公开(公告)号：WO2016064961A1

公开(公告)日：2016-04-28

申请号：PCT/US2015/056584

申请日：2015-10-21

Applicant: CATERPILLAR INC.

Inventor： GORMAN, Corey Lee ,  NACKERS, Adam Martin ,  KRONE, John J. ,  TOBAA, Mahmoud M.

IPC: F15B21/08

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 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 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. Further, the 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。 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;以及压力传感器，被配置为产生指示第一致动器的压力的信号。 系统还可以具有第二致动器，其被配置为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，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。

公开(公告)号：WO2015148019A1

公开(公告)日：2015-10-01

申请号：PCT/US2015/016572

申请日：2015-02-19

Applicant: CATERPILLAR INC.

Inventor： GORMAN, Corey L. ,  NACKERS, Adam ,  JOHNSON, Jeremiah C. ,  KRONE, John J.

IPC: E02F9/22

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 (36, 40) 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（36,40）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转矩限制位移和基于相应泵的扭矩限制位移计算的调整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。

公开(公告)号：WO2022177812A1

公开(公告)日：2022-08-25

申请号：PCT/US2022/016088

申请日：2022-02-11

Applicant: CATERPILLAR INC.

Inventor： KRONE, John J. ,  SERGISON, Daniel P. ,  MATE, Edward W. ,  PETERSON, Jeremy T. ,  DUFFER, Bradly G. ,  MARQUETTE, Matthew S.

IPC: B62D15/02 ,  B62D7/06 ,  B62D5/04

Abstract: A machine (100) includes a frame (104), a first steering arm (120), a second steering arm (122), a first hydraulic actuator (116) coupled to the frame (104) and the first steering arm (120), and a second hydraulic actuator (118) coupled to the frame (104) and the second steering arm (122). A first angle sensor (400) measures a rotational displacement of the first hydraulic actuator (116) relative to the first steering arm (120). A first link (500) couples the first hydraulic actuator (116) and the first sensor (400), and isolates movements other than the first rotational displacement. A second angle sensor (400) measures a second rotational displacement of the second hydraulic actuator (118) relative to the second steering arm (122). A second link (500) couples the second hydraulic actuator (118) and the second sensor (400), and isolates movements other than the second rotational displacement.

公开(公告)号：WO2015017334A1

公开(公告)日：2015-02-05

申请号：PCT/US2014/048443

申请日：2014-07-28

Applicant: CATERPILLAR INC.

Inventor： LAWRENCE, Keith E. ,  KRONE, John J. ,  BIGGS, Nick W. ,  KIRSCH, Karl A. ,  KANENAWA, Yuya ,  YOSHINO, Tetsuya ,  GABIBULAYEV, Magomed

IPC: E02F9/22 ,  E02F3/42 ,  E02F3/85

CPC classification number: F15B21/047 ,  E02F3/435 ,  E02F9/2207 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296 ,  F15B2211/20546 ,  F15B2211/30505 ,  F15B2211/30565 ,  F15B2211/31558 ,  F15B2211/329 ,  F15B2211/40507 ,  F15B2211/41581 ,  F15B2211/50518 ,  F15B2211/5159 ,  F15B2211/575 ,  F15B2211/6346 ,  F15B2211/6355 ,  F15B2211/88

Abstract: In order to avoid cavitation in a boom cylinder (108) head end (152) at the beginning of a dig cycle, fluid from an alternate source (148, 188) is supplied to the head end (152) before or in addition to fluid supplied by the main boom-up hydraulic circuit (134, 156). In one embodiment, an electronic hydraulic valve (184, 202), related sensors (274), and control system (190) determines the beginning of a dig operation and uses fluid at an intermediate pressure to rapidly provide fluid to a boom (108) head end (152) cylinder to prevent voiding or cavitation before fluid under high pressure from the main pump (132) can be brought to the cylinder (108). An on/off fluid switch (184, 202) is activated early in a dig operation to address low pressure at the boom cylinder head end (152) and provide an alternate path for fluid into the cylinder (108) in reaction to the boom (106) being lifted by a motion of the stick (110) and bucket (114) in contact with the work surface (104).

