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公开(公告)号：US09656840B2
公开(公告)日：2017-05-23
申请号：US14422877
申请日：2014-10-08
Applicant: Komatsu Ltd.
Inventor： Taishi Oiwa , Shinji Kaneko
IPC: G06F7/70 , F16D39/00 , B60K28/16 , B66F9/075 , F16H61/438 , F16H61/431 , B66F9/07
CPC classification number: B66F9/07572 , B60Y2200/15 , B66F9/07 , F16H61/431 , F16H61/438
Abstract: A work vehicle obtains determination information from information upon detecting inverting operation, the information upon detecting inverting operation indicating a traveling state of the work vehicle when an advancing direction detection device detects an inverting operation of an advancing direction switching device for inverting an advancing direction of the work vehicle while the work vehicle travels; decreases a first traveling instruction for allowing the work vehicle to travel in the advancing direction of the work vehicle upon the detection of the inverting operation, and increases a second traveling instruction for allowing the work vehicle to travel in the direction opposite to the advancing direction of the work vehicle upon the detection of the inverting operation, after detecting the inverting operation; and sets the first traveling instruction to 0 when speed information indicating a traveling state of the work vehicle becomes the determination information.
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公开(公告)号：US20160084275A1
公开(公告)日：2016-03-24
申请号：US14416807
申请日：2014-09-18
Applicant: Komatsu Ltd.
Inventor： Shinji Kaneko , Yoshitaka Onodera , Yoshifumi Shitara , Taishi Oiwa , Jun Hashimoto
IPC: F15B11/042
CPC classification number: B66F9/07572 , B60Y2200/15 , B66F9/22 , F16H59/44 , F16H59/48 , F16H61/431 , F16H61/462
Abstract: A work vehicle including: a traveling hydraulic pump of a variable displacement type driven by engine; a hydraulic motor forming a closed circuit with the traveling hydraulic pump and driven by operating oil discharged from the traveling hydraulic pump; a drive wheel driven by the hydraulic motor; and a control device determining whether an operator of the work vehicle has an intention of decelerating the work vehicle, and when the operator has an intention of decelerating the work vehicle and when the work vehicle starts to increase its speed, the control device causes a capacity ratio obtained by dividing a capacity of the hydraulic motor by a capacity of the traveling hydraulic pump, to be equal to or larger than a value when the work vehicle starts to increase its speed, according to an increasing amount in the speed of the work vehicle.
Abstract translation: 一种工作车辆，包括：由发动机驱动的可变排量型行驶液压泵; 液压马达与行驶液压泵形成闭合回路，并由从行驶液压泵排出的工作油驱动; 由液压马达驱动的驱动轮; 以及控制装置，确定作业车辆的操作者是否具有使作业车辆减速的意图，并且当操作者意图使作业车辆减速时，以及当工作车辆开始增加速度时，控制装置产生容量 根据行驶液压泵的容量将液压马达的容量除以工作车辆开始增加速度的值而得到的比例，根据作业车辆的速度的增加量 。
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3.发明申请公开(公告)号：US20150034424A1
公开(公告)日：2015-02-05
申请号：US13701033
申请日：2012-04-23
Applicant: Komatsu Ltd.
Inventor： Shinji Kaneko
CPC classification number: B66F17/003 , B60K28/04 , B66F9/22 , B66F9/24 , F02D29/04 , F02D41/021
Abstract: An engine-powered forklift truck including a work device which is hydraulically driven by an oil hydraulic pump whose driving source is an engine, and including a load handling interlock mechanism which brings a work device operation into a locked state by turning a key switch off or turning a seat switch off, includes: a release control apparatus configured to, when the locked state exists, release the locked state on condition that the key switch is ON, the seat switch is ON, and the engine is rotated under a predetermined engine speed or more.
