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公开(公告)号：US20220025912A1
公开(公告)日：2022-01-27
申请号：US17299815
申请日：2019-11-18
申请人： KUBOTA CORPORATION
摘要： A lift arm lifting and lowering mechanism cylinder case provided with a cylinder portion into which oil is fed, a piston slidable inside the cylinder portion to define a hydraulic chamber and receiving hydraulic pressure of the hydraulic chamber on a front surface, a safety valve provided to the piston to discharge the oil inside the hydraulic chamber to the outside when the hydraulic pressure of the hydraulic chamber becomes greater than or equal to a predetermined value, and a lift arm supported by the cylinder case and rotatable in conjunction with movement of the piston, in which the piston includes an oil passage allowing communication between a rear surface of the piston and the front surface, and the oil passage includes a containing portion provided to open on the axially front surface side and capable of containing the safety valve, and a non-containing portion provided on the axially rear surface side relative to the containing portion and incapable of containing the safety valve.
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公开(公告)号：US20200307375A1
公开(公告)日：2020-10-01
申请号：US16832065
申请日：2020-03-27
申请人： KUBOTA CORPORATION
发明人： Daisuke MIYAZAKI , Koji MASUMOTO , Kenzo USHIRO , Hideaki EZAKI
摘要： Provided is an operation mechanism of a work vehicle capable of suppressing transmission of vibration from a vehicle body to a cabin. The operation mechanism of a work vehicle includes: a first link portion which is supported by the vehicle body (a center frame, a transmission, and the like); a second link portion which is supported by a cabin placed on the vehicle body; and a third link portion which has flexibility and connects the first link portion and the second link portion so as to be interlockable.
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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
申请人： Kubota Corporation
CPC分类号： B60K1/04 , B60K11/04 , B60L1/00 , B60L50/60 , B62D25/084 , B62D25/10 , B60K2001/003 , B60K2001/0411 , B60L2200/40 , B62D49/06
摘要： 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：US20240317074A1
公开(公告)日：2024-09-26
申请号：US18734667
申请日：2024-06-05
申请人： KUBOTA CORPORATION
CPC分类号： B60L50/51 , B60K2001/006 , B60L2200/40 , B60L2210/12 , B60L2210/40
摘要： An electric work vehicle includes a first removable cover to cover a portion of a first harness exposed downward through a first opening, a second removable cover to cover a portion of a second harness exposed downward through a second opening, and a third removable cover to cover a portion of a motor exposed downward through a third opening.
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公开(公告)号：US20230010534A1
公开(公告)日：2023-01-12
申请号：US17783424
申请日：2020-10-14
申请人： KUBOTA CORPORATION
发明人： Daisuke MIYAZAKI
摘要： An electric work vehicle includes a work implement, a battery, a motor driven by electric power supplied by the battery, a traveler driven by the motor, a hydraulic pump that is driven by the motor to supply oil to an operating mechanism of the work implement, a transmission to transmit motive power from the motor to the hydraulic pump, and a case that houses the transmission. The case is coupled to the motor, and the hydraulic pump his supported by the case.
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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
申请人： KUBOTA CORPORATION
摘要： 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
申请人： KUBOTA CORPORATION
摘要： 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：US20240270318A1
公开(公告)日：2024-08-15
申请号：US18560783
申请日：2022-05-17
申请人： KUBOTA CORPORATION
CPC分类号： B62D21/18 , B60K1/00 , B60K1/04 , B62D49/06 , B60K2001/0411
摘要： An electric work vehicle includes a battery; a motor to be driven by electric power supplied from the battery, wheels to be driven by the motor, at least one first frame extending in a front-rear direction of a body of the electric work vehicle to support the battery, a motor frame to be coupled to a rear portion of the at least one first frame and support the motor, a second frame extending in the front-rear direction of the body and located rearward of the at least one first frame, and a third frame overlapping the at least one first frame and the second frame in a side view, and coupled to the at least one first frame and the second frame.
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