公开(公告)号：US11578470B2

公开(公告)日：2023-02-14

申请号：US16466454

申请日：2018-02-15

Applicant: KOMATSU LTD.

Inventor： Junji Harada ,  Shigeru Yamamoto

IPC: A01B67/00 ,  E02F3/43 ,  E02F3/76 ,  E02F3/815 ,  E02F3/84 ,  E02F9/20 ,  E02F9/22 ,  E02F9/26

Abstract: A control system for the work vehicle includes a display, an input device, and a controller. The controller displays a current position of a work vehicle on a screen of a display. The controller receives a first input signal indicating an input operation by an operator from a input device. The controller determines, as a first position, the position of the work vehicle when the first input signal is received. The controller displays the first position on the screen of the display. The controller receives a second input signal indicating an input operation by an operator from the input device. The controller determines, as the second position, the position of the work vehicle when the second input signal is received. The controller determines a target design surface indicating a target trajectory of a work implement based on reference position information including at least the first position and the second position.

公开(公告)号：US11408150B2

公开(公告)日：2022-08-09

申请号：US16482029

申请日：2018-04-10

Applicant: KOMATSU LTD.

Inventor： Shigeru Yamamoto ,  Eiji Ishibashi ,  Takahiro Shimojo

IPC: E02F3/84 ,  E02F9/26 ,  E02F3/76

Abstract: A work vehicle includes a work implement. A control system for the work vehicle includes a controller. The controller obtains first topographical data indicative of a topography of a work target before filling work. The controller obtains blade tip position data indicative of a blade tip position of the work implement during the filling work. The controller obtains second topographical data indicative of a compacted topography after the filling work. The controller determines a compression rate of the work target from the first topographical data, the blade tip position data, and the second topographical data.

公开(公告)号：US09091342B2

公开(公告)日：2015-07-28

申请号：US14211340

申请日：2014-03-14

Applicant: KOMATSU LTD.

Inventor： Eiji Ishibashi ,  Masayuki Mukaino ,  Shigeru Yamamoto ,  Yoshitaka Onodera ,  Takao Ishihara

IPC: G06F7/00 ,  F16H61/4008 ,  E02F9/20 ,  E02F9/22 ,  F16H61/421 ,  F16H61/431 ,  F16H61/47 ,  F16H61/02 ,  F16H61/40 ,  F04B49/24 ,  F17D1/08 ,  F04B27/08 ,  F16H59/06 ,  F16H59/44 ,  F16H59/68 ,  F16H59/36 ,  B60W10/06 ,  B60W10/11 ,  F16H59/46 ,  F16H61/06

CPC classification number: F16H61/4008 ,  B60W10/06 ,  B60W10/11 ,  E02F9/202 ,  E02F9/2253 ,  F04B27/08 ,  F04B49/24 ,  F16H59/06 ,  F16H59/44 ,  F16H59/46 ,  F16H61/0213 ,  F16H61/061 ,  F16H61/40 ,  F16H61/421 ,  F16H61/431 ,  F16H61/47 ,  F16H2059/366 ,  F16H2059/6861 ,  F17D1/08 ,  Y10T477/679 ,  Y10T477/68

Abstract: A control device controls a hydrostatic transmission vehicle having a hydrostatic transmission including a variable displacement pump and a variable displacement hydraulic motor. The control device is configured to set a set vehicle speed based on a forward/rearward travel command and a gear stage command instructed by an operator, to set a torque limit usable for the hydrostatic transmission based on an engine speed, to set a vehicle speed limit based on a pressure in the hydraulic circuit and the torque limit, to select a lower one of the set vehicle speed and the vehicle speed limit, and to control respective displacements of the variable displacement pump and the variable displacement hydraulic motor based on the selected vehicle speed.

