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Patent Agency Ranking
公开(公告)号：US20160115669A1
公开(公告)日：2016-04-28
申请号：US14520487
申请日：2014-10-22
Applicant: Caterpillar Inc.
Inventor： Corey Lee Gorman , Adam Martin Nackers , John J. Krone , Mahmoud M. Tobaa
CPC classification number: E02F3/435 , E02F3/32 , E02F3/425 , E02F3/437 , E02F9/2004 , E02F9/2012 , E02F9/2203 , E02F9/2228 , E02F9/2285
Abstract: A hydraulic control system is disclosed for an excavation machine including a tool linkage system. The hydraulic control system may have a first actuator configured to move a first link of the tool linkage system in response to input from an operator of the excavation machine, and a pressure sensor configured to generate a signal indicative of a pressure of the first actuator. The hydraulic control system may also have a second actuator configured to move a second link of the tool linkage system in response to input from the operator. In addition, the hydraulic control system may have a controller in communication with the pressure sensor, the first actuator, and the second actuator. The controller may be configured to automatically affect operation of the first actuator based on the pressure signal at times when movement of the second actuator is being requested by the operator and movement of the first actuator is being requested by the operator at a level less than a threshold
Abstract translation: 公开了一种用于包括工具连杆系统的挖掘机的液压控制系统。 液压控制系统可以具有第一致动器，其被配置为响应于来自挖掘机的操作者的输入而移动工具联动系统的第一连杆，以及被配置为产生指示第一致动器的压力的信号的压力传感器。 液压控制系统还可以具有第二致动器，其构造成响应于来自操作者的输入而移动工具联动系统的第二连杆。 此外，液压控制系统可以具有与压力传感器，第一致动器和第二致动器连通的控制器。 控制器可以被配置为在操作者要求第二致动器的运动时基于压力信号来自动影响第一致动器的操作，并且操作者正在请求第一致动器的运动，其水平小于 阈
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公开(公告)号：US20150176697A1
公开(公告)日：2015-06-25
申请号：US14638355
申请日：2015-03-04
Applicant: Caterpillar Inc.
Inventor： Benjamin T. Nelson , Andrew J. Krajnik , John J. Krone
CPC classification number: F16H57/0424 , F04B9/02 , F16H57/0409 , Y10T74/19651 , Y10T74/2186
Abstract: A hydraulic pump housing comprises passages formed in an inner wall separating the gear cavity and the pump cavity to allow for the movement of fluid into and out of the gear cavity, thereby alleviating some of the power loss caused by churning lubricating oil. The hydraulic pump may comprise spaces integrally formed in axially opposing surfaces of the gear cavity walls adjacent the area where the gears mesh to enable the churning oil to expand and flow around the gears.
Abstract translation: 液压泵壳体包括形成在分隔齿轮腔和泵腔的内壁中的通道，以允许流体进入和离开齿轮腔，从而减轻由搅拌润滑油引起的一些动力损失。 液压泵可以包括在与齿轮啮合的区域相邻的齿轮腔壁的轴向相对表面中整体形成的空间，以使搅拌油能够在齿轮周围膨胀和流动。
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公开(公告)号：US20190195097A1
公开(公告)日：2019-06-27
申请号：US15853113
申请日：2017-12-22
Applicant: Caterpillar Inc.
Inventor： Yanchai Zhang , Venkata Dandibhotla , Kyle Brent Walton , John J. Krone
Abstract: A system and method for activating on a user interface an indicator of a condition of a lubricant in a machine module. The system may comprise a controller and a user interface. The controller may be configured to, for each of a first time window and a second time window: receive a plurality of lubricant characteristics and measured lubricant temperatures, calculate an adjusted lubricant characteristic, and determine a slope based on the plurality of adjusted lubricant characteristics. The controller may further determine a change in slope, and generate a signal to activate the indicator on the user interface based on the change in slope, wherein, if the change in slope exceeds a threshold, the indicator is a lubricant changed indicator.
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公开(公告)号：US09702118B2
公开(公告)日：2017-07-11
申请号：US14547672
申请日：2014-11-19
Applicant: Caterpillar Inc.
Inventor： Corey Lee Gorman , John J. Krone , Adam Martin Nackers
CPC classification number: E02F9/2225 , E02F3/32 , E02F9/0866 , E02F9/2217 , E02F9/2246 , E02F9/2285 , E02F9/2296 , F15B1/024 , F15B21/14 , F15B2211/212 , F15B2211/329 , F15B2211/353 , F15B2211/355 , F15B2211/6355 , F15B2211/67 , F15B2211/7058 , F15B2211/7135 , F15B2211/761
Abstract: A hydraulic system is disclosed for use with a machine. The hydraulic system may have a pump configured to pressurize fluid, a first actuator configured to receive pressurized fluid from the pump, and an accumulator configured to receive fluid from the first actuator. The hydraulic system may also have a second actuator configured to receive pressurized fluid from the pump and the accumulator, and a pilot circuit configured to receive pressurized fluid from the pump and the accumulator. The hydraulic system may further have at least one valve movable to provide priority of fluid flow from the accumulator to the pilot circuit over the second actuator when a pressure of the accumulator is less than a low-pressure threshold.
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公开(公告)号：US20150267697A1
公开(公告)日：2015-09-24
申请号：US14223698
申请日：2014-03-24
Applicant: Caterpillar Inc.
Inventor： Corey L. Gorman , Adam Nackers , Jeremiah C. Johnson , John J. Krone
CPC classification number: F04B49/065 , E02F9/2228 , E02F9/2235 , E02F9/2292 , E02F9/2296 , F03C1/0678 , F04B1/26 , F04B23/06 , F04B49/08 , F04B49/22 , F04B2205/06 , F04B2205/09
Abstract: Method of controlling multiple variable displacement hydraulic pumps determined relative to operator commands. If non-second-pump-dominated command, a respective adjusted displacement request is determined based upon the lesser of the operator requested torque limited displacement and an adjusted torque limited displacement that calculated based upon and the torque limited displacement of the respective pump and a scaling factor calculated based upon the first relief valve set pressure and respective pump pressure. If second-pump-dominated command, the set pressure of a relief valve associated with one of the pumps is instead utilized in calculating the scaling factor in the above strategy.
Abstract translation: 控制多个可变排量液压泵相对于操作者指令确定的方法。 如果以非二次泵为主的命令，则基于操作者所要求的扭矩限制位移和基于相应泵的扭矩限制位移计算的调整的转矩限制位移和缩放比例 基于第一安全阀设定压力和相应的泵压力计算的系数。 如果以二泵为主的指令，则在上述策略中计算缩放因子时，代替使用与其中一个泵相关的溢流阀的设定压力。
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