F15B11/08

CPC分类号： F15B1/265 ,  F15B15/18 ,  F15B15/2807 ,  F15B19/005 ,  F15B2211/20515 ,  F15B2211/20561 ,  F15B2211/6336

摘要： An electrohydraulic actuator includes a reservoir tank having a bladder that separates hydraulic fluid from any air in the reservoir tank and includes a sensor system that detects when the hydraulic fluid is depleted from the reservoir tank.