公开(公告)号：US20240360649A1

公开(公告)日：2024-10-31

申请号：US18648100

申请日：2024-04-26

申请人： Yanmar Holdings Co., Ltd.

发明人： Hiroki Kabata ,  Katsuya Miyazaki ,  Kazuki Takeda ,  Daisuke Kawaguchi

IPC分类号： E02F9/20 ,  E02F9/08 ,  E02F9/22 ,  F01N9/00 ,  F15B15/20

CPC分类号： E02F9/2095 ,  E02F9/0866 ,  E02F9/2066 ,  E02F9/2235 ,  F01N9/002 ,  F15B15/20 ,  E02F9/2285 ,  E02F9/2296

摘要： A control method of a work machine in which a rotation number of a fan that takes outside air into an engine room accommodating an engine varies with a rotation number of the engine, includes: executing first control of regenerating a collecting filter unit that collects particulates contained in exhaust gas of the engine by a temperature rise of the exhaust gas; when the work machine is changed from a steady state to a specific state, executing second control of decreasing an amount of working oil discharged from a hydraulic pump by driving of the engine; and, when the first control and the second control are concurrently executed, executing third control of increasing the rotation number of the engine.

公开(公告)号：US12129629B2

公开(公告)日：2024-10-29

申请号：US17255622

申请日：2018-06-27

申请人： Volvo Construction Equipment AB

发明人： Pierre Loisy ,  Alain Oggero

IPC分类号： E02F9/22 ,  E02F3/36 ,  E02F9/24 ,  E02F9/26 ,  F15B20/00

CPC分类号： E02F9/226 ,  E02F3/3618 ,  E02F3/3622 ,  E02F3/3663 ,  E02F9/24 ,  E02F9/268 ,  F15B20/00 ,  F15B2211/327 ,  F15B2211/6336 ,  F15B2211/7053 ,  F15B2211/85 ,  F15B2211/862 ,  F15B2211/863 ,  F15B2211/8643 ,  F15B2211/865 ,  F15B2211/8752 ,  F15B2211/8757

摘要： A control device and method for controlling a disengaging actuator (1) of a tool attachment, the device comprising a three-state switch (2), with a middle neutral position (20), a first end position (21), and a second end position (22), a control unit (3, 3′), having an input corresponding to an activation of the first end position (21), an electro-valve (4) coupled hydraulically to the disengaging actuator (1), having a coil (40), a first control line (41) and a second control line (42) coupled respectively to first and second terminals of the coil (40) of the electro-valve, wherein one of the first and second control lines is coupled to the second end position (22) of the three-state switch and the other of the first and second control lines is coupled to an output of the control unit, such that both control lines have to be activated to allow disengagement.

公开(公告)号：US12129628B2

公开(公告)日：2024-10-29

申请号：US17997320

申请日：2021-04-30

申请人： Danfoss A/S

发明人： Mahesh K Jadhav ,  Kedar Rugge

IPC分类号： E02F9/22 ,  F15B11/16 ,  F15B21/08

CPC分类号： E02F9/2221 ,  E02F9/2228 ,  E02F9/2235 ,  E02F9/226 ,  F15B11/161 ,  F15B11/163 ,  F15B11/165 ,  F15B21/087 ,  E02F9/2246 ,  F15B2211/20546 ,  F15B2211/6651 ,  F15B2211/6652 ,  F15B2211/6654

摘要： A method for preventing prime mover stall for a work machine including a hydraulic system having a plurality of control valves served by a hydraulic pump. The method can include determining an actual required flow rate value for the plurality control valves and a total maximum flow rate to the plurality of control valves that will enable the prime mover to operate without stalling. The method can also include operating the plurality of control valves such that the combined total flow of the plurality control valves is at or below the total maximum flow rate such that the pump operates at a condition below which prime mover stall will occur. The method can also include setting a flow sharing allocated specific criteria in which the flow reduction takes place during a flow saturation condition for each of the plurality of control valves such that the total sum of the flow rates (calculated based on the criteria) is equal to or less than the total maximum flow rate.

