公开(公告)号：US20190161940A1

公开(公告)日：2019-05-30

申请号：US16096559

申请日：2017-09-27

Applicant: KCM Corporation

Inventor： Kazuya TAKEDA ,  Hiroki GOTOU ,  Kazuo ISHIDA ,  Yoshihiko NAKAZAWA

IPC: E02F9/22 ,  F16H61/4008

Abstract: In a work vehicle provided with: a working device including an arm and a bucket; a vehicle speed detection device that detects a vehicle speed; a travel drive device that outputs a travel driving force increasing in response to a decrease in the vehicle speed at a time of excavation; and a control device that controls the travel driving force by the travel drive device, the control device is characterized by including a limit control section that limits the travel driving force during a specified time which passes from when the vehicle speed detected by the vehicle speed detection device becomes a predetermined first vehicle speed threshold value or less and the work vehicle plunges into an object to be excavated until an operation of the working device is started.

公开(公告)号：US20190010679A1

公开(公告)日：2019-01-10

申请号：US15753806

申请日：2017-03-02

Applicant: KCM Corporation

Inventor： Kazuya TAKEDA ,  Isamu AOKI ,  Kazuo ISHIDA

IPC: E02F9/22

Abstract: The work vehicle includes: a clutch device including a forward-travel clutch and a backward-travel clutch configured to cause, when being in an engagement state, the work vehicle to travel in a forward travel direction and a backward travel direction; a forward-backward travel instruction device configured to instruct the work vehicle to travel in the forward travel direction or the backward travel direction; a clutch state detection device configured to detect whether the forward-travel clutch and the backward-travel clutch are each in the engagement state; and a torque restriction section configured to restrict a maximum absorbing torque of the hydraulic pump to be low when a restriction condition holds, the restriction condition including a condition that a traveling direction of the work vehicle, which corresponds to an engagement state of the clutch device, and a traveling direction of the work vehicle, which is instructed by the forward-backward travel instruction device are opposite to each other.

公开(公告)号：US20180079404A1

公开(公告)日：2018-03-22

申请号：US15560936

申请日：2015-12-18

Applicant: KCM Corporation

Inventor： Satoru KANEKO ,  Kazuo ISHIDA ,  Noritaka ITO ,  Takashi IKIMI

IPC: B60W20/13 ,  B60K6/22 ,  E02F9/20

CPC classification number: B60W20/13 ,  B60K6/22 ,  B60K6/46 ,  B60L11/14 ,  B60L11/18 ,  B60W10/08 ,  B60W10/30 ,  B60W20/00 ,  B60W2300/17 ,  B60Y2200/412 ,  B60Y2200/92 ,  E02F3/422 ,  E02F9/20 ,  E02F9/2075 ,  Y02T10/6217 ,  Y02T10/7005 ,  Y02T10/7077 ,  Y10S903/904 ,  Y10S903/93

Abstract: The hybrid type work vehicle includes: a traveling unit having a traveling electric motor; a hydraulic work unit having a hydraulic pump; and a control apparatus having an operation determination section configured to input the operation amount of an operation lever device, the depression amount of an accelerator pedal and a brake pedal, and a vehicle speed and to determine the current operation state of the vehicle, and a power computation section configured to input the output value of an engine and the output value of a power storage device and to calculate and control the power of the traveling unit and the power of the hydraulic work unit. When the operation determination section determines that the current vehicle operation state is that of an excavation work which is a combined operation of the traveling unit and the hydraulic work unit, the power computation section calculates and controls the output power of the traveling unit and the output power of the hydraulic work unit such that the sum total of the output value of the engine and the output value of the power storage device is distributed in a preset ratio.