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公开(公告)号：US09951795B2
公开(公告)日：2018-04-24
申请号：US14668671
申请日：2015-03-25
Applicant: Caterpillar Inc.
Inventor： Tonglin Shang , Pengfei Ma , Dayao Chen , Jeremy Peterson , Emily Anne Morris
CPC classification number: F15B1/033 , E02F9/2217 , E02F9/2221 , E02F9/2242 , E02F9/2296 , F02N7/00 , F02N2200/10 , F15B1/024 , F15B13/02 , F15B21/14 , F15B2211/20523 , F15B2211/20569 , F15B2211/212 , F15B2211/6309 , F15B2211/6313 , F15B2211/6346 , F15B2211/6651 , F15B2211/7058 , F15B2211/851 , F15B2211/88
Abstract: Engine anti-idling and restart may be implemented in a machine having a power source, a movable work tool, a pump driven by the power source, an actuator receiving fluid from the pump and moving the work tool, a high-pressure fluid reservoir, and an assist motor operatively connected to the power source. Engine restart may include detecting operator input to start the power source, and fluidly connecting the fluid reservoir to the assist motor to assist in starting the power source in response to detecting the operator input. Prior to shutting down the power source during anti-idling, fluid from the pump may be input to the assist motor, pressurized and communicated to the high-pressure fluid reservoir in response to determining that idle condition exists and a reservoir charge pressure is less than a reservoir minimum restart pressure needed to restart the power source.
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公开(公告)号：US20180073945A1
公开(公告)日：2018-03-15
申请号：US15564479
申请日：2016-03-09
Applicant: Hitachi, Ltd.
Inventor： Takamasa KAI , Hiroyuki YAMADA , Saku EGAWA
CPC classification number: G01L1/2287 , E02F9/20 , E02F9/2221 , E02F9/26 , G01G3/1408 , G01G19/083 , G01L1/2218 , G01L5/0061 , G01N3/24
Abstract: External force acting on a hydraulic excavator bucket is calculated precisely. An external force measurement system for a work machine includes a hydraulic cylinder for driving a front unit of the work machine and a plurality of strain gauges for sensing strain amounts of a cylinder rod of the hydraulic cylinder. The plurality of strain gauges are formed of at least two sets of strain gauges. The at least two sets of strain gauges are arranged to oppose each other as viewed in an axial direction of the cylinder rod. The external force measurement system includes a load calculation section that is configured to calculate a load acting on the hydraulic cylinder based on difference between the strain amounts of the strain gauges arranged to oppose each other in each set.
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公开(公告)号：US20170183842A1
公开(公告)日：2017-06-29
申请号：US15375199
申请日：2016-12-12
Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.
Inventor： Ryouhei YAMASHITA , Shinya IMURA
CPC classification number: E02F3/435 , E02F3/32 , E02F3/425 , E02F3/963 , E02F9/2203 , E02F9/2221 , E02F9/226 , E02F9/2271 , E02F9/2282 , E02F9/2285 , E02F9/2296 , E02F9/265 , F15B11/08 , F15B13/0401 , F15B13/044 , F15B2211/20546 , F15B2211/40515
Abstract: A hydraulic control system for a construction machine has a hydraulic actuator that drives an arm, a meter-out channel through which hydraulic fluid discharged from the hydraulic actuator flows, a variable restrictor provided in the meter-out channel, an operating device, and a controller that controls an opening area of the variable restrictor. A posture calculation unit calculates an angle made by the arm with respect to a horizontal direction, a meter-out opening area calculation unit calculates the opening area of the variable restrictor based on the angle made by the arm with respect to the horizontal direction and a time rate of change of the angle, and a meter-out control unit outputs a command signal to a solenoid valve used for adjusting the opening area of the variable restrictor, based on the opening area of the variable restrictor calculated by the meter-out opening area calculation unit.
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公开(公告)号：US09593461B2
公开(公告)日：2017-03-14
申请号：US14280875
申请日：2014-05-19
Applicant: Caterpillar Inc.
