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1. 发明授权

US11681297B2 Autonomous vehicle and self-location estimating method in autonomous vehicle 有权
公开(公告)号：US11681297B2
公开(公告)日：2023-06-20
申请号：US17190049
申请日：2021-03-02
申请人： KABUSHIKI KAISHA TOYOTA JIDOSHOKKI , SOUTHWEST RESEARCH INSTITUTE
发明人： Yuki Ueda , Takashi Uno , Daniel D'Souza , Joseph Auchter
IPC分类号： G05D1/02 , G06T7/73 , B60W60/00 , G01C21/00 , B60W40/06
CPC分类号： G05D1/0231 , B60W40/06 , B60W60/001 , G01C21/3822 , G05D1/0274 , G06T7/74 , B60W2420/42 , G06T2207/30252
摘要： An autonomous vehicle includes first and second road surface image obtaining devices that are located on a bottom surface of the vehicle body and obtain images of a road surface below the vehicle body, respectively. The autonomous vehicle also includes a memory unit that stores a map image of the road surface, the map image being associated with geographical location information. The autonomous vehicle further includes first and second self-location estimating units that each compare a feature extracted from the image of the road surface obtained by corresponding one of the first and second road surface image obtaining devices with a feature extracted from the map image, thereby estimating a self-location of the autonomous vehicle.

2. 发明授权

US11440583B2 Hydraulic drive device for industrial vehicle 有权
公开(公告)号：US11440583B2
公开(公告)日：2022-09-13
申请号：US16759495
申请日：2018-10-05
申请人： KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
发明人： Takashi Uno , Naoya Yokomachi , Yuki Ueda , Tsutomu Matsuo
IPC分类号： F16D31/00 , F15B13/00 , F15B11/00 , B62D5/065 , B62D5/07 , B62D5/08 , B66F9/22
摘要： A hydraulic drive device for an industrial vehicle includes a variable displacement pump, a displacement control valve, a power steering cylinder, a power steering valve, a loading cylinder, a loading valve, a hydraulic oil passage, and a pilot line. The displacement control valve controls the variable displacement pump to increase displacement of the variable displacement pump when differential pressure between discharge pressure of hydraulic oil discharged from the variable displacement pump and pilot pressure generated in the pilot line is smaller than a predetermined set pressure. A spool of the loading valve is provided with a groove portion that forms a communication passage that makes communication between the hydraulic oil passage and the pilot line at a neutral position of the loading valve when the power steering valve is located in a neutral position.

3. 发明授权

US10844879B2 Hydraulic drive device for cargo vehicle 有权
公开(公告)号：US10844879B2
公开(公告)日：2020-11-24
申请号：US16461191
申请日：2017-10-20
申请人： KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
发明人： Yuki Ueda
IPC分类号： F15B11/044 , F15B13/01 , F15B11/00 , B66F9/22
CPC分类号： F15B11/044 , B66F9/22 , F15B11/003 , F15B13/01 , F15B2211/20515 , F15B2211/20538 , F15B2211/30515 , F15B2211/3116 , F15B2211/40507 , F15B2211/40515 , F15B2211/41581 , F15B2211/46 , F15B2211/7052 , F15B2211/761
摘要： A hydraulic drive device for a cargo vehicle includes a hydraulic cylinder supplying and discharging of hydraulic oil, an operation member that operates the hydraulic cylinder, a hydraulic pump, a lowering oil path connecting the hydraulic cylinder and the hydraulic pump, an operation valve disposed in the lowering oil path, a bypass oil path that branches off from the lowering oil path, a bypass flow rate control valve disposed in the bypass oil path and that controls a bypass flow rate, and a resistance element that is disposed closer to the hydraulic cylinder than the operation valve in the lowering oil path and that increases a fluid resistance. A pilot flow path of the bypass flow rate control valve is connected to a part of the lowering oil path between the hydraulic cylinder and the resistance element.

