公开(公告)号：US10954968B2

公开(公告)日：2021-03-23

申请号：US16672441

申请日：2019-11-02

Applicant: Takeuchi Mfg. Co., Ltd.

Inventor： Kengo Kumeuchi ,  Koichi Shimizu ,  Shumpei Okutani ,  Yuta Kobayashi

IPC: F15B9/04 ,  E02F9/22

Abstract: An operation control device for a working vehicle which includes a hydraulic working device, comprises a hydraulic actuator to drive the hydraulic working device, an operating oil supply source for driving the hydraulic actuator, a sent-out oil amount control device that controls the amount of oil sent out from the operating oil supply source, an operating device to be operated to make the hydraulic actuator work, and an operating oil supply control device that performs control to supply operating oil to the hydraulic actuator according to operation of the operating device. The sent-out oil amount control device controls the amount of oil sent out from the operating oil supply source according to the operation amount of the operating device.

公开(公告)号：US09815332B2

公开(公告)日：2017-11-14

申请号：US14879267

申请日：2015-10-09

Applicant: Takeuchi Mfg. Co., Ltd.

Inventor： Yuuki Jinno ,  Shumpei Okutani

IPC: B60Q1/00 ,  B60C9/00 ,  G01F23/00 ,  E02F9/08 ,  E02F9/26 ,  B60K15/03

CPC classification number: B60C9/00 ,  B60K13/04 ,  B60K15/03 ,  B60K2015/03203 ,  B60K2015/03223 ,  B60K2015/03361 ,  B60K2015/03368 ,  B60K2015/0458 ,  B60Q9/00 ,  E02F9/0883 ,  E02F9/267 ,  F01N3/0231 ,  F01N3/103 ,  F01N3/2066 ,  F01N13/0093 ,  F01N2590/08 ,  F01N2610/02 ,  F01N2610/1406 ,  F01N2610/142 ,  F01N2900/1814 ,  F02M1/185 ,  F02M5/00 ,  F02M17/06 ,  G01F23/00 ,  G01F23/0061 ,  G01F23/32 ,  Y02A50/2325 ,  Y02T10/24

Abstract: A working vehicle according to the present invention is configured with a fuel tank, a fuel sensor for detecting an amount of fuel stored in the fuel tank, and an informing device (a controller, informing switch, and speaker) for informing the stored amount of fuel detected by the fuel sensor, by changing the informing pattern in response to this stored amount of fuel. The working vehicle is also configured with an exhaust gas purification system for purifying exhaust gas using urea water, a urea water tank, a urea water sensor for detecting the amount of urea water stored in the urea water tank, and an informing device (the controller, informing switch, and speaker) for informing a stored amount of urea water detected by the urea water sensor, by changing the informing pattern in response to this stored amount of urea water.

公开(公告)号：US20240301654A1

公开(公告)日：2024-09-12

申请号：US18376039

申请日：2023-10-03

Applicant: TAKEUCHI MFG. CO., LTD.

Inventor： Yuta Kobayashi ,  Shumpei Okutani ,  Kengo Kumeuchi

IPC: E02F9/12 ,  E02F9/08

CPC classification number: E02F9/123 ,  E02F9/0866

Abstract: A working vehicle includes a control valve unit, a first drive unit, a travel unit, a lower body, an upper body, a second drive unit, a cab, a plurality of work units and a plurality of traveling hydraulic motors, an operation unit, and a controller. The first drive unit includes a first hydraulic pump, a first electric motor. The controller performs a control of the first electric motor and the second electric motor to adjust a first rotation speed of the first electric motor and a second rotation speed of the second electric motor such that a total rotation speed of the first rotation speed and the second rotation speed matches a target rotation speed calculated from required amount of pressure oil.

公开(公告)号：US11927207B2

公开(公告)日：2024-03-12

申请号：US17559704

申请日：2021-12-22

Applicant: Takeuchi Mfg. Co., Ltd.