Inventor： Joseph Leo Faivre , Nathaniel Steven Doy
CPC classification number: E02F3/844 , E02F3/7618 , E02F9/2221 , E02F9/2278 , F15B2211/3059 , F15B2211/6336 , F15B2211/7107 , F15B2211/782
Abstract: A control system for a machine is disclosed. The control system may have a first cylinder operatively connected between a first side of a work tool and an undercarriage of the machine, a second cylinder operatively connected between a second side of the work tool and the undercarriage of the machine, and one or more electro-hydraulic valves configured to selectively regulate flow of pressurized fluid to the cylinders. The control system may also have a controller configured to determine a difference between a desired pitch of the work tool and an actual pitch of the work tool, and compare the difference to a threshold value. The controller may also be configured to move the one or more electro-hydraulic valves to change the flow of pressurized fluid to at least one of the first and second cylinders to adjust the actual pitch of the work tool to the desired pitch, based on the comparison.
Abstract translation: 公开了一种用于机器的控制系统。 控制系统可以具有操作地连接在工作工具的第一侧和机器的底架之间的第一气缸，可操作地连接在工作工具的第二侧和机器的底架之间的第二气缸，以及一个或多个电 液压阀构造成选择性地调节加压流体到气缸的流动。 控制系统还可以具有控制器，其被配置为确定作业工具的期望间距与作业工具的实际间距之间的差异，并且将该差与阈值进行比较。 控制器还可以被配置为移动一个或多个电动液压阀，以将加压流体的流量改变到第一和第二气缸中的至少一个，以将工作工具的实际俯仰调整到所需的间距，基于 比较。
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公开(公告)号：US20170009424A1
公开(公告)日：2017-01-12
申请号：US15120559
申请日：2015-04-14
Applicant: HITACHI CONSTRUCTION MA CHINERY CO., LTD.
Inventor： Hidekazu MORIKI , Shinya IMURA , Kouji ISHIKAWA , Ryohei YAMASHITA
CPC classification number: E02F3/422 , E02F3/425 , E02F9/2221 , E02F9/2235 , E02F9/2242 , E02F9/2282 , E02F9/2285 , E02F9/2292 , E02F9/2296 , F15B11/17 , F15B13/06 , F15B2211/20576 , F15B2211/255 , F15B2211/265 , F15B2211/3059 , F15B2211/30595 , F15B2211/6652 , F15B2211/6654 , F15B2211/7051 , F15B2211/7135 , F15B2211/7142
Abstract: An object of the present invention is to provide a hydraulic control system for a work machine that is capable of reducing the loss caused by flow division while reducing a decrease in the speed of a hydraulic actuator due to a combined operation. The hydraulic control system for a work machine includes a first hydraulic actuator, one hydraulic pump, a second hydraulic actuator, and another hydraulic pump. The hydraulic control system further includes operating instruction detection means and pump flow control means. The operating instruction detection means detects that operating instructions are issued to the first hydraulic actuator and the second hydraulic actuator. The pump flow control means individually adjusts the delivery flow rate of the one hydraulic pump and the another hydraulic pump in accordance with operation amounts designated by the operating instructions for the first and second hydraulic actuators. When the first and second hydraulic actuators are simultaneously operated, the pump flow control means increases the delivery flow rate of the one hydraulic pump to a higher rate than when the first hydraulic actuator is operated and the second hydraulic actuator is not operated.
Abstract translation: 本发明的目的是提供一种用于作业机械的液压控制系统，其能够减少由于分流而引起的损失，同时减少了由于组合操作导致的液压致动器的速度的降低。 用于作业机械的液压控制系统包括第一液压致动器，一个液压泵，第二液压致动器和另一个液压泵。 液压控制系统还包括操作指令检测装置和泵流量控制装置。 操作指示检测装置检测到向第一液压致动器和第二液压致动器发出操作指令。 泵流量控制装置根据由第一和第二液压致动器的操作说明书指定的操作量单独地调节一个液压泵和另一个液压泵的输送流量。 当第一和第二液压致动器同时操作时，泵流量控制装置将一个液压泵的输送流量增加到比第一液压致动器被操作并且第二液压致动器不被操作时更高的速率。
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Patent Agency Ranking
公开(公告)号：US09518370B2
公开(公告)日：2016-12-13
申请号：US14741548
申请日：2015-06-17
Inventor： Hiroyuki Tsukamoto
CPC classification number: E02F3/425 , E02F3/32 , E02F3/435 , E02F9/2203 , E02F9/2221 , E02F9/226 , E02F9/2285 , E02F9/2292 , E02F9/265
Abstract: A shovel that performs excavation in accordance with a complex excavation operation including an arm or bucket closing operation and a boom raising operation includes an excavation operation detection part, a position detection part, a maximum allowable pressure calculation part, and a boom cylinder pressure control part. The excavation operation detection part detects that the complex excavation operation has been performed. The position detection part detects the position of the shovel. The maximum allowable pressure calculation part calculates the pressure of the contraction-side oil chamber of a boom cylinder corresponding to an excavation reaction force at a time when the shovel is lifted by the excavation reaction force as a maximum allowable pressure, based on the position of the shovel. The boom cylinder pressure control part controls the pressure of the contraction-side oil chamber not to exceed the maximum allowable pressure when the complex excavation operation is performed.
