公开(公告)号：US20200282824A1

公开(公告)日：2020-09-10

申请号：US16882545

申请日：2020-05-25

Applicant: Kubota Corporation

Inventor： Keigo HONDA ,  Hiroaki NAKAGAWA ,  Daisuke SAKURAI ,  Hiroshi FUJIWARA

IPC: B60K15/03 ,  E02F3/34 ,  E02F9/08 ,  B60K13/04

Abstract: A working machine includes a machine body having a front and a rear opposite to the front in a front-rear direction and an engine mounted in the machine body. A selective catalytic reduction catalyst is provided in the machine body and connected to the machine body and connected to the engine. A fuel tank is provided in the machine body to supply fuel to an engine. A urea aqueous solution tank is to store a urea aqueous solution. The urea aqueous solution tank is connected to the selective catalytic reduction catalyst and provided in the machine body between the engine and the front of the machine body in the front-rear direction. A traveling device support body supports the right traveling device and the left traveling device. The machine body does not rotate with respect to the traveling device support body.

公开(公告)号：US20220153129A1

公开(公告)日：2022-05-19

申请号：US17590825

申请日：2022-02-02

Applicant: Kubota Corporation

Inventor： Keigo HONDA ,  Hiroaki NAKAGAWA ,  Daisuke SAKURAI ,  Hiroshi FUJIWARA

IPC: B60K13/04 ,  E02F9/08

Abstract: A working machine includes a machine body having a front-rear direction and a right-left direction perpendicular to the front-rear direction and having a rear part in the front-rear direction, a right side, and a left side opposite to the right side in the right-left direction. A boom has a front end part and a rear end part opposite to the front end part of the boom in the front-rear direction. The rear end part of the boom is rotatably supported at the rear part of the machine body. The front end part of the boom is to be connected to a working tool. An engine is mounted in the rear part of the machine body. A urea aqueous solution tank is provided on one side of the engine in the right-left direction and a rear side of the engine in the front-rear direction to store a urea aqueous solution.

公开(公告)号：US20220389680A1

公开(公告)日：2022-12-08

申请号：US17830473

申请日：2022-06-02

Applicant: KUBOTA CORPORATION

Inventor： Yuji FUKUDA ,  Jun TOMITA ,  Yuya KONISHI ,  Toshiya TANI ,  Daisuke SAKURAI

IPC: E02F9/22 ,  F15B13/02

Abstract: A hydraulic system of a working machine includes a hydraulic pump to output a hydraulic fluid, at least one proportional valve to deliver the hydraulic fluid to a supply target, a valve body including the proportional valve, a heat-up fluid passage in the valve body and into which the hydraulic fluid flows, a switching valve switchable between an open position in which the hydraulic fluid passing through the heat-up fluid passage is supplied to a hydraulic device and a closed position in which the hydraulic fluid is not supplied thereto and the hydraulic fluid from the hydraulic device is to be returned, a controller to operate the switching and proportional valves, and a return circuit through which the hydraulic fluid flowing into the heat-up fluid passage is returned as a result of at least one of the switching and proportional valves being operated by the controller.

公开(公告)号：US20180180068A1

公开(公告)日：2018-06-28

申请号：US15854134

申请日：2017-12-26

Applicant: KUBOTA CORPORATION

Inventor： Yuji FUKUDA ,  Keigo HONDA ,  Ryosuke KINUGAWA ,  Ryuki NISHIMOTO ,  Yuji YAMASHITA ,  Daisuke SAKURAI

IPC: F15B13/02 ,  E02F9/22 ,  F15B1/26 ,  E02F3/34 ,  F15B1/02

CPC classification number: F15B13/021 ,  E02F3/3414 ,  E02F9/2203 ,  E02F9/2207 ,  E02F9/2217 ,  E02F9/2267 ,  F15B1/02 ,  F15B1/26 ,  F15B11/08 ,  F15B21/0427 ,  F15B2201/411 ,  F15B2211/30565 ,  F15B2211/3127 ,  F15B2211/31558 ,  F15B2211/329 ,  F15B2211/625 ,  F15B2211/635 ,  F15B2211/66 ,  F15B2211/6658 ,  F15B2211/8613 ,  F15B2211/8616 ,  F15B2215/30 ,  F16L55/04

Abstract: A hydraulic system for a working machine includes a hydraulic actuator having a first fluid chamber and a second fluid chamber, an accumulator, an outputting fluid tube to output an operation fluid, and a switching valve to be switched between a first position and a second position. The first position allows the first fluid chamber and the second fluid chamber to be communicated with the outputting fluid tube and thereby allowing a floating operation. The second position allows the first fluid chamber and the accumulator to be communicated with each other, allows the second fluid chamber and the outputting fluid tube to be communicated with each other, and thereby allows an anti-vibration operation.