Inventor： Shumpei Okutani ,  Yuta Kobayashi ,  Koichi Shimizu

IPC: F15B15/18 ,  E02F9/22 ,  E02F9/20

CPC classification number: F15B15/18 ,  E02F9/2203 ,  E02F9/2228 ,  E02F9/2267 ,  E02F9/2271 ,  E02F9/2004 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296

Abstract: A working control device comprises an operation lever for making a boom cylinder (36), an arm cylinder (37) and others work to drive a shovel apparatus (30), and a delivered oil amount control device (a controller (150)). A working oil supply source includes a first electric motor (M1) and a first hydraulic pump (P1). When the operation lever is subjected to a single operation, a number of the motor revolution based on the lever operation is set to control the first electric motor. When the number of motor revolution is less than a necessary minimum number of revolutions, the necessary minimum number is set to control the first electric motor (M1). When the operation lever is subjected to a composite operation, a total number of motor revolutions based on the lever operations is set. When the total number is less than a necessary minimum number of revolutions, the necessary minimum number is set to control the first electric motor (M1).

公开(公告)号：US11643793B2

公开(公告)日：2023-05-09

申请号：US16671985

申请日：2019-11-01

Applicant: Takeuchi Mfg. Co., Ltd.

Inventor： Koichi Shimizu ,  Shumpei Okutani ,  Kengo Kumeuchi

IPC: E02F9/20 ,  E02F9/22 ,  E02F3/42 ,  E02F3/43 ,  F15B11/04 ,  F15B13/02 ,  E02F3/32 ,  E02F3/96

CPC classification number: E02F9/2235 ,  E02F3/425 ,  E02F3/435 ,  E02F9/2004 ,  E02F9/2228 ,  E02F9/2271 ,  E02F9/2296 ,  F15B11/04 ,  F15B13/02 ,  E02F3/325 ,  E02F3/964 ,  E02F9/2285 ,  E02F9/2292

Abstract: An operation control device for a working vehicle comprises a hydraulic actuator to drive the hydraulic working device, operating oil supply source for driving the hydraulic actuator, an operating oil supply control device that performs control to supply operating oil to the hydraulic actuator, an operating device to be operated to make the hydraulic actuator work and a working gain setting device that sets a gain of working speed of the hydraulic actuator corresponding to the operation of the operating device. The operating oil supply control device controls operating oil supply from the operating oil supply source to the hydraulic actuator based on the operation output signal from the operating device and the working speed gain set by the working gain setting device.

公开(公告)号：US11993917B2

公开(公告)日：2024-05-28

申请号：US17849868

申请日：2022-06-27

Applicant: TAKEUCHI MFG. CO., LTD.

Inventor： Shumpei Okutani

IPC: H02M1/08 ,  E02F9/20 ,  E02F9/22

CPC classification number: E02F9/207 ,  E02F9/2242

Abstract: A working vehicle includes a drive unit having inverters, AC motors, hydraulic pumps, a battery, a controller, a battery management system, a switch, an electromagnetic contactor, and a display unit, and the switch is signal-connected to the controller, a stop signal is transmitted to the controller when the switch is turned off, and the controller performs stop control in which the AC motors are operated during a term to thereby set a residual voltage to be lower than a predetermined set voltage.

公开(公告)号：US11769914B2

公开(公告)日：2023-09-26

申请号：US17120522

申请日：2020-12-14

Applicant: TAKEUCHI MFG. CO., LTD.