Abstract translation: 为了避免在挖掘循环开始时在动臂缸（108）头端（152）中的气蚀，来自替代源（148,188）的流体在流体之前或者除流体之外被提供给头端（152） 由主动臂上升液压回路（134,156）供给。 在一个实施例中，电子液压阀（184,202），相关传感器（274）和控制系统（190）确定挖掘操作的开始并且使用中间压力的流体快速地向悬臂（108）提供流体， 头端（152）气缸，以防止在来自主泵（132）的高压下的流体可以被带到气缸（108）之前的空洞或空化。 在挖掘操作中早期启动开/关流体开关（184,202）以解决悬臂液压缸头端（152）处的低压，并且提供用于与悬臂反应的流体进入气缸（108）的备用路径 106）通过与工作表面（104）接触的杆（110）和铲斗（114）的运动而被提升。

公开(公告)号：WO2021206878A1

公开(公告)日：2021-10-14

申请号：PCT/US2021/022667

申请日：2021-03-17

Applicant: CATERPILLAR INC.

Inventor： KRONE, John J. ,  VLAMINCK, Mitchell C. ,  HALL, James C. ,  SERGISON, Daniel P. ,  SPATZ, Mark A.

IPC: G01G19/08 ,  G01G19/12 ,  G01G3/12

Abstract: A payload measurement system (200) can be used to measure the payload added to a machine (100) supported on a plurality of walking beams (130). A plurality of load cell sensors (202) is mounted to the walking beams (130) in locations where, when the walking beam (130) bends, the sensors (202) are placed under load (248). The load cell sensors (202) include a symmetrical strain bar (220) having first and second mounting ends (230,232) connected by a connecting span (234), wherein the end thickness (264) is greater than the span thickness (269) of the connecting span (234). The connecting span (234) is disposed between and spaced apart from an upper plane (260) and a lower plane (262) with which the surfaces of the mounting ends (230) are aligned.

公开(公告)号：WO2019125676A1

公开(公告)日：2019-06-27

申请号：PCT/US2018/061486

申请日：2018-11-16

Applicant: CATERPILLAR INC.

Inventor： ZHANG, Yanchai ,  DANDIBHOTLA, Venkata ,  WALTON, Kyle B. ,  KRONE, John J.

IPC: F01M11/10

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.

公开(公告)号：WO2016081179A1

公开(公告)日：2016-05-26

申请号：PCT/US2015/058101

申请日：2015-10-29

Applicant: CATERPILLAR INC.

Inventor： GORMAN, Corey Lee ,  KRONE, John J. ,  NACKERS, Adam Martin

IPC: E02F9/22

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 (46) is disclosed for use with a machine (10). The hydraulic system (46) may have a pump (58) configured to pressurize fluid, a first actuator configured to receive pressurized fluid from the pump (58), and an accumulator (92) configured to receive fluid from the first actuator. The hydraulic system (46) may also have a second actuator configured to receive pressurized fluid from the pump (58) and the accumulator (92), and a pilot circuit (48) configured to receive pressurized fluid from the pump (58) and the accumulator (92). The hydraulic system (46) may further have at least one valve (102) movable to provide priority of fluid flow from the accumulator (92) to the pilot circuit (48) over the second actuator when a pressure of the accumulator (92) is less than a low-pressure threshold.

Abstract translation: 公开了一种与机器（10）一起使用的液压系统（46）。 液压系统（46）可以具有构造成对流体加压的泵（58），构造成从泵（58）接收加压流体的第一致动器和构造成从第一致动器接收流体的蓄能器（92）。 液压系统（46）还可以具有构造成从泵（58）和蓄能器（92）接收加压流体的第二致动器，以及构造成从泵（58）接收加压流体的先导回路（48） 蓄电池（92）。 液压系统（46）还可以具有至少一个阀（102），当所述蓄能器（92）的压力为（22）为压力时，所述至少一个阀可移动以提供通过所述第二致动器从所述蓄能器（92）到所述先导回路 小于低压阈值。