公开(公告)号：US20240360649A1

公开(公告)日：2024-10-31

申请号：US18648100

申请日：2024-04-26

Applicant: Yanmar Holdings Co., Ltd.

Inventor： Hiroki Kabata ,  Katsuya Miyazaki ,  Kazuki Takeda ,  Daisuke Kawaguchi

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

CPC classification number: E02F9/2095 ,  E02F9/0866 ,  E02F9/2066 ,  E02F9/2235 ,  F01N9/002 ,  F15B15/20 ,  E02F9/2285 ,  E02F9/2296

Abstract: 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：US20240328123A1

公开(公告)日：2024-10-03

申请号：US18577634

申请日：2022-07-05

Applicant: HD HYUNDAI INFRACORE CO., LTD.

Inventor： Sanghoon LEE

IPC: E02F9/26 ,  E02F9/22 ,  G06T11/20 ,  G06V20/56 ,  H04N7/18

CPC classification number: E02F9/261 ,  E02F9/264 ,  G06T11/203 ,  G06V20/56 ,  H04N7/181 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296 ,  G06T2210/62

Abstract: A control system for construction machinery includes an upper camera installed in a cabin of a rear vehicle body to photograph the front of the cabin, a lower camera installed in a front vehicle body rotatably connected to the rear vehicle body to photograph the front of the front vehicle body, a tire monitoring portion configured to detect pressure information on a tire provided in the front vehicle body or the rear vehicle body, an image processing device configured to synthesize first and second images captured from the upper camera and the lower camera into one image, and configured to determine a position of a transparency processing area in the synthesized image according to the tire pressure information and transparency-process at least one of the first and second images in the transparency processing area, and a display device configured to display the synthesized image transparency-processed by the image processing device.

公开(公告)号：US12098522B2

公开(公告)日：2024-09-24

申请号：US16978498

申请日：2019-06-25

Applicant: Hitachi Construction Machinery Co., Ltd.

Inventor： Akira Watanabe ,  Ken Takeuchi ,  Itaru Naya

IPC: E02F9/20 ,  B60L58/10 ,  B60L58/12 ,  E02F9/22 ,  E02F9/26 ,  G07C5/02 ,  H01M10/42 ,  H01M10/48 ,  H02J7/00 ,  H02J13/00

CPC classification number: E02F9/2091 ,  B60L58/10 ,  B60L58/12 ,  E02F9/26 ,  G07C5/02 ,  H01M10/425 ,  H01M10/48 ,  H01M10/482 ,  H02J7/00032 ,  H02J7/0013 ,  H02J13/00006 ,  B60L2200/40 ,  E02F9/2228 ,  E02F9/2285 ,  E02F9/2296 ,  H01M2010/4271 ,  H01M2010/4278 ,  H01M2220/20 ,  H02J2310/40

Abstract: A management server receives a maximum value and a minimum value of the respective voltages in a plurality of battery cells configuring an electricity storage device of a hydraulic excavator from the hydraulic excavator, and stores the values in a storage device. Discharge characteristics of the electricity storage device are stored in the storage device in the management server. A battery state estimation calculating unit in the management server calculates an estimation maximum value and an estimation minimum value of cell voltages in the present or in the future by adding the discharge characteristics stored in the storage device to the latest maximum value and the latest minimum value of the cell voltages stored in the storage device. A management information producing unit outputs information based upon the estimation maximum value and the estimation minimum value of the cell voltages calculated in the battery state estimation calculating unit.

公开(公告)号：US20240309612A1

公开(公告)日：2024-09-19

申请号：US18576666

申请日：2022-06-20

Applicant: KOBELCO CONSTRUCTION MACHINERY CO., LTD.

Inventor： Hidenori TANAKA ,  Koji UEDA

IPC: E02F9/22

CPC classification number: E02F9/2285 ,  E02F9/2235 ,  E02F9/2296

Abstract: A construction machine includes a relief valve that opens to limit a pressure of a pump discharge line that is a line between a main pump and a direction switching valve, a back pressure generation mechanism that is disposed on a return line that is a line connected to a tank and generates a back pressure in the return line, and an air bleed line that connects the relief valve and a portion downstream from the back pressure generation mechanism in the return line.