Abstract translation: 控制装置控制具有包括可变排量泵和可变排量液压马达的静液压传动装置的液压传动车辆。 控制装置被配置为基于前进/后退行驶指令和操作者指示的档位指令来设定设定的车速，以基于发动机转速设定可用于静液压变速器的转矩限制，以设定车速 基于液压回路中的压力和转矩极限的极限，选择设定车速和车速极限中的较低的一个，并且基于所选择的控制来控制可变排量泵和可变排量液压马达的各个位移 车速。

公开(公告)号：US20140345889A1

公开(公告)日：2014-11-27

申请号：US14131700

申请日：2013-06-12

Applicant: KOMATSU LTD.

Inventor： Kazushi Nakata ,  Shigeru Yamamoto

IPC: E02F3/84 ,  E02F3/76

CPC classification number: E02F3/844 ,  E02F3/7613 ,  E02F3/7618 ,  E02F3/847

Abstract: A work machine includes a vehicle body, a blade supported by the vehicle body, a pair of first hydraulic air of second hydraulic cylinders, a pair of lift stroke sensors and a control unit. The first hydraulic cylinders are configured to lower and raise the blade. The second hydraulic cylinders are configured to tilt the blade forward and backward and left and right. The lift stroke sensors are configured to detect stroke amounts from the pair of first hydraulic cylinders, respectively. The control unit is configured to start actuating the pair of second hydraulic cylinders when the stroke amounts of the pair of first hydraulic cylinders match. The control unit is configured to stop actuating the pair of second hydraulic cylinders based on a magnitude relation between a prescribed threshold and a difference in the stroke amounts of the pair of first hydraulic cylinders.

Abstract translation: 工作机械包括车体，由车身支撑的叶片，第二液压缸的一对第一液压空气，一对提升行程传感器和控制单元。 第一液压缸构造成降低和升高叶片。 第二液压缸被构造成向前和向后以及左右倾斜叶片。 提升行程传感器被配置为分别检测来自该对第一液压缸的冲程量。 控制单元构造成当一对第一液压缸的冲程量相匹配时开始致动该对第二液压缸。 控制单元被构造成基于规定的阈值与一对第一液压缸的行程量的差异之间的大小关系来停止致动该对第二液压缸。

公开(公告)号：US08931572B2

公开(公告)日：2015-01-13

申请号：US14131700

申请日：2013-06-12

Applicant: Komatsu Ltd.

Inventor： Kazushi Nakata ,  Shigeru Yamamoto

IPC: E02F9/22 ,  E02F3/84 ,  E02F3/76

CPC classification number: E02F3/844 ,  E02F3/7613 ,  E02F3/7618 ,  E02F3/847

Abstract: A work machine includes a vehicle body, a blade supported by the vehicle body, a pair of first hydraulic cylinders, a pair of second hydraulic cylinders, a pair of lift stroke sensors and a control unit. The first hydraulic cylinders are configured to lower and raise the blade. The second hydraulic cylinders are configured to tilt the blade forward and backward and left and right. The lift stroke sensors are configured to detect stroke amounts from the pair of first hydraulic cylinders, respectively. The control unit is configured to start actuating the pair of second hydraulic cylinders when the stroke amounts of the pair of first hydraulic cylinders match. The control unit is configured to stop actuating the pair of second hydraulic cylinders based on a magnitude relation between a prescribed threshold and a difference in the stroke amounts of the pair of first hydraulic cylinders.

Abstract translation: 工作机械包括车身，由车身支撑的叶片，一对第一液压缸，一对第二液压缸，一对提升行程传感器和控制单元。 第一液压缸构造成降低和升高叶片。 第二液压缸被构造成向前和向后以及左右倾斜叶片。 提升行程传感器被配置为分别检测来自该对第一液压缸的冲程量。 控制单元构造成当一对第一液压缸的冲程量相匹配时开始致动该对第二液压缸。 控制单元被构造成基于规定的阈值与一对第一液压缸的行程量的差异之间的大小关系来停止致动该对第二液压缸。