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公开(公告)号：US20220307222A1
公开(公告)日：2022-09-29
申请号：US17838376
申请日：2022-06-13
Applicant: KUBOTA CORPORATION
Inventor： Hiroshi HORII
Abstract: A working machine includes a cooling fan, and a first cooling device and a second cooling device that are disposed in series in a flow passage of cooling air that is generated by the cooling fan. The first cooling device is disposed upstream of the second cooling device in a direction of flow of the cooling air, and has a heat-exchange suppressing portion that is provided at a portion corresponding to a region in a rotation center vicinity of the cooling fan and that suppresses heat exchange between the cooling air and a fluid that flows in the first cooling device.
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公开(公告)号：US20220090361A1
公开(公告)日：2022-03-24
申请号：US17538073
申请日：2021-11-30
Applicant: KUBOTA CORPORATION
Inventor： Kazuaki SHOBU , Hiroshi HORII , Hitoshi IWAMURA , Shoichi KAWANO , Shohei DOI
IPC: E02F9/22
Abstract: A working machine includes: a support bracket provided on a machine body and including a boom pivotal support portion and a cylinder pivotal support portion; a boom pivotally supported by the boom pivotal support portion; a boom cylinder pivotally supported at the cylinder pivotal support portion and the boom, and causing the boom to swing upward and downward; a hydraulic hose extended through the support bracket from the rear of the support bracket to the front of the support bracket and connected to the boom cylinder; a first clamp to retain the hydraulic hose on the support bracket; and a second clamp to retain the hydraulic hose on the boom cylinder. The support bracket includes a through hole through which the hydraulic hose is passed in a fore-and-aft direction. The first clamp is disposed rearward of the through hole and forward of the rear end of the boom shaft.
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公开(公告)号：US20150275468A1
公开(公告)日：2015-10-01
申请号：US14661285
申请日：2015-03-18
Applicant: KUBOTA CORPORATION
Inventor： Hiroshi HORII
IPC: E02F3/42 , F15B11/028
CPC classification number: E02F3/425 , E02F9/2235 , E02F9/226 , E02F9/2285 , E02F9/2292 , E02F9/2296 , F15B11/028 , F15B21/042 , F15B2211/20538 , F15B2211/20553 , F15B2211/20576 , F15B2211/212 , F15B2211/25 , F15B2211/30555 , F15B2211/50572 , F15B2211/528 , F15B2211/605 , F15B2211/6057 , F15B2211/611 , F15B2211/62 , F15B2211/633 , F15B2211/6343 , F15B2211/635 , F15B2211/6355
Abstract: A hydraulic system includes: hydraulic actuators; a control valve for controlling the hydraulic actuators; a tank for storing a hydraulic operation fluid; a variable displacement pump for supplying the hydraulic operation fluid to the hydraulic actuators; a regulator for controlling the variable displacement pump; a pilot pump for discharging a hydraulic pilot fluid; a load sensing system for maintaining a differential pressure to be a constant pressure, the differential pressure being obtained by subtracting a second signal pressure from a first signal pressure that is the discharge pressure of the variable displacement pump, the second signal pressure being the maximum one of the load pressures generated in the hydraulic actuators; a signal tube for sending the second signal pressure to the regulator; a throttle provided on the signal tube; and a warm-up circuit for supplying the hydraulic pilot fluid to a downstream side of the throttle.
Abstract translation: 液压系统包括：液压执行器; 用于控制液压致动器的控制阀; 用于存储液压操作流体的罐; 用于将液压操作流体供应到液压致动器的可变排量泵; 用于控制可变排量泵的调节器; 用于排出液压先导流体的先导泵; 负载感测系统，用于将差压保持为恒定压力，所述差压是通过从作为所述可变排量泵的排出压力的第一信号压力减去第二信号压力获得的，所述第二信号压力为最大值 在液压致动器中产生的负载压力; 用于将第二信号压力发送到调节器的信号管; 提供在信号管上的节气门; 以及用于将液压先导流体供给到节气门的下游侧的预热回路。
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公开(公告)号：US20250092637A1
公开(公告)日：2025-03-20
申请号：US18966288
申请日：2024-12-03
Applicant: KUBOTA CORPORATION
Inventor： Yoichi NISHIGORI , Hiroshi HORII
Abstract: A working machine includes a machine body; a traveling device provided at a lower portion of the machine body; a working device provided at a front portion of the machine body; an operator's seat mounted on the machine body; and a work lamp to illuminate a work area of the working device. The work lamp includes a front work lamp to illuminate front of the machine body. The front work lamp is provided at the front portion of the machine body, at a position lower than a seat surface of the operator's seat.
