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1. US20190047620 - WORK VEHICLE

Office United States of America
Application Number 16076653
Application Date 03.02.2017
Publication Number 20190047620
Publication Date 14.02.2019
Publication Kind A1
IPC
B PERFORMING OPERATIONS; TRANSPORTING
62
LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
D
MOTOR VEHICLES; TRAILERS
11
Steering non-deflectable wheels; Steering endless tracks or the like
02
by differentially driving ground-engaging elements on opposite vehicle sides
06
by means of a single main power source
E FIXED CONSTRUCTIONS
02
HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING
F
DREDGING; SOIL-SHIFTING
3
Dredgers; Soil-shifting machines
04
mechanically-driven
76
Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling devices
80
Component parts
84
Drives or control devices therefor
E FIXED CONSTRUCTIONS
02
HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING
F
DREDGING; SOIL-SHIFTING
9
Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/-E02F7/160
20
Drives; Control devices
B62D 11/06
E02F 3/84
E02F 9/20
CPC
B62D 11/06
B62D 55/00
E02F 3/841
E02F 9/2025
Applicants Yanmar Co., Ltd.
Inventors Keisuke IWAMURA
Priority Data 2016022543 09.02.2016 JP
Title
(EN) WORK VEHICLE
Abstract
(EN)

A work vehicle including: an engine mounted on a traveling body; a straight-traveling system transmission path including a first stepless transmission device; and a turning system transmission path including a second stepless transmission device, The work vehicle combines an output of the straight-traveling system transmission path and an output of the turning system transmission path to drive left and right traveling units. The work vehicle further includes: control sections that control the output of the straight-traveling system transmission path and the output of the turning system transmission path in cooperation with each other; and a driving force blocking mechanism that blocks a driving force transfer from the straight-traveling system transmission path. When the driving force transfer from the straight-traveling system transmission path is blocked by the driving force blocking mechanism, the mutually reverse rotation operations of the left and right traveling units is inhibited.