公开(公告)号：US20240360644A1

公开(公告)日：2024-10-31

申请号：US18685680

申请日：2022-09-26

申请人： Caterpiliar Inc.

发明人： Paul KEMBLE ,  Andrew Richard CAWDERY ,  Corey Lee GORMAN

IPC分类号： E02F3/38 ,  E02F3/30 ,  E02F3/42

CPC分类号： E02F3/38 ,  E02F3/30 ,  E02F3/425

摘要： A boom assembly for a machine is provided. The boom assembly comprises a mount, a boom, and a linear actuator. The boom comprises an upper end configured to be connected to an arm, a lower end that is pivotably connected to the mount about a mount-boom pivot, an actuator attachment point located between the upper end and the lower end of the boom, and a bifurcated portion of the boom comprising two legs. The bifurcated portion extends between the actuator attachment point and the lower end of the boom. The linear actuator comprises a first end that is pivotably connected to the mount about a mount-actuator pivot, and an opposing second end that is pivotably connected to the boom at the actuator attachment point. The linear actuator is connected between the boom and the mount in a plane normal to an axis of rotation of the boom about the mount-actuator pivot, wherein the plane extends between the two legs of the boom.

公开(公告)号：US12123166B2

公开(公告)日：2024-10-22

申请号：US17487742

申请日：2021-09-28

申请人： KUBOTA CORPORATION

发明人： Teruhiko Iwamoto ,  Kunihiro Suzuki ,  Hitoshi Ono ,  Yukiya Chiba ,  Tetsuji Matsushita

IPC分类号： E02F9/08 ,  E02F3/34 ,  E02F3/36 ,  E02F3/42 ,  E02F9/26

CPC分类号： E02F9/0841 ,  E02F3/3417 ,  E02F3/3654 ,  E02F3/3663 ,  E02F3/422 ,  E02F9/26

摘要： A working machine includes a rear machine body on which an operator's seat is mounted, a front machine body to which a working tool is attached, a center shaft having a first axis extending in a fore-and-aft direction, a first supporting part supporting the center shaft rotatably relative to the rear machine body around the first axis, a coupling shaft having a second axis extending in a vertical direction and connected to the front machine body, and a second supporting part supporting the center shaft rotatably relative to the coupling shaft relative to the second axis. The first supporting part includes a first spherical plain bearing, and the first spherical plain bearing includes a first inner wheel including a convex curved sliding surface and provided on an outer circumferential surface of the center shaft, and a first outer wheel including a concave curved sliding surface and provided on the rear machine body.

公开(公告)号：US12110650B2

公开(公告)日：2024-10-08

申请号：US17419783

申请日：2020-01-14

申请人： Hitachi Construction Machinery Co., Ltd.

发明人： Kazuyoshi Suzuki

IPC分类号： E02F3/42 ,  E02F3/30 ,  E02F9/22 ,  F15B13/02 ,  F15B15/20 ,  E02F9/20

CPC分类号： E02F3/425 ,  E02F3/308 ,  E02F9/2228 ,  F15B13/02 ,  F15B15/20 ,  E02F9/2004 ,  E02F9/2267 ,  E02F9/2271 ,  E02F9/2285 ,  E02F9/2292

摘要： A connection switching device (45) connects a bottom-side oil chamber (15C) of a boom cylinder (15) and a bottom-side oil chamber (16C) of an arm cylinder (16) when a boom operating device (22A) instructs the contraction of the boom cylinder (15) and an arm operating device (21B) instructs the expansion of the arm cylinder (16). The connection switching device (45) connects the bottom-side oil chamber (15C) of the boom cylinder (15) and a rod-side oil chamber (16D) of the arm cylinder (16) when the boom operating device (22A) instructs the contraction of the boom cylinder (15) and the arm operating device (21B) instructs the contraction of the arm cylinder (16).

公开(公告)号：US12104348B1

公开(公告)日：2024-10-01

申请号：US18732219

申请日：2024-06-03

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 ,  B62D55/00 ,  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：US20240271388A1

公开(公告)日：2024-08-15

申请号：US18647267

申请日：2024-04-26

申请人： NABTESCO CORPORATION

发明人： Kazuhito NAKAMURA

IPC分类号： E02F9/20 ,  E02F3/42 ,  E02F9/26

CPC分类号： E02F9/207 ,  E02F3/425 ,  E02F9/2095 ,  E02F9/26 ,  E02F9/264

摘要： A power control device in an electric construction machine including a lower traveling body, an upper rotating body that is attached to the lower traveling body, a boom attached to the upper rotating body, an arm that is attached to the boom, a bucket that is attached to the arm, and a battery that supplies power to each actuator includes: a drive information acquisition unit that acquires drive information of each actuator; an identification unit that identifies the operation performed by the electric construction machine based on the drive information; and a determination unit that determines power to be supplied to the plurality of drive units in accordance with the identified operation of the electric construction machine.

公开(公告)号：US20240209590A1

公开(公告)日：2024-06-27

申请号：US18396034

申请日：2023-12-26

申请人： SUMITOMO HEAVY INDUSTRIES, LTD.

