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1. 发明公开

EP4273330A1 WORKING MACHINE AND CONTROL METHOD FOR WORKING MACHINE 审中-实审
公开(公告)号：EP4273330A1
公开(公告)日：2023-11-08
申请号：EP22774608.8
申请日：2022-01-20
申请人： Komatsu Ltd.
发明人： TAKENO, Akira , KITAO, Shinichi , KOYAMA, Akihiro
IPC分类号： E02F9/22 , E02F9/24 , E02F9/26 , B60W30/09
摘要： A wheel loader (100) comprises a vehicle body (1), a travel direction detecting section (72), a rearward detecting section (71), a braking section (40), a shut-off valve (45), and a control system (26). The vehicle body (1) is able to travel. The rearward detecting section (71) detects an object in the rearward direction (example of a predetermined direction) of the vehicle body (1). The braking section (40) is able to exert a braking force by implementing automatic braking that automatically causes the vehicle body (1) to brake based on detection of an object by the object detecting section. The shut-off valve (45) sets the braking section (40) so that the braking force by the automatic braking can be or cannot be exerted. The control system (26) controls the shut-off valve (45) to set the braking section (40) so that the braking force can be exerted when the vehicle body (1) is traveling in the rearward direction, and to set the braking section (40) so that the braking force cannot be exerted when the vehicle body (1) is traveling in a direction other than the rearward direction.

2. 发明公开

EP2716939A1 WORKS VEHICLE AND METHOD FOR CONTROLLING WORKS VEHICLE 有权
标题翻译：工作车辆和控制工作车辆的方法
公开(公告)号：EP2716939A1
公开(公告)日：2014-04-09
申请号：EP12850732.4
申请日：2012-09-04
申请人： Komatsu, Ltd.
发明人： SHIRAO, Atsushi , OASA, Takahisa , KITAO, Shinichi
IPC分类号： F16H61/438 , F16H61/4061 , F16H61/431
CPC分类号： F15B15/20 , F16H61/4061 , F16H61/431 , F16H61/438
摘要： A pump displacement control cylinder is configured to control the displacement of a hydraulic pump according to pressure of hydraulic fluid which is supplied to the pump displacement control cylinder. The pump displacement control cylinder is configured to switch the discharge direction of the hydraulic fluid from the hydraulic pump according to the supply direction of the hydraulic fluid to the pump displacement control cylinder. A forward and backward progression switching valve is configured to switch the supply direction of the hydraulic fluid to the pump displacement control cylinder. A pressure control valve is configured to control the pressure of the hydraulic fluid which is supplied to the pump displacement control cylinder according to a command value which is input to the pressure control valve. A forward and backward progression operation member is configured to be operated in order to switch forward and backward progression of the vehicle. A control section is configured to execute pump shuttle control which reduces the command value to the pressure control valve when switching between forward and backward progression using the forward and backward progression operation member.
摘要翻译：泵容量控制缸构造成根据供应到泵容量控制缸的液压流体的压力来控制液压泵的排量。泵容量控制缸被构造成根据液压流体的供应方向将来自液压泵的液压流体的排出方向切换到泵容量控制缸。前进和后退切换阀构造成将液压流体的供应方向切换到泵容量控制缸。压力控制阀构造成根据输入到压力控制阀的指令值来控制供应到泵容量控制气缸的液压流体的压力。前进和后退前进操作构件被配置为操作以切换车辆的向前和向后行进。控制部分被配置为执行泵梭动控制，其在使用前进和后退前进操作部件在向前和向后前进之间切换时减小到压力控制阀的命令值。

3. 发明公开

EP4163445A1 WORK MACHINE 审中-实审
公开(公告)号：EP4163445A1
公开(公告)日：2023-04-12
申请号：EP21874882.0
申请日：2021-07-29
申请人： Komatsu Ltd.
发明人： KITAO, Shinichi , OKABE, Kazuyoshi
IPC分类号： E02F9/22 , E02F9/24 , E02F9/26 , B60T7/12 , G08G1/16 , F16F9/28 , F16F9/50 , F16F15/02
摘要： This wheel loader (10) has a vehicle body (20), lift cylinders (16), a hydraulic circuit (61), an accumulator (63), and a controller (27). The vehicle body (20) has a work implement (3). The lift cylinders (16) drive the work implement (3). The hydraulic circuit (61) is connected to the lift cylinders (16). The accumulator (63) is connected to the hydraulic circuit (61) through an on/off valve (62). The controller (27) switches the on/off valve (62) to the open position when pitching is predicted to occur on the vehicle body (20).

4. 发明授权

EP2716939B1 WORKS VEHICLE AND METHOD FOR CONTROLLING WORKS VEHICLE 有权
标题翻译：商用车及其控制方法商用车
公开(公告)号：EP2716939B1
公开(公告)日：2015-04-15
申请号：EP12850732.4
申请日：2012-09-04
申请人： Komatsu, Ltd.
发明人： SHIRAO, Atsushi , OASA, Takahisa , KITAO, Shinichi
IPC分类号： F16H61/438 , F16H61/4061 , F16H61/431
CPC分类号： F15B15/20 , F16H61/4061 , F16H61/431 , F16H61/438

