Title:
WORK VEHICLE
Document Type and Number:
Japanese Patent JP2017067196
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To secure weight saving and cost reduction, and attain high efficiency of a transmission route and improvement of operability, in a work vehicle.SOLUTION: A work vehicle includes an engine 5 mounted on a traveling machine 2, a direct advancing power transmission route provided with a first continuously variable transmission 17, and a revolving transmission route provided with a second continuously variable transmission 13, and synthesizes output of the direct advancing transmission route and output of the revolving transmission route to drive right and left traveling parts 3. The work vehicle also includes a control unit 814 configured to control the output of the direct advancing transmission route and the output of the revolving transmission route in an interlocked manner. The control unit 814, when detecting that a rotational frequency of the engine 5 is equal to or less than a predetermined rotation R1, executes a first control of forcibly making a swash plate 708 of the second continuously variable transmission 13 into a neutral state.SELECTED DRAWING: Figure 20
Inventors:
IWAMURA KEISHO
TAKAHASHI TSUTOMU
TAKAHASHI TSUTOMU
Application Number:
JP2015194650A
Publication Date:
April 06, 2017
Filing Date:
September 30, 2015
Export Citation:
Assignee:
YANMAR CO LTD
International Classes:
F16H61/439; B60K17/10; B62D11/06
Domestic Patent References:
| JP2014193186A | 2014-10-09 | |||
| JPH02245572A | 1990-10-01 | |||
| JPH08119003A | 1996-05-14 | |||
| JPH0874995A | 1996-03-19 |
Attorney, Agent or Firm:
Ryuichi Watanabe