公开(公告)号：US20190241063A1

公开(公告)日：2019-08-08

申请号：US16387537

申请日：2019-04-18

Applicant: Kubota Corporation

Inventor： Keigo HONDA ,  Hiroaki NAKAGAWA ,  Daisuke SAKURAI ,  Hiroshi FUJIWARA

IPC: B60K15/03 ,  B60K13/04 ,  E02F3/34 ,  E02F9/08

CPC classification number: B60K15/03006 ,  B60K13/04 ,  B60Y2200/41 ,  B60Y2200/415 ,  E02F3/3414 ,  E02F9/0883 ,  F01N2610/02 ,  F01N2610/1406

Abstract: A working machine body includes a machine body having a front and a rear opposite to the front in a front-rear direction and an engine mounted in the machine body. A selective catalytic reduction catalyst is provided in the machine body and connected to the machine body and connected to the engine. A urea aqueous solution tank is to store a urea aqueous solution. The urea aqueous solution tank is connected to the selective catalytic reduction catalyst and provided in the machine body between the engine and the front of the machine body in the front-rear direction.

公开(公告)号：US20180163375A1

公开(公告)日：2018-06-14

申请号：US15837516

申请日：2017-12-11

Applicant: KUBOTA CORPORATION

Inventor： Yuji FUKUDA ,  Keigo HONDA ,  Hiroaki NAKAGAWA ,  Daisuke SAKURAI ,  Toshiya TANI ,  Taisuke SHINOHARA ,  Yoshihiro EBATA

IPC: E02F9/22 ,  E02F3/42 ,  F15B13/02 ,  F15B21/04

Abstract: A hydraulic system for a working machine includes an fluid cooler including an input port and an output port, the fluid cooler being configured to cool an operation fluid, an outputting portion to output the operation fluid, a traveling hydraulic device to be activated by the operation fluid, an operating hydraulic device to be activated by the operation fluid, a first output fluid tube connecting the operating hydraulic device to a tank, a second output fluid tube branching from the first output fluid tube and being connected to the input port of the fluid cooler, a third output fluid tube connecting the outputting portion to the output port of the fluid cooler, a fourth output fluid tube connected to the traveling hydraulic device, the fourth output fluid tube being connected to the second output fluid tube, and a first check valve disposed on the fourth output fluid tube.

公开(公告)号：US20160288845A1

公开(公告)日：2016-10-06

申请号：US15084489

申请日：2016-03-30

Applicant: Kubota Corporation

Inventor： Keigo HONDA ,  Hiroaki NAKAGAWA ,  Daisuke SAKURAI ,  Hiroshi FUJIWARA

IPC: B62D55/06 ,  B60K15/03

CPC classification number: B60K15/03006 ,  B60K13/04 ,  B60Y2200/41 ,  B60Y2200/415 ,  E02F3/3414 ,  E02F9/0883 ,  F01N2610/02 ,  F01N2610/1406

Abstract: A machine body has a front-rear direction and a right-left direction perpendicular to the front-rear direction. The machine body has right and left sides in the right-left direction. A cabin is mounted in the machine body between the right and left sides. Right and left traveling devices are arranged respectively on the right and left sides of the machine body. A boom has a front end part in the front-rear direction to be connected to a working tool. A first wall is provided on one side of the boom in the right-left direction. A second wall is provided on another side opposite to the one side with respect to the boom in the right-left direction. A urea aqueous solution tank is provided between the first and second walls to store a urea aqueous solution.

Abstract translation: 机体具有与前后方向垂直的前后方向和左右方向。 机体左右方向左右。 机体在右侧和左侧之间安装在机体内。 左右行走装置分别设置在机体的右侧和左侧。 悬臂具有前后方向的前端部，以连接到作业工具。 第一壁在左右方向上设置在悬臂的一侧。 第二壁相对于起重臂在左右方向上的一侧相对的另一侧设置。 尿素水溶液罐设置在第一和第二壁之间以储存尿素水溶液。