公开(公告)号：US20220185282A1

公开(公告)日：2022-06-16

申请号：US17543779

申请日：2021-12-07

申请人： KUBOTA CORPORATION

发明人： Keiji TAKAHASHI ,  Tatsuya SAKAI ,  Naoya OKAMOTO ,  Ryuji KITAGAWA ,  Tsuyoshi GONO

IPC分类号： B60W30/188 ,  B60Q9/00 ,  B60W10/06 ,  B60W10/10 ,  B62D49/06 ,  B60K35/00

摘要： A work vehicle includes an engine, a transmission to change a received rotational force to a rotational force at a gear ratio that corresponds to a desired vehicle speed and output the changed rotational force, a first operating tool to change the rotation speed of the engine and a deceleration rate of the transmission, a rotation speed controller to control the rotation speed of the engine based on an input provided to the first operating tool, and a second operating tool to receive a holding instruction to hold the rotation speed of the engine constant. In response to the holding instruction being inputted to the second operating tool, the rotation speed controller is configured or programmed to disable control of the rotation speed of the engine which control is based on the input provided to the first operating tool, and hold the rotation speed of the engine constant in accordance with the holding instruction.

公开(公告)号：US20210402874A1

公开(公告)日：2021-12-30

申请号：US17358063

申请日：2021-06-25

申请人： KUBOTA CORPORATION

发明人： Keiji TAKAHASHI ,  Tatsuya SAKAI ,  Tsuyoshi GONO ,  Norita TOTTORI

IPC分类号： B60K17/28 ,  B60K25/06 ,  B60K28/04 ,  B60K28/16

摘要： A PTO shaft driving device in a working machine, includes a parking switch to detect parking of a vehicle body, a first switch located on a manipulator located on the vehicle body to output a PTO shaft control command that is either a driving command to drive a PTO shaft located on the vehicle body or a stopping command to stop the PTO shaft, a second switch located at a position different from the manipulator to output a PTO shaft control command that is either a driving command to drive the PTO shaft or a stopping command to stop the PTO shaft, a first permission switch to selectively permit or prohibit a stationary work when the parking switch detects the parking, and a controller configured or programmed to control driving of the PTO shaft. The controller is configured or programmed to selectively drive or stop the PTO shaft according to the PTO shaft control command from the first switch or the second switch when the stationary work is permitted by the first permission switch.

公开(公告)号：US20240295265A1

公开(公告)日：2024-09-05

申请号：US18664345

申请日：2024-05-15

申请人： KUBOTA CORPORATION

发明人： Hiroaki NAGAI ,  Daisuke NAKAYAMA ,  Hironobu NOGAMI ,  Ryo MASUDA ,  Keiji TAKAHASHI ,  Tatsuya SAKAI

IPC分类号： F16H63/06 ,  B62D49/06 ,  F16H39/00 ,  F16H61/32 ,  F16H61/435

CPC分类号： F16H63/062 ,  B62D49/06 ,  F16H39/00 ,  F16H61/32 ,  F16H61/435

摘要： A work vehicle includes a hydrostatic continuously variable transmission to output power, an electric motor to perform shifting, a linkage mechanism to link a shifting shaft of the electric motor with a trunnion shaft of the hydrostatic continuously variable transmission the linkage mechanism, including a first linkage section linked with the shifting shaft, and a second linkage section linked with the trunnion shaft, and a biasing mechanism to press and bias a second gear of the second linkage section that meshes with a first gear of the first linkage section against the first gear such that a tooth flank of the second gear abuts with a tooth flank of the first gear in a rotation direction reverse to a rotation direction of the first gear.