4. 发明申请

US20150013324A1 FORKLIFT HYDRAULIC CONTROL APPARATUS 有权
标题翻译：叉车液压控制装置
公开(公告)号：US20150013324A1
公开(公告)日：2015-01-15
申请号：US14375580
申请日：2013-01-16
申请人： KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
发明人： Tsutomu Matsuo , Hirohiko Ishikawa , Yuki Ueda , Tetsuya Goto , Junichi Morita
IPC分类号： B66F9/22 , F15B13/02
CPC分类号： B66F9/22 , F15B11/02 , F15B13/02 , F15B21/14 , F15B2211/20569 , F15B2211/6336 , F15B2211/761 , F15B2211/88
摘要： An outlet port of a hydraulic pump/motor and a bottom chamber of a lift cylinder are connected to each other by a hydraulic fluid passage. A hydraulic fluid passage that is connected to a hydraulic fluid tank is formed to branch off the hydraulic fluid passage. A flow control valve controls the hydraulic fluid delivered from the lift cylinder when the fork is lowered, thereby regulating the flow rate of hydraulic fluid supplied to the hydraulic pump/motor and the flow rate of hydraulic fluid supplied to the hydraulic fluid tank. If regenerative operation can be performed, the flow control valve is closed and hydraulic fluid is delivered to the hydraulic pump/motor. If regenerative operation cannot be performed, the flow control valve is opened and hydraulic fluid is delivered to the hydraulic fluid tank. In either case, the fork can be lowered at an instructed speed.
摘要翻译：液压泵/马达的出口和提升缸的底部腔室通过液压流体通道相互连接。连接到液压油箱的液压流体通道形成为从液压流体通道分支。当叉子下降时，流量控制阀控制从提升缸输送的液压流体，从而调节供给到液压泵/马达的液压流体的流量和供给到液压油箱的液压流体的流量。如果可以进行再生运转，则流量控制阀关闭，液压油被输送到液压泵/马达。如果无法进行再生运转，则流量控制阀打开，液压油输送到液压油箱。在任一情况下，可以以指示的速度降低叉。

5. 发明授权

US10358329B2 Hydraulic control device of forklift truck 有权
公开(公告)号：US10358329B2
公开(公告)日：2019-07-23
申请号：US15092161
申请日：2016-04-06
申请人： KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
发明人： Yuki Ueda , Naoya Yokomachi , Tsutomu Matsuo , Takashi Uno
IPC分类号： B66F9/22 , F15B11/16
摘要： A hydraulic control device of a forklift truck includes a first hydraulic cylinder, a first instructing member, a second hydraulic cylinder, a second instructing member, a hydraulic pump, an electric motor, a first oil passage, a lowering control valve, a second oil passage that is branched from the first oil passage at a junction, a flow control valve, a first pilot passage through which pressure in the first oil passage at a position between the first hydraulic cylinder and the lowering control valve is applied to a first accommodating chamber of the flow control valve as the pressure upstream of the lowering control valve, and a second pilot passage through which pressure in the first oil passage at a position between the lowering control valve and the hydraulic pump is applied to a second accommodating chamber of the flow control valve as the pressure downstream of the lowering control valve.

6. 发明授权

US09957982B2 Lifting device 有权
公开(公告)号：US09957982B2
公开(公告)日：2018-05-01
申请号：US14436263
申请日：2012-10-18
申请人： KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
发明人： Yuki Ueda , Tsutomu Matsuo , Hirohiko Ishikawa
IPC分类号： F15B11/04 , B66F9/22
CPC分类号： F15B11/0413 , B66F9/22 , F15B2211/20569 , F15B2211/30505 , F15B2211/30515 , F15B2211/3057 , F15B2211/353 , F15B2211/355 , F15B2211/46 , F15B2211/473 , F15B2211/7052 , F15B2211/8606
摘要： An electromagnetic switching valve, for which the maximum opening is set to be small, is disposed on piping between a lift cylinder and a hydraulic pump motor. A pilot check valve, for which the maximum opening is set to be larger than the electromagnetic switching valve, is disposed on piping, different from the piping, between the lift cylinder and the hydraulic pump motor. In addition, during lowering operations, first, the electromagnetic switching valve is opened, and then after the same is opened, the pilot check valve is opened after a prescribed time has passed. Thus, the shock generated when lowering an object to be raised/lowered is reduced and a fork is operated quickly.

7. 发明授权

US10816018B2 Hydraulic driving device of industrial vehicle 有权
公开(公告)号：US10816018B2
公开(公告)日：2020-10-27
申请号：US16053202
申请日：2018-08-02
申请人： KABUSHIKI KAISHA TOYOTA JIDOSHOKKI , NISHINA INDUSTRIAL CO., LTD.
发明人： Yuki Ueda , Koshiro Saji , Shigeto Nakajima , Yukinori Takeda , Koichi Kinoshita
IPC分类号： F15B13/04 , F15B11/10 , F15B11/16 , F15B13/042 , F15B13/06 , F16K11/07 , B62D5/087 , B66F9/22
摘要： A hydraulic driving device of an industrial vehicle includes: a tank which stores hydraulic oil; a hydraulic pump which includes a suction port sucking the hydraulic oil and a discharge port discharging the hydraulic oil; a hydraulic cylinder which is driven by the hydraulic oil discharged from the discharge port of the hydraulic pump; a direction switching valve which is disposed among the hydraulic pump, the tank, and the hydraulic cylinder and switches a hydraulic oil flow direction in response to an operation state of operation means for driving the hydraulic cylinder; in which the direction switching valve includes a main spool which moves in response to the operation state of the operation means and a flow regulator which is disposed inside the main spool to control a flow rate of the hydraulic oil flowing from the hydraulic cylinder to the tank.