Abstract translation: 挖掘操作检测部，位置检测部，最大容许压力计算部以及动臂缸压力控制部，具有铲斗关闭动作和起重臂升降动作的复杂的挖掘动作， 。 挖掘作业检测部检测出已经进行了复杂的挖掘作业。 位置检测部检测铲子的位置。 最大允许压力计算部分根据挖掘反作用力将铲斗提升时的挖掘反作用力作为最大允许压力，计算起重臂缸体的收缩侧油室的压力， 铲子。 当执行复杂挖掘操作时，动臂缸压力控制部分控制收缩侧油室的压力不超过最大允许压力。
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公开(公告)号：US09464406B2
公开(公告)日：2016-10-11
申请号：US14238885
申请日：2013-04-12
Applicant: KOMATSU LTD.
Inventor： Toru Matsuyama , Yoshiki Kami , Masashi Ichihara
CPC classification number: E02F9/2033 , E02F3/28 , E02F3/435 , E02F9/2029 , E02F9/2221 , E02F9/2292 , E02F9/2296 , E02F9/262 , E02F9/265
Abstract: A construction machine has a work implement and a work implement operating device. The work implement has a boom, arm, and bucket. A limit velocity determining unit determines a limit velocity of the boom from the limit velocity of the entire work implement, the arm target velocity, and the bucket target velocity. The distance when the blade tip of the bucket is positioned outside of the design plane is a positive value and the velocity in a direction from inside of the design plane toward outside of the design plane is a positive value. The first limit condition includes a condition that the limit velocity of the boom is greater than the boom target velocity. When the first limit condition is satisfied, a work implement control unit controls the boom to match the limit velocity of the boom and controls the arm to match the arm target velocity.
Abstract translation: 施工机械具有作业工具和作业工具的操作装置。 工作台具有吊臂，手臂和铲斗。 极限速度确定单元根据整个作业工具的极限速度，臂目标速度和铲斗目标速度来确定起重臂的极限速度。 当铲斗的叶片尖端位于设计平面外部时的距离为正值，并且从设计平面内部到设计平面外侧的方向上的速度为正值。 第一极限条件包括起重臂的极限速度大于起重臂目标速度的条件。 当满足第一限制条件时，工作装置控制单元控制动臂以匹配动臂的极限速度并且控制臂以匹配手臂目标速度。
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公开(公告)号：US09340954B2
公开(公告)日：2016-05-17
申请号：US14492155
申请日：2014-09-22
Applicant: Deere & Company
Inventor： Eric Richard Anderson
CPC classification number: E02F9/2217 , A01G23/081 , B62D12/00 , E02F9/0841 , E02F9/2025 , E02F9/2221 , F15B11/024 , F15B21/14 , F15B2211/41 , F15B2211/455 , F15B2211/7107
Abstract: An articulated work vehicle with a regenerative hydraulic circuit may comprise a front chassis, a rear chassis, first and second hydraulic cylinders each with head and rod chambers and each pivotally connected to the front chassis and the rear chassis, and an articulation joint. The rod chamber of the second hydraulic cylinder may be hydraulically connected to the head chamber of the first hydraulic cylinder via a flow restrictor. The rod chamber of the second hydraulic cylinder may also be hydraulically connected to a hydraulic source via a check valve which is configured to allow hydraulic flow into the rod chamber of the second hydraulic cylinder. The articulation joint may pivotally connect the front chassis to the rear chassis. The articulation joint may be laterally positioned between the first hydraulic cylinder and the second hydraulic cylinder.