Abstract translation: 一种发动机动力叉车，其包括由驱动源是发动机的油压泵液压驱动的作业装置，并且包括负载处理互锁机构，其通过关闭钥匙开关将工作装置操作带入锁定状态， 关闭座椅开关，包括：释放控制装置，被配置为当锁定状态存在时，在钥匙开关处于ON状态的情况下释放锁定状态，座椅开关接通，并且发动机在预定的发动机转速下旋转 或者更多。
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公开(公告)号：US20160311432A1
公开(公告)日：2016-10-27
申请号：US14358367
申请日：2013-12-27
Applicant: KOMATSU LTD.
Inventor： Shinji Kaneko , Taishi Oiwa
CPC classification number: B60W30/18 , B60W10/04 , B60W10/06 , B60W2520/10 , B60W2540/10 , B60W2710/06 , B60W2720/10 , B66F9/07572 , B66F9/22 , F16H61/431 , F16H61/47
Abstract: A control device includes a target vehicle speed converter converting a first accelerator opening detected by an accelerator opening sensor into a target vehicle speed, an accelerator opening target value setting unit calculating a second accelerator opening by feedback control so that a deviation between the target vehicle speed and an actual vehicle speed becomes zero, an addition unit adding the first and second accelerator openings to obtain a third accelerator opening, a first maximum absorption torque calculator calculating a first maximum absorption torque of a traveling hydraulic pump based on the third accelerator opening, a second maximum absorption torque calculator calculating a second maximum absorption torque of the traveling hydraulic pump based on a rotational speed of the engine, and an HST pump electromagnetic proportional control output current converter converting a smaller one of the first and second maximum absorption torques into a target absorption torque.
Abstract translation: 控制装置包括将由加速器开度传感器检测出的第一加速器开度转换为目标车速的目标车速转换器，加速器开度目标值设定单元，通过反馈控制来计算第二加速器开度，使得目标车速 并且实际车速变为零;加法单元，加入第一和第二加速器开口以获得第三加速器开度;第一最大吸收扭矩计算器，基于第三加速器开度计算行进液压泵的第一最大吸收扭矩; 第二最大吸收扭矩计算器基于发动机的转速计算行驶液压泵的第二最大吸收扭矩;以及HST泵电磁比例控制输出电流转换器，将第一和第二最大吸收转矩中的较小的一个转换为目标 吸收扭矩。
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公开(公告)号：US20160257540A1
公开(公告)日：2016-09-08
申请号：US14427818
申请日：2014-09-18
Applicant: KOMATSU LTD.
Inventor： Shinji Kaneko , Taishi Oiwa , Yoshio Yokouchi , Hideyuki Hiraiwa , Hiroshi Yamamoto
CPC classification number: B66F9/07572 , B66F9/07 , B66F9/20 , B66F9/22 , E02F9/2246 , F02D29/02 , F02D29/04 , F02D41/10 , F02D41/3005
Abstract: A forklift includes a hydraulic pump being a variable displacement pump driven by an engine, a hydraulic motor driven with fluid from the pump, a storage storing first and second groups, and a predetermined lift pressure setting value, the first group including output characteristics each representing a relation between a rotational speed of the engine and a torque of the engine for each lift pressures, the second group including output characteristics each representing a relation between the rotational speed and the torque for each pump pressures, and determining a greater one of first and second torques as a target torque of the engine, the first torque being calculated from one selected from the first group using the lift pressure setting value or an actual lift pressure and the rotational speed, the second torque being calculated from one selected from the second group using the pump pressure and the rotational speed
Abstract translation: 叉车包括作为由发动机驱动的可变排量泵的液压泵，由泵的流体驱动的液压马达，存储第一和第二组的存储器以及预定的提升压力设定值，第一组包括每个代表 所述第二组包括各自代表每个泵压力的转速和转矩之间的关系的输出特性，以及确定第一和第二组中的较大的一个 第二扭矩作为发动机的目标扭矩，使用提升压力设定值或实际升程压力和转速从第一组中选择的一个中计算出第一扭矩，第二扭矩由从第二组中选择的一个计算得到 使用泵的压力和转速
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Patent Agency Ranking
公开(公告)号：US20160082966A1
公开(公告)日：2016-03-24
申请号：US14419337
申请日：2014-09-18
Applicant: Komatsu Ltd.