8. 发明授权

US10465667B2 Variable displacement pump 有权
公开(公告)号：US10465667B2
公开(公告)日：2019-11-05
申请号：US15768125
申请日：2016-09-23
申请人： KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
发明人： Tsutomu Matsuo , Naoya Yokomachi , Yuki Ueda , Takashi Uno
IPC分类号： F04B1/32 , F04B1/20 , F04B53/22 , F04B53/16
摘要： Provided is a variable displacement pump which includes a cylinder block including a plurality of cylinder bores formed in a rotation shaft in a circumferential direction and rotating together with the rotation shaft, a piston provided inside each of the plurality of cylinder bores to be slidable, and a swash plate supported to be tiltable with respect to the rotation shaft while a distal end portion of the piston is slidable thereon and which sucks and discharges a working fluid by moving the piston in a reciprocating manner with a stroke in accordance with an inclination angle of the swash plate, the variable displacement pump including: a control piston which includes a piston portion pressing the swash plate and controls the inclination angle of the swash plate; a piston accommodation portion which is formed in the housing and accommodates the piston portion; and a hollow cylindrical guide portion which is disposed between the piston accommodation portion and the piston portion and includes an inner peripheral surface supporting the piston portion to be slidable thereon, in which the housing is formed of a material having higher fatigue strength than the guide portion and the guide portion is formed of a material harder than the housing.

9. 发明授权

US10059575B2 Hydraulic control device for forklift 有权
公开(公告)号：US10059575B2
公开(公告)日：2018-08-28
申请号：US14769836
申请日：2014-02-12
申请人： KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
发明人： Yuki Ueda , Tsutomu Matsuo , Takashi Uno , Hirohiko Ishikawa
IPC分类号： B66F9/22
CPC分类号： B66F9/22
摘要： A hydraulic control device for a forklift includes: a plurality of hydraulic mechanisms including a lifting/lowering hydraulic cylinder and a tilting hydraulic cylinder; a hydraulic pump; an electric motor; a discharge control mechanism; a proportional valve; a flow rate control valve; and a controller. When the lifting/lowering hydraulic cylinder performs a lowering operation of the fork and a hydraulic mechanism other than the lifting/lowering hydraulic cylinder simultaneously performs a further operation, the controller controls an open degree of the proportional valve in accordance with a rotation speed difference of a required lowering operation rotation speed for the hydraulic pump, which is required to perform the lowering operation at an instructed speed that is in accordance with an operation amount of the lifting/lowering control member, and a required further operation rotation speed for the hydraulic pump, which is required to perform the further operation.

10. 发明授权

US09771250B2 Hydraulic control device for forklift 有权
公开(公告)号：US09771250B2
公开(公告)日：2017-09-26
申请号：US14368410
申请日：2012-12-10
申请人： KABUSHIKI KAISHA TOYOTA JIDOSHOKKI , NISHINA INDUSTRIAL CO., LTD.
发明人： Yuki Ueda , Tsutomu Matsuo , Hirohiko Ishikawa , Tetsuya Goto , Junichi Morita , Toshinari Fukatsu , Akira Nakajo , Ryo Yazawa
IPC分类号： B66F9/22 , F15B11/044 , E02F9/22 , F15B11/042
CPC分类号： B66F9/22 , E02F9/2246 , F15B11/0423 , F15B11/044 , F15B2211/20515 , F15B2211/20561 , F15B2211/40515 , F15B2211/41581 , F15B2211/428 , F15B2211/45 , F15B2211/7052 , F15B2211/761
摘要： A hydraulic control device for a forklift includes a hydraulic pump, a single electric motor for driving the hydraulic pump, an outflow control mechanism provided between a lift cylinder and the hydraulic pump, a flow control valve provided between the outflow control mechanism and a draining portion, and a controller. When a lowering operation of a fork and either forward or rearward mast tilting operations of a mast are performed at the same time, the controller controls the electric motor based on a target speed of the hydraulic pump. The flow control valve controls the flow rate of hydraulic fluid from the lift cylinder to the hydraulic pump and the flow rate from the lift cylinder to the draining portion in accordance with the difference between the actual rotation speed of the hydraulic pump and the target rotation speed of the hydraulic pump.

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