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.