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公开(公告)号：US20240328118A1
公开(公告)日：2024-10-03
申请号：US18738298
申请日：2024-06-10
Applicant: KUBOTA CORPORATION
Inventor： Hiroshi HORII
CPC classification number: E02F9/2203 , E02F3/325 , E02F3/964 , E02F9/2012 , E02F9/2285 , E02F9/2296 , E02F9/26 , F15B13/0401 , E02F9/2292
Abstract: In a working machine, a controller controls actuation of control valves for hydraulic actuators in response to operations performed on operation members. The controller is capable of performing second control for controlling the actuation of each of the control valves based on the amount of an operation performed on a corresponding one of the operation members and the correspondence between a preset operation amount for the operation member and the actuation amount of the control valve and first control for controlling, in accordance with the amount of the operation performed on the operation member, the actuation of the control valve such that the flow rate of the hydraulic fluid supplied from the control valve to the corresponding hydraulic actuator increases to be greater than that in the second control. The controller performs the first control when the operation on the operation member is performed to realize a predetermined operation state.
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Patent Agency Ranking
公开(公告)号：US20230313494A1
公开(公告)日：2023-10-05
申请号：US18206328
申请日：2023-06-06
Applicant: KUBOTA CORPORATION
Inventor： Hiroshi HORII , Ryohei MASUDA , Kunihiko BITO
CPC classification number: E02F9/2004 , E02F9/166
Abstract: A manipulator mechanism includes a rotary shaft rotatable about an axis extending in a first horizontal direction, an operation member disposed at one of opposite ends of the rotary shaft in an axial direction thereof to rotate together with the rotary shaft, an angle sensor disposed at the other of the opposite ends of the rotary shaft in the axial direction to detect a rotation angle of the rotary shaft, and a neutral return mechanism provided between the operation member and the angle sensor to return the operation member to a neutral position from a post-operation position which is a position to which the operation member has been moved.
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公开(公告)号：US20200299928A1
公开(公告)日：2020-09-24
申请号：US16896581
申请日：2020-06-09
Applicant: KUBOTA CORPORATION
Inventor： Hiroshi HORII
IPC: E02F9/12
Abstract: A working machine includes a traveling device having a traveling frame, a turn base plate supported on the traveling frame and configured to turn around an axis extending in a vertical direction, the turn base plate having an opening portion through which the axis extends, and a swivel joint including an outer sleeve fixed to the turn base plate, and an inner shaft inserted to the opening portion and inserted to the outer sleeve so as to rotate about the axis, the inner shaft being configured to restrictively rotate with respect to the traveling frame. The outer sleeve has a flange portion fixed to the turn base plate on a periphery of the opening portion and covering the opening portion.
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公开(公告)号：US20190338493A1
公开(公告)日：2019-11-07
申请号：US16453508
申请日：2019-06-26
Applicant: KUBOTA CORPORATION
Inventor： Hiroshi HORII
IPC: E02F9/16 , B60N2/12 , G05G1/62 , B60N2/64 , B60N2/50 , B60N2/06 , G05G1/60 , B60R1/00 , B62D33/06 , B60N2/24 , E02F9/20 , E02F9/02 , G05G1/04 , G05G5/04 , G05G5/05 , E02F9/26 , G05G1/445 , B60K26/02
Abstract: A working machine according to an embodiment of the present invention includes an operator seat, an operation base arranged in front of the operator seat, an operation member arranged on the operation base and configured to be gripped and moved, and an armrest member extending from the operation base toward a side of the operator seat.
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公开(公告)号：US20190309499A1
公开(公告)日：2019-10-10
申请号：US16449060
申请日：2019-06-21
Applicant: KUBOTA CORPORATION
Inventor： Hiroshi HORII
Abstract: A working machine includes a traveling device to change a traveling speed in accordance with a flow rate of an operation fluid, a traveling operation device to change the flow rate of the operation fluid to be supplied to the traveling device, and a switching operation portion to change, at multiple steps, a supply amount of the operation fluid to be supplied to the traveling device, the supply amount corresponding to an operation extent of the traveling operation device.
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公开(公告)号：US20190119884A1
公开(公告)日：2019-04-25
申请号：US16228561
申请日：2018-12-20
Applicant: KUBOTA CORPORATION
Inventor： Hiroshi HORII
Abstract: A working machine includes a hydraulic pump, a first traveling device to be driven by a first traveling hydraulic actuator, a second traveling device to be driven by a second traveling hydraulic actuator, a first output tube to connect a first output port of the hydraulic pump to the first traveling hydraulic actuator, a second output tube to connect a second output port of the hydraulic pump to the second traveling hydraulic actuator, a first operation device to operate the first traveling device, a second operation device to operate the second traveling device and a correction mechanism to equalize a driving force of the first traveling hydraulic actuator and another driving force of the second traveling hydraulic actuator when the first operation device and the second operation device are operated each at same operation extents to perform a straight-traveling operation.
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