公开(公告)号：US20240294095A1

公开(公告)日：2024-09-05

申请号：US18572947

申请日：2022-06-23

Applicant: HD HYUNDAI INFRACORE CO., LTD.

Inventor： Jong Min NA

IPC: B60L58/27 ,  B60L1/00 ,  E02F9/22 ,  E02F9/24 ,  F15B13/04

CPC classification number: B60L58/27 ,  B60L1/003 ,  E02F9/2228 ,  E02F9/2285 ,  E02F9/24 ,  F15B13/04 ,  B60L2200/40 ,  B60L2240/36 ,  B60L2240/545 ,  E02F9/2296

Abstract: This disclosure relates to a construction machine utilizing battery and hydraulic power and comprising an electronic power unit comprising a battery and an electric motor, a hydraulic pump driven by the electronic power unit and discharging hydraulic fluid, a hydraulic line through which the hydraulic fluid discharged from the hydraulic pump moves, a main control valve installed on the hydraulic line and controlling the supply of the hydraulic fluid to at least one of propulsion devices or various working devices requiring hydraulic power, a bypass cut valve installed downstream of the main control valve on the hydraulic line and configured to open and close the hydraulic line, and a controller initiating a warm-up mode to increase the output of the electronic power unit and open the bypass cut valve.

公开(公告)号：US12065191B2

公开(公告)日：2024-08-20

申请号：US17357608

申请日：2021-06-24

Applicant: KUBOTA CORPORATION

Inventor： Yuji Fukuda ,  Kohei Nagao

IPC: B62D11/04 ,  E02F3/34 ,  E02F9/20 ,  E02F9/22 ,  F15B15/02 ,  F16H61/47

CPC classification number: B62D11/04 ,  E02F3/3414 ,  E02F9/2004 ,  E02F9/2235 ,  E02F9/2253 ,  E02F9/2292 ,  E02F9/2296 ,  F15B15/02 ,  F16H61/47

Abstract: A working machine includes a first rotation detector to detect a first rotation speed of the left traveling motor, a second rotation detector to detect a second rotation speed of the right traveling motor, and a controller to perform automatic deceleration to automatically reduce the first rotation speed and the second rotation speed both set at respective second speed stages by shifting a speed stage of each of the first rotation speed and the second rotation speed to a first speed stage that is lower than the second speed stage. During straight traveling of a machine body of the working machine, the controller determines a straight-traveling threshold serving as a deceleration threshold for judging whether to perform the automatic deceleration based on the first rotation speed or the second rotation speed.

公开(公告)号：US12037770B2

公开(公告)日：2024-07-16

申请号：US16975153

申请日：2019-03-15

Applicant: KOMATSU LTD.

Inventor： Masanori Aizawa ,  Kenjiro Shimada ,  Tomoki Konda

IPC: E02F9/20 ,  E02F3/43 ,  E02F9/26 ,  E02F3/32 ,  E02F9/22

CPC classification number: E02F9/205 ,  E02F3/439 ,  E02F9/262 ,  E02F3/32 ,  E02F9/2225 ,  E02F9/2296

Abstract: A system controls a work machine that loads materials onto a conveyance vehicle. The system includes a controller and a detection device. The controller controls the work machine in an automatic control mode in which work is performed automatically. The detection device detects an approach of the conveyance vehicle toward the work machine. The automatic control mode includes a loading mode in which the work machine is caused to move to perform loading work for loading onto the conveyance vehicle, and an other mode other than the loading mode. The other mode includes at least one of a mode for gathering fallen materials and a digging mode for further increasing the materials by digging. The controller causes the automatic control mode to transition from the other mode to the loading mode when the approach of the conveyance vehicle is detected.