Abstract translation: 具有再生液压回路的铰接作业车辆可以包括前机架，后机架，每个具有头杆和杆室的第一和第二液压缸，并且每个可枢转地连接到前机架和后机架，以及铰接接头。 第二液压缸的杆室可以经由限流器液压地连接到第一液压缸的头部腔室。 第二液压缸的杆室也可以通过止回阀液压连接到液压源，该止回阀构造成允许液压流入第二液压缸的杆室。 铰接接头可以将前机架枢转地连接到后机架。 铰接接头可以横向定位在第一液压缸和第二液压缸之间。
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公开(公告)号：US20160083933A1
公开(公告)日：2016-03-24
申请号：US14492155
申请日：2014-09-22
Applicant: Deere & Company
Inventor： Eric Richard Anderson
IPC: E02F9/22 , E02F9/20 , E02F9/08 , F15B11/024 , F15B21/14
CPC classification number: E02F9/2217 , A01G23/081 , B62D12/00 , E02F9/0841 , E02F9/2025 , E02F9/2221 , F15B11/024 , F15B21/14 , F15B2211/41 , F15B2211/455 , F15B2211/7107
Abstract: An articulated work vehicle with a regenerative hydraulic circuit may comprise a front chassis, a rear chassis, first and second hydraulic cylinders each with head and rod chambers and each pivotally connected to the front chassis and the rear chassis, and an articulation joint. The rod chamber of the second hydraulic cylinder may be hydraulically connected to the head chamber of the first hydraulic cylinder via a flow restrictor. The rod chamber of the second hydraulic cylinder may also be hydraulically connected to a hydraulic source via a check valve which is configured to allow hydraulic flow into the rod chamber of the second hydraulic cylinder. The articulation joint may pivotally connect the front chassis to the rear chassis. The articulation joint may be laterally positioned between the first hydraulic cylinder and the second hydraulic cylinder.
Abstract translation: 具有再生液压回路的铰接作业车辆可以包括前机架，后机架，每个具有头杆和杆室的第一和第二液压缸，并且每个可枢转地连接到前机架和后机架，以及铰接接头。 第二液压缸的杆室可以经由限流器液压地连接到第一液压缸的头部腔室。 第二液压缸的杆室也可以通过止回阀液压连接到液压源，该止回阀构造成允许液压流入第二液压缸的杆室。 铰接接头可以将前机架枢转地连接到后机架。 铰接接头可以横向定位在第一液压缸和第二液压缸之间。
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公开(公告)号：US09284718B2
公开(公告)日：2016-03-15
申请号：US14117961
申请日：2012-06-13
Applicant: Seiji Hijikata , Kazuo Fujishima
Inventor： Seiji Hijikata , Kazuo Fujishima
CPC classification number: E02F9/2217 , B60L11/18 , B60L2200/40 , E02F9/2091 , E02F9/2095 , E02F9/2221 , E02F9/2285 , E02F9/2292 , E02F9/2296 , E02F9/24 , E02F9/268 , F15B21/14 , Y02T10/7005
Abstract: A power regeneration device for an operating machine has a hydraulic cylinder and a return line through which fluid returning to a tank flows when the hydraulic cylinder contracts. The return line branches into a plurality of hydraulic lines through a branching part and includes a regeneration line that which leads returning fluid to the tank via a hydraulic motor to which a generator is connected. A control valve line is connected to the branching part and leads the returning fluid to the tank via a control valve. An electricity storage device stores electric power generated by the generator, and an electric amount detector detects the electric amount of the electricity storage device. A flow rate calculator calculates the flow rate of the returning fluid flowing through the regeneration line and the flow rate of the returning fluid flowing through the control valve line depending on an electric amount signal.
Abstract translation: 用于操作机器的动力再生装置具有液压缸和返回管线，当液压缸收缩时，通过该返回管路返回到箱体的流体流动。 返回管线通过分支部分分支成多条液压管路，并且包括再生管线，其通过连接有发电机的液压马达将返回的流体引导到油箱。 控制阀线连接到分支部分，并通过控制阀将返回流体引导到油箱。 电力存储装置存储由发电机产生的电力，电量检测器检测蓄电装置的电量。 流量计算器根据电量信号计算流过再生线的返回流体的流量和流过控制阀线的返回流体的流量。
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