Inventor： Shinji Kaneko , Yoshitaka Onodera , Yoshifumi Shitara , Taishi Oiwa , Jun Hashimoto
IPC: B60W30/188 , B60W30/18
CPC classification number: B60W30/188 , B60W30/18045 , B60W2300/121 , B60W2520/04 , B60W2520/06 , B60W2720/30
Abstract: A work vehicle includes a variable displacement hydraulic pump driven by an engine, a hydraulic motor forming a closed circuit with the pump and driven by hydraulic fluid discharged from the pump, wheels driven by the motor to allow the work vehicle to travel, a selector detecting an operating state of a switch switching the traveling of the work vehicle between forward and backward, and a controller. When the selector detects a reversal operation of the switch to reverse the traveling direction when the work vehicle travels, the controller sets relationship between the vehicle speed of the work vehicle and the upper limit of the rotational speed of the engine such that the upper limit increases as the absolute value of the vehicle speed approaches zero. The controller obtains an upper limit of the rotational speed from the relationship and a vehicle speed of the work vehicle.
Abstract translation: 工作车辆包括由发动机驱动的可变排量液压泵，液压马达与泵形成闭合回路并由泵排出的液压流体驱动，由电动机驱动的车轮以允许作业车辆行驶，选择器检测 开关将工作车辆的前进和后退的行驶切换到开关的操作状态和控制器。 当工作车辆行驶时，当选择器检测到反转操作以使行进方向反转时，控制器设定作业车辆的车速与发动机的转速的上限之间的关系，使得上限增加 因为车速的绝对值接近零。 控制器根据作业车辆的关系和车速获得转速的上限。
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公开(公告)号：US20150183625A1
公开(公告)日：2015-07-02
申请号：US14369769
申请日：2013-12-27
Applicant: KOMATSU LTD.
Inventor： Shinji Kaneko , Taishi Oiwa
IPC: B66F9/075
CPC classification number: B66F9/07572 , B66F9/22
Abstract: A forklift including a variable displacement HST pump driven by an engine, a hydraulic motor that forms a closed circuit with the HST pump therebetween and is driven by hydraulic oil discharged from the HST pump, and driving wheels driven by the hydraulic motor, wherein a control device calculates an inching rate corresponding to an operation amount of an inching pedal, and sets a lower limit of the inching rate to a value greater than 0, only in a state in which both of an accelerator pedal and the inching pedal are operated.
Abstract translation: 一种包括由发动机驱动的可变排量HST泵的叉车，与HST泵在其间形成闭合回路并由HST泵排出的液压油驱动的液压马达和由液压马达驱动的驱动轮，其中控制 装置计算与微动踏板的操作量相对应的微动速度，并且仅在加速踏板和微动踏板两者都被操作的状态下将微动速度的下限设定为大于0的值。
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公开(公告)号：US20180231118A1
公开(公告)日：2018-08-16
申请号：US15511342
申请日：2016-11-11
Applicant: Komatsu Ltd.
Inventor： Shinji Kaneko
IPC: F16H61/4017 , F16H61/478 , F16H61/421 , F16H61/4035
CPC classification number: F16H61/4017 , B66F9/04 , B66F9/22 , F16H59/44 , F16H61/4035 , F16H61/4157 , F16H61/421 , F16H61/478
Abstract: A work machine includes a relief valve that is installed in a hydraulic line that forms a closed circuit between a hydraulic pump and a hydraulic motor, and sets a relief pressure of the hydraulic line; a braking device that brakes a traveling device attached to the hydraulic motor; and an operation mechanism that operates the braking device. When a traveling speed of the traveling device is equal to or more than a predetermined threshold, the relief pressure is changed from a first pressure that is a pressure before a braking operation is performed by the operation mechanism to a second pressure that is lower than the first pressure.