公开(公告)号：US11987959B2

公开(公告)日：2024-05-21

申请号：US17158268

申请日：2021-01-26

Applicant: SUMITOMO CONSTRUCTION MACHINERY CO., LTD.

Inventor： Takuma Seki

IPC: E02F9/26 ,  B60R1/23 ,  E02F3/32 ,  E02F9/16 ,  E02F9/22 ,  G06T5/80 ,  H04N7/18 ,  H04N23/90

CPC classification number: E02F9/26 ,  B60R1/23 ,  G06T5/80 ,  H04N7/181 ,  H04N23/90 ,  B60R2300/105 ,  B60R2300/30 ,  E02F3/32 ,  E02F9/16 ,  E02F9/2225 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296 ,  G06T2207/30252

Abstract: A shovel includes a lower traveling structure, an upper swing structure mounted on the lower traveling structure via a swing mechanism, an image capturing device attached to the upper swing structure to capture an image of an area surrounding the upper swing structure, and a display device. The display device is configured to display the image captured by the image capturing device such that distortion in a part of an edge of the upper surface of the upper swing structure is reduced compared with distortion in another part in the image.

公开(公告)号：US11987180B2

公开(公告)日：2024-05-21

申请号：US17034520

申请日：2020-09-28

Applicant: SUMITOMO CONSTRUCTION MACHINERY CO., LTD.

Inventor： Toshiki Fukuoka

IPC: G08G1/123 ,  B60Q5/00 ,  B60Q9/00 ,  B60R1/00 ,  E02F9/16 ,  E02F9/20 ,  E02F9/24 ,  E02F9/26 ,  E02F3/32 ,  E02F9/22

CPC classification number: B60Q9/008 ,  B60Q5/006 ,  B60R1/00 ,  E02F9/16 ,  E02F9/2004 ,  E02F9/24 ,  E02F9/261 ,  B60R2300/105 ,  B60R2300/207 ,  B60R2300/306 ,  B60R2300/8093 ,  E02F3/32 ,  E02F9/2228 ,  E02F9/2235 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296

Abstract: A shovel includes a lower traveling body, an upper turning body turnably mounted on the lower traveling body, a cab mounted on the upper turning body, multiple image capturing devices mounted on the upper turning body, a display device provided in the cab, and an operation part provided in the cab. The display device includes an image display part configured to display a captured image captured by at least one of the image capturing devices and a menu screen. The image display part is configured to display the menu screen while displaying the captured image, in response to the operation part being operated.

公开(公告)号：US20240151003A1

公开(公告)日：2024-05-09

申请号：US18281450

申请日：2022-03-11

Applicant: Hitachi Construction Machinery Co., Ltd.

Inventor： Naoya TAKAGAWA ,  Kento KUMAGAI ,  Mitsuhiko KANEHAMA ,  Hiroaki AMANO ,  Ryousuke ITOU

IPC: E02F9/22 ,  F15B13/02 ,  F15B15/18

CPC classification number: E02F9/2203 ,  F15B13/02 ,  F15B15/18 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296 ,  F15B2211/327

Abstract: A controller of a work machine computes a requested velocity of a hydraulic actuator based on an operation signal, computes a first estimated velocity of the hydraulic actuator based on a sensed value of a first sensing device that senses motion information of a driven member, computes a second estimated velocity of the hydraulic actuator based on a sensed value of a second sensing device that senses a flow rate of a directional control valve, computes an arbitrated velocity by arbitrating the first estimated velocity and the second estimated velocity according to a driving state of the hydraulic actuator, and controls the directional control valve based on a deviation between the requested velocity and the arbitrated velocity. The computation of the arbitrated velocity is to perform an arbitration such that a degree of effect on the second estimated velocity is larger than a degree of effect on the first estimated velocity when the hydraulic actuator starts to move, and to perform an arbitration such that the degree of effect on the first estimated velocity is larger than the degree of effect on the second estimated velocity when the driving of the hydraulic actuator is approaching a steady state.