公开(公告)号：US20240352706A1

公开(公告)日：2024-10-24

申请号：US18553257

申请日：2022-05-10

申请人： KOMATSU LTD.

发明人： Takuya SONODA ,  Yoshihide NAKAE ,  Takashi MAEDA

IPC分类号： E02F3/84 ,  E02F3/76 ,  E02F9/20 ,  E02F9/22

CPC分类号： E02F3/844 ,  E02F3/764 ,  E02F9/2004 ,  E02F3/7645 ,  E02F3/765 ,  E02F9/2203

摘要： A work machine includes a vehicle body, a work implement movably connected to the vehicle body, a plurality of actuators that are connected to the work implement and change an orientation of the work implement with respect to the vehicle body, an operating device that is operable to change the orientation of the work implement, a sensor that detects the orientation of the work implement, and a controller. The controller acquires a current orientation of the work implement, determines a target orientation of the work implement corresponding to an operation of the operating device, determines respective target stroke lengths of the plurality of actuators so that the work implement assumes the target orientation from the current orientation with a combination of stroke motions of the plurality of actuators, and controls the plurality of actuators based on the target stroke lengths.

公开(公告)号：US20240352703A1

公开(公告)日：2024-10-24

申请号：US18758401

申请日：2024-06-28

申请人： Great Plains Manufacturing, Inc.

发明人： Jason Carlson ,  John M. Relph ,  Matthew Shobe ,  Jeff Welsh

IPC分类号： E02F3/38 ,  B60K5/12 ,  B62D51/02 ,  B62D55/06 ,  B62D55/10 ,  B62D55/12 ,  B62D55/125 ,  B62D55/18 ,  E02F3/34 ,  E02F3/342 ,  E02F3/42 ,  E02F9/02 ,  E02F9/08 ,  E02F9/20 ,  E02F9/22 ,  E02F9/26 ,  F16D63/00

CPC分类号： E02F3/382 ,  B60K5/12 ,  B62D51/02 ,  B62D55/06 ,  B62D55/10 ,  B62D55/12 ,  B62D55/125 ,  B62D55/18 ,  E02F3/34 ,  E02F3/3414 ,  E02F3/3417 ,  E02F3/342 ,  E02F3/422 ,  E02F9/02 ,  E02F9/08 ,  E02F9/0866 ,  E02F9/0891 ,  E02F9/2004 ,  E02F9/2037 ,  E02F9/22 ,  E02F9/2221 ,  E02F9/2267 ,  E02F9/26 ,  F16D63/006 ,  E02F9/2264

摘要： A compact utility loader compact utility loader comprising a frame, a first track and a second track positioned on either side of the frame, and a pair of loader arms. The loader arms are configured to couple with an attachment via a hitch plate and a hitch pin. The compact utility loader is configured such that as the loader arms are raised and lowered, the hitch pin follows a path approximately defined by a curve f(x)=4.641e0.34x. The value “x” represents a horizontal direction and the function f(x) represents a vertical direction.

公开(公告)号：US12123436B2

公开(公告)日：2024-10-22

申请号：US18563169

申请日：2022-03-07

申请人： Kubota Corporation

发明人： Takuya Imamura ,  Yuichi Nagatomi

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

CPC分类号： F15B13/04 ,  E02F9/2278 ,  F15B11/08

摘要： A control valve unit includes a pilot-operated first operation valve 21 that can be operated to a first closed position at which a first oil passage 41 and a tank port 24 are disconnected from each other and a first open position at which the first oil passage 41 and the tank port 24 are connected to each other; and a pilot-operated second operation valve 22 that can be operated to a second closed position at which a second oil passage 42 and the tank port 24 are disconnected from each other and a second open position at which the second oil passage 42 and the tank port 24 are connected to each other.