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公开(公告)号：US09580075B2
公开(公告)日：2017-02-28
申请号：US14358367
申请日：2013-12-27
Applicant: Komatsu Ltd.
Inventor： Shinji Kaneko , Taishi Oiwa
CPC classification number: B60W30/18 , B60W10/04 , B60W10/06 , B60W2520/10 , B60W2540/10 , B60W2710/06 , B60W2720/10 , B66F9/07572 , B66F9/22 , F16H61/431 , F16H61/47
Abstract: A control device includes a target vehicle speed converter converting a first accelerator opening detected by an accelerator opening sensor into a target vehicle speed, an accelerator opening target value setting unit calculating a second accelerator opening by feedback control so that a deviation between the target vehicle speed and an actual vehicle speed becomes zero, an addition unit adding the first and second accelerator openings to obtain a third accelerator opening, a first maximum absorption torque calculator calculating a first maximum absorption torque of a traveling hydraulic pump based on the third accelerator opening, a second maximum absorption torque calculator calculating a second maximum absorption torque of the traveling hydraulic pump based on a rotational speed of the engine, and an HST pump electromagnetic proportional control output current converter converting a smaller one of the first and second maximum absorption torques into a target absorption torque.
Abstract translation: 控制装置包括将由加速器开度传感器检测出的第一加速器开度转换为目标车速的目标车速转换器，加速器开度目标值设定单元，通过反馈控制来计算第二加速器开度，使得目标车速 并且实际车速变为零;加法单元，加入第一和第二加速器开口以获得第三加速器开度;第一最大吸收扭矩计算器，基于第三加速器开度计算行进液压泵的第一最大吸收扭矩; 第二最大吸收扭矩计算器基于发动机的转速计算行驶液压泵的第二最大吸收扭矩;以及HST泵电磁比例控制输出电流转换器，将第一和第二最大吸收转矩中的较小的一个转换为目标 吸收扭矩。
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公开(公告)号：US20160257539A1
公开(公告)日：2016-09-08
申请号：US14425919
申请日：2014-09-19
Applicant: KOMATSU LTD.
Inventor： Shinji Kaneko , Yoshitaka Onodera , Yoshifumi Shitara , Taishi Oiwa , Jun Hashimoto
CPC classification number: B66F9/07572 , B60K17/10 , B60Y2200/15 , B66F9/07 , B66F9/22 , F02D11/105 , F02D29/04 , F02D41/021 , F02D41/10 , F02D2200/501 , F02D2200/602 , F16H61/42 , F16H61/431
Abstract: A work vehicle includes an accelerator operation amount generator receiving an actual accelerator operation amount of an accelerator operator to generate a control accelerator operation amount; an engine controller controlling the engine according to the control accelerator operation amount; and a storage storing a table in which an increasing speed for the control accelerator operation amount is set, wherein the accelerator operation amount generator obtains a difference between a converted accelerator operation amount of the accelerator operator converted from a rotating speed of the engine in a current control cycle and a control accelerator operation amount obtained in the last control cycle, determines an increasing speed of the control accelerator operation amount from the difference by referring to the table, and changes the control accelerator operation amount to an actual operation amount in the current control cycle with the determined increasing speed.
Abstract translation: 工作车辆包括加速器操作量发生器，其接收加速器操作器的实际加速器操作量，以产生控制加速器操作量; 发动机控制器，其根据所述控制加速器操作量控制所述发动机; 以及存储装置，其中设置有用于控制加速器操作量的增加速度的表，其中，所述加速器操作量发生器获得从当前的发动机的转速转换的加速器操作器的转换加速器操作量之间的差 控制循环和控制加速器操作量，通过参照该表从该差确定控制加速器操作量的增加速度，并将控制加速器操作量改变为当前控制中的实际操作量 以确定的增加速度循环。
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