发明人： Shoji HIRATE

IPC分类号： E02F3/43 ,  E02F3/42 ,  E02F9/20 ,  E02F9/22

CPC分类号： E02F3/431 ,  E02F3/422 ,  E02F9/205 ,  E02F9/2207 ,  E02F9/2228 ,  E02F9/2271

摘要： A shovel includes a lower traveling body, an upper swing body swingably mounted on the lower traveling body, an attachment attached to the upper swing body, a hydraulic cylinder configured to drive the attachment, and processing circuitry configured to control, in accordance with a state of acceleration of the hydraulic cylinder, movement of the hydraulic cylinder to suppress vibration of the hydraulic cylinder caused by an operation input related to the hydraulic cylinder.

公开(公告)号：US20240183127A1

公开(公告)日：2024-06-06

申请号：US18075604

申请日：2022-12-06

申请人： CNH Industrial America LLC

发明人： Navneet Gulati ,  Joshua D. Zimmerman

IPC分类号： E02F9/22 ,  E02F3/42 ,  E02F3/43

CPC分类号： E02F9/2203 ,  E02F3/422 ,  E02F3/431 ,  E02F9/2228 ,  E02F3/141

摘要： A method for controlling load dependent valve flow rate in a presence of an overrunning load in a bucket includes receiving a measured pressure from and/or to a hydraulic valve, and the hydraulic valve is coupled to an actuator coupled to the bucket. The method includes calculating a load pressure on the actuator based on the measured pressure. The method includes receiving a first valve command for actuating the actuator to lower the bucket, the first valve command being associated with a desired valve flow rate and a desired maximum speed of the actuator. The method includes providing a second valve command based on a last calculated load pressure before receiving the first valve command, wherein the second valve command adjusts a valve opening area of the hydraulic valve so that a speed of the actuator corresponds to a maximum speed of the actuator for the last calculated load pressure.

公开(公告)号：US20240110366A1

公开(公告)日：2024-04-04

申请号：US18479368

申请日：2023-10-02

申请人： Doosan Babcat North America, Inc.

发明人： Christopher Young

IPC分类号： E02F9/26 ,  E02F3/34 ,  E02F3/42 ,  E02F3/43 ,  E02F9/20

CPC分类号： E02F9/265 ,  E02F3/3414 ,  E02F3/422 ,  E02F3/431 ,  E02F9/2025 ,  E02F9/207 ,  E02F9/2095

摘要： A control device for a power machine can be configured to receive operation data associated with a current operation of the electric power machine, determine, based on the operation data, a commanded direction of travel for the electric power machine, determine, based on the operation data, an orientation of the work element relative to the lift arm, perform a comparison of the orientation to an orientation criterion, and, in response to determining a forward commanded direction of travel and based on the comparison, determine a modified operation parameter for the electric power machine, and control the at least one of electrical actuators based on the modified operation parameter.

公开(公告)号：US11946225B2

公开(公告)日：2024-04-02

申请号：US17334653

申请日：2021-05-28

申请人： Caterpillar Inc.

发明人： Kalpeshkumar N Patel ,  Darren A Blum ,  Aleksandar M Egelja ,  Barrett A Flinn ,  Ryan P McEnaney ,  Trung Q Nguyen ,  David J Lomax

IPC分类号： E02F9/22 ,  E02F3/32 ,  E02F3/42 ,  E02F3/43 ,  E02F9/12 ,  E02F9/20 ,  F04B17/03 ,  F04B23/06 ,  F04B49/06 ,  F04B49/20 ,  F15B15/20

CPC分类号： E02F9/2235 ,  E02F3/32 ,  E02F3/425 ,  E02F3/435 ,  E02F9/123 ,  E02F9/2004 ,  E02F9/2203 ,  E02F9/2292 ,  F04B17/03 ,  F04B23/06 ,  F04B49/06 ,  F04B49/20 ,  F15B15/20 ,  E02F9/2271 ,  E02F9/2296

摘要： One embodiment of a hydraulic system for a machine has a first hydraulic circuit including a first pump coupled to a first hydraulic actuator configured to move a first implement of the machine. A second hydraulic circuit includes a second pump coupled to a second hydraulic actuator configured to move a second implement. An electric motor mechanically couples to the first pump and to the second pump. An operator interface receives input from an operator requesting movement of the first and second implements. A controller communicatively coupled to the electric motor and to the operator interface determines, based on the requested movement of the first and second implements respectively, first and second flow allocations respectively for the first and second pumps and determines respective target displacements for the first and second pumps. The controller also determines first and second target electric motor speeds based on the target displacements for the first and second pumps, respectively, and controls the electric motor to operate at the larger of the first and second target electric motor speeds.

公开(公告)号：US20240084546A1

公开(公告)日：2024-03-14

申请号：US18274302

申请日：2022-01-17

申请人： KOMATSU LTD.

发明人： Masaho YAMAGUCHI

IPC分类号： E02F3/42

CPC分类号： E02F3/427 ,  E02F3/425 ,  E02F9/2296

摘要： An environment-friendly work machine is provided. A work implement includes a boom supported by a vehicular body frame, an arm coupled to the boom, and an attachment coupled to the arm. A boom foot pin rotatably couples the boom to the vehicular body frame. An arm motor is supported by the vehicular body frame. The arm motor generates drive force that moves the arm relatively to the boom. A motive power transmission apparatus mechanically transmits drive force generated by the arm motor to the arm. An arm gear member and a pivot member carry out rotational motion relative to the vehicular body frame as being concentric with the boom foot pin. An arm link transmits motive power to the arm as a result of the relative rotational motion.