公开(公告)号：US20240344298A1

公开(公告)日：2024-10-17

申请号：US18638644

申请日：2024-04-17

申请人： SROOC Holdings, LLC

发明人： Jerrod Chance Cook ,  Thomas R. Flanary, JR. ,  Hugo Gutierrez

IPC分类号： E02F9/22 ,  E02F3/34

CPC分类号： E02F9/2275 ,  E02F3/34

摘要： A debris guard assembly comprises one or more flexible portions and one or more rigid portions. The debris guard assembly allows for motion of a moving component, such as, a hydraulic cylinder or a pivot arm, while preventing debris from falling into the cavity around the moving component.

公开(公告)号：US20240344295A1

公开(公告)日：2024-10-17

申请号：US18578451

申请日：2022-06-22

申请人： KOMATSU LTD.

发明人： Yosuke YAMAGOE ,  Ryohei KIKUZAWA

IPC分类号： E02F9/20 ,  E02F3/32 ,  E02F9/22 ,  E02F9/26 ,  G06F3/04847

CPC分类号： E02F9/2033 ,  E02F9/261 ,  G06F3/04847 ,  E02F3/32 ,  E02F9/2228

摘要： A system for setting an operation range of an excavation machine includes a surroundings information acquisition unit that acquires information on an actual image of the surroundings of the excavation machine, a user interface unit, and a controller that generates a surroundings image based on the information on the actual image acquired by the surroundings information acquisition unit and that displays, on the user interface unit, the surroundings image and a setting guidance image for setting a virtual wall that regulates the operation range of the excavation machine.

公开(公告)号：US12115897B2

公开(公告)日：2024-10-15

申请号：US17379745

申请日：2021-07-19

申请人： Caterpillar Inc.

发明人： John R. Connolly ,  Aleem Junaidi ,  Jun Wen

IPC分类号： B60P1/16 ,  E02F9/22

CPC分类号： B60P1/162 ,  B60P1/165 ,  E02F9/2246 ,  E02F9/2267 ,  E02F9/2285 ,  E02F9/2289

摘要： A hoist valve assembly for a work machine cylinder includes a main control valve, a counterbalance valve and a counterbalance shutoff valve. A main control valve raise position connects a head end of the cylinder with a pressurized fluid source and a rod end of the cylinder to a low pressure reservoir to extend the cylinder. The counterbalance valve is between the rod end and the main control valve, is biased to a closed position and has an open position connecting the rod end to the low pressure reservoir. Rod end and head end pressure signals apply force to the counterbalance valve toward the open position. The counterbalance shutoff valve is positioned between the head end and the counterbalance valve, and has a normal position to apply the head end pressure signal to the counterbalance valve and a shutoff position that blocks the head end pressure signal from the counterbalance valve.

公开(公告)号：US12110912B2

公开(公告)日：2024-10-08

申请号：US18455300

申请日：2023-08-24

申请人： CNH Industrial America LLC

发明人： Matthew Klopfenstein ,  Jerry L. Brinkley

IPC分类号： F15B11/17 ,  E02F9/22 ,  F15B11/16

CPC分类号： F15B11/17 ,  E02F9/2242 ,  F15B11/165 ,  E02F9/2239 ,  F15B2211/20553 ,  F15B2211/20576 ,  F15B2211/515 ,  F15B2211/526 ,  F15B2211/605 ,  F15B2211/6057 ,  F15B2211/65 ,  F15B2211/654

摘要： A hydraulic system for a vehicle includes a first hydraulic pump including a first displacement actuator and a first pressure port, a first load sense system fluidly coupled to the first displacement actuator, a second hydraulic pump including a second displacement actuator and a second pressure port, a second load sense system fluidly coupled to the second displacement actuator, and a crossover pressure controller coupled between the first pressure port and the second pressure port. The crossover pressure controller reconfigurable between (a) a combined pressure configuration providing fluid communication between the first pressure port and the second pressure port and (b) a separate pressure configuration inhibiting fluid communication between the first pressure port and the second pressure port. The crossover pressure controller is actuatable independent of the first load sense system and the second load sense system.