5. 发明公开

EP4166727A1 WORK MACHINE AND METHOD FOR CONTROLLING WORK MACHINE 审中-实审
公开(公告)号：EP4166727A1
公开(公告)日：2023-04-19
申请号：EP21874865.5
申请日：2021-07-19
申请人： Komatsu Ltd.
发明人： OKABE, Kazuyoshi , KITAO, Shinichi , TAKENO, Akira
IPC分类号： E02F9/24 , E02F9/26
摘要： This wheel loader (1) comprises a vehicle body (1), a rearward detecting section (71), and a controller (26). The vehicle body (1) includes a vehicle body frame (2), front tires (4), rear tires (7), and a work implement (3) disposed in front of the vehicle body frame (2). The rearward detecting section (71) detects an obstacle (S) when traveling in reverse due to the driving of the vehicle body frame (2), the front tires (4), and the rear tires (7). The controller (26) determines to validate or invalidate a first control according to the detection of an obstacle (S), the state of traveling in reverse, and the state of scooping work by the work implement (3), and validates the first control based on the scooping work state while the first control is invalidated.

6. 发明公开

EP3967813A1 WORK MACHINE AND CONTROL METHOD FOR WORK MACHINE 审中-实审
公开(公告)号：EP3967813A1
公开(公告)日：2022-03-16
申请号：EP20870878.4
申请日：2020-09-14
申请人： Komatsu Ltd.
发明人： OKABE, Kazuyoshi , YASUMURA, Renia , MINATO, Hirofumi , KITAO, Shinichi
IPC分类号： E02F9/02 , E02F9/24 , E02F9/26 , B60T7/12 , B60T13/12
摘要： The wheel loader (10) includes a rear detection section (71), a state detection section (72), and a controller (26). The rear detection section (71) detects rear of the vehicle body (1) when moving backward. The state detection section (72) detects a state of the vehicle body (1). The controller (26) brakes the vehicle body (1) based on detection of the state detection section (72) and detection of the rear detection section (71).

7. 发明授权

EP2594828B1 CONTROL DEVICE AND CONTROL METHOD FOR WORK VEHICLE 有权
标题翻译：控制装置和控制方法是用于商用车
公开(公告)号：EP2594828B1
公开(公告)日：2016-07-20
申请号：EP12776653.3
申请日：2012-04-17
申请人： Komatsu Ltd.
发明人： KITAO, Shinichi , SHIRAO, Atsushi
IPC分类号： F16H61/421 , E02F9/22 , F16H61/4035 , F16H61/44 , E02F9/20 , F16H61/431 , F16H61/444
CPC分类号： E02F9/2221 , E02F9/2079 , E02F9/2235 , E02F9/2253 , E02F9/2289 , E02F9/2292 , E02F9/2296 , F16H61/4035 , F16H61/431 , F16H61/44 , F16H61/444 , Y10T477/73

8. 发明公开

EP2594828A1 CONTROL DEVICE AND CONTROL METHOD FOR WORK VEHICLE 有权
标题翻译： STEUERVORRICHTUNG UND STEERERVERFAHRENFÜREIN NUTZFAHRZEUG
公开(公告)号：EP2594828A1
公开(公告)日：2013-05-22
申请号：EP12776653.3
申请日：2012-04-17
申请人： Komatsu Ltd.
发明人： KITAO, Shinichi , SHIRAO, Atsushi
IPC分类号： F16H61/421 , E02F9/22 , F16H61/4035 , F16H61/44
CPC分类号： E02F9/2221 , E02F9/2079 , E02F9/2235 , E02F9/2253 , E02F9/2289 , E02F9/2292 , E02F9/2296 , F16H61/4035 , F16H61/431 , F16H61/44 , F16H61/444 , Y10T477/73
摘要： To smoothly execute a clutch operation by reducing a shock caused by a pressure variation when a clutch is released and engaged and preventing a damage of a hydraulic circuit and the like while keeping low fuel consumption, in a one-pump/two-motors HST, a control apparatus of a working vehicle, in which a clutch is released or engaged so that power is transmitted to an output shaft of an HST motor 10a via a clutch 13 and the working vehicle travels by powers of the HST motors 10a and 10b, includes an HST controller 31 for determining a working vehicle load of the working vehicle from a throttle output amount and an engine speed of an engine 1, executing control for reducing a pump injection amount of an HST pump 4 under a restriction of an upper limit injection amount of the HST pump 4 predetermined based on the working vehicle load at the time of release shift control of the clutch 13, and executing control for increasing an pump injection amount of the HST pump 4 under a restriction of a lower limit injection amount of the HST pump 4 predetermined based on the working vehicle load at the time of engagement shift control of the clutch 13.
摘要翻译：为了顺利地执行离合器操作，通过减少离合器释放和接合时的压力变化引起的冲击，并且在保持低燃料消耗的同时防止液压回路等的损坏，在单泵/双马达HST中，一种作业车辆的控制装置，其中离合器被释放或接合，使得动力经由离合器13传递到HST电动机10a的输出轴，并且工作车辆通过HST电动机10a和10b的动力行驶，包括用于根据发动机1的节气门输出量和发动机转速来确定作业车辆的作业车辆负荷的HST控制器31，执行在上限喷射量的限制下减少HST泵4的泵喷射量的控制的HST泵4基于离合器13的解除变速控制时的作业车辆负荷而预先确定，并且执行用于在限制下增加HST泵4的泵喷射量的控制基于离合器13的接合变速控制时的作业车辆负荷而预先确定的HST泵4的下限喷射量。

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