Inventor： Kengo Kumeuchi ,  Shumpei Okutani ,  Tetsuya Matsumoto

IPC: H01M10/42 ,  B60L53/50 ,  B60L58/18 ,  B60L50/60 ,  B60L53/62 ,  B60L58/14 ,  B60K35/00 ,  H01M10/0525 ,  H01M10/06 ,  H01M10/44 ,  H01M10/46 ,  H01M10/48 ,  B60R16/00

CPC classification number: H01M10/425 ,  B60K35/00 ,  B60L50/60 ,  B60L53/50 ,  B60L53/62 ,  B60L58/14 ,  B60L58/18 ,  H01M10/0525 ,  H01M10/06 ,  H01M10/441 ,  H01M10/46 ,  H01M10/48 ,  B60L2200/40 ,  B60R16/005 ,  H01M2010/4271 ,  H01M2220/20

Abstract: There is provided a working vehicle with increased safety by preventing deterioration of a battery due to over-discharge of the battery caused by an operator not noticing occurrence of a malfunction in driving by connected to an external power source. The working vehicle includes a charger, the battery, a sensor, a drive unit, a controller, a display unit, a battery management system, and a switch, in which the battery management system is configured to control the working vehicle to be switched to the driving by connected to the external power source when the switch is turned on after the charger is connected to an external power source and a valid signal for driving by connected to the external power source is received.

公开(公告)号：US10472805B1

公开(公告)日：2019-11-12

申请号：US16168033

申请日：2018-10-23

Applicant: Takeuchi Mfg. Co., Ltd.

Inventor： Kengo Kumeuchi ,  Koichi Shimizu ,  Yuta Kobayashi ,  Shumpei Okutani ,  Takahiro Watanabe

IPC: E02F9/22 ,  F15B11/17 ,  E02F3/30 ,  E02F3/42 ,  F15B11/16 ,  E02F9/12 ,  E02F3/96

Abstract: A hydraulic drive unit of a hydraulic excavator is configured to include a first hydraulic pump (P1) that discharges a hydraulic oil for activating a boom cylinder (36) and the like, a first electric motor (M1) that drives the first hydraulic pump (P1), a hydraulic pump for revolution (P2) that discharges a hydraulic oil for activating a revolution motor (26), a second electric motor (M2) that drives the hydraulic pump for revolution (P2), and a motor control device (150) that controls the rotation of the first electric motor (M1) and that of the second electric motor (M2). The motor control device (150) is configured such that when the revolution of the revolving body is not activated by the revolution motor (26), control to deactivate the second electric motor (M2) is performed.

公开(公告)号：US20240301650A1

公开(公告)日：2024-09-12

申请号：US18376036

申请日：2023-10-03

Applicant: TAKEUCHI MFG. CO., LTD.

Inventor： Yuta Kobayashi ,  Shumpei Okutani ,  Koichi Shimizu

IPC: E02F3/36

CPC classification number: E02F3/3663 ,  E02F9/123

Abstract: A working vehicle includes a control valve unit with a service actuator control valve, a first drive unit, a travel unit, a lower body, an upper body, a cab, a plurality of work units and a plurality of hydraulic traveling motors, an operation unit, a quick hitch, an attachment, a trigger-switch, a plurality of solenoid valves and a plurality of pipelines, and a controller. The controller performs control that, in a case where the controller receives the trigger signal from the trigger-switch to release the lock of the quick hitch, the pressure oil in the plurality of pipelines is returned to the hydraulic oil tank by energizing the plurality of solenoid valves with the first drive unit stopped.

公开(公告)号：US11208007B2

公开(公告)日：2021-12-28

申请号：US16436153

申请日：2019-06-10

Applicant: TAKEUCHI MFG. CO., LTD.

Inventor： Kengo Kumeuchi ,  Shumpei Okutani ,  Tetsuya Matsumoto

IPC: B60L58/18 ,  B60L50/64 ,  H01M10/42 ,  H01M10/48 ,  H02J7/00

Abstract: There is provided a direct current power supply circuit mounted in a working vehicle with increased safety as compared with related art by a configuration where a main power source is used after a battery management system (BMS) determines that the main power source can be used. A direct current power supply circuit includes a first power source, a switch, a second power source and a first relay, in which the first power source is connected to a battery management system through the first relay so as to supply direct current power, the battery management system is activated by supply of direct current power from the second power source when the switch is turned on, and the first relay is on-controlled when determined that the first power source can be used.