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公开(公告)号:US20240359549A1
公开(公告)日:2024-10-31
申请号:US18768286
申请日:2024-07-10
Applicant: Kubota Corporation
Inventor: Norita TOTTORI , Hironobu NOGAMI , Daisuke MIYAZAKI , Renta KASAI , Daisuke NAKAYAMA
CPC classification number: B60K1/04 , B60K11/04 , B60L1/00 , B60L50/60 , B62D25/084 , B62D25/10 , B60K2001/003 , B60K2001/0411 , B60L2200/40 , B62D49/06
Abstract: An electric work vehicle includes a travel battery, an auxiliary battery, a motor drivable on electric power supplied by the travel battery, a travel device drivable by the motor, a voltage converter positioned forward of the travel battery to step down a voltage of electric power from the travel battery and supply the electric power to the auxiliary battery, and a radiator positioned forward of the travel battery, wherein the voltage converter and the radiator are laterally next to each other in a plan view.
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公开(公告)号:US20220379703A1
公开(公告)日:2022-12-01
申请号:US17619524
申请日:2020-05-27
Applicant: KUBOTA CORPORATION
Inventor: Norita TOTTORI , Hironobu NOGAMI , Daisuke MIYAZAKI , Renta KASAI , Daisuke NAKAYAMA
Abstract: An electric work vehicle includes a travel battery, an auxiliary battery, a motor drivable on electric power supplied by the travel battery, a travel device drivable by the motor, a voltage converter positioned forward of the travel battery to step down a voltage of electric power from the travel battery and supply the electric power to the auxiliary battery, and a radiator positioned forward of the travel battery, wherein the voltage converter and the radiator are laterally next to each other in a plan view.
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公开(公告)号:US20220234434A1
公开(公告)日:2022-07-28
申请号:US17617018
申请日:2020-05-27
Applicant: KUBOTA CORPORATION
Inventor: Norita TOTTORI , Hironobu NOGAMI , Daisuke NAKAYAMA , Daisuke MIYAZAKI
Abstract: An electric work vehicle includes a body frame, a battery above the body frame, a motor drivable on electric power supplied by the battery, a travel device drivable by the motor, and a cooling fan positioned forward of the battery to send cooling air to the battery, wherein the body frame and the battery define a ventilation space therebetween, and the cooling fan extends in an up-down direction of a machine body to face both the battery and the ventilation space.
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公开(公告)号:US20240295265A1
公开(公告)日:2024-09-05
申请号:US18664345
申请日:2024-05-15
Applicant: KUBOTA CORPORATION
Inventor: Hiroaki NAGAI , Daisuke NAKAYAMA , Hironobu NOGAMI , Ryo MASUDA , Keiji TAKAHASHI , Tatsuya SAKAI
IPC: F16H63/06 , B62D49/06 , F16H39/00 , F16H61/32 , F16H61/435
CPC classification number: F16H63/062 , B62D49/06 , F16H39/00 , F16H61/32 , F16H61/435
Abstract: 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.
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公开(公告)号:US20220379704A1
公开(公告)日:2022-12-01
申请号:US17619529
申请日:2020-05-27
Applicant: KUBOTA CORPORATION
Inventor: Norita TOTTORI , Daisuke NAKAYAMA , Hironobu NOGAMI
Abstract: An electric work vehicle includes a battery, a motor positioned under the battery and drivable on electric power supplied by the battery, a travel device drivable by the motor, an inverter positioned under the battery and forward of the motor to convert direct-current electric power from the battery into alternating-current electric power and supply the alternating-current electric power to the motor, and a transmission positioned backward of the battery to transmit a driving force of the motor to the travel device, wherein the motor and the inverter are arranged in a front-back direction of a machine body.
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公开(公告)号:US20220377959A1
公开(公告)日:2022-12-01
申请号:US17619527
申请日:2020-05-27
Applicant: KUBOTA CORPORATION
Inventor: Daisuke NAKAYAMA , Hironobu NOGAMI , Norita TOTTORI , Takefumi OGURI
Abstract: An electric work vehicle includes a work device, a battery, a motor drivable on electric power supplied by the battery, a travel device drivable by the motor, and a hydraulic pump positioned next to the motor and drivable by the motor to supply operating fluid to an operating mechanism of the work device.
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公开(公告)号:US20240367725A1
公开(公告)日:2024-11-07
申请号:US18776444
申请日:2024-07-18
Applicant: Kubota Corporation
Inventor: Daisuke NAKAYAMA
Abstract: An electric work vehicle includes a driver section that an operator is able to enter, a battery positioned forward of the driver section, a motor drivable on electric power supplied by the battery, a travel device drivable by the motor, a cover including an accommodation space inside and capable of being opened and closed, wherein the battery includes an electricity storage to store electric power and a battery cover hermetically accommodating the electricity storage, and the battery cover includes an outer wall surface defining a portion of an exterior of the electric work vehicle.
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公开(公告)号:US20220379970A1
公开(公告)日:2022-12-01
申请号:US17619531
申请日:2020-05-27
Applicant: KUBOTA CORPORATION
Inventor: Daisuke NAKAYAMA
Abstract: An electric work vehicle includes a driver section that an operator is able to enter, a battery positioned forward of the driver section, a motor drivable on electric power supplied by the battery, a travel device drivable by the motor, a cover including an accommodation space inside and capable of being opened and closed, wherein the battery includes an electricity storage to store electric power and a battery cover hermetically accommodating the electricity storage, and the battery cover includes an outer wall surface defining a portion of an exterior of the electric work vehicle.
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公开(公告)号:US20220225556A1
公开(公告)日:2022-07-21
申请号:US17614066
申请日:2020-05-29
Applicant: KUBOTA CORPORATION
Inventor: Daisuke NAKAYAMA , Hironobu NOGAMI , Norihide IWATA , Katsumi YANAGIHARA , Naoto MANTOKU , Keita ONO
IPC: A01B63/114 , A01B63/112
Abstract: A tractor includes: a three-point linkage to which a tiller is mountable a hydraulic lifting/lowering driver to lift and lower the three-point linkage, and a mechanical linkage to transmit a lifting/lowering operation amount of the three-point linkage to the lifting/lowering driver. The mechanical linkage includes a load detector to detect an amount of change in traction load via the three-point linkage, a cable to interlock according to the amount of change in the traction load detected by the load detector, and a mechanical linkage interlocked and connected to the cable and the lifting/lowering driver, the mechanical linkage being capable of transmitting the lifting/lowering operation amount according to the amount of change in the traction load to the lifting/lowering driver.
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