公开(公告)号：US20190350121A1

公开(公告)日：2019-11-21

申请号：US16415167

申请日：2019-05-17

Applicant: KUBOTA CORPORATION

Inventor： Tetsuo YAMAGUCHI ,  Yoshihiko KUROSHITA ,  Hitoshi AZUMA ,  Michita KONO ,  Shinji OHARA

IPC: A01B71/02 ,  A01B76/00 ,  B60K23/00 ,  B60K25/06

Abstract: A vehicle includes; a vehicle body on which the motor is mounted; an apparatus provided to the traveling vehicle body and also driven by drive power from the motor; an apparatus that performs work on a field; an apparatus that changes the speed of drive power input from the motor and transmits the drive power; a tool that includes speed change stages and is also capable of speed change operation of the speed change apparatus by human operation; a controller that, when the number of speed change stages is changed based on human operation of the speed change operation tool, outputs to the speed change apparatus a speed change command for each predefined number of stages and is also capable of outputting the speed change command for each defined speed change interval; and an operation mechanism that enables adjustment of the speed change interval.

公开(公告)号：US20240306526A1

公开(公告)日：2024-09-19

申请号：US18597979

申请日：2024-03-07

Applicant: KUBOTA CORPORATION

Inventor： Shinji OHARA ,  Kohei HORAI ,  Yoshihiko KUROSHITA

IPC: A01B63/10

CPC classification number: A01B63/1006

Abstract: A working machine includes a driver including a hydraulic actuator and a driven structure to be raised/lowered by the hydraulic actuator, a control valve to control the hydraulic actuator, and a controller configured or programmed to control the control valve to move the driven structure to a target position. The controller is configured or programmed to switch between (i) a first mode in which the controller controls the control valve by performing a first control based on a target flow rate of hydraulic fluid to actuate the hydraulic actuator and a deviation of an actual position of the driven structure from a target value and (ii) a second mode in which the controller controls the control valve by performing a second control including controlling the target flow rate to be lower than the first control when the deviation is more than zero and less than a predetermined deviation.

公开(公告)号：US20220397165A1

公开(公告)日：2022-12-15

申请号：US17749556

申请日：2022-05-20

Applicant: KUBOTA CORPORATION

Inventor： Kohei HORAI ,  Yoshihiko KUROSHITA

IPC: F16D48/02 ,  B62D49/06 ,  B60K35/00 ,  F16D67/02

Abstract: A working vehicle includes: a clutch displaceable to a connected state in which power is transmitted to a drive, a disconnected state in which the transmission is disconnected, and a half-clutch state in which power is slidably and partly transmitted to the drive; a detector that detects an operation position of a clutch pedal and outputs a detected value corresponding to the operation position detected; a control device that brings the clutch into the half-clutch state if the detected value corresponds with a threshold, and brings the clutch into the disconnected state if the detected value is less than the threshold and into the connected state if the detected value is greater than the threshold, and vice versa; and a change unit that changes the threshold to a different value in accordance with an operation on the operation member.

公开(公告)号：US20240301662A1

公开(公告)日：2024-09-12

申请号：US18595519

申请日：2024-03-05

Applicant: KUBOTA CORPORATION

Inventor： Shinji OHARA ,  Kohei HORAI ,  Yoshihiko KUROSHITA

IPC: E02F9/22

CPC classification number: E02F9/226 ,  E02F9/2278

Abstract: A working machine includes a driver including a hydraulic actuator to be actuated by a hydraulic fluid, and a controller configured or programmed to change a drive speed of the driver in a drive start period. The controller is configured or programmed to, if a limit value based on which operation of the driver is limited is equal to or more than a threshold, perform a first control in which the controller changes the drive speed of the driver in the drive start period based on the limit value, and if the limit value is less than the threshold, perform a second control in addition to the first control, the second control being a control in which the controller changes a maximum flow rate of the hydraulic fluid to actuate the hydraulic actuator based on the limit value.

公开(公告)号：US20170355372A1

公开(公告)日：2017-12-14

申请号：US15618829

申请日：2017-06-09

Applicant: KUBOTA CORPORATION

Inventor： Yoshihiko KUROSHITA ,  Susumu UMEMOTO ,  Yoshitomo FUJIMOTO ,  Takashi KOBAYASHI

IPC: B60W30/188

CPC classification number: B60W30/188 ,  B60T7/06 ,  B60T11/21 ,  B60W2510/18 ,  B60W2540/10 ,  B60W2720/10

Abstract: Work vehicle having a coupling member which is switchable between a coupled state where left/right brake operation tools are integrally coupled and a released state releasing the coupling. A coupled state detector is utilized. A controller controls a traveling state and is switchable between a first or normal mode and a second or vehicle speed suppression mode. The second or vehicle speed suppression mode can be switched back to the first or normal mode when the coupled state is detected and a predetermined releasing operation is performed.

公开(公告)号：US20240401695A1

公开(公告)日：2024-12-05

申请号：US18675440

申请日：2024-05-28

Applicant: Kubota Corporation

Inventor： Kohei HORAI ,  Yoshihiko KUROSHITA ,  Michita KONO

IPC: F16H61/02 ,  B60K35/22 ,  B60K35/28 ,  F16H61/00 ,  F16H61/68

Abstract: A work vehicle includes a transmission to shift gears by switching between main transmission gears and auxiliary transmission gears, an input interface for a user to set a value of the main transmission gear corresponding to at least one of the auxiliary transmission gears, a storage to store a correspondence between the auxiliary transmission gear and the value, and a controller configured or programmed to, when the auxiliary transmission gear is switched, set the main transmission gear to the value corresponding to the switched auxiliary transmission gear based on the correspondence.

公开(公告)号：US20230019973A1

公开(公告)日：2023-01-19

申请号：US17944794

申请日：2022-09-14

Applicant: KUBOTA CORPORATION

Inventor： Takashi KOSAKI ,  Takuya INAMORI ,  Yoshihiko KUROSHITA ,  Michita KONO ,  Yuji IMANAGA

IPC: B62D49/06 ,  B60N2/75

Abstract: A working vehicle includes an operator seat and an armrest arranged on a side of the operator seat. The armrest includes an upper surface on which an operation tool arrangement portion is arranged, the operation tool arrangement portion arranging an operation tool, and a side surface having a concave portion. The concave portion is located on an area overlapping, in a front-to-back direction, with another area including the operation tool arrangement portion.

公开(公告)号：US20210139089A1

公开(公告)日：2021-05-13

申请号：US17081338

申请日：2020-10-27

Applicant: KUBOTA CORPORATION

Inventor： Takashi KOSAKI ,  Takuya INAMORI ,  Yoshihiko KUROSHITA ,  Michita KONO ,  Yuji IMANAGA

IPC: B62D49/06 ,  B60N2/75

Abstract: A working vehicle includes an operator seat, an armrest arranged on a side of the operator seat, and a speed shifter to change a traveling speed. The armrest includes an operation lever to be swung back and forth to cause the speed shifter to perform acceleration and deceleration, and an operation switch to be pressed to cause the speed shifter to perform acceleration and deceleration.